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iShares U.S. ETF Trust

Supplement dated October 9, 2026 to the currently effective Summary Prospectus, Prospectus, and Statement of Additional Information (“SAI”) for the iShares Bloomberg Roll Select Commodity Strategy ETF (CMDY) (the “Fund”)

The Board of Trustees has approved the following changes for the Fund that are expected to take effect on or around December 11, 2026:

Current New

Fund Name iShares Bloomberg Roll Select Commodity Strategy ETF

iShares Bloomberg Enhanced Roll Yield Commodity Strategy ETF

Underlying Index Bloomberg Roll Select Commodity Total Return Index

Bloomberg Enhanced Roll Yield Total Return Index

Š The Principal Investment Strategies section in the Fund’s Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

The Fund seeks to track the investment results of the Bloomberg Enhanced Roll Yield Total Return Index (the “Underlying Index”), which measures the performance of futures contracts across the following six physical commodity groups: energy, precious metals, industrial metals, grains and derived grains, softs, and livestock, as determined by Bloomberg Index Services Limited (“Bloomberg” or the “Index Provider”). The Underlying Index, which is rebalanced annually, provides broad-based exposure to commodities as an asset class by using liquidity factors and sector caps to avoid over-concentration in any single commodity or commodity sector.

The Fund, through its Subsidiary (as defined below), invests in financial instruments providing exposure to commodities and not in the physical commodities themselves. In seeking to achieve its investment objective, the Fund expects to obtain a substantial portion of its exposure to the investment results of the Underlying Index through total return swaps referencing the Underlying Index and/or the commodity futures contracts represented in the Underlying Index. The Fund is expected to enter into new total return swap contracts on an ongoing basis and replace expiring contracts as necessary to maintain exposure to the Underlying Index. Total return swaps subsequently acquired by the Fund may have terms that differ from those previously held by the Fund. The Fund generally expects to pay a fixed payment rate and swap-related fees to each counterparty and receive the total return of the Underlying Index. Although the Underlying Index measures the performance of futures contracts, the Fund is not required to hold those futures contracts directly in order to obtain its exposure to the Underlying Index.

The Fund may also invest in swaps on commodity futures contracts and other commodity-linked swaps, exchange-traded commodity futures contracts, options on futures contracts, forward contracts and other commodity-linked instruments that provide exposure to commodities represented in, or related to, the Underlying Index (collectively, “Commodity Investments”). The Fund invests in Commodity Investments solely through its Subsidiary. Investing in Commodity Investments may have a leveraging effect on the Fund.

The Fund also seeks to generate interest income and capital appreciation on the cash balances arising from its investment in Commodity Investments through a cash management strategy consisting of investments in cash and cash equivalents, short term government obligations and short-term investment grade fixed-income securities (collectively, “Fixed-Income Investments”). The Fund invests in Fixed-Income Investments for investment purposes and to provide sufficient assets to account for (or “cover”) mark-to-market changes and to collateralize the Subsidiary’s investments in derivatives on a day-to-day basis. As part of its cash management strategy, the Fund may also invest in repurchase agreements, money market instruments, U.S. government and agency securities, Treasury Inflation-Protected Securities, sovereign debt obligations of non-U.S. countries and investment-grade corporate bonds.

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In order to maintain exposure to a futures contract on a particular commodity, an investor must sell the position in the expiring contract and buy a new position in a contract with a later delivery month, which is referred to as “rolling.” The Underlying Index employs a multi-contract roll schedule to spread risk across three to four futures contracts per commodity, e.g., three futures contracts per precious metal commodity and four futures contracts per commodity in all other commodity groups, with a roll period of ten business days. The Underlying Index rolls and rebalances these contracts monthly back to equal weightings on a price-percentage basis. If the price for the new futures contract is less than the price of the expiring contract, then the market for the commodity is said to be in “backwardation.” In these markets, roll returns are positive, which is referred to as “positive carry.” The term “contango” is used to describe a market in which the price for a new futures contract is more than the price of the expiring contract. In these markets, roll returns are negative, which is referred to as “negative carry.” The Underlying Index seeks to employ a positive carry strategy that emphasizes commodities and futures contract months with the greatest degree of backwardation and lowest degree of contango, resulting in net gains through positive roll returns.

As of August 31, 2026, the Underlying Index had approximately 102 constituents, and a significant portion of the Underlying Index was represented by the energy and agriculture commodity groups. The components of the Underlying Index are likely to change over time.

The Fund gains exposure to Commodity Investments by investing through a wholly owned subsidiary organized in the Cayman Islands (the “Subsidiary”). The Subsidiary is advised by BFA and has the same investment objective as the Fund. Unlike the Fund, the Subsidiary is not an investment company registered under the Investment Company Act of 1940, as amended (the “1940 Act”) and, unless otherwise noted in this Prospectus, is not subject to the investor protections of the 1940 Act. The Subsidiary invests solely in Commodity Investments and cash and cash equivalents.

In compliance with Subchapter M of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), the Fund may invest up to 25% of its total assets in the Subsidiary. The Fund’s Commodity Investments held in the Subsidiary are intended to provide the Fund with exposure to broad commodities consistent with current U.S. federal income tax laws applicable to investment companies such as the Fund, which limit the ability of investment companies to invest directly in Commodity Investments.

BFA uses an indexing approach to try to achieve the Fund’s investment objective. The Fund does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.

Indexing may eliminate the chance that the Fund will substantially outperform the Underlying Index but also may reduce some of the risks of active management, such as poor selection of securities and/or other instruments. Indexing seeks to achieve lower costs and better after-tax performance by aiming to keep portfolio turnover low in comparison to actively managed investment companies.

The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund. BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities or other instruments intended to collectively have an investment profile similar to that of an applicable underlying index. The instruments selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of an applicable underlying index. The Fund may or may not hold all of the components of the Underlying Index. The Fund may use derivatives to gain or reduce exposure to the components of the Underlying Index or exposure to one or more market risk factors associated with such components. Subject to the limits described herein, the Fund may purchase and hold cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, and may also purchase and hold instruments not included in the Underlying Index when BFA believes that such instruments will help the Fund track the performance of the Underlying Index over time, including in light of expected liquidity or trading costs, anticipated additions to or deletions from the Underlying Index, or other reasons as determined by BFA.

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In accordance with Rule 35d-1 under the 1940 Act, under normal circumstances, the Fund will not invest less than 80% of the value of its net assets, plus the amount of any borrowings for investment purposes, in components of its Underlying Index. Investments in derivatives and other investments will be counted toward the Fund’s 80% investment policy to the extent that they provide exposure to the components of its Underlying Index or exposure to one or more market risk factors associated with such components. The Fund’s 80% investment policy may be changed by the Company’s Board of Trustees (the “Board”) upon 60 days’ notice to shareholders.

The Commodity Futures Trading Commission (“CFTC”) has adopted certain requirements that subject registered investment companies and their advisers to regulation by the CFTC if a registered investment company invests more than a prescribed level of its net asset value in CFTC-regulated futures, options and swaps, or if a registered investment company markets itself as providing investment exposure to such instruments. Due to the Fund’s potential use of such instruments above the prescribed levels, it is considered a “commodity pool” under the Commodity Exchange Act (“CEA”). The Subsidiary is also deemed a commodity pool. BFA is considered a commodity pool operator (“CPO”) with respect to the Fund and the Subsidiary and is subject to regulation by the CFTC and the National Futures Association (“NFA”).

The Underlying Index is sponsored by the Index Provider, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the components of the Underlying Index and publishes information regarding the market value of the Underlying Index.

Š The subsection entitled “The Bloomberg Roll Select Commodity Total Return Index” in the section entitled Construction and Maintenance of the Underlying Indexes in the Fund’s SAI is deleted in its entirety and replaced with the following:

The Bloomberg Enhanced Roll Yield Total Return Index

The Bloomberg Enhanced Roll Yield Total Return Index (the “Underlying Index”) measures the performance of a long-only basket of liquid commodity futures contracts across six physical commodity groups, including energy, precious metals, industrial metals, grains and derived grains, softs, and livestock, as determined by Bloomberg Index Services Limited (“Bloomberg” or the “Index Provider”). The Underlying Index, which is rebalanced annually, provides a broad-based exposure to commodities as an asset class by using liquidity factors and sector caps to avoid over-concentration in any single commodity or commodity sector.

The Underlying Index employs a multi-contract roll schedule to spread risk across three to four futures contracts per commodity, e.g., three futures contracts per precious metal commodity and four futures contracts per commodity in all other commodity groups, with a roll period of ten business days. The Underlying Index rolls and rebalances these contracts monthly back to equal weightings on a price-percentage basis.

To construct the Underlying Index, the Index Provider calculates the liquidity percentage and slope scores for each commodity using trading volumes and historic U.S. dollar values of each futures contract within the volume horizon, and then applies the following capping:

Š No single commodity (e.g., natural gas, silver) may constitute more than 15% of the Index;

Š No related group of commodities (e.g., energy, precious metals, livestock, or grains & derived grains) may constitute more than 33% of the Index;

Š No single commodity (e.g., natural gas, silver) may constitute less than 1.5% of the Index as liquidity allows.

Such capping may be exceeded by the commodity target weight calculated for each commodity on the last Underlying Index business day of November for the following year and implemented at the January Roll Period with the regular monthly roll and rebalance of the Underlying Index.

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Š The section entitled Non-Fundamental Investment Policies of the Fund in the Fund’s SAI is deleted in its entirety and replaced with the following:

Non-Fundamental Investment Policies of the Fund

Under its non-fundamental investment restrictions, which may be changed by the Board without shareholder approval, the Fund may not purchase shares of any registered open-end investment company or registered unit investment trust, in reliance on Section 12(d)(1)(F) or (G) of the Investment Company Act, at any time the Fund has knowledge that its shares are purchased by another investment company investor in reliance on the provisions of subparagraph (G) of Section 12(d)(1). The foregoing restriction does not restrict the Fund from acquiring the shares of registered open-end investment companies to the extent otherwise permissible under other provisions of the 1940 Act, as interpreted, modified or otherwise permitted by regulatory authority having jurisdiction, from time to time.

Notations Regarding the Fund’s Fundamental and Non-Fundamental Investment Policies

Unless otherwise indicated, all limitations under the Fund’s fundamental or non-fundamental investment restrictions apply only at the time that a transaction is undertaken. Any change in the percentage of the Fund’s assets invested in certain securities or other instruments resulting from market fluctuations or other changes in the Fund’s total assets will not require the Fund to dispose of an investment.

If you have any questions, please call 1-800-iShares (1-800-474-2737).

iShares ® is a registered trademark of BlackRock Fund Advisors and its affiliates. IS-SUPP-CMDY-1026

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

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FEBRUARY 27, 2026

Prospectus

iShares U.S. ETF Trust

The Securities and Exchange Commission (“SEC”) and the Commodity Futures Trading Commission (“CFTC”) have not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense.

(as revised May 29, 2026)

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iShares Bloomberg Roll Select Commodity Strategy ETF ...............

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iShares GSCI Commodity Dynamic Roll Strategy ETF ...................

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More Information About the Funds ...............................................

Additional Information About the Funds’ Risks ................................

Portfolio Holdings Information ....................................................

Management of the Funds .........................................................

Shareholder Information ............................................................

Distribution ............................................................................

Financial Highlights ..................................................................

Index Providers and Disclaimers ..................................................

Table of Contents

Fund Summaries

iShares Strategic Metals ETF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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iSHARES ® BLOOMBERG ROLL SELECT COMMODITY

STRATEGY ETF

Ticker: CMDY Stock Exchange: NYSE Arca

Investment Objective

The iShares Bloomberg Roll Select Commodity Strategy ETF (the “Fund”) seeks to track the investment results of an index composed of a broad range of commodity exposures with enhanced roll selection, on a total return basis.

Fees and Expenses

The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. Amounts in the table are rounded to the nearest basis point, which in some cases may be “0.00.” The investment advisory agreement between iShares U.S. ETF Trust (the “Trust”) and BlackRock Fund Advisors (“BFA”) (the “Investment Advisory Agreement”) provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) expenses incurred with respect to the acquisition and disposition of portfolio securities, commodities or other financial instruments and the execution of portfolio transactions, including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.

The Fund may incur “Acquired Fund Fees and Expenses.” Acquired Fund Fees and Expenses reflect the Fund’s pro rata share of the fees and expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund’s total return but is not included in the Fund’s ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund’s prospectus (the “Prospectus”). BFA, the investment adviser to the Fund, has contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, attributable to investments by the Fund in other funds advised by BFA, or its affiliates, through February 28, 2031. The contractual waiver may be terminated prior to February 28, 2031 only upon written agreement of the Trust and BFA.

You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. Annual Fund Operating Expenses (ongoing expenses that you pay each year as a 1 percentage of the value of your investments) 1

Management Fees

Distribution and Service (12b-1) Fees Other Expenses

Acquired Fund Fees and Expenses

Total Annual Fund Operating Expenses

Fee Waiver and/or Expense Reimbursement

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement 0.28% None 0.00% 0.01% 0.29% (0.01)% 0.28%

1 Operating expenses paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any. Example. This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

1 Year 3 Years 5 Years 10 Years $29 $90 $157 $363

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Portfolio Turnover. The Fund may pay transaction costs, such as commissions, when it, directly or indirectly through a subsidiary, buys and sells securities or other assets (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to track the investment results of the Bloomberg Roll Select Commodity Total Return Index (the “Underlying Index”), which measures the performance of 25 futures contracts across 23 physical agricultural, energy, precious metals and industrial metals commodities. The Underlying Index, which is rebalanced annually, provides broad-based exposure to commodities as an asset class by using liquidity factors and sector caps to avoid over-concentration in any single commodity or commodity sector.

The Fund, through its Subsidiary (as defined below), invests in financial instruments providing exposure to commodities and not in the physical commodities themselves. In seeking to achieve its investment objective, the Fund primarily invests in exchange traded futures contracts (“Index Futures”) on the Underlying Index and is expected to roll out of existing positions in Index Futures and establish new positions in Index Futures on an ongoing basis. Index Futures subsequently acquired by the Fund may have terms that differ from those of the Index Futures it currently holds, and the purchase and sale of these Index Futures may incur transaction fees. Although the Fund may hold the same futures contracts under the same futures rolling schedule as those included in the Underlying Index, the Fund is not obligated to invest in any futures contracts included in the Underlying Index.

The Fund may also invest in exchange-traded commodity futures contracts similar to those found in the Underlying Index, swaps and options on futures that correlate to the investment returns of commodities without investing directly in physical commodities, and over-the-counter commodity-linked instruments such as commodity-linked notes, swaps and forward contracts (collectively with Index Futures, “Commodity Investments”). Investing in Commodity Investments may have a leveraging effect on the Fund.

futures contract is less than the price of the expiring contract, then the market for the commodity is said to be in “backwardation.” In these markets, roll returns are positive, which is referred to as “positive carry.” The term “contango” is used to describe a market in which the price for a new futures contract is more than the price of the expiring contract. In these markets, roll returns are negative, which is referred to as “negative carry.” The Underlying Index seeks to employ a positive carry strategy that emphasizes commodities and futures contract months with the greatest degree of backwardation and lowest degree of contango, resulting in net gains through positive roll returns.

As of January 8, 2026, the Underlying Index had 25 components.

The remainder of the Fund’s assets are invested directly by the Fund, primarily in Fixed-Income Investments, including repurchase agreements, money market instruments, U.S. government and agency securities, Treasury Inflation-Protected Securities, sovereign debt obligations of non-U.S. countries and investment-grade corporate bonds.

BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities or other instruments that collectively has an investment profile similar to that of an applicable underlying index. The instruments selected are expected to have, in the aggregate, investment characteristics (based on factors such as market value and industry weightings), fundamental characteristics (such as return variability, duration, maturity, credit ratings and yield) and liquidity measures similar to those of an applicable underlying index. The Fund may or may not hold all of the components of the Underlying Index.

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The Underlying Index is sponsored by Bloomberg Index Services Limited (the “Index Provider” or “Bloomberg”), which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the components of the Underlying Index and publishes information regarding the market value of the Underlying Index.

Summary of Principal Risks

As with any investment, you could lose all or part of your investment in the Fund, and the Fund’s performance could trail that of other investments. The Fund is subject to certain risks, including the principal risks noted below (either directly or through its investments in the Subsidiary) any of which may adversely affect the Fund’s net asset value per share (“NAV”), trading price, yield, total return and ability to meet its investment objective. Certain key risks are prioritized below (with others following in alphabetical order), but the relative significance of any risk is difficult to predict and may change over time. You should review each risk factor carefully.

Commodity-Linked Derivatives Risk. The value of a commodity linked derivative instrument (including swaps based on such instruments) typically is based upon the price movements of the underlying commodity or an economic variable linked to such price movements. The current market prices, or “spot prices,” and the price at a specified future date implied by the value of certain commodity-linked derivatives (including swaps based on such instruments), or the “futures prices,” for commodities will vary depending upon expectations regarding market conditions. The value of commodity-linked investments tied to both spot and futures prices of commodities may fluctuate quickly and dramatically as a result of changes affecting a particular commodity and may not correlate to price movements in other asset classes, such as stocks, bonds and cash. Commodity-linked derivatives are subject to the risk that the counterparty to the transaction, the exchange or trading facility on which they trade or the applicable clearing house may default or otherwise fail to perform. The Fund’s use of commodity-linked derivatives may also have a leveraging effect on the Fund’s portfolio because of the leverage inherent in the use of derivatives. Leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger pool of assets than the Fund would otherwise have had. The Fund is required to post margin with respect to its holdings in derivatives. Each of these factors and events could have a significant negative impact on the Fund.

Carry Strategy Risk. The futures market for a commodity in which the price for a new futures contract is less than the price of an expiring contract, known as a market trading in a state of “backwardation,” may not continue to trade with the same degree of backwardation or with the resulting returns. To the extent that a commodity futures market is not trading in a state of backwardation (or is trading in such a state, but to a lesser degree), the Fund’s cost to maintain exposure to the commodity may increase, the positive carry strategy may prove unsuccessful, and the investment performance of the Fund may suffer.

Futures Contract Risk. Futures contracts may involve risks different from, and possibly greater than, the risks associated with investing directly in the underlying assets. Swaps or other derivatives on futures contracts also may be adversely impacted by these risks. The primary risks of futures contracts include: (i) an imperfect correlation between the value of the futures contract and that of the underlying asset; (ii) resale restrictions or the lack of a liquid secondary market and the resulting inability to close a futures contract when desired; (iii) losses from unanticipated market movements, which are potentially unlimited; (iv) BFA’s inability to predict correctly the direction of the prices of futures contracts and other financial and economic factors; (v) a counterparty’s default in the performance of its obligations; (vi) the obligation to make daily cash payments to maintain the required margin for the futures contract; and (vii) the possibility that a failure to close a position may result in delivery of an illiquid commodity to the Fund.

As futures contracts approach expiration, they may be “rolled” ( i.e ., replaced by similar contracts with a later expiration to maintain exposure to the underlying asset), which involves additional risks. In certain market conditions, the sale price of a near-term month contract can be lower than the purchase price of a longer-term contract, resulting in a cost to “roll” the futures contract.

Market Risk . The Fund could lose money over short periods due to short-term market movements and over longer periods during more prolonged market downturns. Local, regional or global events such as war, acts of terrorism, pandemics or other public health issues, recessions, the prospect or occurrence of a sovereign default or other financial crisis, or other events could have a significant impact on the Fund and its investments and could result in increased premiums or discounts to the Fund’s NAV.

Index-Related Risk. The Index Provider may rely on various sources of information to assess the criteria of components of the Underlying Index, including information that may be based on assumptions and estimates. Neither the Fund nor BFA can offer assurances that the Index Provider’s methodology or sources of information will provide an accurate assessment of included components or will result in the Fund meeting its investment objective. Errors in index data, index computations or the construction of the Underlying Index in accordance with its methodology may occur, and the Index Provider may not identify or correct them promptly or at all, which may have an adverse impact on the Fund and its shareholders. Unusual market conditions or other unforeseen circumstances (such as natural disasters, political unrest or war) may impact the Index Provider or a third-party data provider and could cause the Index Provider

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to postpone a scheduled rebalance. This could cause the Underlying Index to vary from its normal or expected composition.

Asset Class Risk. The securities and other assets in the Underlying Index or in the Fund’s portfolio may underperform in comparison to financial markets generally, a particular financial market, another index, or other asset classes.

Authorized Participant Concentration Risk. An “Authorized Participant” is a member or participant of a clearing agency registered with the SEC, which has a written agreement with the Fund or one of its service providers that allows the Authorized Participant to place orders for the purchase and redemption of creation units (“Creation Units”). Only an Authorized Participant may engage in creation or redemption transactions directly with the Fund. There are a limited number of institutions that may act as Authorized Participants for the Fund, including on an agency basis on behalf of other market participants. No Authorized Participant is obligated to engage in creation or redemption transactions. To the extent that Authorized Participants exit the business or do not place creation or redemption orders for the Fund and no other Authorized Participant places orders, Fund shares are more likely to trade at a premium or discount to NAV and possibly face trading halts or delisting.

Cash Management Risk . If a significant amount of the Fund’s assets is invested in cash and cash equivalents, the Fund may underperform other funds that do not similarly invest in cash and cash equivalents for investment purposes and/or to collateralize derivative instruments. Further, the Fund may face increased credit risk with respect to the bank or other counterparty holding such assets and the risk that the counterparty may be unable or unwilling (or perceived as such) to honor its obligations.

Commodity Market Disruption Risk. The commodity markets are subject to temporary distortions and other disruptions due to, among other factors, lack of liquidity, the participation of speculators, and government regulation, intervention and other actions. U.S. futures exchanges and some foreign exchanges limit the amount of fluctuation in futures contract prices that may occur in a single business day (generally referred to as “daily price fluctuation limits”). The maximum or minimum price of a contract as a result of these limits is referred to as a “limit price.” If the limit price has been reached in a particular contract, no trades may be executed beyond the limit price. Limit prices have the effect of precluding trading in a particular contract or forcing the liquidation of contracts at disadvantageous times or prices. The CFTC and the U.S. commodities exchanges are also authorized to take other actions in the event of a market emergency, including, for example, the imposition of higher margin requirements and the suspension of trading. Any of those actions, if taken, could adversely affect the returns of the Fund.

Commodity Risk. The Fund has substantial exposure to commodities. The Fund invests in instruments that are susceptible to fluctuations in certain commodity markets and to price changes due to trade relations, including the imposition of tariffs by the U.S. and other countries. Any negative changes in

commodity markets that may be due to changes in supply and demand for commodities, market events, war, regulatory developments, political instability, other catastrophic events, or other factors that the Fund cannot control could have an adverse impact on the Commodity Investments in which the Fund invests.

Concentration Risk. The Fund may be susceptible to an increased risk of loss, including losses due to adverse events that affect the Fund’s investments more than the market as a whole, to the extent that the Fund’s investments are concentrated in the securities or other assets of one or more issuers, countries or other geographic units, markets, industries, project types, or asset classes.

Credit Risk . Credit risk is the risk that an issuer, guarantor or liquidity provider of a fixed-income security may be unable or unwilling, or may be perceived as unable or unwilling, to make timely principal and/or interest payments or to otherwise honor its obligations. The credit rating assigned to a security or its issuer does not necessarily reflect the issuer’s current financial condition or an investment’s volatility or liquidity. An actual or perceived decline in an issuer’s creditworthiness may result in a decrease in the value and liquidity of its securities as well as greater price volatility, which may make it difficult to sell the securities. The Fund may be adversely affected if an investment that it holds experiences a downgrade or a default.

Derivatives Risk. The Fund’s use of derivatives ( e.g ., futures, forwards, swaps, options) may be riskier than other types of investments and may not have the intended effect on the Fund’s performance. Derivatives can be sensitive to changes in economic and market conditions, and they may increase the Fund’s volatility. The Fund also may experience reduced returns as a result of transaction costs and losses on derivatives positions. There is the risk of imperfect correlation between the value of a derivative and that of the asset underlying the derivative. Derivatives may create investment leverage, which could result in losses that significantly exceed the Fund’s original investment. Derivatives are subject to the risk of mispricing or improper valuation, particularly if there is not a liquid secondary market for the instrument. Certain derivatives are subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligations. The use of derivatives also exposes the Fund to additional operational and legal risks.

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Energy Sector Risk. The performance of energy-related commodities is generally cyclical and highly dependent on energy prices. The market value of energy-related commodities may decline for many reasons, including, among others, changes in energy prices, energy supply and demand, global political changes, terrorism, natural disasters and other catastrophes; government regulations, taxation policies and energy conservation efforts. The energy sector has recently experienced increased volatility. In particular, significant market volatility in the crude oil markets as well as the oil futures markets, which resulted in the market price of the front month WTI crude oil futures contract falling below zero for a period of time.

