Form 485BPOS

iSHARES® SHORT MATURITY
MUNICIPAL BOND ACTIVE ETF

Ticker: MEARStock Exchange: Cboe BZX

Investment Objective

The iShares Short Maturity Municipal Bond Active ETF (the “Fund”) seeks to maximize tax-free current income.

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 and the execution of portfolio transactions, including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and extraordinary expenses.

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 percentage of the value of your investments)1
Management Fees	Distribution and Service (12b-1) Fees	Other Expenses	Total Annual Fund Operating Expenses
0.25%	None	0.01%	0.26%

1Operating 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
$27	$84	$146	$331

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Portfolio Turnover. The Fund may pay transaction costs, such as commissions, when it buys and sells securities (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 37% of the average value of its portfolio.

Principal Investment Strategies

The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of its net assets in municipal securities such that the interest on each bond is exempt from U.S. federal income taxes and the federal alternative minimum tax (“AMT”). Under normal circumstances, the Fund primarily invests in U.S. dollar-denominated, investment-grade short-term fixed- and floating-rate municipal securities with remaining maturities of five years or less, such as municipal bonds, municipal notes and variable rate demand obligations, as well as money market instruments and registered investment companies. Investment-grade securities are rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings, Inc. (“Fitch”), or Baa3 or higher by Moody’s Investors Service, Inc. (“Moody's”), or, if unrated, determined by the Fund's management team to be of equivalent quality. Municipal bonds include debt obligations issued by or on behalf of a governmental entity or other qualifying issuer that pay interest that is, in the opinion of bond counsel to the issuer at the time of issuance, generally excludable from gross income for U.S. federal income tax purposes. The Fund may invest up to 20% of its net assets in municipal securities that pay interest that is subject to the federal AMT. Issuers may be states, territories and possessions of the U.S., including the District of Columbia, and their political subdivisions, agencies and instrumentalities. BFA or its affiliates may advise the money market funds and investment companies in which the Fund may invest.

Under normal circumstances, the effective duration of the Fund’s portfolio is expected to be 1.5 years or less, as calculated by the Fund’s management team. Effective duration is a measure of the Fund’s price sensitivity to changes in yields or interest rates; however, investors should be aware that effective duration is not an exact measurement and may not reliably predict a particular security’s price sensitivity to changes in yield or interest rates.

Under normal circumstances, the Fund will also seek to maintain a weighted average maturity that is less than three years. Weighted average maturity is a U.S. dollar-weighted average of the remaining term to maturity of the underlying securities in the Fund’s portfolio. The calculation of the Fund's weighted average maturity is based on the constituent securities' final maturity date or, for amortizing securities such as asset-backed and mortgage-backed securities, their weighted average life (i.e., the average length of time that each dollar of unpaid principal on the security remains outstanding).

The Fund is an actively managed exchange-traded fund (“ETF”) that does not seek to replicate the performance of a specified index. The Fund may have a higher degree of portfolio turnover than funds that seek to replicate the performance of an index.

The Fund is not a money market fund and does not seek to maintain a stable net asset value of $1.00 per share. Please see the Fund’s Statement of Additional Information (“SAI”) for further information.

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, 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.

Municipal Securities Risk. Municipal securities are subject to the risk that the issuer may be unable to pay the instrument’s obligations, which would adversely affect the value of the securities. Legal, regulatory, fiscal, political, economic and other developments may also adversely affect the value of municipal securities. When municipal securities depend on a specific revenue source to fund their payment obligations, the value of such securities may fluctuate as a result of actual or anticipated changes in the cash flows from the revenue source or changes in the priority of the municipal obligation to receive the cash flows. If a security loses its tax-exempt status, its value may decline significantly.

The market for municipal bonds may be less liquid than for other types of debt securities, and it may be harder for the Fund to buy and sell municipal bonds, especially on short notice. There may be less publicly available information about the financial condition of municipal security issuers than for issuers of other types of securities. As a result, municipal securities may be more difficult to value accurately. A default or insolvency of certain issuers of municipal bonds may be subject to proceedings that are significantly different from corporate bankruptcy proceedings, and the Fund’s ability to recover assets may be limited.

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.

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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.