Illiquid Investments Risk . An illiquid investment is any investment that the Fund reasonably expects cannot be sold or disposed of in current market conditions in seven calendar days or less without significantly changing the market value of the investment. To the extent the Fund holds illiquid investments, the illiquid investments may reduce its returns because the Fund may be unable to transact at advantageous times or prices. In addition, if the Fund is limited in its ability to sell illiquid investments during periods when shareholders are redeeming their shares, it will need to sell liquid securities to meet redemption requests and illiquid securities will become a larger portion of the Fund’s holdings. During periods of market volatility, liquidity in the market for Fund shares may be impacted by the liquidity in the market for the underlying securities or other assets held by the Fund, which could lead to Fund shares trading at a premium or discount to the Fund’s NAV.

Income Risk. The Fund’s income may decline due to falling interest rates or other factors. This can occur because the Fund may be required to invest in lower-yielding bonds when a bond in the Fund’s portfolio matures, is near maturity, is called or is prepaid, when bonds in the Underlying Index are substituted, or when the Fund otherwise needs to purchase additional bonds. The Index Provider’s substitution of bonds in the Underlying Index may occur, for example, when the time to maturity for the bond no longer matches the Underlying Index’s stated maturity guidelines.

Interest Rate Risk . Interest rate risk refers to the risk of fluctuations in the value of a fixed-income security due to changes in the general level of interest rates. Interest rate changes can be sudden and unpredictable and are influenced by a number of factors, including government policy, monetary policy, inflation expectations, perceptions of risk, and supply and demand for fixed-income securities. An increase in interest rates generally will cause the value of fixed-income securities to decline. Securities with longer maturities generally are more sensitive to interest rate changes and subject to greater fluctuations in value. Changes in interest rates may have unpredictable effects on fixed-income markets and result in heightened volatility and lower liquidity for certain instruments, which may adversely affect a Fund’s performance. During periods of very low or negative interest rates, a Fund may be unable to maintain positive returns or pay dividends to shareholders.

Issuer Risk . The performance of the Fund depends on the performance of individual securities or other assets to which the Fund has exposure. The value of securities or other assets may decline, or perform differently from the market as a whole, due to

changes in the financial condition or credit rating of the issuer or counterparty.

Management Risk . The Fund generally does not attempt to take defensive positions under any market conditions, including declining markets. As the Fund will not fully replicate the Underlying Index and may hold securities or other assets not included in the Underlying Index, it is subject to the risk that the investment strategy of BFA may not produce the intended results. There is no guarantee that the Fund’s investment results will have a high degree of correlation to those of the Underlying Index or that the Fund will achieve its investment objective.

Market Trading Risk . The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares (including through a trading halt), losses from trading in secondary markets, periods of high volatility, and disruptions in the process of creating and redeeming Fund shares. Any of these factors, among others, may lead to the Fund’s shares trading in the secondary market at a premium or discount to NAV or to the intraday value of the Fund’s portfolio holdings. If you buy Fund shares at a time when the market price is at a premium to NAV or sell Fund shares at a time when the market price is at a discount to NAV, you may pay significantly more or receive significantly less than the underlying value of the Fund shares.

Operational and Technology Risks . The Fund is directly and indirectly susceptible to operational and technology risks, including those related to human errors, processing errors, communication errors, systems failures, cybersecurity incidents, and the use of artificial intelligence and machine learning (“AI”), which may result in losses for the Fund and its shareholders or may impair the Fund’s operations. While the Fund’s service providers are required to have appropriate operational, information security and cybersecurity risk management policies and procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and may cause the Fund’s investments in such issuers to lose value.

Privately Issued Securities Risk. Privately issued securities are securities that have not been registered under the Securities Act of 1933, as amended (the “1933 Act”). Such securities typically are subject to legal restrictions on resale and generally are not traded in established public markets. As a result, privately issued securities may be deemed to be illiquid investments, may be more difficult to value than publicly traded securities, may be subject to wide fluctuations in value and may have higher transaction costs. There can be no assurance that a trading market will exist at any time for any particular privately issued security. Difficulty in selling such securities at a desirable time or price may result in a loss to the Fund.

Risk of Investing in Agriculture and Livestock . Investments in the agricultural and livestock sectors may be volatile and change unpredictably as a result of many factors, such as legislative or regulatory developments relating to food safety, the imposition of tariffs or other trade restraints, and the supply and demand of each commodity. Increased competition and changes in consumer tastes and spending can also influence the demand for agricultural and livestock products, affecting the price of such commodities and the performance of the Fund.

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Risk of Investing in Gold. The Fund has exposure to gold through its investments in total return swaps on the Underlying Index. Thus, the Fund’s portfolio may be adversely affected by changes or trends in the price of gold. The price of gold and of gold-related instruments historically has been volatile, which may adversely affect the value of total return swaps on the Underlying Index. Governments, central banks, or other larger holders can influence the production and sale of gold, which may adversely affect the performance of the Fund.

Risk of Investing in Precious Metals. Prices of precious metals and of precious metal-related financial instruments historically have been very volatile. The high volatility of precious metal prices may adversely affect the prices of financial instruments that derive their value from the price of underlying precious metals. The production and sale of precious metals by governments or central banks or other larger holders can be affected by various economic, financial, social and political factors, which may be unpredictable and may have a significant impact on the prices of precious metals.

Risk of Investing in the U.S . Investing in U.S. issuers subjects the Fund to legal, regulatory, political, currency, security, and economic risks that are specific to the U.S. Certain changes in the U.S., such as a weakening of the U.S. economy or a decline in its financial markets, may have an adverse effect on U.S. issuers.

Risk of Swap Agreements. A swap is a two-party contract that generally obligates each counterparty to exchange periodic payments based on a pre-determined underlying investment or notional amount and to exchange collateral to secure the obligations of each counterparty. Swaps may be leveraged and are subject to counterparty risk, credit risk and pricing risk. Swaps may be subject to illiquidity risk, and it may not be possible for the Fund to liquidate a swap position at an advantageous time or price, which may result in significant losses. Certain standardized interest rate and credit default swaps are required to be traded on an exchange or trading platform and centrally cleared. Most other swaps are entered into a negotiated, bi-lateral basis and traded in the over-the-counter market. Swaps are subject to bi-lateral variation margin. The Fund is required by financial regulators to post initial margin in connection with trading over-the-counter swaps. These requirements may raise the costs for the Fund’s investment in swaps.

Subsidiary Risk. By investing in the Subsidiary, the Fund is indirectly exposed to the risks associated with the Subsidiary’s investments. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to the investor protections of the 1940 Act. Changes in the laws of the U.S. and/or the Cayman Islands could result in the inability of the Fund and/or the Subsidiary to operate as described in the Prospectus and the Statement of Additional Information (“SAI”), and could adversely affect the Fund.

investment company (“RIC”) for U.S. federal income tax purposes. Based on final regulations issued by the U.S. Internal Revenue Service (“IRS”) on which taxpayers may rely for taxable years beginning after September 28, 2016, the Fund expects its income with respect to the Subsidiary to be qualifying income. In the future, if the IRS issues new regulations or other guidance, or Congress enacts legislation, limiting the circumstances in which the Fund’s income with respect to the Subsidiary will be considered “qualifying income,” the Fund might be required to make changes to its operations, which could reduce the Fund’s ability to gain investment exposure to commodities. Fund shareholders could also experience adverse tax consequences in such circumstances.

Tracking Error Risk . The Fund may be subject to “tracking error,” which is the divergence of the Fund’s performance from that of the Underlying Index. Tracking error may occur due to a number of factors, including differences between the securities and other assets held in the Fund’s portfolio and those included in the Underlying Index; differences in the timing and methodologies used to value securities and other assets; transaction costs and other expenses incurred by the Fund that the Underlying Index does not incur; the Fund’s holding of uninvested cash; differences in the timing of the accrual or the valuation of dividends or interest received by the Fund or distributions paid to Fund shareholders; tax gains or losses; differences between the amount and/or timing of withholding taxes on dividends reflected in the Underlying Index from the Fund’s obligation, if any, for foreign withholding taxes; the requirements for the Fund to maintain pass-through tax treatment; portfolio transactions carried out to minimize the distribution of capital gains to shareholders; the acceptance of custom baskets; changes to the Underlying Index; and impacts to the Fund of complying with certain regulatory requirements or limits. Tracking error risk may be heightened during times of increased market volatility or other unusual market conditions. A Fund that tracks an index with exposure to swaps, options, futures and/or other derivatives may experience higher tracking error than ETFs that do not track such indexes.

Valuation Risk . The price that the Fund could receive upon the sale (or other disposition) of a security or other asset may differ from the Fund’s valuation of the security or other asset, particularly for securities or other assets that trade in low volume or volatile markets or that are valued using a fair value methodology. The price received by the Fund also may differ from the value used by the Underlying Index. In addition, the value of the securities or other assets in the Fund’s portfolio may change on days or during time periods when investors are not able to purchase or sell Fund shares. Authorized Participants that create or redeem Fund shares on days when the Fund is holding fair valued securities or other assets may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received had the securities or other assets not been fair valued or been valued using a different methodology. The ability to value investments may be impacted by technological issues or errors by pricing services or other third-party service providers.

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Performance Information

Prior to March 1, 2021, the Fund did not seek to track the investment results of an index. The performance information below prior to March 1, 2021 is based on the performance of the Fund when BFA used an investment strategy substantially similar to the methodology of the Underlying Index. The performance information below illustrates how the Fund’s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund’s performance to that of an appropriate broad-based securities market index and the Underlying Index. Returns assume the reinvestment of any dividends and distributions. The Fund’s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund’s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).

Calendar Year-by-Year Returns

40% 30% 20% 10% 0% -10% -20%

2 0 1 9 2 0 2 0 2 0 21 2 0 22 2 0 2 3 2 0 2 4 2 0 2 5

5.70% 0.75%

26.97%

14.23%

-9.09%

5.35%

16.11%

Return (%) Period Ended During the periods shown in the chart: Best Quarter 24.15% March 31, 2022 Worst Quarter -19.40% March 31, 2020

Average Annual Total Returns (for the periods ended December 31, 2025)

One Year Five Years

Since Fund Inception (Inception Date: 4/3/2018) Return Before Taxes 16.11% 10.03% 5.59% Return After Taxes on Distributions 10.59% 6.56% 3.21% Return After Taxes on Distributions and Sale of Fund Shares 9.47% 6.27% 3.26% MSCI All Country World Index (Net) 1 (Returns do not reflect deductions for fees, expenses or taxes except for withholding taxes on reinvested dividends) 22.34% 11.19% 11.39% Bloomberg Roll Select Commodity Total Return Index (Returns do not reflect deductions for fees, expenses or taxes) 16.52% 10.73% 6.17%

After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.

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Tax Information

The Fund intends to make distributions that may be taxable to you as ordinary income or capital gains, unless you are investing through a tax-deferred arrangement such as a 401(k) plan or an IRA, in which case, your distributions generally will be taxed when withdrawn.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), BFA or other related companies may pay the intermediary for marketing activities and presentations, educational training programs, conferences, the development of technology platforms and reporting systems or other services related to the sale or promotion of the Fund. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

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Management

Purchase and Sale of Fund Shares

The Fund is an ETF. Individual shares of the Fund may only be bought and sold in the secondary market through a broker-dealer. Because ETF shares trade at market prices rather than at NAV, shares may trade at a price greater than NAV (a premium) or less than NAV (a discount). An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares of the Fund (bid) and the lowest price a seller is willing to accept for shares of the Fund (ask) when buying or selling shares in the secondary market (the “bid-ask spread”).

Investment Adviser and Sub-Adviser. The Fund’s investment adviser is BFA. The Fund’s sub-adviser is BlackRock International Limited (“BIL” or the “Sub-Adviser”).

Portfolio Managers. Orlando Montalvo, Richard Mejzak, Erin Armstrong and Kyle Peppo (the “Portfolio Managers”) are primarily responsible for the day-to-day management of the Fund. Mr. Montalvo, Mr. Mejzak, Ms. Armstrong and Mr. Peppo have been Portfolio Managers of the Fund since 2023, 2018, 2025 and 2026, respectively.

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iSHARES ® GSCI COMMODITY DYNAMIC ROLL STRATEGY ETF

Ticker: COMT Stock Exchange: Nasdaq

Investment Objective

The iShares GSCI Commodity Dynamic Roll Strategy ETF (the “Fund”) seeks to track the investment results of an index composed of a broad range of commodity exposures with enhanced roll selection, on a total return basis.

Fees and Expenses

The Fund may incur “Acquired Fund Fees and Expenses.” Acquired Fund Fees and Expenses reflect the Fund’s pro rata share of the fees and expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund’s total return but is not included in the Fund’s ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund’s prospectus (the “Prospectus”). BFA, the investment adviser to the Fund, has contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, attributable to investments by the Fund in other registered investment companies advised by BFA, or its affiliates, through February 28, 2029. The contractual waiver may be terminated prior to February 28, 2029 only upon written agreement of the Trust and BFA.

Management Fees

Distribution and Service (12b-1) Fees Other Expenses

Acquired Fund Fees and Expenses

Total Annual Fund Operating Expenses

Fee Waiver and/or Expense Reimbursement

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement 0.48% None 0.00% 0.01% 0.49% (0.01)% 0.48%

1 Year 3 Years 5 Years 10 Years $49 $154 $271 $613

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Portfolio Turnover. The Fund may pay transaction costs, such as commissions, when it, directly or through a subsidiary, buys and sells securities or other assets (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year, the Fund’s portfolio turnover rate was 0% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to track the investment results of the S&P GSCI Dynamic Roll (USD) Total Return Index (the “Underlying Index”), which measures the performance of futures contracts such as aluminum, Brent crude oil, cocoa, coffee, copper, corn, cotton, gas oil, feeder cattle, gold, heating oil, lean hogs, lead, live cattle, natural gas, nickel, silver, soybeans, sugar, unleaded gasoline, wheat, West Texas Intermediate crude oil and zinc. The Underlying Index is rebalanced on an annual basis.

The Fund, through its Subsidiary (as defined below), invests in financial instruments providing exposure to commodities and not in the physical commodities themselves. In seeking to achieve its investment objective, the Fund invests in a combination of exchange-traded commodity futures contracts, exchange-traded options on commodity-related futures contracts and exchange cleared commodity-related swaps (together, “Commodity-Linked Investments”), thereby obtaining exposure to the commodities markets. Commodity-Linked Investments may also include exchange-cleared swaps on commodities and exchange-traded options on futures that provide exposure to the investment returns of the commodities markets. Investing in Commodity Linked Investments may have a leveraging effect on the Fund.

The Fund also seeks to generate interest income and capital appreciation on the cash balances arising from its investment in Commodity-Linked Investments through a cash management strategy consisting primarily of investments in short-term, investment-grade fixed-income securities that include U.S. government and agency securities, Treasury Inflation-Protected Securities, sovereign debt obligations of non-U.S. countries, and repurchase agreements, money market instruments and cash and other cash equivalents (collectively, “Fixed-Income Investments”). The Fund invests in Fixed-Income Investments for investment purposes and to provide sufficient assets to account for (or “cover”) mark-to-market changes and to collateralize the Subsidiary’s Commodity-Linked Investments exposure on a day to-day basis.

As of October 31, 2025, the Underlying Index had 24 components.

The Fund gains exposure to Commodity-Linked Investments by investing through a wholly owned subsidiary organized in the Cayman Islands (the “Subsidiary”). The Subsidiary is advised by BFA and has the same investment objective as the Fund. Unlike the Fund, the Subsidiary is not an investment company registered under the Investment Company Act of 1940, as amended (the “1940 Act”) and, unless otherwise noted in this Prospectus, is not subject to the investor protections of the 1940 Act. The Subsidiary invests solely in Commodity-Linked Investments and cash and cash equivalents.

In compliance with Subchapter M of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), the Fund may invest up to 25% of its total assets in the Subsidiary. The Fund’s Commodity-Linked Investments held in the Subsidiary are intended to provide the Fund with exposure to commodity markets within the limits of current U.S. federal income tax laws applicable to investment companies such as the Fund, which limit the ability of investment companies to invest directly in Commodity-Linked Investments.

The remainder of the Fund’s assets are invested directly by the Fund, primarily in Fixed-Income Investments. The Fund or the Subsidiary may from time to time invest in other exchange-traded funds (“ETFs”), exchange-traded notes or commodity-linked notes.

The Underlying Index is sponsored by S&P Dow Jones Indices LLC (the “Index Provider”), which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the components of the Underlying Index and publishes information regarding the market value of the Underlying Index.

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Industry Concentration Policy. The Fund will concentrate its investments ( i.e. , hold 25% or more of its total assets) in (i) equity securities issued by commodity-related companies, derivatives with exposure to commodity-related companies or investments in securities and derivatives linked to the underlying price movement of commodities, including but not limited to commodity-linked derivatives such as commodity-linked notes, commodity futures, forward contracts and swaps and other similar derivative instruments and investment vehicles that invest in commodities, or commodity-linked derivatives, and (ii) the industry or group of industries that constitutes the energy sector. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.

Summary of Principal Risks

Commodity-Linked Derivatives Risk. The value of a commodity linked derivative instrument typically is based upon the price movements of the underlying commodity or an economic variable linked to such price movements. The prices of commodity-linked investments may fluctuate quickly and dramatically as a result of changes affecting a particular commodity and may not correlate to price movements in other asset classes, such as stocks, bonds and cash. Commodity-linked derivatives are subject to the risk that the counterparty to the transaction, the exchange or trading facility on which they trade or the applicable clearing house may default or otherwise fail to perform. The Fund’s use of commodity linked derivatives may also have a leveraging effect on the Fund’s portfolio because of the leverage inherent in the use of derivatives. Leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger pool of assets than the Fund would otherwise have had. The Fund is required to post margin with respect to its holdings in derivatives. Each of these factors and events could have a significant negative impact on the Fund.

contracts and other financial and economic factors; (v) a counterparty’s default in the performance of its obligations; (vi) the obligation to make daily cash payments to maintain the required margin for the futures contract; and (vii) the possibility that a failure to close a position may result in delivery of an illiquid commodity to the Fund.

Asset Class Risk. The securities and other assets in the Underlying Index or in the Fund’s portfolio may underperform in

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comparison to financial markets generally, a particular financial market, another index, or other asset classes.

Cash Transactions Risk . The Fund’s creation and redemption transactions generally are expected to be effected in cash, rather than as in-kind transactions in which portfolio securities or other investments are delivered. As a result, the Fund may have to sell investments at inopportune times in order to obtain the cash needed to meet redemption orders. Such sales may cause the Fund to recognize capital gains or losses that might not have been incurred if the redemption had been transacted in-kind. This may decrease the tax efficiency of the Fund compared with that of ETFs that use in-kind redemptions. The use of cash creations and redemptions also may cause the Fund’s shares to trade in the market at wider bid-ask spreads or greater premiums or discounts to the Fund’s NAV.

Commodity Risk. The Fund invests in instruments that are susceptible to fluctuations in certain commodity markets and to price changes due to trade relations, including the imposition of tariffs by the U.S. and other importing countries. Any negative changes in commodity markets that may be due to changes in supply and demand for commodities, market events, war, regulatory developments, political instability, other catastrophic events, or other factors that the Fund cannot control could have an adverse impact on Commodity-Linked Investments in which the Fund invests.

Credit Risk . Credit risk is the risk that an issuer, guarantor or liquidity provider of a fixed-income security may be unable or unwilling, or may be perceived as unable or unwilling, to make timely principal and/or interest payments or to otherwise honor its obligations. The credit rating assigned to a security or its issuer does not necessarily reflect the issuer’s current financial condition or an investment’s volatility or liquidity. An actual or perceived decline in an issuer’s creditworthiness may result in a decrease in the value and liquidity of its securities as well as greater price volatility, which may make it difficult to sell the securities. The Fund may be adversely affected if an investment that it holds experiences a downgrade or a default.

Currency Risk . Because the Fund’s NAV is determined in U.S. dollars, the NAV could decline if the currency of the non-U.S. market in which the Fund invests depreciates against the U.S. dollar or if there are delays or limits on the repatriation of foreign currency. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, the Fund’s NAV may change quickly and without warning. In addition, the Fund may incur costs in connection with conversions between U.S. dollars and foreign currencies.

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energy prices, energy supply and demand, global political changes, terrorism, natural disasters and other catastrophes; government regulations, taxation policies and energy conservation efforts. The energy sector has recently experienced increased volatility. In particular, significant market volatility in the crude oil markets as well as the oil futures markets, which resulted in the market price of the front month WTI crude oil futures contract falling below zero for a period of time.

Large Shareholder and Large-Scale Redemption Risk. Certain shareholders of the Fund, including an Authorized Participant, a third-party investor, the Fund’s adviser, an affiliate of the Fund’s adviser, a market maker, or another entity, may from time to time own or manage a substantial amount of Fund shares, or may hold their investment in the Fund for a limited period of time. There can be no assurance that any large shareholder or large group of shareholders would not redeem their investment. Redemptions of a large number of Fund shares could require the Fund to dispose of assets to meet the redemption requests, which can accelerate the realization of taxable income and/or capital gains and cause the Fund to make taxable distributions to its shareholders earlier than the Fund otherwise would have. In addition, under certain circumstances, non-redeeming shareholders may be treated as receiving a disproportionately large taxable distribution during or with respect to such year. In some circumstances, the Fund may hold a relatively large proportion of its assets in cash in anticipation of large redemptions, diluting its investment returns. These large redemptions may also force the Fund to sell portfolio securities or other assets when it might not otherwise do so, which may negatively impact the Fund’s NAV, increase the Fund’s brokerage costs and/or have a material effect on the market price of Fund shares.

investment strategy of BFA and the Sub-Adviser may not produce the intended results. There is no guarantee that the Fund’s investment results will have a high degree of correlation to those of the Underlying Index or that the Fund will achieve its investment objective.

National Closed Market Trading Risk. To the extent that securities or other assets held by the Fund trade on foreign exchanges or in foreign markets that may be closed when the securities exchange on which the Fund’s shares trade is open, there are likely to be deviations between such asset’s current price and its last quoted price ( i.e ., the quote from the closed foreign market to the Fund). The impact of a closed foreign market on the Fund is likely to be greater where a large portion of the Fund’s holdings trade on a closed foreign market or when a foreign market is closed for unscheduled reasons. These deviations could result in premiums or discounts to the Fund’s NAV that may be greater than those experienced by other funds.

Non-U.S. Securities Risk . Securities issued by non-U.S. issuers (including depositary receipts) are subject to different legal, regulatory, political, economic, and market risks than securities issued by U.S. issuers. These risks include greater market volatility, less market liquidity, higher transaction costs, expropriation, confiscatory taxation, adverse changes in foreign investment or currency control regulations, restrictions on the repatriation of capital, and political instability. Non-U.S. issuers may be subject to different accounting, audit and financial reporting standards than U.S. issuers, and there may be less publicly available information about non-U.S. issuers. Foreign market trading hours, different clearing and settlement procedures, and holiday schedules may limit the Fund’s ability to engage in portfolio transactions. To the extent that investments are made in a limited number of countries, events in those countries will have a more significant impact on the Fund.

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adverse consequences for such issuers and may cause the Fund’s investments in such issuers to lose value.

Reliance on Trading Partners Risk . The Fund invests in countries or regions whose economies are heavily dependent upon trading with key partners. Any reduction in this trading may have an adverse impact on the Fund’s investments. Through its holdings of securities of certain issuers, the Fund is specifically exposed to North American Economic Risk . Risk of Investing in Agriculture and Livestock . Investments in the agricultural and livestock sectors may be volatile and change unpredictably as a result of many factors, such as legislative or regulatory developments relating to food safety, the imposition of tariffs or other trade restraints, and the supply and demand of each commodity. Increased competition and changes in consumer tastes and spending can also influence the demand for agricultural and livestock products, affecting the price of such commodities and the performance of the Fund.

Risk of Investing in Developed Countries . The Fund’s investment in developed country issuers will subject the Fund to legal, regulatory, political, currency, security, economic and other risks associated with developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some less developed countries. Certain developed countries have experienced security concerns, such as war, terrorism and strained international relations. Incidents involving a country’s or region’s security may cause uncertainty in its markets and may adversely affect its economy and the Fund’s investments. In addition, developed countries may be adversely impacted by changes to the economic conditions of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.

or price, which may result in significant losses. Certain standardized interest rate and credit default swaps are required to be traded on an exchange or trading platform and centrally cleared. Most other swaps are entered into a negotiated, bi-lateral basis and traded in the over-the-counter market. Swaps are subject to bi-lateral variation margin. The Fund is required by financial regulators to post initial margin in connection with trading over-the-counter swaps. These requirements may raise the costs for the Fund’s investment in swaps.

Tax Risk. The Fund invests in commodity-linked derivatives indirectly through the Subsidiary because income from these investments, if made directly, might not be treated as “qualifying income” for purposes of the Fund qualifying as a regulated investment company (“RIC”) for U.S. federal income tax purposes. Based on final regulations issued by the U.S. Internal Revenue Service (“IRS”) on which taxpayers may rely for taxable years beginning after September 28, 2016, the Fund expects its income with respect to the Subsidiary to be qualifying income. In the future, if the IRS issues new regulations or other guidance, or Congress enacts legislation, limiting the circumstances in which the Fund’s income with respect to the Subsidiary will be considered “qualifying income,” the Fund might be required to make changes to its operations, which could reduce the Fund’s ability to gain investment exposure to commodities. Fund shareholders could also experience adverse tax consequences in such circumstances.

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exposure to swaps, options, futures and/or other derivatives may experience higher tracking error than ETFs that do not track such indexes.

on days or during time periods when investors are not able to purchase or sell Fund shares. Authorized Participants that create or redeem Fund shares on days when the Fund is holding fair valued securities or other assets may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received had the securities or other assets not been fair valued or been valued using a different methodology. The ability to value investments may be impacted by technological issues or errors by pricing services or other third-party service providers.

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Performance Information

Prior to March 1, 2021, the Fund did not seek to track the investment results of an index. The performance information below prior to March 1, 2021 is based on the performance of the Fund when BFA used an investment strategy substantially similar to the methodology of the applicable Underlying Index at the time. The performance information below illustrates how the Fund’s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund’s performance to that of an appropriate broad-based securities market index and the Underlying Index. Returns assume the reinvestment of any dividends and distributions. The Fund’s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund’s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1800-474-2737) (toll free). Calendar Year-by-Year Returns

60% 40% 20% 0% -20% -40%

2 0 1 6 2 0 17 2 0 1 8 2 0 1 9 2 0 2 0 2 0 21 2 0 22 2 0 2 3 2 0 2 4 2 0 2 5

21.22% 11.71%

-6.60%

10.70%

-18.53%

36.54% 18.89%

-6.27%

5.88% 6.26%

Return (%) Period Ended During the periods shown in the chart: Best Quarter 29.76% March 31, 2022 Worst Quarter -31.52% March 31, 2020

Average Annual Total Returns (for the periods ended December 31, 2025) One Year Five Years Ten Years (Inception Date: 10/15/2014) Return Before Taxes 6.26% 11.35% 6.92% Return After Taxes on Distributions 3.07% 6.24% 3.68% Return After Taxes on Distributions and Sale of Fund Shares 3.66% 6.65% 4.02% S&P Global Broad Market Index (Net) 1,2 (Returns do not reflect deductions for fees, expenses or taxes except for withholding taxes on reinvested dividends) 21.96% 10.50% 11.28% S&P GSCI Dynamic Roll (USD) Total Return Index (Spliced) 3 (Returns do not reflect deductions for fees, expenses or taxes) 6.63% 11.79% 5.92% S&P Total Market Index 2 (Returns do not reflect deductions for fees, expenses or taxes) 17.05% 13.07% 14.22%

1 Returns for net indices generally assume the reinvestment of dividends after the deduction of the maximum withholding tax in each country applicable to non-residents of the country as determined by the index provider. Such indices use withholding tax rates that are often at a higher rate than the rates t o which the Fund is subject in each country, including for countries where the Fund is not subject to withholding taxes. When this is the case, index performance will be lower than if the index used the Fund’s applicable withholding tax rates, if any. 2 The Fund now compares its performance to the S&P Global Broad Market Index (Net) as it represents the broad global equity market and will no longer compare its performance to the S&P Total Market Index. 3 The S&P GSCI Dynamic Roll (USD) Total Return Index (Spliced) reflects the performance of the S&P GSCI Commodity Total Return Index through July 8, 2018 (when the Fund was actively managed), the S&P GSCI Dynamic Roll Reduced Energy 70/30 Futures/Equity Blend Total Return Index from July 9, 2018 through January 31, 2020 (when the Fund was actively managed), and the S&P GSCI Dynamic Roll (USD) Total Return Index thereafter. Prior to March 1, 2021, the Fund did not seek to track the investment results of an index but was managed by BFA during the applicable periods using an investment strategy substantially similar to the methodology of the applicable index.

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Management

Investment Adviser and Sub-Adviser. The Fund’s investment adviser is BFA. The Fund’s sub-adviser is BlackRock International Limited (“BIL” or the “Sub-Adviser”).

Purchase and Sale of Fund Shares

Tax Information

Payments to Broker-Dealers and Other Financial Intermediaries

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Ticker: ISTM Stock Exchange: Nasdaq

Investment Objective

Fees and Expenses

The Fund may incur “Acquired Fund Fees and Expenses.” Acquired Fund Fees and Expenses reflect the Fund’s pro rata share of the fees and expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund’s total return but is not included in the Fund’s ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund’s prospectus (the “Prospectus”). BFA, the investment adviser to the Fund, has contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, attributable to investments by the Fund in other funds advised by BFA, or its affiliates, through February 29, 2028. The contractual waiver may be terminated prior to February 29, 2028 only upon written agreement of the Trust and BFA.

Management Fees

Distribution and Service (12b-1) Fees Other Expenses

Acquired Fund Fees and Expenses

Total Annual Fund Operating Expenses

Fee Waiver and/or Expense Reimbursement

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement 0.47% None 0.00% 0.02% 0.49% (0.02)% 0.47%

1 Year 3 Years 5 Years 10 Years $48 $153 $270 $612

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The iShares Strategic Metals ETF (the “Fund”) seeks to track the investment results of a commodities futures index that provides strategic exposure to metals that are essential to several structural themes, such as AI infrastructure, manufacturing, energy production and distribution, and national security.

iSHARES STRATEGIC ® ® METALS ETF

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Principal Investment Strategies

In compliance with Subchapter M of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), the Fund may invest up to 25% of its total assets in the Subsidiary. The Fund’s Commodity-Linked Investments held in the Subsidiary are intended to provide the Fund with exposure to commodity markets within the limits of current U.S. federal income tax laws applicable to investment companies such as the Fund, which limit the ability of investment companies to invest directly in Commodity-Linked Investments.

The remainder of the Fund’s assets will be invested directly by the Fund, primarily in Fixed-Income Investments. The Fund may from time to time invest in other exchange-traded funds (“ETFs”), exchange-traded notes, swaps or commodity-linked notes.

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The Fund seeks to track the investment results of the ICE Strategic Re-Industrialization Metals Index (the “Underlying Index”), which measures the performance of a long-only basket of exchange-traded commodity metal futures contracts representing underlying metals that are extensively used in broader re-industrialization related applications, such as Artificial Intelligence (“AI”) infrastructure, manufacturing, energy production and distribution, and national security, as determined by the Commodity Index Advisory Committee (“Advisory Committee”) established by ICE Data Indices, LLC (“IDI” or the “Index Provider”). To be eligible for review by the Advisory Committee, futures contracts must be U.S. dollar denominated; listed on the New York Mercantile Exchange, Chicago Mercantile Exchange, London Metal Exchange, or ICE Futures; and have a total trading volume of at least 5 million contracts per annual period. The Advisory Committee considers eligible contracts for inclusion in the Underlying Index based on (1) government, agency, and private company data and reports relating to the current and expected future usage of metals that derive at least 50% of their end use demand from re-industrialization related themes; and (2) metals that exhibit a favorable supply-demand outlook and are not subject to prolonged oversupply dynamics. The Underlying Index includes commodity metal futures contracts in copper, aluminum, silver, nickel, zinc, and platinum. These commodity metal futures contracts are reviewed annually by the Advisory Committee.

The Underlying Index is rebalanced on a quarterly basis and occurs at the same time as any rolling of futures contracts after the close of the 5th to 9th business day in January, April, July, and October each year. “Roll” refers to the process of selling a futures contract as it approaches its settlement date and replacing the position with a similar contract with a more distant settlement date.

As of May 29, 2026, the Underlying Index will have 12 components.

In seeking to achieve its investment objective, the Fund, through its Subsidiary (as defined below), invests in financial instruments that provide the same or similar exposure to commodities as the components of the Underlying Index, and not in the physical commodities themselves. For example, the Fund may invest in “similar” metals futures contracts to those in the Underlying Index where exposure to the same underlying metal is available on a similar contract trading on a different exchange. To obtain its exposure to the commodities

markets, the Fund may invest in a combination of exchange traded commodity futures contracts and exchange-traded options on commodity-related futures contracts (together, “Commodity-Linked Investments”). Investing in Commodity Linked Investments may have a leveraging effect on the Fund.

The Fund also seeks to generate interest income and capital appreciation on the cash balances arising from its investment in Commodity-Linked Investments through a cash management strategy consisting primarily of investments in cash and cash equivalents, short-term, investment-grade fixed income securities that include U.S. government and agency securities, Treasury Inflation-Protected Securities, sovereign debt obligations of non-U.S. countries, repurchase agreements and money market instruments (collectively, “Fixed-Income Investments”). The Fund uses Fixed-Income Investments as investments and to provide liquidity, serve as margin and/or collateralize the Subsidiary’s Commodity-Linked Investments exposure on a day-to-day basis.

The Fund gains exposure to Commodity-Linked Investments by investing through a wholly owned subsidiary organized in the Cayman Islands (the “Subsidiary”). The Subsidiary is advised by BFA and has the same investment objective as the Fund. Unlike the Fund, the Subsidiary is not an investment company registered under the Investment Company Act of 1940, as amended (the “1940 Act”) and, unless otherwise noted in this Prospectus, is not subject to the investor protections of the 1940 Act. The Subsidiary will invest solely in Commodity Linked Investments and cash and cash equivalents.

Because the Fund uses a strategy of investing in the same or similar metals futures contracts as the Underlying Index, it can be expected to have a larger tracking error than if it used a

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replication indexing strategy. “Replication” is an indexing strategy in which a fund invests in substantially all of the components of its underlying index in approximately the same proportions as in the underlying index.

The Fund will invest at least 80% of its assets, plus the amounts of any borrowings for investment purposes, in the same or similar metals futures contracts as the Underlying Index. Cash and cash equivalent investments associated with a futures contract will be treated as part of that position for purposes of calculating the percentage of investments included in the same or similar metals futures contracts as the Underlying Index.

The Underlying Index is sponsored by IDI, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the components of the Underlying Index and publishes information regarding the market value of the Underlying Index.

Industry Concentration Policy. The Fund will concentrate its investments ( i.e. , hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.

Summary of Principal Risks

As with any investment, you could lose all or part of your investment in the Fund, and the Fund’s performance could trail that of other investments. The Fund is subject to certain risks, including the principal risks noted below (either directly or through its investments in the Subsidiary) any of which may adversely affect the Fund’s NAV, trading price, yield, total return and ability to meet its investment objective. Certain key risks are prioritized below (with others following in alphabetical order), but the relative significance of any risk is difficult to predict and may change over time. You should review each risk factor carefully.

Re-Industrialization Metals Risk.

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The performance of re industrialization metals (i.e., metals used to facilitate AI infrastructure, manufacturing, energy production and distribution, and national security) is highly dependent on manufacturing reshoring, amplified battery production, increased defense

spending and the expansion of AI infrastructure. Investments in re-industrialization metals may be speculative and subject to greater price volatility than investments in other types of assets. The market value of re-industrialization metals may be significantly affected for many reasons, including, among others, obsolescence of existing technology, changes in energy prices, worldwide metal prices and extraction and production costs, global political changes, terrorism, war, natural disasters and other catastrophes, government regulations and subsidies, supply chains, and taxation policies. Worldwide metal prices may fluctuate substantially over short periods of time, and as a result, the Fund’s share price may be more volatile than other types of investments. Such risks may be heightened to the extent the Fund’s Commodity-Linked Investments provide exposure to emerging markets. In addition, the industry is relatively nascent and under-researched in comparison to more established and mature sectors, and should therefore be regarded as having greater investment risk.

changes affecting a particular commodity and may not correlate to price movements in other asset classes, such as stocks, bonds and cash. Commodity-linked derivatives are subject to the risk that the counterparty to the transaction, the exchange or trading facility on which they trade or the applicable clearing house may default or otherwise fail to perform. The Fund’s use of commodity linked derivatives may also have a leveraging effect on the Fund’s portfolio because of the leverage inherent in the use of derivatives. Leverage generally magnifies the effect of a change in the value of an asset and creates a risk of loss of value on a larger

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pool of assets than the Fund would otherwise have had. The Fund is required to post margin with respect to its holdings in derivatives. Each of these factors and events could have a significant negative impact on the Fund.

Assets Under Management (AUM) Risk . From time to time, an Authorized Participant (as defined below in Authorized Participant Concentration Risk) k), a third-party investor, the Fund’s adviser, an affiliate of the Fund’s adviser, or another fund may invest in the Fund and hold its investment for a specific period of time to allow the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels, which could negatively impact the Fund.

shares are more likely to trade at a premium or discount to NAV and possibly face trading halts or delisting.

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proceedings, the Fund may be subject to stays that limit its ability to close out positions and limit risk. The Fund’s investments in the futures markets also introduce the risk that its futures commission merchant (“FCM”) could default on an obligation set forth in an agreement between the Fund and the FCM, including the FCM’s obligation to return margin posted in connection with the Fund’s futures contracts.

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Credit Risk . Credit risk is the risk that an issuer, guarantor or liquidity provider of a fixed-income security may be unable or unwilling, or may be perceived as unable or unwilling, to make timely principal and/or interest payments or to otherwise honor its obligations. The credit rating assigned to a security or its issuer does not necessarily reflect the issuer’s current financial condition or an investment’s volatility or liquidity. An actual or perceived decline in an issuer’s creditworthiness may result in a decrease in the value and liquidity of its securities as well as greater price volatility, which may make it difficult to sell the securities. The Fund may be adversely affected if an investment that it holds experiences a downgrade or a default.

changes in the financial condition or credit rating of the issuer or counterparty.

Management Risk . The Fund generally does not attempt to take defensive positions under any market conditions, including declining markets. As the Fund will not fully replicate the Underlying Index and may hold securities or other assets not included in the Underlying Index, it is subject to the risk that the investment strategy of BFA and the Sub-Adviser may not produce the intended results. There is no guarantee that the Fund’s investment results will have a high degree of correlation to those of the Underlying Index or that the Fund will achieve its investment objective.

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there are likely to be deviations between such asset’s current price and its last quoted price ( i.e ., the quote from the closed foreign market to the Fund). The impact of a closed foreign market on the Fund is likely to be greater where a large portion of the Fund’s holdings trade on a closed foreign market or when a foreign market is closed for unscheduled reasons. These

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deviations could result in premiums or discounts to the Fund’s NAV that may be greater than those experienced by other funds.

Non-Diversification Risk . The Fund is classified as “non diversified.” This means that, compared with funds that are classified as “diversified,” the Fund may invest a greater percentage of its assets in securities or other instruments representing a small number of issuers or counterparties and thus may be more susceptible to the risks associated with these particular issuers or counterparties. As a result, the Fund’s performance may depend to a greater extent on the performance of a small number of issuers or counterparties, which may lead to more volatility in the Fund’s NAV.

Non-U.S. Securities Risk . Securities issued by non-U.S. issuers (including depositary receipts) are subject to different legal, regulatory, political, economic, and market risks than securities issued by U.S. issuers. These risks include greater market volatility, less market liquidity, higher transaction costs, expropriation, confiscatory taxation, adverse changes in foreign investment or currency control regulations, restrictions on the repatriation of capital, and political instability. Non-U.S. issuers may be subject to different accounting, audit and financial reporting standards than U.S. issuers, and there may be less publicly available information about non-U.S. issuers. Foreign market trading hours, different clearing and settlement procedures, and holiday schedules may limit the Fund’s ability to engage in portfolio transactions. To the extent that investments are made in a limited number of countries, events in those countries will have a more significant impact on the Fund.

Reliance on Trading Partners Risk . The Fund invests in countries or regions whose economies are heavily dependent upon trading with key partners. Any reduction in this trading may have an adverse impact on the Fund’s investments. Through its holdings of securities of certain issuers, the Fund is specifically exposed to North American Economic Risk . Risk of Investing in Developed Countries . The Fund’s investment in developed country issuers will subject the Fund to legal, regulatory, political, currency, security, economic and other risks associated with developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some less developed countries. Certain developed countries have experienced security concerns, such as war, terrorism and strained international relations. Incidents involving a country’s or region’s security may cause uncertainty in its markets and may

adversely affect its economy and the Fund’s investments. In addition, developed countries may be adversely impacted by changes to the economic conditions of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.

Small Fund Risk. When the Fund’s size is small, the Fund may experience low trading volume and wide bid/ask spreads. The Fund’s performance near its inception date may not represent how the Fund will perform in the future or with a larger asset base. A Fund that holds fixed-income securities may buy smaller sized bonds known as “odd lots,” which may be purchased or sold at a discount to similar “round lot” bonds. The prices used by the Fund may differ from the value that would be realized if these securities were sold, and the impact of such pricing differences on a Fund’s performance may be heightened when the Fund’s size is small. In addition, the Fund may face the risk of being delisted if it does not meet certain requirements set by the listing exchange. Any resulting liquidation of the Fund could lead to elevated transaction costs for the Fund and negative tax consequences for its shareholders.

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other expenses incurred by the Fund that the Underlying Index does not incur; the Fund’s holding of uninvested cash; differences in the timing of the accrual or the valuation of dividends or interest received by the Fund or distributions paid to Fund shareholders; tax gains or losses; differences between the amount and/or timing of withholding taxes on dividends reflected in the Underlying Index from the Fund’s obligation, if any, for foreign withholding taxes; the requirements for the Fund to maintain pass-through tax treatment; portfolio transactions carried out to minimize the distribution of capital gains to shareholders; the acceptance of custom baskets; changes to the Underlying Index; and impacts to the Fund of complying with certain regulatory requirements or limits. Tracking error risk may be heightened during times of increased market volatility or other unusual market conditions. A Fund that tracks an index with exposure to swaps, options, futures and/or other derivatives may experience higher tracking error than ETFs that do not track such indexes. Until the Fund reaches greater scale, it may experience higher tracking error than is typical for similar index ETFs.

Valuation Risk . The price that the Fund could receive upon the sale (or other disposition) of a security or other asset may differ from the Fund’s valuation of the security or other asset,

particularly for securities or other assets that trade in low volume or volatile markets or that are valued using a fair value methodology. The price received by the Fund also may differ from the value used by the Underlying Index. In addition, the value of the securities or other assets in the Fund’s portfolio may change on days or during time periods when investors are not able to purchase or sell Fund shares. Authorized Participants that create or redeem Fund shares on days when the Fund is holding fair valued securities or other assets may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received had the securities or other assets not been fair valued or been valued using a different methodology. The ability to value investments may be impacted by technological issues or errors by pricing services or other third-party service providers.

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Performance Information

The performance information below illustrates how the Fund’s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund’s performance to that of an appropriate broad-based securities market index and the Underlying Index. Returns assume the reinvestment of any dividends and distributions. The Fund’s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund’s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).

Calendar Year-by-Year Returns

80%

60%

40%

20%

2 0 2 4 2 0 2 5

7.28%

53.83%

Return (%) Period Ended During the period shown in the chart: Best Quarter 23.55% December 31, 2025 Worst Quarter -7.40% December 31, 2024

Average Annual Total Returns (for the periods ended December 31, 2025)

One Year

Since Fund Inception (Inception Date: 9/26/2023) Return Before Taxes 53.83% 26.93% Return After Taxes on Distributions 45.19% 18.38% Return After Taxes on Distributions and Sale of Fund Shares 31.49% 16.68% MSCI All Country World Index (Net) 1,2 (Returns do not reflect deductions for fees, expenses or taxes except for withholding taxes on reinvested dividends) 22.34% 23.18% ICE Strategic Re-Industrialization Metals Index (Spliced) 3 (Returns do not reflect deductions for fees, expenses or taxes) 54.12% 27.56% ICE BofA US Broad Market Index 2 (Returns do not reflect deductions for fees, expenses or taxes) 7.15% 6.66%

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The ICE Strategic Re-Industrialization Metals Index (Spliced) reflects the performance of the ICE Clean Energy Transition Metals Index through May 28, 2026 and the ICE Strategic Re-Industrialization Metals Index thereafter, which reflect the times when each index was the Underlying Index of the Fund.

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Management

Investment Adviser and Sub-Adviser. The Fund’s investment adviser is BFA. The Fund’s sub-adviser is BlackRock International Limited (“BIL” or the “Sub-Adviser”).

Tax Information

Payments to Broker-Dealers and Other Financial Intermediaries

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Purchase and Sale of Fund Shares

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More Information About the Funds

This Prospectus contains important information about investing in the Funds listed below. Please read this Prospectus carefully before you make any investment decisions. Additional information regarding the Funds as well as other funds that are series of iShares Trust, iShares U.S. ETF Trust or iShares, Inc. (each, a “Fund”) is available at www.iShares.com.

Each Fund’s investment objective and its Underlying Index may be changed without shareholder approval.

Fund Underlying Index Investment Objective iShares Bloomberg Roll Select Commodity Strategy ETF

Bloomberg Roll Select Commodity Total Return Index

The iShares Bloomberg Roll Select Commodity Strategy ETF seeks to track the investment results of an index composed of a broad range of commodity exposures with enhanced roll selection, on a total return basis. iShares GSCI Commodity Dynamic Roll Strategy ETF

S&P GSCI Dynamic Roll (USD) Total Return Index

The iShares GSCI Commodity Dynamic Roll Strategy ETF seeks to track the investment results of an index composed of a broad range of commodity exposures with enhanced roll selection, on a total return basis. iShares Strategic Metals ETF 1 ICE Strategic Re-Industrialization Metals Index

ETFs are funds that trade like other publicly traded securities. Shares of each Fund are listed on a national securities exchange and trade in the secondary market at market prices that change throughout the day. The market price for a share of a Fund may be different from the Fund’s most recent NAV.

Each Fund invests in a particular segment of the markets for securities and other instruments (as applicable) and is designed to be used as part of broader asset allocation strategies. Accordingly, an investment in a Fund should not constitute a complete investment program. An investment in a Fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation, any other government agency, BFA or any of BFA’s affiliates.

Index Funds

A share of a Fund represents an ownership interest in an underlying portfolio of securities and other instruments (as applicable) that is intended to track the Fund’s Underlying Index. An index is a financial calculation, based on a grouping of financial instruments, and is not an investment product, while each Fund is an actual investment portfolio. The performance of a Fund and that of its Underlying Index may vary for a number of reasons, including transaction costs, asset or currency valuations, corporate actions, timing variances and differences between the composition of a Fund’s portfolio and that of the Underlying Index resulting from the Fund’s use of representative sampling or from legal restrictions (such as diversification requirements) that apply to the Fund but not to its Underlying Index.

From time to time, the provider of the Underlying Index (“Index Provider”) may make changes to the index methodology or other adjustments to a Fund’s Underlying Index. Unless otherwise determined by BFA, any such change will be reflected in the calculation of the Underlying Index’s performance on a going-forward basis after the effective date of such change. Therefore, the performance of the Underlying Index that is shown for periods prior to the effective date of any such change generally will not be recalculated or restated to reflect the change.

BFA uses a representative sampling indexing strategy to manage the Funds. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities or other instruments that collectively has an investment profile similar to that of an applicable underlying index. Because the Funds use representative sampling, they can be expected to have a larger tracking error than if they used a replication indexing strategy. “Replication” is an indexing strategy in which a fund invests in substantially all of the components of its underlying index in approximately the same proportions as in the underlying index.

The iShares Strategic Metals ETF seeks to track the investment results of a commodities futures index that provides strategic exposure to metals that are essential to several structural themes, such as AI infrastructure, manufacturing, energy production and distribution, and national security.

1 Effective May 29, 2026, the name of the Fund changed from the iShares Transition-Enabling Metals ETF to the iShares Strategic Metals ETF, the Underlying Index changed from the ICE Clean Energy Transition Metals Index to the ICE Strategic Re-Industrialization Metals Index, and the investment objective was updated.