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.

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.

Management Risk. The Fund is subject to management risk, which is the risk that the investment process, techniques, models and/or risk analyses applied by BFA will not produce the desired results. The securities or other assets selected by BFA may result in returns that are inconsistent with the Fund’s investment objective, and the Fund may underperform the market or any relevant benchmark. In addition, legislative, regulatory, or tax developments may affect the investment techniques available to BFA in connection with managing the Fund and may adversely affect the ability of the Fund to achieve its investment objective.

Asset Class Risk. The securities and other assets in the Fund’s portfolio may underperform in comparison to financial markets generally, a particular financial market, an 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.

would result in a decline in the Fund's income, or in instruments with greater risks or with other less favorable features.

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.

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.

Financial Companies Risk. Financial services companies are subject to extensive governmental regulation and intervention, which may adversely affect their profitability, the scope of their activities, the prices they can charge, the amount of capital and liquid assets they must maintain and their size, among other things. Financial services companies also may be significantly affected by, among other things, interest rates, economic conditions, volatility in financial markets, credit rating downgrades, adverse public perception, exposure concentration and counterparty risk.

Floating Rate Securities Risk. Securities with floating or variable interest rates can be less sensitive to interest rate changes than securities with fixed interest rates, but may decline in value if their coupon rates do not reset as high, or as quickly, as comparable market interest rates, and generally carry lower yields than fixed securities of the same maturity. Although floating rate securities are less sensitive to interest rate risk than fixed-rate securities, they are subject to credit risk and default risk, which could impair their value.

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.

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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 or when the Fund otherwise needs to purchase additional bonds.

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.

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.

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.

Not a Money Market Fund. The Fund is not a money market fund and is not subject to the strict rules that govern the quality, maturity, liquidity and other features of securities that money market funds may purchase. Under normal circumstances, the Fund’s investments may be more susceptible than a money market fund is to credit risk, interest rate risk, valuation risk and other risks relevant to the Fund’s investments. The Fund does not seek to maintain a stable net asset value of $1.00 per share.

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.

Prepayment Risk. During periods of falling interest rates, issuers of certain debt obligations may repay principal prior to the debt obligation’s maturity, which may cause the Fund to have to reinvest in instruments with lower yields or a higher risk of default, resulting in a decline in the Fund’s income or return potential.

Tax Risk. There is no guarantee that the Fund’s income will be exempt from U.S. federal, state or local income taxes, the federal AMT or the federal Medicare contribution tax of 3.8% on “net investment income.” Neither BFA nor the Fund guarantees that an opinion from bond counsel about a security’s tax-exempt status is correct, and there is no assurance that the Internal Revenue Service (“IRS”) will agree with the bond counsel’s opinion. Events occurring after a municipal bond is issued or acquired by a Fund may result in a determination that the bond’s interest is includible in gross income, retroactively to the bond’s date of issuance, for purposes of U.S. federal income taxes, the federal AMT or the federal Medicare contribution tax. The interest on money market instruments, other cash equivalents and derivatives held by a Fund may be subject to federal, state and local income taxes and the federal Medicare contribution tax.

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. 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 an additional index that Fund management believes more closely reflects the investment strategy of the Fund. 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

	Return (%)	Period Ended
During the periods shown in the chart:
Best Quarter	1.60%	December 31, 2023
Worst Quarter	-0.67%	March 31, 2022

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

	One Year	Five Years	Ten Years
(Inception Date: 3/3/2015)
Return Before Taxes	3.67%	2.23%	1.74%
Return After Taxes on Distributions	3.67%	2.23%	1.74%
Return After Taxes on Distributions and Sale of Fund Shares	3.40%	2.22%	1.72%
Bloomberg Municipal Bond Index (Returns do not reflect deductions for fees, expenses or taxes)	4.25%	0.80%	2.34%
Bloomberg Municipal Bond: 1 Year (1-2) Index1(Returns do not reflect deductions for fees, expenses or taxes)	3.47%	1.73%	1.58%

1 The Bloomberg Municipal Bond: 1 Year (1-2) Index is an unmanaged index composed of national municipal bond issues having a maturity of at least one year and less than two years.

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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Management

Investment Adviser. BlackRock Fund Advisors.

Portfolio Managers. Alicia De Lorenzo, Kristi Manidis, James Mauro and Christian Romaglino (the “Portfolio Managers”) are primarily responsible for the day-to-day management of the Fund. Ms. De Lorenzo, Ms. Manidis, Mr. Mauro and Mr. Romaglino have been Portfolio Managers of the Fund since 2024, 2019, 2021 and 2022, respectively.

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”).

Tax Information

The Fund intends to make distributions primarily from net tax-exempt income (but not necessarily free from federal AMT), although distributions of taxable capital gains may also occur. The Fund is generally not an appropriate investment for a 401(k) plan or an IRA. Please consult your personal tax advisor.

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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iSHARES® ULTRA SHORT DURATION BOND ACTIVE ETF

Ticker: ICSHStock Exchange: Cboe BZX

Investment Objective

The iShares Ultra Short Duration Bond Active ETF (the “Fund”) seeks to provide current income consistent with preservation of capital.

Fees and Expenses

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 percentage of the value of your investments)1
Management Fees	Distribution and Service (12b-1) Fees	Other Expenses	Total Annual Fund Operating Expenses
0.08%	None	0.00%	0.08%

1Operating expenses paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any.

1 Year	3 Years	5 Years	10 Years
$8	$26	$45	$103

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Principal Investment Strategies

The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of its net assets in a portfolio of U.S. dollar-denominated investment-grade fixed- and floating-rate debt securities that are rated BBB- or higher by S&P Global Ratings and/or Fitch Ratings, Inc. (“Fitch”), or Baa3 or higher by Moody’s Investors Service, Inc. (“Moody’s”), or, if unrated, determined by the Fund's management team to be of equivalent quality. Under normal circumstances, the Fund will invest primarily in fixed- and floating-rate securities maturing in three years or less. Short-term investments (generally, securities with original maturities of one year or less) held by the Fund carry a rating in one of the highest two rating categories of at least one nationally recognized statistical ratings organization (“NRSRO”) (e.g., A-2, P-2 or F2 or better by S&P Global Ratings, Moody’s or Fitch, respectively), or if such investments are unrated, are determined to be of comparable quality by the Fund's management team, at the time of investment.

The Fund may invest in corporate and U.S. and non-U.S. government bonds, agency securities, instruments of non-U.S. issuers, privately issued securities, asset-backed securities (“ABS”) and mortgage-backed securities (“MBS”), structured securities, municipal bonds, repurchase agreements, money market instruments and investment companies (including investment companies advised by BFA or its affiliates). The Fund invests a significant portion of its assets in securities issued by financial institutions, such as banks, broker-dealers and insurance companies.

Under normal circumstances, the effective duration of the Fund’s portfolio is expected to be one year or less, as calculated by the Fund’s management team. Effective duration is a measure of the Fund’s price sensitivity to changes in yields or interest rates; however, investors should be aware that effective duration is not an exact measurement and may not reliably predict a particular security’s price sensitivity to changes in yield or interest rates.

The Fund is not a money market fund and does not seek to maintain a stable net asset value of $1.00 per share. Please see the Fund's Statement of Additional Information (“SAI”) for further information.

The Fund may lend securities representing up to one-third of the value of the Fund's total assets (including the value of the collateral received).

Summary of Principal Risks

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.

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.

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Asset-Backed and Mortgage-Backed Securities Risk. ABS and MBS (residential and commercial) represent interests in “pools” of mortgages or other assets, including consumer loans or receivables held in trust. ABS and MBS are subject to credit, interest rate, call, extension, valuation and liquidity risk. These securities, in most cases, are not backed by the full faith and credit of the U.S. government and are subject to the risk of default on the underlying asset or mortgage, particularly during periods of economic downturn. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain ABS and MBS. For MBS issued or guaranteed by the U.S. government or one of its agencies or sponsored entities, the default or bankruptcy of a counterparty to a TBA transaction would expose the Fund to possible losses.

Call Risk. During periods of falling interest rates, an issuer of a callable debt obligation held by the Fund may “call” or repay the debt obligation before its stated maturity, and the Fund may have to reinvest the proceeds in instruments with lower yields, which would result in a decline in the Fund's income, or in instruments with greater risks or with other less favorable features.

other geographic units, markets, industries, project types, or asset classes.