Fund’s Fund’s

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Additional Information About the Funds’ Risks

Each Fund is subject to various risks, any of which may adversely affect the Fund’s NAV, trading price, yield, total return and ability to meet its investment objective. Each Fund discloses its portfolio holdings daily at www.iShares.com. You could lose all or part of your investment in a Fund, which could underperform other investments. The table below identifies the principal and other (non-principal) risks that apply to each Fund. A Fund that invests in an underlying fund (“Underlying Fund”) or a Subsidiary also may be indirectly exposed to these risks through such investment. A description of each risk is provided after the table.

iShares Bloomberg Roll Select Commodity Strategy ETF

iShares GSCI Commodity Dynamic Roll Strategy ETF

iShares Strategic Metals ETF

Principal Risk | • Other Risk

Asset Class Risk Assets Under Management (AUM) Risk Authorized Participant Concentration Risk Carry Strategy Risk Cash Management Risk Cash Transactions Risk Close-Out Risk for Qualified Financial Contracts ••• Commodity-Linked Derivatives Risk Commodity Market Disruption Risk Commodity Risk Concentration Risk Counterparty Risk Credit Risk Currency Risk • Derivatives Risk Energy Sector Risk European Economic Risk ••• Futures Contract Risk Geographic and Security Risks ••• Illiquid Investments Risk • Income Risk Index-Related Risk Interest Rate Risk Issuer Risk Large Shareholder and Large-Scale Redemption Risk • Management Risk Market Risk Market Trading Risk National Closed Market Trading Risk • Non-Diversification Risk Non-U.S. Securities Risk • North American Economic Risk • Operational and Technology Risks Ownership Limitations Risk ••• •

Privately Issued Securities Risk

Reliance on Trading Partners Risk

Re-Industrialization Metals Risk

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iShares Bloomberg Roll Select Commodity Strategy ETF

iShares GSCI Commodity Dynamic Roll Strategy ETF

Principal Risk | • Other Risk

Risk of Investing in Developed Countries • Risk of Investing in Gold Risk of Investing in Industrial Metals ••• Risk of Investing in Precious Metals •• Risk of Investing in the U.S. Risk of Swap Agreements Small Fund Risk Subsidiary Risk Tax Risk Tracking Error Risk Valuation Risk

Asset Class Risk. The securities and other assets in a Fund’s portfolio or, if applicable, its Underlying Index may underperform in comparison to indexes that track, or assets that represent, other countries or geographic units, industries, markets, market segments, or asset classes. Various types of securities, other assets and indexes may experience cycles of outperformance and underperformance in comparison to financial markets generally. This divergence may be due to a number of factors including, among other things, inflation, interest rates, productivity, global demand for local products or resources, and regulation and governmental controls. This may cause a Fund to underperform other investment vehicles that invest in different asset classes.

Assets Under Management (AUM) Risk. From time to time, an Authorized Participant, a third-party investor, a Fund’s adviser, an affiliate of a Fund’s adviser, or another fund may invest in a Fund and hold its investment for a specific period of time to allow the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels, which could negatively impact the Fund.

Authorized Participant Concentration Risk. Only an Authorized Participant may engage in creation or redemption transactions directly with a Fund. There are a limited number of institutions that may act as Authorized Participants for the Fund, including on an agency basis on behalf of other market participants. No Authorized Participant is obligated to engage in creation or redemption transactions. To the extent that Authorized Participants exit the business or do not place creation or redemption orders for a Fund and no other Authorized Participant places orders, Fund shares are more likely to trade at a premium or discount to NAV and possibly face trading halts or delisting. Authorized Participant concentration risk may be heightened for a Fund that invests in securities issued by non-U.S. issuers or instruments with lower trading volume. Such assets often entail greater settlement and operational complexity and higher capital costs for Authorized Participants, which may limit the number of Authorized Participants that engage with the Fund.

Cash Management Risk. A Fund may maintain cash and cash equivalent positions as part of its investment strategy, for other portfolio management purposes and/or as collateral for derivative instruments. These cash and cash equivalent positions could constitute a significant portion of a Fund’s investments. A Fund that holds cash may earn reduced income (if any) on the cash and is subject to any fees imposed on large cash balances. If a significant amount of a Fund’s assets is invested in cash and cash equivalents, the Fund may underperform other funds that do not similarly invest in cash and cash equivalents. In addition, a Fund is subject to (i) the credit risk of the bank or other counterparty holding the cash and (ii) the risk that the counterparty may be unable or unwilling (or perceived as such) to honor its obligations.

Cash may be invested in institutional money market funds, including funds advised by BFA or its affiliates. An institutional money market fund does not maintain a stable $1.00 net asset value per share; rather, the fund’s net asset value fluctuates with changes in the values of the securities in which the fund invests, and the fund’s shares may be worth more or less than their original purchase price. An institutional money market fund is permitted to impose a liquidity fee on the redemption of its shares and generally is required to impose a liquidity fee when daily net redemptions exceed certain levels.

Risk of Investing in Agriculture and Livestock

iShares Strategic Metals ETF

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Cash Transactions Risk. Certain Funds expect to effect their creation and redemption transactions in cash, rather than as in-kind transactions. Paying redemption proceeds in cash rather than through in-kind delivery may require a Fund to sell investments at an inopportune time to obtain the cash needed to meet redemption orders. As a result, the Fund may recognize capital gains or losses that might not have been incurred if it had made an in-kind redemption, and it may pay out higher or lower annual capital gains distributions than ETFs that redeem in-kind. This may decrease the tax efficiency of the Fund compared with that of ETFs that use in-kind redemptions. The use of cash creations and redemptions also may cause a Fund’s shares to trade in the market at greater bid-ask spreads or greater premiums or discounts to the Fund’s NAV. Furthermore, a Fund may not be able to purchase or sell investments in connection with cash creations and redemptions, respectively, at the same price used to determine the Fund’s NAV for such creations or redemptions. To the extent that the maximum additional charge for creation or redemption transactions that can be allocated to Authorized Participants is insufficient to cover the execution costs of a cash transaction, a Fund’s performance could be negatively impacted.

Close-Out Risk for Qualified Financial Contracts. Regulations adopted by global prudential regulators require counterparties that are part of U.S. or foreign global systemically important banking organizations to include contractual restrictions on close-out and cross-default in agreements relating to qualified financial contracts. Qualified financial contracts include agreements relating to swaps, currency forwards and other derivatives as well as repurchase agreements and securities lending agreements. The restrictions prevent a Fund from closing out a qualified financial contract during a specified time period if the counterparty is subject to resolution proceedings and also prohibit a Fund from exercising default rights due to a receivership or similar proceeding of an affiliate of the counterparty. These requirements may increase credit risk and other risks to a Fund.

Commodity-Linked Derivatives Risk. The value of a commodity-linked derivative instrument (including swaps based on such instruments) typically is based upon the price movements of the underlying commodity or an economic variable linked to such price movements. Therefore, the value of commodity-linked derivative instruments may be affected by changes in overall economic conditions, interest rates, or factors affecting a particular commodity or industry, such as production, disease, climate conditions, supply or demand, politics, geopolitics, changes in international balance of payments and trade, currency devaluations and revaluations, market liquidity, and economic, political and regulatory developments. The current market prices, or “spot prices,” and the price at a specified future date implied by the value of certain commodity-linked derivatives (including swaps based on such instruments), or the “futures prices,” for commodities will vary depending upon expectations regarding market conditions. The value of commodity-linked investments tied to both spot and futures prices of commodities may fluctuate quickly and dramatically as a result of changes affecting a particular commodity and may or may not correlate to price movements in other asset classes, such as stocks, bonds and cash. Investments in commodity-linked derivatives may be subject to greater volatility than non-derivative based investments because of the leverage inherent in the use of derivatives. A highly liquid secondary market may not exist for certain commodity-linked derivatives, and there can be no assurance that one will develop. Commodity-linked derivatives also may be subject to credit and interest rate risks that in general affect the values of fixed-income securities. Therefore, at maturity, the Fund may receive more or less principal than it originally invested. The Fund might receive interest payments that are more or less than the stated coupon interest payments. Commodity derivatives are subject to the risk that the counterparty to the transaction, the exchange or trading facility on which they trade or the applicable clearing house may default or otherwise fail to perform. In addition, each exchange or trading facility on which derivatives are traded has the right to suspend or limit trading in all futures or other instruments that it lists. The Fund’s use of commodity-linked derivatives can result in large amounts of financial leverage. Although the Fund will not borrow money in order to increase the amount of its trading, the low margin deposits normally required in futures trading permit a high degree of leverage on the investment itself. Accordingly, a relatively small price movement in a futures contract may result in immediate and substantial losses to the Fund. Like other leveraged investments, any trade may result in losses in excess of the amount invested. Each of these factors and events could have a significant negative impact on the Fund.

The constituents of the Underlying Index may experience such disruptions in trading. The Fund may be negatively impacted by the cessation of trading in futures contracts included in the Fund’s Underlying Index or by a futures exchange imposing a limit price. If there is a market disruption event on a day when the Fund enters into or terminates a swap transaction tied to the Underlying Index, there could be an adverse impact on the Fund’s portfolio and the performance of the Fund. Market disruption events may delay payments on swaps tied to the futures market. In order to meet redemption requests, the Fund may be forced to terminate swaps tied to the futures market at disadvantageous times or prices if a market disruption event persists beyond two consecutive business days.

In the event of a market disruption event, the execution price the Fund will pay or receive upon the settlement of a swap transaction tied to the Underlying Index may differ from the Fund’s initial valuation of the swap, which is based on the official closing price of the Underlying Index, which uses the limit price of the affected contract. Authorized Participants who purchase or redeem shares on a day when one or more constituents of the Underlying Index is experiencing a market disruption event could bear additional costs associated with increased market

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risk because the execution price of the swap may differ from the value assigned to the swap on the day the Authorized Participant submits their creation or redemption order. Such market disruption events may have an adverse effect on the value of the Fund shares.

Commodity Risk. Commodity prices may be influenced or characterized by unpredictable factors, including, where applicable, high volatility, changes in supply and demand relationships, weather, agriculture, trade, pestilence, political instability, war, catastrophic even ts, changes in interest rates and monetary and other governmental policies, action and inaction, including price changes due to trade relations. Securities of companies that are dependent on a single commodity, or are concentrated in a single commodity sector, may typically exhibit even higher volatility attributable to commodity prices.

Concentration Risk. A Fund may be susceptible to an increased risk of loss, including losses due to adverse events that affect the Fund’s investments more than the market as a whole, to the extent that the Fund’s investments are concentrated in the securities or other assets of one or more issuers, countries or other geographic units, markets, industries, project types, or asset classes. A Fund with investment concentration may be more adversely affected by the underperformance of those assets, may experience greater price volatility and may be more susceptible to adverse economic, market, political or regulatory impacts on those assets compared to a fund that does not concentrate its investments.

Counterparty Risk. Certain commodity-linked derivative instruments, uncleared swaps and other forms of financial instruments that involve counterparties subject the Fund to the risk that the counterparty could default on its obligations under the agreement, either through the counterparty’s bankruptcy or failure to perform its obligations. In the event of a counterparty default, the Fund could experience lengthy delays in recovering some or all of its assets or obtain no recovery at all and, if the counterparty is subject to specified types of resolution proceedings, the Fund may be subject to stays that limit its ability to close out positions and limit risk. The Fund may deposit funds required to margin open positions in the derivative instruments subject to the CEA with a clearing broker registered as an FCM, which is an entity that solicits or accepts orders to buy or sell commodity futures, options, swaps or forward contracts and accepts money or other assets from customers to support such orders. The FCM could default on an obligation set forth in an agreement between the Fund and the FCM, including the FCM’s obligation to return margin posted in connection with the Fund’s futures contracts. If a counterparty defaults on its payment obligations, the Fund may lose money and the value of an investment in Fund shares may decrease. In addition, the Fund may engage in such investment transactions with a limited number of counterparties, which may increase the Fund’s exposure to counterparty credit risk.

Credit Risk. Credit risk is the risk that an issuer, guarantor or liquidity provider of a fixed-income security may be unable or unwilling, or may be perceived as unable or unwilling (whether by market participants, ratings agencies, pricing services or otherwise), to make timely principal and/or interest payments or to otherwise honor its obligations. It includes the risk that the security will be downgraded by a credit rating agency; generally, lower credit quality issuers present higher credit risks. The credit rating assigned to a security or its issuer does not necessarily reflect the issuer’s current financial condition or an investment’s volatility or liquidity. An actual or perceived decline in an issuer’s creditworthiness may result in a decrease in the value and liquidity of its securities as well as greater price volatility, which may make it difficult for a Fund to sell the securities and otherwise have an adverse impact on the Fund. It is possible that the ability of an issuer to meet its obligations will decline substantially during the period when a Fund owns securities of the issuer or that the issuer will default on its obligations or that the obligations of the issuer will be limited or restructured. A Fund may be adversely affected if an investment that it holds experiences a downgrade or a default.

Currency Risk. Because each Fund’s NAV is determined on the basis of the U.S. dollar, investors may lose money if the currency of a non U.S. market in which a Fund invests depreciates against the U.S. dollar or if there are delays or limits on repatriation of foreign currency, even if the foreign currency value of the Fund’s holdings in that market increases. Currency exchange rates can be very volatile and can change quickly and unpredictably. As a result, a Fund’s NAV may change quickly and without warning. In addition, a Fund may incur costs in connection with conversions between U.S. dollars and foreign currencies.

Derivatives Risk. A Fund’s use of derivatives ( e.g. , futures, forwards, swaps, options) may be riskier than other types of investments and may not have the intended effect on a Fund’s performance. Derivatives can be sensitive to changes in economic and market conditions, and they may increase a Fund’s volatility. A Fund also may experience reduced returns as a result of transaction costs and losses on derivatives positions. There is the risk of imperfect correlation between the value of a derivative and that of the asset underlying the derivative. Derivatives may create investment leverage, which could result in losses that significantly exceed a Fund’s original investment. Due to their complexity, derivatives are subject to the risk of mispricing or improper valuation. The possible lack of a liquid secondary market for derivatives and the resulting inability of a Fund to sell or otherwise close a derivatives position could expose a Fund to losses and could make derivatives more difficult for a Fund to value accurately.

Certain derivatives are subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligations. Certain derivatives are synthetic instruments that attempt to replicate the performance of certain reference assets. With regard to such derivatives, a Fund does not have a claim on the reference assets and is subject to enhanced counterparty risk. Regulatory requirements may delay or restrict a Fund’s exercise of remedies if a derivative counterparty were to default, which could adversely impact the Fund.

The use of derivatives exposes a Fund to operational risks, such as documentation and settlement issues, systems failures, inadequate controls and human error. Derivatives also involve legal risks, including insufficient documentation, insufficient capacity or authority of a

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counterparty, and the legality and enforceability of a contract. Derivatives expose a Fund to derivative liquidity risks relating to potential liquidity demands for a Fund to make margin, collateral, or settlement payments.

Energy Sector Risk. The performance of energy-related commodities is generally cyclical and highly dependent on energy prices. Energy prices may fluctuate significantly due to, among other things, national and international political changes, Organization of Petroleum Exporting Countries (“OPEC”) and non-OPEC energy exporters, such as the Russian Federation, policies and relationships, and the economies of key energy-consuming countries. The market value of energy-related commodities may decline for many reasons, including, among other things: changes in the levels and volatility of global energy prices, energy supply and demand, and capital expenditures on exploration and production of energy sources; exchange rates, interest rates, economic conditions, and tax treatment; terrorism, natural disasters and other catastrophes; and energy conservation efforts, increased competition and technological advances. The energy sector may also be subject to substantial government regulation and contractual fixed pricing. In 2020, in the context of the COVID-19 outbreak and disputes among oil-producing countries regarding potential limits on the production of crude oil, the energy sector has experienced increased volatility. In particular, significant market volatility occurred in the crude oil markets as well as the oil futures markets, which resulted in the market price of the front month WTI crude oil futures contract falling below zero for a period of time.

European Economic Risk. The Economic and Monetary Union (the “eurozone”) of the EU requires compliance by member states that are members of the eurozone with restrictions on inflation rates, deficits, interest rates and debt levels, as well as fiscal and monetary controls, each of which may significantly affect every country in Europe, including those countries that are not members of the eurozone. Additionally, European countries outside of the eurozone may present economic risks that are independent of the indirect effects that eurozone policies have on them. In particular, the U.K.’s economy may be affected by global economic, industrial and financial shifts. Changes in imports or exports, changes in governmental or EU regulations on trade, changes in the exchange rate of the euro (the common currency of eurozone countries), the default or threat of default by an EU member state on its sovereign debt and/or an economic recession in an EU member state may have a significant adverse effect on the economies of other EU member states and their trading partners. The European financial markets have historically experienced volatility and adverse trends due to concerns about economic downturns or government debt levels in several European countries, including, but not limited to, Austria, Belgium, Cyprus, France, Greece, Ireland, Italy, Portugal, Spain and Ukraine. These events have affected and may in the future adversely affect the exchange rate of the euro and may significantly affect European countries.

Responses to financial problems by European governments, central banks and others, including austerity measures and reforms, may not produce the desired results, may result in social unrest, may limit future growth and economic recovery or may have other unintended consequences. Further defaults or restructurings by governments and other entities of their debt could have additional adverse effects on economies, financial markets and asset valuations around the world. In addition, one or more countries may abandon the euro and/or withdraw from the EU. The U.K. left the EU (“Brexit”) on January 31, 2020. Brexit could adversely affect European or worldwide political, regulatory, economic or market conditions and could contribute to instability in global political institutions, regulatory agencies and financia l markets.

The national politics of countries in Europe have been unpredictable and subject to influence by disruptive political groups and ideologies, including, for example, secessionist movements. The governments of European countries may be subject to change and such countries may experience social and political unrest. Unanticipated or sudden political or social developments may result in sudden and significant investment losses. The occurrence of terrorist incidents throughout Europe or war in the region could also impact financial markets. The impact of these events is not clear but could be significant and far-reaching and could adversely affect the value and liquidity of a Fund’s investments.

Russian Invasion of Ukraine . Russia launched a large-scale invasion of Ukraine on February 24, 2022. The extent and duration of the military action, resulting sanctions and resulting future market disruptions, including declines in its stock markets and the value of the ruble against the U.S. dollar, are impossible to predict, but could be significant. Disruptions caused by Russian military action or other actions (including cyberattacks and espionage) or resulting actual and threatened responses to such activity, including purchasing and financing restrictions, boycotts or changes in consumer or purchaser preferences, sanctions, import and export restrictions, tariffs or cyberattacks on the Russian government, Russian companies or Russian individuals, including politicians, may impact Russia’s economy, Russian issuers of securities in which a Fund invests, or the economies of Europe as a whole. Actual and threatened responses to Russian military action may also impact the markets for certain Russian commodities, such as oil and natural gas, as well as other sectors of the Russian economy, and are likely to have collateral impacts on such sectors across Europe and globally.

A Fund that rolls futures contracts is subject to additional risk. If the market for the futures contracts is in “contango,” meaning that the price of futures contracts in nearer months is lower than the price of contracts in distant months, the sale of a near-term month contract will be at

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a lower price than the cost of the longer-term contract, resulting in a cost to roll the contract. A Fund may also lose money in rolling a futures contract if the two contracts are trading at different prices as compared to fair value – for example, if the futures contract held by the Fund is trading at a discount to fair value and the new contract being rolled into is trading at a premium to fair value. A Fund may not roll futures contracts on a predefined schedule; instead, BFA may determine to roll to another futures contract in an attempt to generate maximum yield. There can be no guarantee that such a strategy will produce the desired results.

In addition, U.S. regulations limit the types of foreign-listed futures contracts that U.S. investors are allowed to invest in. As a result, a Fund may not be able to gain the exposure it seeks through certain non-U.S. futures contracts.

Geographic and Security Risks. Issuers in a Fund’s portfolio may be located in, or otherwise connected to, parts of the world affected by natural disasters, such as severe heat, earthquakes, tornadoes, volcanic eruptions, wildfires, droughts, floods, hurricanes and tsunamis. In addition, issuers may be impacted by security concerns with respect to a country or region, such as war and other types of conflict, terrorism, strained international relations and territorial disputes. Any of these events may adversely affect the issuers, markets and economies to which a Fund is exposed, which may adversely affect the value of the Fund.

Illiquid Investments Risk. An illiquid investment is any investment that a Fund reasonably expects cannot be sold or disposed of in current market conditions in seven calendar days or less without significantly changing the market value of the investment. An investment may be illiquid due to, among other things, fewer participants or less capacity to make a market in the investment, the lack of an active market for the investment, capital controls, delays or limits on repatriation of local currency, and the insolvency of local governments. To the extent that a Fund invests in securities or other assets with substantial market and/or credit risk, the Fund will tend to have increased exposure to the risks associated with illiquid investments. Illiquid investments may be harder to value, especially in changing markets.

Liquid investments may become illiquid after purchase by a Fund, particularly during periods of market turmoil. There can be no assurance that a security or other asset that is deemed to be liquid when purchased will continue to be liquid for as long as it is held by a Fund, and any security or other asset held by a Fund may be deemed an illiquid investment pursuant to the Fund’s liquidity risk management program.

Holdings of illiquid investments may reduce a Fund’s returns because the Fund may be unable to transact at advantageous times or prices. If a Fund is forced to sell underlying investments at reduced prices or under unfavorable conditions to meet redemption requests or for other cash needs, the Fund may suffer a loss. This may be magnified in a rising interest rate environment or other circumstances where redemptions of Fund shares may be greater than normal. If other market participants attempt to liquidate holdings at the same time as a Fund, this will lead to an increased supply of the Fund’s underlying investments in the market and contribute to greater illiquid investments risk and downward pricing pressure. In addition, if a Fund is limited in its ability to sell illiquid investments during periods when shareholders are redeeming their shares, the Fund will need to sell liquid securities to meet redemption requests, and illiquid securities will become a larger portion of the Fund’s holdings. During periods of market volatility, liquidity in the market for a Fund’s shares may be impacted by the liquidity in the market for the underlying securities or other assets held by the Fund, which could lead to the Fund’s shares trading at a premium or discount to the Fund’s NAV.

Income Risk. A Fund’s income may decline due to falling interest rates or other factors. This can occur because the Fund may be required to invest in lower-yielding bonds when a bond in the Fund’s portfolio matures, is near maturity, is called or is prepaid or when the Fund otherwise needs to purchase additional bonds, such as due to a substitution in the underlying index for an index fund.

Index-Related Risk. A Fund that tracks an Underlying Index seeks to achieve a return that corresponds generally to the price and yield performance, before fees and expenses, of its Underlying Index as published by the Index Provider. There is no assurance that the Index Provider or its agents will construct or calculate the Underlying Index accurately. While the Index Provider describes what the Underlying Index is designed to achieve, neither the Index Provider nor its agents provide any warranty or accept any liability regarding the quality, accuracy or completeness of the Underlying Index or its related data, and they do not guarantee that the Underlying Index will be in line with the Index Provider’s methodology. BFA also does not provide any warranty or guarantee against the Index Provider’s or any agent’s errors.

The Index Provider may rely on various sources of information to assess the criteria of components of the Underlying Index, including information that may be based on assumptions and estimates. Neither a Fund nor BFA can offer assurances that the Index Provider’s methodology or sources of information will provide an accurate assessment of included components or will result in the Fund meeting its investment objective. Errors in index data, index computations or the construction of an Underlying Index in accordance with its methodology may occur, and the Index Provider may not identify or correct them promptly or at all, particularly for indexes that are less commonly used as benchmarks. In addition, there may be heightened risks associated with the adequacy and reliability of information about emerging markets constituents, as such markets may have less information available or less regulatory oversight. Errors related to an Underlying Index may negatively or positively impact a Fund and its shareholders. For example, if the Underlying Index contains incorrect constituents, the Fund will have exposure to such constituents and will be underexposed to the Underlying Index’s other constituents. Shareholders should understand that any gains from an Index Provider’s errors will be kept by the Fund and its shareholders and any losses or costs from such errors will be borne by the Fund and its shareholders.

Unusual market conditions or other unforeseen circumstances (such as natural disasters, political unrest or war) may impact an Index Provider or a third-party data provider and could cause the Index Provider to postpone a scheduled rebalance to an Underlying Index. This could cause the Underlying Index to vary from its normal or expected composition. If a scheduled rebalance is postponed, index constituents that would otherwise be removed at the rebalance (due to, for example, changes in market capitalization or issuer credit ratings) may remain, causing the performance and constituents of the Underlying Index to vary from those expected under normal conditions. In addition, to the

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extent circumstances evolve between periodic index reviews and reconstitutions, an Underlying Index may include constituents that do not align with its objective or selection criteria, and the Fund tracking the Underlying Index may be similarly affected.

In addition to scheduled rebalances, an Index Provider or its agents may carry out ad hoc index rebalances due to reaching certain weighting constraints, unusual market conditions, corporate events, or corrections of errors. The relevant Fund will in turn rebalance its portfolio to attempt to increase the correlation between the portfolio and the Underlying Index. The Fund and its shareholders will directly bear any transaction costs and market exposure from such portfolio rebalancing. Therefore, index-related errors and ad hoc rebalances may increase a Fund’s costs and tracking error.

Interest Rate Risk. Interest rate changes can be sudden and unpredictable and are influenced by a number of factors, including government policy, monetary policy, inflation expectations, perceptions of risk, and supply and demand for fixed-income securities. Changes in interest rates may have unpredictable effects on fixed-income markets and may result in heightened volatility and lower liquidity for certain instruments, which may adversely affect a Fund’s performance. When interest rates rise, the value of fixed-income securities or other instruments sensitive to interest rates typically decreases. Duration is a measure of how sensitive a bond is to interest rate changes. Fixed income securities with longer durations tend to be more sensitive to interest rate changes, and their prices usually are more volatile than those of shorter-duration securities. For example, if a bond has a duration of five years and interest rates rise, the price of the bond will likely decline by a greater percentage than for a bond with a one-year duration. To the extent a Fund invests a substantial portion of its assets in fixed-income securities with longer duration, rising interest rates may cause the value of the Fund’s investments to decline significantly, which would adversely affect the Fund’s performance.

In addition, changes in prevailing interest rates, particularly sudden and significant changes, may lead to fluctuations in the value of floating rate debt securities, because the rates for those securities typically reset only periodically. Additionally, during periods of very low or negative interest rates, a Fund may be unable to maintain positive returns or pay dividends to shareholders. Under certain market conditions when interest rates are set at low levels and the market prices of portfolio securities have increased, a Fund may have a very low or even negative yield, which would cause the Fund to lose money under certain conditions.

Decreases in market-making capacity for fixed-income dealers may lead to lower trading volume, heightened volatility, wider bid-ask spreads and less transparent pricing in certain fixed-income markets.

Issuer Risk. The performance of a Fund depends on the performance of individual securities or other assets to which the Fund has exposure. The value of securities or other assets may decline, or perform differently from the market as a whole, due to changes in the financial condition or credit rating of the issuer or counterparty.

Large Shareholder and Large-Scale Redemption Risk. Certain shareholders of a Fund, including an Authorized Participant, a third-party investor, the Fund’s adviser, an affiliate of the Fund’s adviser, a market maker, or another entity, may from time to time own or manage a substantial amount of Fund shares or may hold their investment in the Fund for a limited period of time. These shareholders may also pledge or loan Fund shares (to secure financing or otherwise), which may result in the shares becoming concentrated in another party. There can be no assurance that any large shareholder or large group of shareholders would not redeem their investment or that the size of a Fund would be maintained. Redemptions of a large number of Fund shares may adversely affect a Fund’s liquidity and net assets. To the extent a Fund permits redemptions in cash, these redemptions may force the Fund to sell portfolio securities or other assets when it might not otherwise do so, which may negatively impact the Fund’s NAV, have a material effect on the market price of Fund shares, increase the Fund’s brokerage costs, accelerate the realization of taxable income and/or capital gains, and cause the Fund to make taxable distributions to its shareholders earlier than the Fund otherwise would have. In addition, under certain circumstances, non-redeeming shareholders may be treated as receiving a disproportionately large taxable distribution during or with respect to such tax year. A Fund also may be required to sell its more liquid investments to meet a large redemption, in which case the Fund’s remaining assets may be less liquid, more volatile, and more difficult to price.

To the extent these large shareholders transact in Fund shares on the secondary market, such transactions may account for a large percentage of the trading volume for Fund shares and may, therefore, have a material upward or downward effect on the market price of the shares. In addition, large purchases of Fund shares may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would, diluting its investment returns.

Management Risk. An index Fund invests in securities or other assets included in, or representative of, its Underlying Index, regardless of their investment merits. Such a Fund may be affected by a general decline in market segments related to its Underlying Index, and BFA generally does not attempt to invest the Fund’s assets in defensive positions under any market conditions, including declining markets. Market disruptions and regulatory restrictions could have an adverse effect on a Fund’s ability to adjust its exposure to the required levels in order to track its Underlying Index. Because BFA uses a representative sampling indexing strategy, a Fund will not fully replicate its Underlying Index and may hold securities or other assets not included in the Underlying Index. As a result, a Fund is subject to the risk that BFA’s investment strategy, whose implementation is subject to a number of constraints, may not produce the intended results. There is no guarantee that a Fund’s investment results will have a high degree of correlation to those of its Underlying Index or that a Fund will achieve its investment objective.

Market Risk. A Fund could lose money over short periods due to short-term market movements and over longer periods during more prolonged market downturns. The value of a financial instrument or other asset may decline due to changes in general market conditions, economic trends or events that are not specifically related to the particular instrument or asset, or factors that affect one or more issuers,

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counterparties, exchanges, countries or other geographic units, markets, industries, or asset classes. Local, regional or global events such as war, acts of terrorism, pandemics or other public health issues, recessions, the prospect or occurrence of a sovereign default or other financial crisis, or other events could have a significant impact on a Fund and its investments and could result in increased premiums or discounts to a Fund’s NAV. Changes in market and economic conditions generally do not have the same impact on all types of instruments and assets.

Market Trading Risk. A Fund faces numerous market trading risks, any of which may lead to its shares trading in the secondary market at a premium or discount to NAV or to the intraday value of the Fund’s portfolio holdings. If you buy Fund shares at a time when the market price is at a premium to NAV or sell Fund shares at a time when the market price is at a discount to the NAV, you may pay significantly more or receive significantly less than the underlying value of the Fund shares.

Absence of an Active Primary Market. Although Fund shares are listed for trading on one or more stock exchanges, there can be no assurance that an active primary trading market for Fund shares will develop or be maintained by market makers or Authorized Participants.

Secondary Listing Risks. A Fund’s shares may be listed or traded on U.S. and non-U.S. stock exchanges other than the U.S. stock exchange where the Fund’s primary listing is maintained. Fund shares also may be available to non-U.S. investors through funds or structured investment vehicles similar to depositary receipts. There can be no assurance that a Fund’s shares will continue to trade on any such stock exchange or in any market or that a Fund’s shares will continue to meet the requirements for exchange listing or market trading. A Fund’s shares may be less actively traded in certain markets than in others, and investors are subject to the execution and settlement risks and market standards of the market where they or their broker direct their trades for execution. Certain information that is available to investors who trade Fund shares on a U.S. stock exchange during regular U.S. market hours may not be available to investors who trade in other markets, which may result in secondary market prices in such markets being less efficient.

Secondary Market Trading Risk. Shares of a Fund may trade in the secondary market at times when the Fund does not accept orders to create or redeem shares. At such times, shares may trade in the secondary market with more significant premiums or discounts to NAV than might be experienced at times when the Fund accepts creation and redemption orders. Securities held by a Fund may be traded in markets that close at a different time than an exchange on which Fund shares are traded. Liquidity in those securities may be reduced after the applicable closing time. As a result, during the time when the exchange is open but after the applicable market closing, fixing or settlement time, there may be wider bid/ask spreads on the exchange and a greater premium or discount to NAV.

In stressed market conditions, the market for a Fund’s shares may become less liquid in response to deteriorating liquidity in the markets for the Fund’s portfolio holdings, and an investor may be unable to sell their Fund shares.

Secondary market trading in Fund shares may be halted by a stock exchange because of market conditions or for other reasons. In times of extraordinary market volatility, Fund shares may be subject to trading halts pursuant to “circuit breaker” rules of a stock exchange or market. If there is a trading halt or unanticipated closure of an exchange or market, an investor may be unable to purchase or sell Fund shares. In addition, if trading in certain securities or financial instruments is restricted, this may disrupt a Fund’s creation/redemption process, affect the price at which Fund shares trade in the secondary market, and result in a Fund being unable to trade certain securities or financial instruments. In such circumstances, a Fund may be unable to rebalance its portfolio or accurately price its portfolio holdings and may incur substantial trading losses.

Shares of a Fund, similar to shares of other issuers listed on a stock exchange, may be sold short and are therefore subject to the risk of increased volatility and price decreases associated with being sold short. In addition, trading activity in derivative products based on a Fund may lead to increased trading volume and volatility in the secondary market for the shares of the Fund.

Fund Shares May Trade at Prices Other Than NAV. V. Shares of a Fund trade on stock exchanges at prices at, above or below the Fund’s most recent NAV. A Fund’s NAV is calculated at the end of each business day and fluctuates with changes in the market value of the Fund’s portfolio holdings. The trading price of a Fund’s shares fluctuates throughout trading hours based on both market supply of and demand for Fund shares and the underlying value of the Fund’s portfolio holdings or NAV. As a result, the trading prices of a Fund’s shares may deviate significantly from NAV during times of market volatility, significant redemption requests, or other unusual market conditions

However, because Fund shares can be created and redeemed in Creation Units at NAV, BFA believes that large discounts or premiums to a Fund’s NAV are not likely to be sustained over the long term (unlike shares of many closed-end funds, which frequently trade at appreciable discounts from, and sometimes at premiums to, their NAVs). While the creation/redemption feature is designed to make it more likely that a Fund’s shares normally will trade on stock exchanges at prices close to the Fund’s next calculated NAV, exchange prices are not expected to correlate exactly with the Fund’s NAV due to timing reasons, supply and demand imbalances and other factors. In addition, disruptions to creations and redemptions, including disruptions at market makers, Authorized Participants, or other market participants, and during periods of significant market volatility, may result in trading prices for shares of a Fund that differ significantly from its NAV. Authorized Participants may be less willing to create or redeem a Fund’s shares if there is a lack of an active market for such shares or the Fund’s underlying investments, which may contribute to the Fund’s shares trading at a premium or discount to NAV.

Costs of Buying or Selling Fund Shares. Buying or selling Fund shares on an exchange involves two types of costs that apply to all securities transactions. When buying or selling Fund shares through a broker, you will likely incur a brokerage commission and other charges. In addition, you may incur the cost of the “spread,” which is the difference between what investors are willing to pay for Fund shares (the “bid” price) and the price at which they are willing to sell Fund shares (the “ask” price). The spread varies over time for Fund shares based on

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trading volume and market liquidity. It is generally narrower if a Fund has more trading volume and market liquidity and wider if a Fund has less trading volume and market liquidity. Increased market volatility also may cause wider spreads. In addition, there may be regulatory and other charges that are incurred as a result of trading activity. Because of the costs inherent in buying or selling Fund shares, frequent trading may detract significantly from investment results, and an investment in Fund shares may not be advisable for investors who anticipate regularly making small investments through a brokerage account.

National Closed Market Trading Risk. To the extent that securities or other assets held by a Fund trade on foreign exchanges or in foreign markets that may be closed when the securities exchange on which the Fund’s shares trade is open, there are likely to be deviations between such asset’s current price and its last quoted price ( i.e ., the quote from the closed foreign market to the Fund). The impact of a closed foreign market on a Fund is likely to be greater where a large portion of the Fund’s holdings trade on a closed foreign market or when a foreign market is closed for unscheduled reasons. These deviations could result in premiums or discounts to a Fund’s NAV that may be greater than those experienced by other funds.

Non-Diversification Risk. A Fund that is classified as “non-diversified” may invest a greater percentage of its assets in securities or other instruments representing a small number of issuers or counterparties, compared with funds that are classified as “diversified.” A non diversified Fund thus may be more susceptible to the risks associated with these particular issuers or counterparties. The gains and losses on such holdings may have a greater impact on a non-diversified Fund’s performance than they would on the performance of a diversified Fund, and a non-diversified Fund’s NAV may be more volatile.

Non-U.S. Securities Risk. Securities issued by non-U.S. issuers (including depositary receipts) are subject to different legal, regulatory, political, economic, and market risks than securities issued by U.S. issuers. To the extent that investments are made in a limited number of countries, events in those countries will have a more significant impact on a Fund. The risks of investing in non-U.S. securities include the following, any of which may have an adverse impact on a Fund: Less liquid markets, which may make valuing securities more difficult; Greater market volatility; Government intervention in issuers’ operations or structure; Government expropriation or nationalization of assets; Exchange rate fluctuations and currency controls; Limitations on the foreign ownership of securities; Imposition of withholding or other taxes; Restrictions on the repatriation of capital; Higher transaction and custody costs; Foreign market trading hours, different clearing and settlement procedures, and holiday schedules, which may limit a Fund’s ability to engage in portfolio transactions; Less regulation of the securities and other financial markets; Less availability of public information about issuers; Weaker accounting, audit, disclosure and financial reporting requirements and the risk of being delisted from U.S. exchanges; Difficulties in enforcing contractual obligations; and Legal principles relating to corporate governance, directors’ fiduciary duties and liabilities, and shareholder rights that are less robust than those that apply in the U.S.

Withholding Tax Reclaims Risk . A Fund that holds non-U.S. securities may file claims to recover withholding tax on dividend and interest income (if any) received from issuers in certain countries where such withholding tax reclaim is possible. Whether or when a Fund will receive a withholding tax refund is within the control of the tax authorities in such countries. Where a Fund expects to recover withholding tax based on a continuous assessment of the probability of recovery, the Fund’s NAV generally includes accruals for such tax refunds. Funds continue to evaluate tax developments for potential impact to the probability of recovery. If the likelihood of receiving a tax refund materially decreases, such as due to a change in tax regulation or approach, accruals in a Fund’s NAV for such refunds may be written down partially or in full, which will adversely affect the Fund’s NAV. Investors in a Fund at the time when an accrual is written down will bear the impact of any resulting reduction in NAV regardless of whether they were investors during the accrual period. Conversely, if a Fund receives a tax refund that was not previously accrued, investors in the Fund at the time the claim is successful will benefit from any resulting increase in the Fund’s NAV. Investors who sold their shares prior to such time will not benefit from any such NAV increase.

North American Economic Risk . A decrease in imports or exports, changes in trade regulations or an economic recession in any North American country can have a significant economic effect on the entire North American region and on some or all of the North American countries in which a Fund invests.

The U.S. is Canada’s and Mexico’s largest trading and investment partner. The Canadian and Mexican economies are significantly affected by developments in the U.S. economy. Since the implementation of the North American Free Trade Agreement (“NAFTA”) in 1994 among Canada, the U.S. and Mexico, total merchandise trade among the three countries has increased. However, political developments including the implementation of tariffs by the U.S. and the renegotiation of NAFTA in the form of the United States-Mexico-Canada Agreement

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(“USMCA”), which replaced NAFTA on July 1, 2020, could negatively affect North America’s economic outlook and, as a result, the value of securities held by a Fund. Policy and legislative changes in one country may have a significant effect on North American markets generally, as well as on the value of certain securities held by a Fund.

Operational and Technology Risks. A Fund and the entities with which it interacts directly or indirectly are susceptible to operational and technology risks, including those related to human errors, processing errors, communication errors, systems failures, cybersecurity incidents, and the use of artificial intelligence and machine learning (“AI”), which may result in losses for the Fund and its shareholders or impair the Fund’s operations. These entities include, but are not limited to, a Fund’s adviser, administrator, distributor, other service providers (e.g., index and benchmark providers, accountants, custodians, and transfer agents), financial intermediaries, counterparties, market makers, Authorized Participants, listing exchanges, other financial market operators, and governmental authorities. Operational and technology risks for the issuers in which a Fund invests could also result in material adverse consequences for such issuers and may cause the Fund’s investments in such issuers to lose value. A Fund may incur substantial costs in order to mitigate operational and technology risks.

Cybersecurity incidents can result from deliberate attacks or unintentional events against an issuer in which a Fund invests, the Fund or any of its service providers. They include, but are not limited to, gaining unauthorized access to systems, misappropriating assets or sensitive information, corrupting or destroying data, and causing operational disruption. Geopolitical tension may increase the scale and sophistication of deliberate attacks, particularly those from nation states or from entities with nation state backing. Cybersecurity incidents may result in any of the following: financial losses; interference with a Fund’s ability to calculate its NAV; disclosure of confidential information; impediments to trading; submission of erroneous trades by a Fund or erroneous subscription or redemption orders; the inability of a Fund or its service providers to transact business; violations of applicable privacy and other laws; regulatory fines; penalties; reputational damage; reimbursement or other compensation costs; and other legal and compliance expenses. Furthermore, cybersecurity incidents may render records of a Fund, including records relating to its assets and transactions, shareholder ownership of Fund shares, and other data integral to a Fund’s functioning, inaccessible, inaccurate or incomplete. Power outages, natural disasters, equipment malfunctions and processing errors that threaten information and technology systems relied upon by a Fund or its service providers, as well as market events that occur at a pace that overloads these systems, may also disrupt business operations or impact critical data. In addition, the risks of increased use of AI technologies, such as machine learning, include data risk, transparency risk, and operational risk. The AI technologies, which are generally highly reliant on the collection and analysis of large amounts of data, may incorporate biased or inaccurate data, and it is not possible or practicable to incorporate all relevant data into such technologies. The output or results of any such AI technologies may therefore be incomplete, erroneous, distorted or misleading. Further, AI tools may lack transparency as to how data is utilized and how outputs are generated. AI technologies may also allow the unintended introduction of vulnerabilities into infrastructures and applications. A Fund and its shareholders could be negatively impacted as a result of these risks associated with AI technologies. AI technologies and their current and potential future applications, and the regulatory frameworks within which they operate, continue to quickly evolve, and it is impossible to anticipate the full scope of future AI capabilities or rules and the associated risks to a Fund.

While a Fund’s service providers are required to have appropriate operational, information security and cybersecurity risk management policies and procedures, their methods of risk management may differ from those of the Fund in the setting of priorities, the personnel and resources available or the effectiveness of relevant controls. Each Fund and its adviser seek to reduce these risks through controls, procedures and oversight, including establishing business continuity plans and risk management systems. However, there are inherent limitations in such plans and systems, including the possibility that certain risks that may affect a Fund have not been identified or may emerge in the future; that such plans and systems may not completely eliminate the occurrence or mitigate the effects of operational or information security disruptions or failures or of cybersecurity incidents; or that prevention and remediation efforts will not be successful or that incidents will go undetected. A Fund cannot control the systems, information security or other cybersecurity of the issuers in which it invests or its service providers, counterparties, and other third parties whose activities affect the Fund.

Lastly, the regulatory climate governing cybersecurity and data protection is developing quickly and may vary considerably across jurisdictions. Regulators continue to develop new rules and standards related to cybersecurity and data protection. Compliance with evolving regulations can be demanding and costly, requiring substantial resources to monitor and implement required changes.

Ownership Limitations Risk. If certain aggregate and/or fund-level ownership thresholds are reached through transactions undertaken by BFA, its affiliates or a Fund, or as a result of third-party transactions or actions by an issuer or regulator, the ability of BFA and its affiliates on behalf of clients (including a Fund) to purchase or dispose of investments, exercise rights or undertake business transactions may be restricted by law, regulation or rules or otherwise impaired. The capacity of a Fund to invest in certain securities or other assets may be affected by the relevant threshold limits, and such limitations may have adverse effects on the liquidity and performance of a Fund’s portfolio holdings.

For example, ownership limits may apply to securities whose issuers operate in certain regulated industries or in certain international markets. Such limits also may apply where the investing entity (such as a Fund) is subject to corporate or regulatory ownership restrictions or invests in certain futures or other derivative transactions. In certain circumstances, aggregate and/or fund-level amounts invested or voted by BFA and its affiliates for client funds and accounts managed by BFA (including a Fund) may not exceed the relevant limits without the grant of a license or other regulatory or corporate approval, order, consent, relief or non-disapproval. However, there is no guarantee that permission will be granted or that, once granted, it will not be modified or revoked at a later date with minimal or no notice. In other cases, exceeding such thresholds may cause BFA and its affiliates, a Fund or other client accounts to suffer disadvantages or business restrictions.

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Ownership limitations are highly complex. It is possible that, despite BFA’s intent to either comply with or be granted permission to exceed ownership limitations, it may inadvertently breach a limit or violate the corporate or regulatory approval, order, consent, relief or non disapproval that was obtained.

Privately Issued Securities Risk. Privately issued securities are securities that have not been registered under the 1933 Act, including securities that are normally purchased pursuant to Rule 144A or Regulation S under the 1933 Act. Such securities typically are subject to legal restrictions on resale and generally are not traded in established public markets. As a result, privately issued securities may be deemed to be illiquid investments, may be more difficult to value than publicly traded securities, may be subject to wide fluctuations in value and may have higher transaction costs. There can be no assurance that a trading market will exist at any time for any particular privately issued security, especially under adverse market or economic conditions or if there are adverse events related to the issuer. Because there may be relatively few potential purchasers for privately issued securities, a Fund may find it more difficult to sell such securities when it may be advisable to do so, or a Fund may be able to sell such securities only at prices that are lower than if such securities were more widely held and traded. Difficulty in selling such securities at a desirable time or price may result in a loss to a Fund.

At times, it may be more difficult to determine the fair value of privately issued securities for purposes of computing a Fund’s NAV due to the absence of an active trading market. There can be no assurance that a privately issued security that is deemed to be liquid when purchased will continue to be liquid for as long as it is held by a Fund, and its value may decline as a result, which may adversely affect the Fund.

Reliance on Trading Partners Risk. The economies of some countries or regions depend on trading with certain key trading partners. A reduction in spending on the products and services of these countries or regions, the institution of tariffs or other trade barriers by a key trading partner or a slowdown in the economy of a key trading partner may cause an adverse impact on the economies of such countries or regions and may negatively impact the performance of a Fund with exposure to those countries or regions.

Risk of Investing in Agriculture and Livestock. The agricultural and livestock sectors are subject to government subsidy policies and environmental, health and safety laws and regulations. Specific governmental policies, such as taxes, tariffs, duties, subsidies and import and export restrictions on agricultural commodities, commodity products and livestock, can influence the profitability of investing in agriculture and livestock. Import restrictions and tariffs that have recently been imposed by foreign countries on U.S. agricultural and livestock products are expected to negatively impact the profitability of investing in these products. These industries may also be adversely affected by changes in commercial and consumer demand for their products. A growing competitive landscape and increased availability of such commodities can influence: (i) the planting and raising of certain crops/livestock versus other uses of resources; (ii) the location and size of crop and livestock production; (iii) whether unprocessed or processed commodity products are traded; and (iv) the volume and types of imports and exports. Economic recession or labor difficulties may also lead to a decrease in demand for the products and services involved in agriculture. As a result, the price of agricultural or livestock commodities could decline, which would affect the performance of the Fund.

The agricultural and livestock sectors also are particularly sensitive to changing weather conditions, such as floods or droughts, natural disasters and other factors, such as disease outbreaks and pollution.

Risk of Investing in Developed Countries. Investment in developed country issuers will subject a Fund to legal, regulatory, political, currency, security, economic and other risks associated with developed countries. Developed countries generally tend to rely on services sectors ( e.g., the financial services sector) as the primary means of economic growth. A prolonged slowdown in one or more services sectors is likely to have a negative impact on economies of certain developed countries, although economies of individual developed countries can be impacted by slowdowns in other sectors. In the past, certain developed countries have been targets of terrorism, and some geographic areas in which a Fund invests have experienced strained international relations due to territorial disputes, historical animosities, defense concerns and other security concerns. These situations may cause uncertainty in the financial markets in these countries or geographic areas and may adversely affect the performance of the issuers to which a Fund has exposure. Heavy regulation of certain markets, including labor and product markets, may have an adverse effect on certain issuers. Such regulations may negatively affect economic growth or cause prolonged periods of recession. Many developed countries are heavily indebted and face rising healthcare and retirement expenses. In addition, price fluctuations of certain commodities and regulations impacting the import of commodities may negatively affect developed country economies.

The performance of re-industrialization metals (i.e., metals used to facilitate AI infrastructure, manufacturing, energy production and distribution, and national security) is highly dependent on manufacturing reshoring, amplified battery production, increased defense spending and the expansion of AI infrastructure. Investments in re-industrialization metals may be speculative and subject to greater price volatility than investments in other types of assets. The market value of re-industrialization metals may be significantly affected for many reasons, including, among others, obsolescence of existing technology, changes in energy prices, worldwide metal prices and extraction and production costs, global political changes, terrorism, war, natural disasters and other catastrophes, government regulations and subsidies, supply chains, and taxation policies. Worldwide metal prices may fluctuate substantially over short periods of time, and as a result, the Fund’s share price may be more volatile than other types of investments. Such risks may be heightened to the extent the Fund’s Commodity-Linked Investments provide exposure to emerging markets. In addition, the industry is relatively nascent and under-researched in comparison to more established and mature sectors, and should therefore be regarded as having greater investment risk.

Re-Industrialization Metals Risk.

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This sector also could be adversely affected by changes in exchange rates and inflation, imposition of import controls, increased competition, and changes in industrial and commercial demand for industrial metals as the principal supplies of metal industries may be concentrated in a small number of countries and regions.

Risk of Investing in Precious Metals. Prices of precious metals and of precious metal-related financial instruments historically have been very volatile. The high volatility of precious metal prices may adversely affect the prices of financial instruments that derive their value from the price of underlying precious metals. The production and sale of precious metals by governments, central banks or other larger holders can be affected by various economic, financial, social and political factors, which may be unpredictable and may have a significant impact on the prices of precious metals. Other factors that may affect the prices of precious metal-related financial instruments include changes in inflation, the outlook for inflation and changes in industrial and commercial demand for precious metals.

Some precious metals mining operation companies may hedge, to varying degrees, their exposure to declines in precious metals prices by selling forward future production. This may affect prices of precious metals-related financial instruments, which in turn may limit the Fund’s ability to benefit from future increases in the price of precious metals, thereby lowering returns to the Fund.

Additionally, increased environmental or labor costs may depress the value of mining and metal investments.

Risk of Investing in the U.S. Investing in U.S. issuers involves legal, regulatory, political, currency, security, and economic risks that are specific to the U.S. A decrease in imports or exports, changes in trade regulations, inflation, an economic recession, financial system stress, or political turmoil, among other risks, may have an adverse effect on the U.S. economy and the securities listed on U.S. exchanges. The U.S. is also subject to the risk of natural disasters, such as droughts, earthquakes, fires and floods. U.S. security risks include acts of terrorism, internal unrest and a deterioration in relations between the U.S. and certain countries. Any of these may adversely affect the U.S. economy, financial markets or issuers.