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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.

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.

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.

Repurchase Agreement Risk. A repurchase agreement is an instrument under which the purchaser (i.e., the Fund) acquires a security and the seller agrees, at the time of the sale, to repurchase the security at a mutually agreed upon time and price.

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Repurchase agreements may be construed to be collateralized loans by the purchaser to the seller secured by the securities transferred to the purchaser. If a repurchase agreement is construed to be a collateralized loan, the underlying securities will not be considered to be owned by the Fund but only to constitute collateral for the seller’s obligation to pay the repurchase price. If the seller defaults on its obligation under the agreement, the Fund may suffer delays and incur costs or lose money in exercising its rights under the agreement. If the seller fails to repurchase the security and the market value of the security declines, the Fund may lose money.

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.

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.

Securities Lending Risk. The Fund may engage in securities lending. Securities lending involves the risk that the Fund may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The Fund could also lose money in the event of a decline in the value of collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for the Fund.

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Performance Information

Calendar Year-by-Year Returns

	Return (%)	Period Ended
During the periods shown in the chart:
Best Quarter	1.77%	September 30, 2024
Worst Quarter	-0.41%	March 31, 2022

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

	One Year	Five Years	Ten Years
(Inception Date: 12/11/2013)
Return Before Taxes	4.88%	3.40%	2.68%
Return After Taxes on Distributions	2.96%	2.01%	1.63%
Return After Taxes on Distributions and Sale of Fund Shares	2.87%	2.00%	1.60%
ICE BofA US Broad Market Index (Returns do not reflect deductions for fees, expenses or taxes)	7.15%	-0.42%	2.01%
ICE BofA 6-Month US Treasury Bill Index (Spliced)1,2 (Returns do not reflect deductions for fees, expenses or taxes)	4.28%	3.21%	2.32%

1 The ICE BofA 6-Month US Treasury Bill Index is an unmanaged index that measures the performance of government securities with less than six months remaining to maturity.

2 The ICE BofA 6-Month US Treasury Bill Index (Spliced) reflects the performance of the standard pricing variant of the ICE BofA 6-Month US Treasury Bill Index through February 28, 2021; the 4 PM pricing variant of the ICE BofA 6-Month US Treasury Bill Index from March 1, 2021 through November 30, 2023; and the standard pricing variant of the ICE BofA 6- Month US Treasury Bill Index, which now utilizes pricing as of 4 PM, thereafter.

S-19

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”).

Portfolio Managers. Eric Hiatt, James Mauro and Bradford Glessner (the “Portfolio Managers”) are primarily responsible for the day-to-day management of the Fund. Each Portfolio Manager supervises a portfolio management team. Mr. Hiatt, Mr. Mauro and Mr. Glessner have been Portfolio Managers of the Fund since 2022, 2021 and 2024, respectively.

Purchase and Sale of Fund Shares

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

S-20

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 may be changed without shareholder approval. Each Fund does not seek to replicate the performance of a specified index.

Fund	Investment Objective
iShares Short Duration Bond Active ETF	The iShares Short Duration Bond Active ETF seeks total return in excess of the reference benchmark.
iShares Short Maturity Municipal Bond Active ETF	The iShares Short Maturity Municipal Bond Active ETF seeks to maximize tax-free current income.
iShares Ultra Short Duration Bond Active ETF1	The iShares Ultra Short Duration Bond Active ETF seeks to provide current income consistent with preservation of capital.

On April 25, 2025, the name of the Fund changed from the iShares Ultra Short-Term Bond Active ETF to the iShares Ultra Short Duration Bond Active ETF.

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.