Governmental agencies project that the U.S. will maintain elevated public debt levels for the foreseeable future. Although elevated debt levels do not necessarily indicate or cause economic problems, the costs of servicing such debt may constrain future economic growth. Circumstances could arise that could prevent the timely payment of interest or principal on U.S. government debt, such as reaching the legislative “debt ceiling.” Such non-payment would result in substantial negative consequences for the U.S. economy and the global financial system.

Risk of Swap Agreements. Swaps can involve greater risks than direct investment in securities or physical commodities because swaps may be leveraged and are subject to counterparty risk ( e.g. , the risk of a counterparty defaulting on the obligation or bankruptcy), credit risk and pricing risk ( i.e. , swaps may be difficult to value). Swaps may be subject to illiquidity risk, and it may not be possible for the Fund to liquidate a swap position at an advantageous time or price, which may result in significant losses. Certain standardized interest rate and credit default swaps are required to be traded on an exchange or trading platform and centrally cleared. Most other swaps are entered into on a negotiated, bi-lateral basis and traded in the over-the-counter market. Swaps are subject to bi-lateral variation margin. The Fund is required by financial regulators to post initial margin in connection with trading over-the-counter swaps. These requirements may raise the costs for the Fund’s investment in swaps. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free. Swaps entered into by the Fund through its Subsidiary are not expected to be centrally cleared and thus will expose the Fund to counter-party default risk and illiquidity risk, as liquidity depends on the willingness of counterparties to enter into, and the ability of counterparties to hedge the risks of, such contracts. All swaps require posting of collateral, which may restrict the ability of the Fund to invest the assets in different ways and which involve costs to the Fund. Swaps provide customized contractual terms, which may not, in all cases, provide the hedging or other intended benefits.

Risk of Investing in Gold. The Fund has exposure to gold through its investments in total return swaps on the Underlying Index. Thus, the Fund’s portfolio may be adversely affected by changes or trends in the price of gold. The price of gold and of gold-related instruments historically has been volatile. Governments, central banks, or other large holders can influence the production and sale of gold, which may adversely affect the supply and price of gold, and thus, the performance of the Fund. Unpredictable economic, financial, social, and political factors may also affect the price of gold.

Investments related to gold are considered to be speculative. The price of gold may fluctuate sharply over short periods of time due to, among other things: (i) changes in inflation or expectations regarding inflation in various countries; (ii) the availability of supply; (iii) chang es in demand; (iv) investment speculation and political uncertainty; and (v) monetary and other economic policies of various governments.

Risk of Investing in Industrial Metals. The price of industrial metals may be adversely affected by unpredictable international economic and political policies, such as currency devaluations or revaluations, economic and social conditions within an individual country, trade imbalances, or trade or currency restrictions between countries. As a result, the price of industrial metals historically has been subject to substantial price fluctuations over short periods of time.

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or Congress enacts legislation, limiting the circumstances in which each Fund’s income with respect to the Subsidiary will be considered “qualifying income,” the Fund might be required to make changes to its operations, which could reduce the Fund’s ability to gain investment exposure to commodities. Fund shareholders could also experience adverse tax consequences in such circumstances. Moreover, changes in the laws of the U.S. and/or the Cayman Islands could result in the inability of each Fund and/or Subsidiary to operate as described in the Prospectus and in the SAI, and could adversely affect the Fund. For example, the Cayman Islands does not currently impose any income, corporate or capital gains taxes, estate duty, inheritance tax, gift tax or withholding tax on the Subsidiary. If Cayman Islands law changes such that the Subsidiary must pay Cayman Islands taxes, Fund shareholders would likely experience decreased investment returns.

Tracking Error Risk. A Fund that tracks an index is subject to the risk of “tracking error,” which is the divergence of a Fund’s performance from that of the Underlying Index. Tracking error may occur due to a number of factors, including differences between the securities and other assets held in a Fund’s portfolio and those included in the Underlying Index; differences in the timing and methodologies used to value securities and other assets; transaction costs and other expenses incurred by a Fund that the Underlying Index does not incur; a Fund’s holding of uninvested cash; differences in the timing of the accrual or the valuation of dividends or interest received by a Fund or distributions paid to Fund shareholders; tax gains or losses; differences between the amount and/or timing of withholding taxes on dividends reflected in the Underlying Index from a Fund’s obligation, if any, for foreign withholding taxes; the requirements for a Fund to maintain pass through tax treatment; portfolio transactions carried out to minimize the distribution of capital gains to shareholders; the acceptance of custom baskets; changes to the Underlying Index, such as during a rebalancing or reconstitution; and impacts to a Fund of complying with certain regulatory requirements or limits. A Fund that tracks an index composed of a large number of securities or other assets may experience greater tracking error than a Fund that tracks a more narrow index. Tracking error risk may be heightened during times of increased market volatility or other unusual market conditions.

Valuation Risk. The price that a Fund could receive upon the sale (or other disposition) of a security or other asset may differ from the Fund’s valuation of the security or other asset, particularly for securities or other assets that trade in low volume or volatile markets or that are valued using a fair value methodology. The price received by a Fund also may differ from the value used by the Underlying Index (if applicable). Because non-U.S. exchanges or markets may be open on days or during time periods when a Fund does not price its shares, the value of the securities or other assets in a Fund’s portfolio may change on days or during time periods when investors are not able to purchase or sell Fund shares.

In addition, for purposes of calculating a Fund’s NAV, the value of assets denominated in non-U.S. currencies (if any) is translated into U.S. dollars at the prevailing market rates. For a Fund that tracks an Underlying Index, this may result in a difference between the prices used to calculate the Fund’s NAV and the prices used by the Underlying Index, which, in turn, could result in a difference between the Fund’s performance and the performance of the Underlying Index. Authorized Participants that create or redeem Fund shares on days when a Fund is holding fair-valued securities or other assets may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received had the securities or other assets not been fair valued or been valued using a different methodology. The ability to value investments may be impacted by technological issues or errors by pricing services or other third-party service providers.

Portfolio Holdings Information

A description of the policies and procedures with respect to the disclosure of the Funds’ portfolio securities and other assets (as applicable) is available in the applicable Statement of Additional Information (“SAI”). Each Fund discloses its portfolio holdings daily at www.iShares.com. Fact sheets providing information about each Fund’s top holdings are posted on www.iShares.com when available and may be requested by calling 1-800-iShares (1-800-474-2737).

Small Fund Risk. When a Fund’s size is small, the Fund may experience low trading volume and wide bid/ask spreads. A Fund’s performance near its inception date may not represent how the Fund will perform in the future or with a larger asset base. A Fund that holds fixed-income securities may buy smaller-sized bonds known as “odd lots,” which may be purchased or sold at a discount to similar “round lot” bonds. The prices used by the Fund may differ from the value that would be realized if these securities were sold, and the impact of such pricing differences on a Fund’s performance may be heightened when the Fund’s size is small. In addition, a Fund may face the risk of being delisted if it does not meet certain requirements set by the listing exchange. If a Fund were required to delist from the listing exchange, the Fund’s value may rapidly decline and its performance may be negatively impacted. Any resulting liquidation of a Fund could lead to elevated transaction costs for the Fund and negative tax consequences for its shareholders.

Subsidiary Risk. In compliance with Subchapter M of the Internal Revenue Code, a Fund may invest up to 25% of its total assets, as determined at the end of the Fund’s fiscal quarters, in a Subsidiary. By investing in a Subsidiary, a Fund is indirectly exposed to the risks associated with the Subsidiary’s investments. For each Fund, the Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in the Prospectus, is not subject to the investor protections of the 1940 Act. The Trust’s Board of Trustees has oversight responsibility for the investment activities of each Fund, including its investment in a Subsidiary, and the Fund’s role as sole shareholder of the Subsidiary. Each Subsidiary follows the same compliance policies and procedures as the Funds. Each Subsidiary’s financial statements are consolidated with the applicable Fund’s financial statements.

Tax Risk. Each Fund invests in commodity-linked derivatives indirectly through the Subsidiary because income from these investments, if made directly, might not be treated as “qualifying income” for purposes of the Fund qualifying as a RIC for U.S. federal income tax purposes. Based on final regulations issued by the IRS on which taxpayers may rely for taxable years beginning after September 28, 2016, each Fund expects its income with respect to the Subsidiary to be qualifying income. In the future, if the IRS issues new regulations or other guidance,

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Management of the Funds

Investment Adviser

As investment adviser, BFA has overall responsibility for the general management and administration of the Funds. BFA provides an investment program for the Funds and manages the investment of the Funds’ assets. In seeking to achieve the Funds’ respective investment objectives, BFA uses teams of portfolio managers, investment strategists and other investment specialists and may draw upon the trading, research and expertise of its affiliates. This team approach brings together many disciplines and leverages BFA’s extensive resources.

Under the Commodity Exchange Act, BFA is considered a commodity pool operator (“CPO”) with respect to each Fund listed below and its Subsidiary. BFA is subject to regulation by the Commodity Futures Trading Commission and the National Futures Association with respect to its activities as a CPO.

iShares Bloomberg Roll Select Commodity Strategy ETF iShares GSCI Commodity Dynamic Roll Strategy ETF iShares Strategic Metals ETF

BFA is a consolidated subsidiary of BlackRock, Inc. (“BlackRock”) and is located at 400 Howard Street, San Francisco, CA 94105. As of December 31, 2025, BFA and its affiliates provided investment advisory services for assets of approximately $14.0 trillion.

Sub-Adviser

Fees and Expenses

Pursuant to the Investment Advisory Agreement between BFA and the Trust (entered into on behalf of the Funds), BFA is responsible for substantially all expenses of each Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, and litigation expenses and any extraordinary expenses (as determined by a majority of the Trustees who are not “interested persons” of the Trust). Operating expenses paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any.

A discussion regarding the basis for the approval by the Trust’s Board of Trustees (the “Board”) of the Investment Advisory Agreement with BFA and, as applicable, the Sub-Advisory Agreement between BFA and BIL is available in the Funds’ Form N-CSR filed with the SEC for the period ended October 31 and in the applicable financial statements and additional information documents posted at www.iShares.com.

For its investment advisory services to each Fund, for the fiscal year ended October 31, 2025, BFA was paid a management fee from each Fund, as a percentage of the Fund’s average daily net assets, net of any applicable waivers, at the annual rate set forth in the table below. If BFA has contractually agreed to waive a portion of its management fees for a Fund, the contractual waiver may be terminated prior to its expiration date only upon written agreement of the Trust and BFA. In addition, BFA may from time to time voluntarily waive and/or reimburse fees or expenses to reduce a Fund’s total annual fund operating expenses (excluding Acquired Fund Fees and Expenses, if any). Any such voluntary waiver or reimbursement may be eliminated by BFA at any time.

BFA also serves as investment adviser to the Subsidiary of each Fund. No fee will be paid to BFA for the advisory services that it provides to the Subsidiary.

Fund Management Fee iShares Bloomberg Roll Select Commodity Strategy ETF 0.27% 1 iShares GSCI Commodity Dynamic Roll Strategy ETF 0.47% 2 iShares Strategic Metals ETF 0.45% 3

1 BFA has contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, attributable to investments by the Fund in other funds advised by BFA, or its affiliates, through February 28, 2031. The contractual waiver may be terminated prior to February 28, 2031 only upon written agreement of the Trust and BFA.

With respect to the iShares Bloomberg Roll Select Commodity Strategy ETF, iShares GSCI Commodity Dynamic Roll Strategy ETF and the iShares Strategic Metals ETF, BFA has entered into a sub-advisory agreement with BIL, an affiliate of BFA. BIL is an SEC-registered investment adviser and a commodity trading advisor located at Dundas House, 20 Brandon Street, Edinburgh, EH3 5PP, United Kingdom. BIL is responsible for the day-to-day management of certain Fund assets, subject to the supervision and oversight of the Trust’s Board of Trustees and BFA. BIL also serves as Sub-Adviser to the Subsidiary. BIL is paid by BFA an amount equal to 60% of BFA’s management fee (net of any applicable expenses).

From time to time, an employee of BlackRock may express views regarding a particular security or other instrument, asset class, company, industry, or market sector. Such views are the views of only that individual as of the time expressed. They do not necessarily represent the views of BlackRock or any other person within the BlackRock organization. Such views may change at any time based upon market or other conditions, and BlackRock has no responsibility to update such views. You should not rely on any such views as investment advice or as an indication of trading intent on behalf of a Fund.

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2 BFA has contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, attributable to investments by the Fund in other registered investment companies advised by BFA, or its affiliates, through February 28, 2029. The contractual waive r may be terminated prior to February 28, 2029 only upon written agreement of the Trust and BFA. 3 BFA has contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, attributable to investments by the Fund in other funds advised by BFA or its affiliates through February 29, 2028. The contractual waiver may be terminated prior to February 29, 2028 only upon written agreement of the Trust and BFA.

Portfolio Managers

The Portfolio Managers for each Fund are responsible for various functions related to portfolio management, including, but not limited to, investing cash inflows, coordinating with members of their respective portfolio management teams to focus on certain asset classes, implementing investment strategy, researching and reviewing investment strategy and overseeing members of their respective teams who have more limited responsibilities.

Erin Armstrong, Richard Mejzak, Orlando Montalvo and Kyle Peppo are primarily responsible for the day-to-day management of the Funds.

Erin Armstrong has been employed by BFA or its affiliates as a senior portfolio manager since 2024 and as a portfolio manager from 2014 through 2023. She is a Director of BlackRock, Inc.

Richard Mejzak has been a portfolio manager for BFA since 2012. He is a Managing Director of BlackRock, Inc.

Orlando Montalvo has been employed by BFA or its affiliates as a senior portfolio manager since 2009. He is a Managing Director of BlackRock, Inc.

Each Fund’s SAI provides additional information about the Portfolio Managers’ compensation, other accounts managed by the Portfolio Managers and the Portfolio Managers’ ownership (if any) of shares of the Funds.

Administrator, Custodian and Transfer Agent

The administrator, custodian and transfer agent for each Fund is indicated in the table below.

Fund

The Bank of New York Mellon Citibank, N.A.

JPMorgan Chase Bank, N.A.

State Street Bank and Trust Company iShares Bloomberg Roll Select Commodity Strategy ETF* iShares GSCI Commodity Dynamic Roll Strategy ETF*

* J P M o r g a n C h a s e B a n k , N . A . s e r v e s a s c u s t o d i a n f o r t h e F u n d i n c o n n e c t i o n w i t h c e r t a i n s e c u r i t i e s l e n d i n g a c t i v i t i e s . Conflicts of Interest

The investment activities of BFA and its affiliates (including BlackRock and its subsidiaries (collectively, the “Affiliates”)), and their respec tive directors, officers or employees, in managing their own accounts and other accounts, may present conflicts of interest that could disadvantage a Fund and its shareholders.

BFA and its Affiliates are involved worldwide with a broad spectrum of financial services and asset management activities and in the ordinary course of business may engage in activities in which their interests or the interests of other clients may conflict with those of a Fund. BFA and its Affiliates act, or may act, as an investor, research provider, investment manager, commodity pool operator, commodity trading advisor, financier, underwriter, adviser, trader, lender, index provider, agent and/or principal. BFA and its Affiliates may have other direct and indirect interests in securities, currencies, commodities, derivatives and other assets in which a Fund may directly or indirectly invest.

BFA and its Affiliates may engage in proprietary trading and advise accounts and other funds that have investment objectives similar to those of a Fund and/or that engage in and compete for transactions in the same or similar types of securities, currencies and other assets as are held by a Fund. This may include transactions in securities issued by other open-end and closed-end investment companies, including investment companies that are affiliated with the Fund and BFA, to the extent permitted under the Investment Company Act of 1940, as amended (the “1940 Act”). The trading activities of BFA and its Affiliates are carried out without reference to positions held directly or indirectly by a Fund. These activities may result in BFA or an Affiliate having positions in assets that are senior or junior to, or that have interests different from or adverse to, the assets held by a Fund.

A Fund may invest in securities issued by, or engage in other transactions with, entities with which an Affiliate has significant debt or equity investments or other interests. A Fund may also invest in issuances (such as debt offerings or structured notes) for which an Affiliate is compensated for providing advisory, cash management or other services. A Fund also may invest in securities of, or engage in other transactions with, entities for which an Affiliate provides or may provide research coverage or other analysis.

An Affiliate may have business relationships with, and receive compensation from, distributors, consultants or others who recommend a Fund or who engage in transactions with or for a Fund.

iShares Strategic Metals ETF*

Kyle Peppo has been employed by BFA or its affiliates as a portfolio manager since 2017. He is a Director of BlackRock, Inc.

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Neither BlackRock nor any Affiliate is under any obligation to share any investment opportunity, idea or strategy with a Fund. As a result, an Affiliate may compete with a Fund for appropriate investment opportunities. The results of a Fund’s investment activities, therefore, may differ from those of an Affiliate and of other accounts managed by an Affiliate. It is possible that a Fund could sustain losses during periods in which one or more Affiliates and other accounts achieve profits on their trading for proprietary or other accounts. The opposite result is also possible.

In addition, a Fund may enter into transactions in which BFA or an Affiliate or their directors, officers, employees or clients have an adverse interest. A Fund may be adversely impacted by the effects of transactions undertaken by BFA or an Affiliate or their directors, officers, employees or clients.

From time to time, BlackRock or its advisory clients (including other funds and accounts) may, subject to compliance with applicable law, purchase and hold shares of a Fund. The price, availability, liquidity, and (in some cases) expense ratio of a Fund may be impacted by purchases and sales of the Fund by BlackRock or its advisory clients.

A Fund’s activities may be limited because of regulatory restrictions applicable to BFA or an Affiliate or their policies designed to comply with such restrictions.

Under a securities lending program approved by the Board, the Funds have retained BTC, an Affiliate of BFA, to serve as their securities lending agent to the extent that they participate in the securities lending program. For these services, the securities lending agent will receive a fee from the participating Fund based on the returns earned on the Fund’s lending activities, including investment of the cash received as collateral for the loaned securities. In addition, one or more Affiliates may be among the entities to which a Fund may lend its portfolio securities under the securities lending program.

Under an ETF Services Agreement, certain Funds have retained BlackRock Investments, LLC (the “Distributor” or “BRIL”), an Affiliate of BFA, to perform certain order processing, Authorized Participant communications, and related services in connection with the issuance and redemption of Creation Units (“ETF Services”). BRIL has engaged Citibank, N.A. (“Citibank”) as a subcontractor to provide certain ETF Services. BRIL retains a portion of the standard transaction fee received from Authorized Participants on each creation or redemption order from the Authorized Participant for the ETF Services provided. BlackRock collaborated with, and received payment from, Citibank on the design and development of the ETF Services platform. Citibank has, and from time to time may develop, additional relationships with BlackRock or funds managed by BFA and its Affiliates.

BlackRock and its Affiliates may benefit from a Fund using a BlackRock index by creating increasing acceptance in the marketplace for such indexes. BlackRock and its Affiliates are not obligated to license an index to a Fund, and no Fund is under an obligation to use a BlackRock index. The terms of a Fund’s index licensing agreement with BlackRock or its Affiliates may not be as favorable as the terms offered to other licensees.

The activities of BFA and its Affiliates and their respective directors, officers or employees may give rise to other conflicts of interest that could disadvantage a Fund and its shareholders. BFA has adopted policies and procedures designed to address these potential conflicts of interest. Please see the SAI for further information.

Shareholder Information

Additional shareholder information, including how to buy and sell shares of the Funds, is available free of charge by calling toll-free 1-800-iShares (1-800-474-2737) or visiting www.iShares.com.

Buying and Selling Shares

Transactions in shares of the Funds occur in the primary market and the secondary market. Primary market transactions, known as “creations” and “redemptions,” occur only between the Funds and Authorized Participants ( i.e ., financial institutions that are authorized to participate in such transactions), as described in the Creations and Redemptions section below.

Fund shares are listed on U.S. national securities exchanges, where they can be bought and sold throughout the trading day at market prices, like shares of other publicly traded companies. A Fund’s shares may also be available in other secondary markets, such as on non-U.S. exchanges and through funds or structured investment vehicles similar to depositary receipts. The Funds do not impose any minimum investment for Fund shares purchased on an exchange or otherwise in the secondary market.

Buying or selling Fund shares on an exchange or other secondary market generally involves two types of costs that are common in securities transactions. First, when buying or selling Fund shares through a broker, you may incur a brokerage commission and other charges. The commission is frequently a fixed amount; it may be a significant proportional cost if you are seeking to buy or sell small amounts of shares. Second, you may incur the cost of the “spread,” which is any difference between the bid price and the ask price for the shares. The spread varies over time based on a Fund’s trading volume and market liquidity. Generally, the spread is smaller if a Fund has high trading volume and market liquidity, and larger if a Fund has lower trading volume and market liquidity. The latter is often the case for newly launched or smaller funds. A Fund’s spread may also be impacted by the liquidity (or lack thereof) of the underlying securities or other assets held by the Fund, particularly for newly launched or smaller funds, or by instances of significant volatility of the underlying assets.

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The U.S. national securities exchanges that list Fund shares are open for trading Monday through Friday and are closed on weekends and the following holidays (or the days on which they are observed): New Year’s Day, Martin Luther King Jr. Day, Presidents’ Day, Good Friday, Memorial Day, Juneteenth, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.

Investments in Investment Companies

Section 12(d)(1) of the 1940 Act generally restricts investments by investment companies, including foreign and unregistered investment companies, in the securities of other investment companies. For example, a registered investment company (the “Acquired Fund”), such as the Funds, may not knowingly sell or otherwise dispose of any security issued by the Acquired Fund to any investment company (the “Acquiring Fund”) or any company or companies controlled by the Acquiring Fund if, immediately after such sale or disposition: (i) more than 3% of the total outstanding voting stock of the Acquired Fund is owned by the Acquiring Fund and any company or companies controlled by the Acquiring Fund, or (ii) more than 10% of the total outstanding voting stock of the Acquired Fund is owned by the Acquiring Fund and other investment companies and companies controlled by them.

Notwithstanding the foregoing, registered investment companies are permitted to invest in a Fund beyond the limits set forth in Section 12(d)(1), subject to certain terms and conditions set forth in Rule 12d1-4 under the 1940 Act. To make such an investment in an Acquired Fund, a registered investment company must, among other things, enter into an agreement with the Trust. If an Acquired Fund invests significantly in other registered investment companies in reliance on Rule 12d1-4, an Acquiring Fund will not be permitted to rely on Rule 12d1-4 and invest in the Fund beyond the Section 12(d)(1) limits. Any investment company interested in purchasing shares of a Fund beyond the limits set forth in Section 12(d)(1) should contact BFA.

Foreign investment companies are permitted to invest in a Fund only up to the limits set forth in Section 12(d)(1), subject to any applicable SEC no-action relief.

Book Entry

Shares of the Funds are held in book-entry form, which means that no stock certificates are issued. The Depository Trust Company (“DTC”), which serves as the securities depository for shares of the Funds, or its nominee is the record owner of, and holds legal title to, all outstanding shares of the Funds.

Investors owning Fund shares are beneficial owners as shown on the records of DTC or its participants. DTC participants include securities brokers and dealers, banks, trust companies, clearing corporations and other institutions that directly or indirectly maintain a custodial relationship with DTC. As a beneficial owner of Fund shares, you are not entitled to receive physical delivery of stock certificates or to have shares registered in your name, and you are not considered a registered owner of shares. Therefore, to exercise any right as an owner of Fund shares, you must rely upon the procedures of DTC and its participants. These procedures are the same as those that apply to any other securities held in book-entry or “street name” form.

Share Prices

The trading prices of a Fund’s shares in the secondary market generally differ from the Fund’s daily NAV and are affected by various factors, such as the supply of and demand for ETF shares and the securities or other assets held by a Fund as well as other market and economic conditions.

Determination of Net Asset Value

The NAV of a Fund normally is determined once daily Monday through Friday, on each day that the New York Stock Exchange (“NYSE”) is open for trading. The NAV generally is determined as of the close of the NYSE’s regular trading hours, normally 4:00 p.m. Eastern time, based on prices at the time of closing.

Any Fund assets or liabilities that are denominated in currencies other than the U.S. dollar are translated into U.S. dollars at the prevailing market rates on the date of valuation as quoted by one or more data service providers.

The NAV of a Fund is calculated by dividing the value of the Fund’s net assets ( i.e ., the value of its total assets, including the value of any underlying fund shares in which the Fund invests, less total liabilities) by the total number of outstanding shares of the Fund, generally rounded to the nearest cent. The value of a Fund’s assets and liabilities is determined pursuant to BFA’s valuation policies and procedures. BFA has been designated by the Board as the valuation designee for each Fund pursuant to Rule 2a-5 under the Investment Company Act.