Additional Information About Investment Strategies – iShares Short Duration Bond Active ETF

The Fund’s investment objective is a non-fundamental policy and may be changed without shareholder approval. “Total return” used in the investment objective is a way of measuring fund performance. Total return is based on a calculation that takes into account income dividends, capital gain distributions and the increase or decrease in share price. The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of its net assets in a portfolio of U.S. dollar-denominated investment-grade fixed-income securities that are rated BBB- or higher by S&P Global Ratings and/or Fitch, or Baa3 or higher by Moody’s, or, if unrated, determined by the management team to be of equivalent quality. The Fund’s reference benchmark is the Bloomberg U.S. 1-3 Year Government/Credit Bond Index, which measures the performance of U.S. dollar-denominated government, government-related and corporate securities with remaining maturity between one and three years. The Fund’s 80% investment policy may be changed by the Fund’s Board of Trustees (the “Board”) upon 60 days’ notice to shareholders.

The Fund primarily invests in fixed- and floating-rate securities of varying maturities, such as corporate and government bonds, agency securities, instruments of non-U.S. issuers, privately issued securities, ABS and MBS, structured securities, municipal bonds, money market instruments, repurchase agreements and investment companies. The Fund invests in securities issued by financial institutions such as banks, broker-dealers and insurance companies. BFA or its affiliates may advise the money market funds and investment companies in which the Fund may invest. The Fund’s investment in instruments of non-U.S. issuers may be invested in emerging markets issuers.

The Fund may buy or sell options or futures on a security or an index of securities, or enter into credit default swaps and interest rate or foreign currency transactions, including swaps (collectively, commonly known as derivatives). The Fund may use derivatives to hedge its investments or to seek to enhance returns.

The Fund will invest in ABS and MBS. ABS are fixed-income securities that are backed by a pool of assets, usually loans such as installment sale contracts or credit card receivables. MBS are ABS based on a particular type of asset, a mortgage. There are a wide variety of MBS involving commercial or residential, fixed-rate or adjustable-rate mortgages and mortgages issued by banks or government agencies. Most transactions in fixed-rate mortgage pass-through securities occur through standardized contracts for future delivery in which the exact mortgage pools to be delivered are not specified until a few days prior to settlement, known as TBA transactions. The Fund may enter into such contracts on a regular basis. The Fund, pending settlement of such contracts, will invest the relevant assets in high-quality, liquid short-term instruments, including shares of money market funds affiliated with BFA. Collateralized mortgage obligations (“CMOs”) are fixed-income securities that are backed by cash flows from pools of mortgages. CMOs may have multiple classes with different payment rights and protections.

An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, BFA or any of its affiliates.

Investment Process. The management team evaluates sectors of the fixed-income market and individual securities within these sectors to invest the Fund’s assets on an ongoing basis. The investment approach represents a collaboration between the “Portfolio Teams,” who are responsible for setting the top-down asset allocation framework for portfolio construction and security selection, and the “Sector Specialists,” who are responsible for bottom-up idea generation, including research and analysis.

The investment process is centered around formal investment strategy meetings. Following discussions with their teams, the senior members of the Sector Specialists present their teams’ views during a meeting attended by fixed-income investment professionals within BlackRock. Next, the senior members of the Portfolio and Investment Teams, along with representatives from BlackRock’s Risk & Quantitative Analysis Group, hold a meeting to discuss asset allocation, portfolio risk, and investment themes. This meeting is designed to share ideas across Portfolio Teams as each determines the appropriate interest rate risk, convexity, term structure, credit quality, liquidity bias and sector allocations for individual strategies.

The Sector Specialists then implement the Portfolio Teams’ relative value outlook with respect to security selection, timing and execution, in accordance with the Fund’s investment objective and guidelines. Sector Specialists are also responsible for trading, which BlackRock believes best leverages its market knowledge and experience. While the investment themes are discussed formally on a weekly basis, the process is dynamic, with ongoing discussion and modifications as needed.

In certain situations or market conditions, the Fund may temporarily depart from its normal investment process, provided that such departure is, in the opinion of the management team, consistent with the Fund’s investment objective and in the best interests of the Fund. For example, the Fund may hold a higher than normal proportion of its assets in cash in response to adverse market, economic or political conditions.

The management team uses an internal model for calculating duration, which may result in a different value of duration than if duration was calculated by a third party.

Additional Information About Investment Strategies – iShares Short Maturity Municipal Bond Active ETF

The Fund’s investment objective is a non-fundamental policy and may be changed without shareholder approval. The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of its net assets in municipal securities such that the interest on each bond is exempt from U.S. federal income taxes and the federal AMT. The Fund’s 80% investment policy may be changed by the Fund’s Board upon 60 days’ notice to shareholders.

Under normal circumstances, the Fund primarily invests in U.S. dollar-denominated, investment-grade short-term fixed- and floating-rate municipal securities with remaining maturities of five years or less such as municipal bonds, municipal notes and variable rate demand obligations, as well as money market instruments and registered investment companies. Investment-grade securities are rated BBB- or higher by S&P Global Ratings and/or Fitch, or Baa3 or higher by Moody’s, or, if unrated, determined by the management team to be of equivalent quality. Municipal bonds include debt obligations issued by or on behalf of a governmental entity or other qualifying issuer that pay interest that is, in the opinion of bond counsel to the issuer at the time of issuance, generally excludable from gross income for U.S. federal income tax purposes. The Fund may invest up to 20% of its net assets in municipal securities that pay interest that is subject to the federal AMT. Issuers may be states, territories and possessions of the U.S., including the District of Columbia, and their political subdivisions, agencies and instrumentalities. BFA or its affiliates may advise the money market funds and investment companies in which the Fund may invest.

Under normal circumstances, the Fund will also seek to maintain a weighted average maturity that is less than three years. Weighted average maturity is a U.S. dollar-weighted average of the remaining term to maturity of the underlying securities in the Fund’s portfolio. The calculation of the Fund’s weighted average maturity is based on the constituent securities’ final maturity date or, for amortizing securities such as asset-backed and mortgage-backed securities, their weighted average life (i.e., the average length of time that each dollar of unpaid principal on the security remains outstanding).

The Fund may, to a limited extent, engage in derivatives transactions that include interest rate futures.

An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, BFA or any of its affiliates.

Investment Process. The management team evaluates portfolio construction, municipal security selection, and trade execution on an ongoing basis. The investment approach represents a collaboration between the Municipal Funds Portfolio Management Team and Municipal Credit Research Team. The Municipal Credit Research Team provides credit oversight and research and independently rates each security in the investment universe with a BlackRock equivalent rating. The Municipal Funds Portfolio Management Team uses these credit ratings in conjunction with the following factors to manage the portfolio:

■

Credit Quality of Issuers — based on bond ratings and other factors, including economic and financial conditions.

■

Yield Analysis — takes into account factors such as the different yields available on different types of obligations and the shape of the yield curve (longer-term obligations typically have higher yields).

■

Maturity Analysis — the weighted average maturity of the portfolio will be maintained within a desirable range as determined from time to time. Factors considered include portfolio activity, maturity of the supply of available bonds and the shape of the yield curve. Maturity of a debt security refers to the date upon which debt securities are due to be repaid, that is, the date when the issuer generally must pay back the face amount of the security. The securities to be selected will have remaining maturities of up to five years, calculated off the put dates.

In certain situations or market conditions, the Fund may temporarily depart from its normal investment process, provided that such departure is, in the opinion of the management team, consistent with the Fund’s investment objective and in the best interests of the Fund. For example, the Fund may hold a higher than normal proportion of its assets in cash and cash equivalents in response to adverse market, economic or political conditions.

The management team uses an internal model for calculating effective duration, which may result in a different value of effective duration than if it were calculated by a third party.

Additional Information About Investment Strategies – iShares Ultra Short Duration Bond Active ETF

The Fund seeks to achieve its investment objective by investing, under normal circumstances, at least 80% of its net assets in a portfolio of U.S. dollar-denominated investment-grade fixed- and floating-rate debt securities that are rated BBB- or higher by S&P Global Ratings and/or Fitch, or Baa3 or higher by Moody’s, or, if unrated, determined by the Fund’s management team to be of equivalent quality. Under normal circumstances, the Fund will invest primarily in fixed- and floating-rate securities maturing in three years or less. Short-term investments (generally, securities with original maturities of one year or less) held by the Fund carry a rating in one of the highest two rating categories of at least one NRSRO (e.g., A-2, P-2 or F2 or better by S&P Global Ratings, Moody’s or Fitch, respectively), or if such investments are unrated, are determined to be of comparable quality by BFA, at the time of investment. The Fund’s 80% investment policy may be changed by the Fund’s Board upon 60 days’ notice to shareholders.