Equity securities and other equity instruments (except ETF options, equity index options or those that are customized) for which market quotations are readily available are valued at market value, which is generally determined using the last reported official closing price or, if a reported closing price is not available, the last traded price on the exchange or market on which the security or instrument is primarily traded at the time of valuation. Shares of underlying open-end funds (including money market funds) that are not traded on an exchange are valued at net asset value. Shares of underlying ETFs and closed-end funds that trade on exchanges are valued at their most recent market closing price.

Fixed-income securities and certain derivative instruments are valued using last available bid prices or current market quotations provided by dealers or prices (including evaluated prices) supplied by the Funds’ approved independent third-party pricing services, each in accordance with BFA’s valuation policies and procedures. Pricing services may use matrix pricing or valuation models that utilize certain inputs and

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assumptions to derive values. Pricing services generally value fixed-income securities assuming orderly transactions of an institutional round lot size, but a Fund may hold or transact in such securities in smaller odd lot sizes. Odd lots of securities in certain asset classes may trade at lower prices than institutional round lots, and the value ultimately realized when the securities are sold could differ from the prices used by a Fund. The amortized cost method of valuation may be used with respect to debt obligations with 60 days or less remaining to maturity unless BFA determines in good faith that such method does not represent fair value.

Generally, trading in certain instruments ( e.g ., non-U.S. securities, money market instruments, etc.) is substantially completed each day at various times prior to the close of the NYSE’s regular trading hours. The values of such instruments used in computing a Fund’s NAV are determined as of such times.

For certain foreign assets, a third-party vendor supplies evaluated, systematic fair value pricing based upon the movement of a proprietary multi-factor model after the relevant foreign markets have closed. This systematic fair value pricing methodology is designed to correlate the prices of foreign assets in one or more non-U.S. markets following the close of the local markets to the prices that might have prevailed as of a Fund’s pricing time.

Customized exchange-traded equity options, ETF options, equity index options and other derivatives may be valued using a mathematical model that may incorporate a number of market data factors.

When market quotations are not readily available or are believed by BFA to be unreliable, BFA will fair value a Fund’s investments in accordance with its policies and procedures. Fair value represents a good faith approximation of the value of an asset or liability. It is the amount that the Fund might reasonably expect to receive from the current sale of an asset or the cost to extinguish a liability in an arm’s length transaction.

BFA may conclude that a market quotation is not readily available or is unreliable if: An asset or liability does not have a price source due to its lack of trading or other reasons; A market quotation differs significantly from recent price quotations or otherwise no longer appears to reflect fair value; An asset or liability is thinly traded; There is a significant event subsequent to the most recent market quotation; or The trading market on which an instrument is listed is suspended or closed and no appropriate alternative trading market is available.

A “significant event” is deemed to occur if BFA determines, in its reasonable business judgment prior to or at the time of pricing a Fund’s assets or liabilities, that the event is likely to cause a material change to the last exchange closing price or closing market price of one or more of the Fund’s assets or liabilities.

Valuing a Fund’s investments using fair value pricing may result in prices that differ from current market valuations and that may not be the prices at which those investments could have been sold during the period for which the particular fair values were used. For an index Fund, the use of both fair value prices and current market valuations in a particular NAV calculation could result in a difference between the prices used to calculate a Fund’s NAV and the prices used by the Fund’s underlying index. This could, in turn, result in a difference between the Fund’s performance and the performance of its underlying index.

Dividends and Distributions

General Policies. A Fund generally declares and pays dividends from net investment income, if any, at least once a year. Distributions of net realized securities gains, if any, generally are declared and paid once a year, but the Trust may make distributions on a more frequent basis for a Fund. The Trust reserves the right to declare special distributions if, in its reasonable discretion, such action is necessary or advisable to preserve its status as a regulated investment company (“RIC”) or to avoid the imposition of income or excise taxes on undistributed income or realized gains.

Dividends and other distributions on Fund shares are distributed on a pro rata basis to beneficial owners of the shares. Dividend payments and other distributions are made through DTC participants and indirect participants to beneficial owners then of record with proceeds received from the Funds.

Dividend Reinvestment Service. No dividend reinvestment service is provided by the Trust. Broker-dealers may make the DTC book-entry Dividend Reinvestment Program available to beneficial owners of Fund shares for the reinvestment of distributions. Beneficial owners should contact their broker to determine the availability and costs of the service and the details of participation. Brokers may require beneficial owners to adhere to specific procedures and timetables. If the program is used, dividend distributions of both income and realized gains will be automatically reinvested in additional whole Fund shares purchased in the secondary market.

Note on Tax Information. The following sections summarize some of the consequences under current U.S. federal tax law of an investment in a Fund. This information is not a substitute for personal tax advice. You may also be subject to state and local taxation on Fund distributions and sales of Fund shares. Distributions that are attributable to interest from U.S. federal government obligations may be exempt from certain state and local tax. Consult your personal tax advisor about the potential tax consequences of an investment in Fund shares under all applicable tax laws.

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Taxes

As with any investment, you should consider how your investment in shares of a Fund will be taxed, including possible tax consequences when a Fund makes distributions or when you sell Fund shares. The tax information in this Prospectus is provided as general information, based on current law. You should consult your own tax professional about the tax consequences of an investment in shares of a Fund. There is no guarantee that shares of a Fund will receive certain regulatory or accounting treatment.

Taxes on Fund Distributions

Shareholders in a Fund will receive information after the end of each calendar year setting forth the amount of dividends and long-term capital gains distributed to them by the Fund during the prior year, if any. Likewise, the amount of tax-exempt income, if any, that a Fund distributes will be reported. Such income must be reported on the shareholder’s U.S. federal income tax return.

In general, distributions are subject to U.S. federal income tax for the year when they are paid. Certain distributions paid in January, however, may be treated as paid on December 31 of the prior year.

Capital Gains. Distributions from a Fund’s net investment income (other than qualified dividend income or from net tax-exempt income, if any), including distributions of income from securities lending and distributions out of a Fund’s net short-term capital gains, if any, are taxable to you as ordinary income. Distributions by a Fund of net long-term capital gains, if any, in excess of net short-term capital losses (capital gain dividends) are taxable to you as long-term capital gains, regardless of how long you have held the Fund’s shares. Long-term capital gains and qualified dividend income are generally eligible for taxation at preferential rates for non-corporate shareholders. However, different preferential rates may apply depending on the type of capital gains, such as Fund distributions of certain amounts received from real estate investment trusts (“REITs”), if any.

Return of Capital. If a Fund’s distributions exceed current and accumulated earnings and profits, all or a portion of the distributions made in the taxable year may be recharacterized as a return of capital to shareholders. A return of capital distribution generally will not be taxable but will reduce the shareholder’s cost basis and result in a higher capital gain or lower capital loss when those shares on which the distribution was received are sold. Once a shareholder’s cost basis is reduced to zero, further distributions will be treated as capital gains, if the shareholder holds shares of the Fund as capital assets. Distributions in excess of a Fund’s minimum distribution requirements, but not in excess of the Fund’s earnings and profits, will be taxable to shareholders and will not constitute nontaxable returns of capital.

Qualified Dividend Income. Distributions by a Fund that qualify as qualified dividend income, if any, are taxable to you at long-term capital gain rates. Dividends will be qualified dividend income to you if they are attributable to qualified dividend income received by a Fund. Generally, qualified dividend income includes dividend income from stock issued by taxable U.S. corporations and qualified non-U.S. corporations, provided that the Fund satisfies certain holding period requirements and has not hedged its position in the stock in certain ways. For this purpose, a qualified non-U.S. corporation means any non-U.S. corporation that is eligible for benefits under a comprehensive income tax treaty with the U.S., which includes an exchange of information program, or if the stock with respect to which the dividend was paid is readily tradable on an established U.S. securities market. The term excludes a corporation that is a passive foreign investment company.

Dividends received by a Fund from a RIC, if any, generally are qualified dividend income only to the extent that such dividend distributions are made out of qualified dividend income received by such RIC. Additionally, it is expected that dividends received by a Fund from a REIT, if any, and distributed to a shareholder generally will be taxable to the shareholder as ordinary income. However, a Fund may report dividends eligible for a 20% “qualified business income” deduction for non-corporate U.S. shareholders to the extent that the Fund’s income is derived from ordinary REIT dividends, reduced by allocable Fund expenses.

For a dividend to be treated as qualified dividend income, the dividend must be received with respect to a share of stock held without being hedged by the relevant Fund, and with respect to a share of the Fund held without being hedged by you, for 61 days during the 121-day period beginning at the date that is 60 days before the date on which such share becomes ex-dividend with respect to such dividend or, in the case of certain preferred stock, 91 days during the 181-day period beginning 90 days before such date.

Fund distributions, to the extent attributable to dividends from U.S. corporations, will be eligible for the dividends received deduction for Fund shareholders that are corporations, subject to certain hedging and holding requirements.

Substitute dividends received by a Fund with respect to dividends paid on securities lent out, if any, will not be qualified dividend income.

Medicare Tax. A 3.8% U.S. federal Medicare contribution tax is imposed on “net investment income,” including, but not limited to, interest, dividends, and net gain, of U.S. individuals with income exceeding $200,000 (or $250,000 if married and filing jointly) and of estates and trusts.

Alternative Minimum Tax. The AMT is a separate U.S. federal tax system that operates in parallel to the regular federal income tax system but eliminates many deductions and exclusions. The AMT has different tax rates and treats as taxable certain types of income that are nontaxable for regular income tax purposes, such as the interest on certain “private activity” municipal bonds. If a taxpayer’s overall AMT liability is higher than regular income tax liability, then the taxpayer owes the regular income tax liability plus the difference between the AMT liability and the regular income tax liability.

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Original Issue Discount and Inflation-Related Adjustments

Accruals of “original issue discount” on bonds that a Fund acquires at a discount and adjustments for inflation to the principal amount of an inflation-protected U.S. Treasury bond held by a Fund may be included for tax purposes in the Fund’s gross income, even though no cash attributable to such gross income has at that point been received by the Fund. In such event, the Fund may be required to make annual distributions to shareholders that exceed the cash it has otherwise received. In order to pay such distributions, the Fund may be required to raise cash by selling portfolio investments. The sale of such investments could result in capital gains to the Fund and additional capital gains distributions to Fund shareholders. In addition, any deflation-related adjustments during the taxable year to an inflation-indexed bond held by a Fund may cause amounts distributed in the taxable year as income to be characterized as a return of capital.

Market Discount Bonds

Any market discount recognized on a bond, including a tax-exempt interest bond, is taxable as ordinary income. A market discount bond is a bond acquired in the secondary market at a price below redemption value or adjusted issue price if issued with original issue discount. To the extent that a Fund does not include the market discount in income as it accrues, gains on the Fund’s disposition of such an obligation will be treated as ordinary income rather than capital gains to the extent of the accrued market discount.

Derivatives and Other Complex Instruments

A Fund may invest in derivatives and other complex instruments, and such investments may be subject to special and complicated rules. These rules could affect whether gains and losses recognized by a Fund are treated as ordinary income or capital gains, accelerate the recognition of income to a Fund or defer a Fund’s ability to recognize losses. In addition, these rules may affect the amount, timing or character of income distributed to you by a Fund. You should consult your personal tax advisor regarding the application of these rules.

Non-U.S. Income Taxes

Dividends, interest and capital gains (if any) earned by a Fund with respect to securities issued by non-U.S. issuers may give rise to withholding, capital gains and other taxes imposed by non-U.S. countries. Tax conventions between certain countries and the U.S. may reduce or eliminate such taxes. If, at the close of a year, more than 50% of a Fund’s total assets consist of non-U.S. stocks or securities (generally, for this purpose, depositary receipts, no matter where traded, of non-U.S. companies are treated as “non-U.S.”), generally the Fund may “pass through” to you certain non-U.S. income taxes, including withholding taxes, paid by the Fund. This means that you would be considered to have received as an additional dividend your share of such non-U.S. taxes, but you may be entitled to either a corresponding tax deduction in calculating your taxable income or, subject to certain limitations, a credit in calculating your U.S. federal income tax. No deduction for such taxes will be permitted to individuals in computing their alternative minimum tax liability. If a Fund does not pass through non-U.S. taxes, the Fund will be entitled to claim a deduction for certain foreign taxes that it incurs.

Under certain circumstances, if a Fund receives a refund of foreign taxes paid with respect to a prior year, the value of Fund shares could be affected or any foreign tax credits or deductions passed through to shareholders with respect to the Fund’s foreign taxes for the current year could be reduced.

If, at the close of the year, more than 50% of a Fund’s total assets consist of stocks or securities issued by non-U.S. issuers, including depositary receipts (no matter where traded) of non-U.S. companies, or, at the close of each quarter, more than 50% of a Fund’s total assets consist of shares of an Underlying Fund, the Fund may “pass-through” to you certain non-U.S. income taxes (including withholding taxes) paid by the Fund or, if its assets meet these requirements, the Underlying Fund.

For purposes of foreign tax credits for U.S. shareholders of a Fund, foreign capital gains taxes may not produce associated foreign source income, limiting the availability of such credits for U.S. persons.

Non-U.S. Shareholders

If you are neither a resident nor a citizen of the U.S. or if you are a non-U.S. entity (other than a pass-through entity to the extent owned by U.S. persons), a Fund’s ordinary income dividends, if any, generally will be subject to a 30% U.S. federal withholding tax, unless a lower treaty rate applies. However, withholding tax generally will not apply to any gain or income realized by a non-U.S. shareholder upon the sale or other disposition of Fund shares or with respect to certain distributions paid to a non-U.S. shareholder and reported by a Fund as capital gain dividends, interest-related dividends or short-term capital gain dividends.

Separately, a 30% withholding tax may be imposed on Fund distributions (if any) paid to certain foreign entities, unless such entities comply, or are deemed compliant, with extensive reporting and withholding requirements designed to inform the U.S. Department of the Treasury of U.S.-owned foreign investment accounts.

Backup Withholding

If you are a resident or a citizen of the U.S. and you have not provided a taxpayer identification number or social security number and made other required certifications, by law, backup withholding at a 24% rate will apply to Fund distributions and proceeds (if any).

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Securities Lending

If your shares of a Fund are loaned out pursuant to a securities lending arrangement, you may lose the ability to treat Fund dividends that are paid while the shares are held by the borrower as qualified dividend income, and you may lose the ability to use non-U.S. tax credits passed through by the Fund.

Fund of Funds

If a Fund invests in an Underlying Fund, short-term capital gains earned by the Underlying Fund, if any, will be ordinary income when distributed to the Fund and will not be offset by the Fund’s capital losses. To the extent such Fund is expected to invest in an Underlying Fund, the Fund’s realized losses on sales of shares of the Underlying Fund may be indefinitely or permanently deferred as “wash sales.” Capital loss carryforwards of the Underlying Fund, if any, will not offset net capital gains of the Fund.

Taxes on the Sale of Exchange-Listed Fund Shares

Any capital gain or loss realized upon a sale of Fund shares is generally treated as a long-term capital gain or loss if the shares have been held for more than one year. Any capital gain or loss realized upon a sale of Fund shares that have been held for one year or less is generally treated as a short-term capital gain or loss. However, any capital loss on a sale of Fund shares held for six months or less is treated as a long-term capital loss to the extent that capital gain dividends were paid with respect to such shares. Any such capital gains, including from sales of Fund shares or from capital gain dividends, are included in “net investment income” for purposes of the 3.8% U.S. federal Medicare contribution tax mentioned above.

Creations and Redemptions

Prior to being traded in the secondary market, Fund shares are “created” at NAV by Authorized Participants ( i.e. , market makers, large investors and other financial institutions) in block-size Creation Units or multiples thereof. Fund shares are created or redeemed only in Creation Units, and only Authorized Participants may create or redeem Creation Units with the Funds.

Each Authorized Participant is a member or participant of a clearing agency registered with the SEC and has entered into a written agreement with the Funds’ Distributor, an affiliate of BFA. The agreement allows the Authorized Participant to place orders for the purchase and redemption of Creation Units. Authorized Participants may create or redeem Creation Units for their own accounts or for customers, including, without limitation, affiliates of the Funds. Creation transactions are subject to acceptance by the Distributor and the relevant Fund.

Generally, there are three transaction methods for creating and redeeming Fund shares: in-kind securities (“in-kind”), partial cash and all cash.

In-Kind . In a creation transaction, an Authorized Participant deposits into a Fund a “creation basket,” which is a portfolio of securities or other assets designated by the Fund, as well as a cash amount. The Authorized Participant receives a specified number of Creation Units in return. In a redemption transaction, an Authorized Participant deposits Creation Units with a Fund and receives from the Fund a “redemption basket,” which is a portfolio of securities or other assets designated by the Fund, as well as a cash amount.

Partial Cash . In a creation transaction, an Authorized Participant deposits into a Fund a creation basket and a cash amount, including cash that replaces a security or other asset in the creation basket, in exchange for Creation Units. In a redemption transaction, an Authorized Participant deposits Creation Units with a Fund and receives from the Fund a redemption basket and a cash amount, including cash that replaces a security or other asset in the redemption basket.

All Cash . In a creation transaction, an Authorized Participant deposits into a Fund an amount of cash specified by the Fund in exchange for Creation Units. In a redemption transaction, an Authorized Participant deposits Creation Units with a Fund and receives from the Fund a specified amount of cash.

The creation and redemption baskets for a Fund may differ in composition, and certain iShares ETFs accept “custom baskets.” More information about custom baskets is provided in the Funds’ SAI.

Each Fund generally engages in creation and redemption transactions according to the method indicated in the table below. In certain circumstances, however, a Fund may use another transaction method ( e.g. , an in-kind Fund may transact partially or fully in cash).

Fund In-Kind Partial All Cash iShares Bloomberg Roll Select Commodity Strategy ETF iShares GSCI Commodity Dynamic Roll Strategy ETF iShares Strategic Metals ETF

The prices at which creations and redemptions occur are based on the next calculation of a Fund’s NAV after a creation or redemption order is tendered in an acceptable form under the Authorized Participant agreement. In the event of a system failure or other interruption, including disruptions at market makers or Authorized Participants, creation and redemption orders may not be executed according to a Fund’s instructions or may not be executed at all.

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Additional information about the creation and redemption of Creation Units (including the cut-off times for the receipt of creation and redemption orders) is included in the Funds’ SAI.

The Funds do not impose restrictions on the frequency of purchases and redemptions of Fund shares directly with a Fund. The Board determined not to adopt policies and procedures designed to prevent or monitor for frequent purchases and redemptions of Fund shares because each Fund generally sells and redeems its shares directly through transactions that are in-kind and/or for cash, with a deadline for placing cash-related transactions no later than the close of the primary markets for the Fund’s portfolio securities. However, the Funds have taken certain measures ( e.g. , imposing transaction fees on purchases and redemptions of Creation Units and reserving the right to reject purchases of Creation Units under certain circumstances) to minimize the potential consequences of frequent cash purchases and redemptions by Authorized Participants, such as increased tracking error, disruption of portfolio management, dilution to the Funds, and/or increased transaction costs. Further, the vast majority of trading in Fund shares occurs on the secondary market, which does not involve the Funds directly, and such trading is unlikely to cause many of the harmful effects of frequent cash purchases or redemptions of Fund shares.

To the extent a Fund engages in in-kind transactions, the Fund intends to comply with the U.S. federal securities laws in accepting securities for deposit and satisfying redemptions with redemption securities by, among other means, assuring that any securities accepted for deposit and any securities used to satisfy redemption requests will be sold in transactions that would be exempt from registration under the 1933 Act. Further, an Authorized Participant that is not a “qualified institutional buyer,” as such term is defined in Rule 144A under the 1933 Act, will not be able to receive restricted securities eligible for resale under Rule 144A.

Because Fund shares may be created and issued on an ongoing basis, at any point during the life of a Fund a “distribution,” as such term is used in the 1933 Act, may be occurring. Broker-dealers and other persons are cautioned that some activities on their part may, depending on the circumstances, result in their being deemed participants in a distribution in a manner that could render them statutory underwriters subject to the prospectus delivery and liability provisions of the 1933 Act. Any determination of whether one is an underwriter must take into account all the relevant facts and circumstances of each particular case.

Broker-dealers should also note that dealers who are not “underwriters” but are participating in a distribution (as contrasted to ordinary secondary transactions), and thus dealing with shares that are part of an “unsold allotment” within the meaning of Section 4(a)(3)(C) of the 1933 Act, would be unable to take advantage of the prospectus delivery exemption provided by Section 4(a)(3) of the 1933 Act. For delivery of prospectuses to exchange members, the prospectus delivery mechanism of Rule 153 under the 1933 Act is available only with respect to transactions on a national securities exchange.

Householding

Householding is an option available to certain Fund investors. Householding is a method of delivery, based on the preference of the individual investor, in which a single copy of certain shareholder documents can be delivered to investors who share the same address, even if their accounts are registered under different names. Please contact your broker-dealer if you are interested in enrolling in householding and receiving a single copy of prospectuses and other shareholder documents, or if you are currently enrolled in householding and wish to change your householding status.

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Distribution

The Distributor or its agent distributes Creation Units for the Funds on an agency basis. The Distributor does not maintain a secondary market in shares of the Funds. The Distributor has no role in determining the policies of the Funds or the securities or other assets (as applicable) that are purchased or sold by the Funds. The Distributor’s principal address is 50 Hudson Yards, New York, NY 10001.

BFA or its affiliates make payments to broker-dealers, registered investment advisers, banks or other intermediaries (together, “intermediaries”) related to marketing activities and presentations, educational training programs, conferences, the development of technology platforms and reporting systems, data provision services, or their making shares of the Funds available to their customers generally and in certain investment programs. Such payments, which may be significant to the intermediary, are not made by the Funds. Rather, such payments are made by BFA or its affiliates from their own resources, which come directly or indirectly in part from fees paid by the Funds. Payments of this type are sometimes referred to as revenue-sharing payments. A financial intermediary may make decisions about which investment options it recommends or makes available, or the level of services provided, to its customers based on the payments or other financial incentives the intermediary is eligible to receive. Therefore, such payments or other financial incentives that are offered or made to an intermediary create conflicts of interest between the intermediary and its customers and may cause the intermediary to recommend the Funds over another investment. More information regarding these payments is contained in the applicable SAI. Please contact your salesperson or other investment professional for more information regarding any such payments that their firm may receive from BFA or its affiliates.

Financial Highlights

The financial highlights table for each Fund is intended to help you understand the Fund’s financial performance for the past five fiscal years or, if shorter, the period since the Fund’s inception. Certain information reflects financial results for a single Fund share. The total return information represents the rate that an investor would have earned (or lost) on an investment in the Fund, assuming reinvestment of all dividends and distributions. This information has been audited by PricewaterhouseCoopers LLP, whose report, along with each Fund’s financial statements, is included in each Fund’s Form N-CSR (available upon request).

Page 58

Consolidated Financial Highlights

For a share outstanding throughout each period:

iShares Bloomberg Roll Select Commodity Strategy ETF Year Ended 10/31/25 Year Ended 10/31/24 Year Ended 10/31/23 Year Ended 10/31/22 Year Ended 10/31/21 Net asset value, beginning of year $ 49.15 $ 51.56 $ 56.23 $ 59.67 $ 41.91 Net investment income (loss) (a) 2.08 2.47 2.39 0.53 (0.09) Net realized and unrealized gain (loss) (b) 4.60 (2.48) (4.89) 3.99 17.92 Net increase (decrease) from investment operations 6.68 (0.01) (2.50) 4.52 17.83 Distributions from net investment income (c) (2.01) (2.40) (2.17) (7.96) (0.07) Net asset value, end of year $ 53.82 $ 49.15 $ 51.56 $ 56.23 $ 59.67 Total Return (d) Based on net asset value 14.20% 0.17% (4.72)% 9.78% 42.59% Ratios to Average Net Assets (e) Total expenses 0.28% 0.28% 0.28% 0.28% 0.28% Total expenses after fees waived 0.27% 0.28% 0.27% 0.27% 0.27% Net investment income (loss) 4.13% 5.07% 4.57% 0.91% (0.16)% Supplemental Data Net assets, end of year (000) $295,999 $282,621 $291,312 $314,890 $208,844 Portfolio turnover rate (f) 0% 0% 0% 0% 0% (a) Based on average shares outstanding. (b) The amounts reported for a share outstanding may not accord with the change in aggregate gains and losses in securities for the fiscal period due to the t iming of capital share transactions in relation to the fluctuating market values of the Fund’s underlying securities. (c) Distributions for annual periods determined in accordance with U.S. federal income tax regulations. (d) Where applicable, assumes the reinvestment of distributions. (e) Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. (f) Portfolio turnover rate excludes in-kind transactions, if any.

Consolidated Financial Highlights

For a share outstanding throughout each period:

iShares GSCI Commodity Dynamic Roll Strategy ETF Year Ended 10/31/25 Year Ended 10/31/24 Year Ended 10/31/23 Year Ended 10/31/22 Year Ended 10/31/21 Net asset value, beginning of year $ 26.02 $ 28.12 $ 37.93 $ 37.41 $ 24.27 Net investment income (loss) (a) 1.05 1.33 1.33 0.21 (0.13) Net realized and unrealized gain (loss) (b) 1.12 (2.13) (2.74) 5.80 13.37 Net increase (decrease) from investment operations 2.17 (0.80) (1.41) 6.01 13.24 Distributions from net investment income (c) (1.24) (1.30) (8.40) (5.49) (0.10) Net asset value, end of year $ 26.95 $ 26.02 $ 28.12 $ 37.93 $ 37.41 Total Return (d) Based on net asset value 8.74% (2.74)% (3.47)% 19.92% 54.75% Ratios to Average Net Assets (e) Total expenses 0.48% 0.48% 0.48% 0.48% 0.48% Total expenses after fees waived 0.47% 0.47% 0.44% 0.48% 0.48% Net investment income (loss) 4.03% 5.02% 4.51% 0.54% (0.38)% Supplemental Data Net assets, end of year (000) $619,882 $858,649 $801,325 $2,359,148 $2,824,785 Portfolio turnover rate (f) 0% 0% 0% 0% 0% (a) Based on average shares outstanding. (b) The amounts reported for a share outstanding may not accord with the change in aggregate gains and losses in securities for the fiscal period due to the t iming of capital share transactions in relation to the fluctuating market values of the Fund’s underlying securities. (c) Distributions for annual periods determined in accordance with U.S. federal income tax regulations. (d) Where applicable, assumes the reinvestment of distributions. (e) Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. (f) Portfolio turnover rate excludes in-kind transactions, if any.

Page 59

Consolidated Financial Highlights

For a share outstanding throughout each period:

iShares Strategic Metals ETF Year Ended 10/31/25 Year Ended 10/31/24

Period From 09/26/23 (a) to 10/31/23 Net asset value, beginning of period $ 29.43 $ 24.92 $ 25.00 Net investment income (b) 0.99 1.35 0.11 Net realized and unrealized gain (loss) (c) 3.89 3.42 (0.19) Net increase (decrease) from investment operations 4.88 4.77 (0.08) Distributions from net investment income (d) (6.34) (0.26) — Net asset value, end of period $ 27.97 $ 29.43 $ 24.92 Total Return (e) Based on net asset value 22.53% 19.36% (0.34)% (f) Ratios to Average Net Assets (g) Total expenses 0.47% 0.48% 0.47% (h) Total expenses after fees waived 0.45% 0.46% 0.44% (h) Net investment income 4.01% 4.98% 4.38% (h) Supplemental Data Net assets, end of period (000) $11,188 $11,774 $12,458 Portfolio turnover rate (i) 0% 0% 0% (a) Commencement of operations. (b) Based on average shares outstanding. (c) The amounts reported for a share outstanding may not accord with the change in aggregate gains and losses in securities for the fiscal period due to the t iming of capital share transactions in relation to the fluctuating market values of the Fund’s underlying securities. (d) Distributions for annual periods determined in accordance with U.S. federal income tax regulations. (e) Where applicable, assumes the reinvestment of distributions. (f) Not annualized. (g) Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. (h) Annualized. (i) Portfolio turnover rate excludes in-kind transactions, if any.

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Index Providers and Disclaimers

The Index Providers are not affiliated with the Trust, BFA, the Sub-Adviser, the Distributor or any of their respective affiliates. BFA or its affiliates have entered into a license agreement with the Index Providers to use the respective Underlying Indexes. BFA or its affiliates sublicense rights in each Underlying Index for use by the applicable Fund at no charge.

The past performance of an Underlying Index is not a guide to future performance. BFA and its affiliates do not guarantee the accuracy or the completeness of an Underlying Index or any data included therein, and BFA and its affiliates shall have no liability for any errors, omissions or interruptions therein. BFA and its affiliates make no warranty, express or implied, to the owners of shares of a Fund or to any other person or entity, as to results to be obtained by a Fund from the use of an Underlying Index or any data included therein. Without limiting any of the foregoing, in no event shall BFA or its affiliates have any liability for any special, punitive, direct, indirect, consequential or any other damages (including lost profits), even if notified of the possibility of such damages.

Bloomberg

The following applies with respect to each Underlying Index provided by Bloomberg:

The Underlying Index is maintained by Bloomberg. “Bloomberg ® ” and the Underlying Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (“BISL”), the administrator of the index (collectively, “Bloomberg”), and have been licensed for use for certain purposes by BFA.

The Fund is not sponsored, endorsed, sold or promoted by Bloomberg. Bloomberg does not make any representation or warranty, express or implied, to the owners of or counterparties to the Fund or any member of the public regarding the advisability of investing in securities generally or in the Fund particularly. The only relationship of Bloomberg to BFA is the licensing of certain trademarks, trade names and service marks and of the Underlying Index, which is determined, composed and calculated by BISL without regard to BFA or the Fund. Bloomberg has no obligation to take the needs of BFA or the owners of the Fund into consideration in determining, composing or calculating the Underlying Index. Bloomberg is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the Fund to be issued. Bloomberg shall not have any obligation or liability, including, without limitation, to the Fund’s customers, in connection with the administration, marketing or trading of the Fund.

BLOOMBERG DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE UNDERLYING INDEX OR ANY DATA RELATED THERETO AND SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS OR INTERRUPTIONS THEREIN. BLOOMBERG DOES NOT MAKE ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY BFA, OWNERS OF THE FUND OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE UNDERLYING INDEX OR ANY DATA RELATED THERETO. BLOOMBERG DOES NOT MAKE ANY EXPRESS OR IMPLIED WARRANTIES AND EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE UNDERLYING INDEX OR ANY DATA RELATED THERETO. WIT HOUT LIMITING ANY OF THE FOREGOING, TO THE MAXIMUM EXTENT ALLOWED BY LAW, BLOOMBERG, ITS LICENSORS, AND ITS AND THEIR RESPECTIVE EMPLOYEES, CONTRACTORS, AGENTS, SUPPLIERS, AND VENDORS SHALL HAVE NO LIABILITY OR RESPONSIBILITY WHAT SOEVER FOR ANY INJURY OR DAMAGES— WHETHER DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL, PUNITIVE OR OTHERWISE—ARISING IN CONNECTION WITH THE FUND OR UNDERLYING INDEX OR ANY DATA OR VALUES RELATING THERETO—WHETHER ARISING FROM THEIR NEGLIGENCE OR OTHERWISE, EVEN IF NOTIFIED OF THE POSSIBILITY THEREOF.

ICE Data Indices

The following applies with respect to each Underlying Index provided by IDI:

ICE Data Indices, LLC (“IDI”) is used with permission. “NYSE” is a registered trademark of NYSE Group, Inc., an affiliate of IDI, and is used by IDI with permission and under a license. “FactSet” is a registered trademark of FactSet Research Systems, Inc. These trademarks (as applicable) have been licensed, along with the Underlying Index, in connection with the Fund. Neither BFA, the Trust nor the Fund, as applicable, is sponsored, endorsed, sold or promoted by IDI, its affiliates or its third party suppliers (“IDI and its Suppliers”). IDI and its Suppliers make no representations or warranties regarding the advisability of investing in securities generally, in the Fund particularly, the Trust or the ability of the Underlying Index to track general market performance. IDI’s only relationship to BFA is the licensing of certain trademarks and trade names and the Underlying Index or components thereof. The Underlying Index is determined, composed and calculated by IDI without regard to BFA or the Fund or its holders. IDI has no obligation to take the needs of BFA or the holders of the Fund into consideration in determining, composing or calculating the Underlying Index. IDI is not responsible for and has not participated in the determination of the timing of, prices of, or quantities of the Fund to be issued or in the determination or calculation of the equation by which the Fund is to be priced, sold, purchased, or redeemed. Except for certain custom index calculation services, all information provided by IDI is general in nature and not tailored to the needs of BFA or any other person, entity or group of persons. IDI has no obligation or liability in connection with the administration, marketing, or trading of the Fund. IDI is not an investment adviser. Inclusion of a security within an index is not a recommendation by IDI to buy, sell, or hold such security, nor is it considered to be investment advice.

IDI AND ITS SUPPLIERS DISCLAIM ANY AND ALL WARRANTIES AND REPRESENTATIONS, EXPRESS AND/OR IMPLIED, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE, INCLUDING THE UNDERLYING INDEX, INDEX DATA AND ANY INFORMATION INCLUDED IN, RELATED TO, OR DERIVED THEREFROM (“INDEX DATA”). IDI AND ITS SUPPLIERS SHALL NOT

Page 61

BE SUBJECT TO ANY DAMAGES OR LIABILITY WITH RESPECT TO THE ADEQUACY, ACCURACY, TIMELINESS OR COMP LETENESS OF THE UNDERLYING INDEX AND THE INDEX DATA, WHICH ARE PROVIDED ON AN “AS IS” BASIS, AND YOUR USE IS AT YOUR OWN RISK.

S&P Dow Jones Indices LLC

The following applies with respect to each Underlying Index provided by SPDJI:

The Underlying Index is a product of S&P Dow Jones Indices LLC or its affiliates (“SPDJI”) and has been licensed for use by BFA or its affiliates. S&P ® , S&P 500 ® , SPX ® , SPY ® , US 500™, The 500™, iBoxx ® , iTraxx ® and CDX ® are trademarks of S&P Global, Inc. or its affiliates (“S&P”); Dow Jones ® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”); and these trademarks have been licensed for use by SPDJI and sublicensed for certain purposes by BFA or its affiliates or the Fund. It is not possible to invest directly in an index. The Fund is not sponsored or sold by SPDJI, Dow Jones, S&P, any of their respective affiliates (collectively, “S&P Dow Jones Indices”). S&P Dow Jones Indices do not make any representation or warranty, express or implied, to the owners of shares of the Fund or any member of the public regarding the advisability of investing in securities generally or in the Fund particularly or the ability of the Underlying Index to track general market performance. Past performance of an index is not an indication or guarantee of future results. S&P Dow Jones Indices’ only relationship to BFA, its affiliates and the Fund with respect to the Underlying Index is the licensing of the index and certain trademarks, service marks and/or trade names of S&P Dow Jones Indices and/or its licensors. The Underlying Index is determined, composed and calculated by S&P Dow Jones Indices without regard to BFA, its affiliates or the Fund. S&P Dow Jones Indices have no obligation to take the needs of BFA or its affiliates or the owners of shares of the Fund into consideration in determining, composing or calculating the Underlying Index. S&P Dow Jones Indices have no obligation or liability in connection with the administration, marketing or trading of the Fund. There is no assurance that investment products based on the Underlying Index will accurately track index performance or provide positive investment returns. S&P Dow Jones Indices LLC is not an investment adviser, commodity trading advisor, commodity pool operator, broker dealer, fiduciary, “promoter” (as defined in the Investment Company Act of 1940, as amended), “expert” (as enumerated within 15 U.S.C. § 77k(a)) or tax advisor. Inclusion of a security, commodity, crypto currency or other asset within an index is not a recommendation by S&P Dow Jones Indices to buy, sell, or hold such security, commodity, crypto currency or other asset, nor is it considered to be investment advice or commodity trading advice. SPDJI provides indices that use environmental, social and/or governance (“ESG”) indicators (including, without limit, business involvement screens, conformance to voluntary corporate standards, GHG emissions data, and ESG scores) to select, weight and/or exclude constituents. ESG indicators seek to measure a company’s or an asset’s performance with respect to E, S and/or G criteria. ESG indicators are derived from publicly reported data, modelled data, or a combination of reported and modelled data. ESG indicators are based on a qualitative assessment due to the absence of well-defined uniform market standards and the use of multiple methodologies to assess ESG factors. No single clear, definitive test or framework (legal, regulatory, or otherwise) exists to determine labels such as “ESG”, “sustainable”, “good governance”, “no adverse environmental, social and/or other impacts” or other equivalently labelled objectives. Therefore, the exercise of subjective judgment is necessary. Different persons may classify the same investment, products and/or strategy differently regarding the foregoing labels.

S&P DOW JONES INDICES DO NOT GUARANTEE THE ADEQUACY, ACCURACY, TIMELINESS AND/OR THE COMP LETENESS OF THE UNDERLYING INDEX OR ANY DATA RELATED THERETO OR ANY COMMUNICATION, INCLUDING BUT NOT LIMITED TO, ORAL OR WRITTEN COMMUNICATION (INCLUDING ELECTRONIC COMMUNICATIONS) WITH RESPECT THERETO. S&P DOW JONES INDICES SHALL NOT BE SUBJECT TO ANY DAMAGES OR LIABILITY FOR ANY ERRORS, OMISSIONS, OR DELAYS THEREIN. S&P DOW JONES INDICES MAKE NO EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIM ALL WARRANTIES, OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE OR AS TO RESULTS TO BE OBTAINED BY BFA OR ITS AFFILIATES, OWNERS OF SHARES OF THE FUND, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE UNDERLYING INDEX OR WITH RESPECT TO ANY DATA RELATED THERETO. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT WHATSOEVER SHALL S&P DOW JONES INDICES BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO, LOSS OF PROFITS, TRADING LOSSES, LOST TIME OR GOODWILL, EVEN IF THEY HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, WHETHER IN CONTRACT, TORT, STRICT LIABILITY, OR OTHERWISE. S&P DOW JONES INDICES HAVE NOT REVIEWED, PREPARED AND/OR CERTIFIED ANY PORTION OF, NOR DOES S&P DOW JONES INDICES HAVE ANY CONTROL OVER, THE LICENSEE PRODUCT REGISTRATION STATEMENT, PROSPECTUS OR OTHER OFFERING MATERIALS. THERE ARE NO THIRD-PARTY BENEFICIARIES OF ANY AGREEMENTS OR ARRANGEMENTS BETWEEN S&P DOW JONES INDICES AND BFA OR ITS AFFILIATES, OTHER THAN THE LICENSORS OF S&P DOW JONES INDICES.

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Want to know more?

iShares.com | 1-800-474-2737 (1-800-iShares)

Information on each Fund’s net asset value, market price, premiums and discounts, and bid-ask spreads can be found at www.iShares.com. Copies of each Fund’s Prospectus, SAI, shareholder reports and other information, as applicable and when available, can be found at www.iShares.com. For more information about a Fund, you may request a copy of the Fund’s SAI. The SAI provides detailed information about the Fund and is incorporated by reference into the Fund’s Prospectus. This means that the SAI, for legal purposes, is a part of the Fund’s Prospectus. Additional information about each Fund's investments is, or will be, available in the Fund's Annual and Semi-Annual Reports to shareholders and in Form N-CSR. In a Fund's Annual Report, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund's performance during the last fiscal year. In Form N-CSR, you will find the Fund’s annual and semi-annual financial statements. If you have any questions about the Trust or shares of a Fund or you wish to obtain a Fund’s SAI, Semi-Annual or Annual Report free of charge, please:

Call: 1-800-iShares or 1-800-474-2737 (toll free) Monday through Friday, 8:30 a.m. to 6:30 p.m. (Eastern time) Email: iSharesETFs@blackrock.com Write: c/o BlackRock Investments, LLC 1 University Square Drive, Princeton, NJ 08540

Reports and other information about each Fund are available on the EDGAR database on the SEC's website at www.sec.gov, and copies of this information may be obtained, after paying a duplicating fee, by electronic request at the following email address: publicinfo@sec.gov. No person is authorized to give any information or to make any representations about a Fund and its shares not contained in this Prospectus and you should not rely on any other information. Read and keep this Prospectus for future reference. ©2026 BlackRock, Inc. All rights reserved. iSHARES ® and BLACKROCK ® are registered trademarks of BlackRock Fund Advisors and its affiliates. All other marks are the property of their respective owners.

IS-P- 1031B-0526

Investment Company Act File No.: 811-22649

Go paperless. . . It’s Easy, Economical and Green! Go to www.icsdelivery.com

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        "text": "Bloomberg Roll Select Commodity Total"
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        "text": "Return Index"
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        "text": "Bloomberg Enhanced Roll Yield Total"
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        "text": "Return Index"
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        "text": "\u0160"
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        "text": "The Principal Investment Strategies section in the Fund\u2019s Summary Prospectus and Prospectus are"
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        "text": "deleted in their entirety and replaced with the following:"
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        "text": "The Fund seeks to track the investment results of the Bloomberg Enhanced Roll Yield Total Return"
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        "text": "Index (the \u201cUnderlying Index\u201d), which measures the performance of futures contracts across the"
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        "text": "following six physical commodity groups: energy, precious metals, industrial metals, grains and"
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        "text": "(\u201cBloomberg\u201d or the \u201cIndex Provider\u201d). The Underlying Index, which is rebalanced annually,"
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        "text": "provides broad-based exposure to commodities as an asset class by using liquidity factors and"
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        "text": "sector caps to avoid over-concentration in any single commodity or commodity sector."
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        "text": "The Fund, through its Subsidiary (as defined below), invests in financial instruments providing"
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        "text": "exposure to commodities and not in the physical commodities themselves. In seeking to achieve its"
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        "text": "investment objective, the Fund expects to obtain a substantial portion of its exposure to the"
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        "text": "Index and/or the commodity futures contracts represented in the Underlying Index. The Fund is"
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        "text": "expected to enter into new total return swap contracts on an ongoing basis and replace expiring"
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        "text": "subsequently acquired by the Fund may have terms that differ from those previously held by the"
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        "text": "Fund. The Fund generally expects to pay a fixed payment rate and swap-related fees to each"
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        "text": "counterparty and receive the total return of the Underlying Index. Although the Underlying Index"
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        "text": "contracts directly in order to obtain its exposure to the Underlying Index."
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        "text": "Investments may have a leveraging effect on the Fund."
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        "text": "arising from its investment in Commodity Investments through a cash management strategy"
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        "text": "countries and investment-grade corporate bonds."
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        "text": "In order to maintain exposure to a futures contract on a particular commodity, an investor must sell"
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        "text": "the position in the expiring contract and buy a new position in a contract with a later delivery"
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        "text": "month, which is referred to as \u201crolling.\u201d The Underlying Index employs a multi-contract roll"
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        "text": "commodity groups, with a roll period of ten business days. The Underlying Index rolls and"
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        "text": "price for the new futures contract is less than the price of the expiring contract, then the market for"
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        "text": "the commodity is said to be in \u201cbackwardation.\u201d In these markets, roll returns are positive, which is"
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        "text": "returns are negative, which is referred to as \u201cnegative carry.\u201d The Underlying Index seeks to employ"
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        "text": "As of August 31, 2026, the Underlying Index had approximately 102 constituents, and a significant"
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        "text": "The Fund gains exposure to Commodity Investments by investing through a wholly owned"
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        "text": "subsidiary organized in the Cayman Islands (the \u201cSubsidiary\u201d). The Subsidiary is advised by BFA and"
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        "id": "8331428c-fd3e-42a4-bdc0-9012a739471a",
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        "text": "company registered under the Investment Company Act of 1940, as amended (the \u201c1940 Act\u201d) and,"
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        "text": "unless otherwise noted in this Prospectus, is not subject to the investor protections of the 1940 Act."
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        "text": "The Subsidiary invests solely in Commodity Investments and cash and cash equivalents."
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        "text": "In compliance with Subchapter M of the Internal Revenue Code of 1986, as amended (the \u201cInternal"
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        "text": "Revenue Code\u201d), the Fund may invest up to 25% of its total assets in the Subsidiary. The Fund\u2019s"
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        "text": "Commodity Investments held in the Subsidiary are intended to provide the Fund with exposure to"
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        "text": "broad commodities consistent with current U.S. federal income tax laws applicable to investment"
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        "text": "companies such as the Fund, which limit the ability of investment companies to invest directly in"
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        "text": "BFA uses an indexing approach to try to achieve the Fund\u2019s investment objective. The Fund does"
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        "text": "not try to \u201cbeat\u201d the index it tracks and does not seek temporary defensive positions when markets"
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        "text": "decline or appear overvalued."
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        "text": "Indexing may eliminate the chance that the Fund will substantially outperform the Underlying Index"
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        "text": "but also may reduce some of the risks of active management, such as poor selection of securities"
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        "text": "and/or other instruments. Indexing seeks to achieve lower costs and better after-tax performance"
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        "text": "by aiming to keep portfolio turnover low in comparison to actively managed investment companies."
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        "text": "The Fund seeks to track the investment results of the Underlying Index before fees and expenses of"
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        "text": "the Fund. BFA uses a representative sampling indexing strategy to manage the Fund."
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        "text": "\u201cRepresentative sampling\u201d is an indexing strategy that involves investing in a representative sample"
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        "text": "of securities or other instruments intended to collectively have an investment profile similar to that"
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        "text": "of an applicable underlying index. The instruments selected are expected to have, in the aggregate,"
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        "text": "investment characteristics (based on factors such as market capitalization and industry"
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        "text": "weightings), fundamental characteristics (such as return variability and yield) and liquidity"
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        "text": "measures similar to those of an applicable underlying index. The Fund may or may not hold all of"
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        "text": "the components of the Underlying Index. The Fund may use derivatives to gain or reduce exposure"
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        "text": "to the components of the Underlying Index or exposure to one or more market risk factors"
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        "text": "associated with such components. Subject to the limits described herein, the Fund may purchase"
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        "text": "and hold cash and cash equivalents, including shares of money market funds advised by BFA or its"
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        "text": "affiliates, and may also purchase and hold instruments not included in the Underlying Index when"
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        "text": "BFA believes that such instruments will help the Fund track the performance of the Underlying"
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        "text": "Index over time, including in light of expected liquidity or trading costs, anticipated additions to or"
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        "text": "deletions from the Underlying Index, or other reasons as determined by BFA."
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        "text": "In accordance with Rule 35d-1 under the 1940 Act, under normal circumstances, the Fund will not"
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        "text": "invest less than 80% of the value of its net assets, plus the amount of any borrowings for"
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        "text": "investment purposes, in components of its Underlying Index. Investments in derivatives and other"
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        "text": "investments will be counted toward the Fund\u2019s 80% investment policy to the extent that they"
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        "text": "provide exposure to the components of its Underlying Index or exposure to one or more market risk"
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        "text": "factors associated with such components. The Fund\u2019s 80% investment policy may be changed by"
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        "text": "the Company\u2019s Board of Trustees (the \u201cBoard\u201d) upon 60 days\u2019 notice to shareholders."
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        "text": "The Commodity Futures Trading Commission (\u201cCFTC\u201d) has adopted certain requirements that"
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        "text": "subject registered investment companies and their advisers to regulation by the CFTC if a registered"
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        "text": "futures, options and swaps, or if a registered investment company markets itself as providing"
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        "text": "investment exposure to such instruments. Due to the Fund\u2019s potential use of such instruments"
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        "text": "above the prescribed levels, it is considered a \u201ccommodity pool\u201d under the Commodity Exchange"
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        "text": "Act (\u201cCEA\u201d). The Subsidiary is also deemed a commodity pool. BFA is considered a commodity pool"
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        "text": "operator (\u201cCPO\u201d) with respect to the Fund and the Subsidiary and is subject to regulation by the"
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        "text": "CFTC and the National Futures Association (\u201cNFA\u201d)."
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        "text": "The Underlying Index is sponsored by the Index Provider, which is independent of the Fund and"
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        "text": "BFA. The Index Provider determines the composition and relative weightings of the components of"
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        "text": "the Underlying Index and publishes information regarding the market value of the Underlying Index."
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        "text": "\u0160"
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        "text": "The subsection entitled \u201cThe Bloomberg Roll Select Commodity Total Return Index\u201d in the section"
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        "text": "entitled Construction and Maintenance of the Underlying Indexes in the Fund\u2019s SAI is deleted in its"
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        "text": "entirety and replaced with the following:"
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        "text": "The Bloomberg Enhanced Roll Yield Total Return Index"
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        "text": "The Bloomberg Enhanced Roll Yield Total Return Index (the \u201cUnderlying Index\u201d) measures the"
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        "text": "performance of a long-only basket of liquid commodity futures contracts across six physical"
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        "text": "commodity groups, including energy, precious metals, industrial metals, grains and derived grains,"
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        "id": "5fe6174f-23e0-4b26-8a14-e9ea43485177",
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        "text": "softs, and livestock, as determined by Bloomberg Index Services Limited (\u201cBloomberg\u201d or the \u201cIndex"
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        "text": "Provider\u201d). The Underlying Index, which is rebalanced annually, provides a broad-based exposure to"
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        "text": "commodities as an asset class by using liquidity factors and sector caps to avoid over-concentration"
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        "id": "bc06ad82-2697-41f7-afae-9d3f200302e0",
        "page_number": 3,
        "text": "in any single commodity or commodity sector."
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        "text": "The Underlying Index employs a multi-contract roll schedule to spread risk across three to four"
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        "id": "7d42df44-f37c-4f95-a6ad-51cbfe29567e",
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        "text": "futures contracts per commodity, e.g., three futures contracts per precious metal commodity and"
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        "id": "abe70e23-781c-40d2-b09a-8f12cbba3bbd",
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        "text": "four futures contracts per commodity in all other commodity groups, with a roll period of ten"
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        "text": "business days. The Underlying Index rolls and rebalances these contracts monthly back to equal"
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