The Fund may invest in corporate and U.S. and non-U.S. government bonds, agency securities, instruments of non-U.S. issuers, privately issued securities, ABS and MBS, structured securities, municipal bonds, repurchase agreements, money market instruments and investment companies. The Fund invests a significant portion of its assets in securities issued by financial institutions, such as banks, broker-dealers and insurance companies. BFA or its affiliates may advise the money market funds and investment companies in which the Fund may invest.

The Fund may invest in ABS and MBS. ABS are fixed-income securities that are backed by a pool of assets, usually loans such as installment sale contracts or credit card receivables. MBS are ABS based on a particular type of asset, a mortgage. There are a wide variety of MBS involving commercial or residential, fixed-rate or adjustable-rate mortgages and mortgages issued by banks or government agencies. Most transactions in fixed-rate mortgage pass-through securities occur through standardized contracts for future delivery in which the exact mortgage pools to be delivered are not specified until a few days prior to settlement, known as TBA transactions. The Fund may enter into such contracts on a regular basis. The Fund, pending settlement of such contracts, will invest the relevant assets in high-quality, liquid short-term instruments, including shares of money market funds affiliated with BFA. Collateralized mortgage obligations (“CMOs”) are fixed-income securities that are backed by cash flows from pools of mortgages. CMOs may have multiple classes with different payment rights and protections.

The Fund may, to a limited extent, engage in derivatives transactions that include futures contracts, options and swaps.

Investment Process. The cash portfolio management team participates in formal investment strategy meetings where investment professionals present their views on the various market sectors, asset allocation, portfolio risk, and other investment themes. The macro, firm-level view is a consideration in setting the investment strategy.

Decisions regarding interest rate risk, credit quality, liquidity profile and sector allocation are made by the Investment Strategy and Risk Committees. These committees build on the broader macro themes and apply them specifically to the short-term markets. The meetings are supplemented by shorter daily market updates where portfolio managers report on their specific sectors to determine relative value within the short term markets. This is a fluid process with intraday dialogue to make adjustments to portfolios when appropriate.

The collective result of these meetings is the investment strategy that liquidity portfolio managers subsequently implement. Using this method, the group is able to manage portfolios on a team basis but still leverage the individual expertise of each of its members throughout the firm.

In certain situations or market conditions, the Fund may temporarily depart from its normal investment process, provided that such departure is, in the opinion of BFA, consistent with the Fund’s investment objective and in the best interests of the Fund. For example, the Fund may hold a higher than normal proportion of its assets in cash in response to adverse market, economic or political conditions.

The management team uses an internal model for calculating duration, which may result in a different value of duration than if duration was calculated by a third party.

An investment in the Fund is not a bank deposit and it is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, BFA or any of its affiliates.

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”) also may be indirectly exposed to these risks through such investment. A description of each risk is provided after the table.

	iShares Short Duration Bond Active ETF	iShares Short Maturity Municipal Bond Active ETF	iShares Ultra Short Duration Bond Active ETF
✓ Principal Risk \| • Other Risk
Asset-Backed and Mortgage-Backed Securities Risk	✓		✓
Asset Class Risk	✓	✓	✓
Authorized Participant Concentration Risk	✓	✓	✓
Australasian Economic Risk			•
Call Risk	✓	✓	✓
Cash Management Risk	•
Cash Transactions Risk	✓	✓	✓
Close-Out Risk for Qualified Financial Contracts	•	•	•
Commercial Mortgage-Backed Securities Risk	•
Concentration Risk	✓	✓	✓
Credit Risk	✓	✓	✓
Currency Risk	•
Derivatives Risk	✓	•
European Economic Risk	•		•
Extension Risk	✓
Financial Companies Risk	✓	✓	✓
Floating Rate Securities Risk	✓	✓	✓
Futures Contract Risk	✓
Geographic and Security Risks	•	•	•
High Portfolio Turnover Risk	✓
Illiquid Investments Risk	✓	✓	✓
Income Risk	✓	✓	✓
Interest Rate Risk	✓	✓	✓
Issuer Risk	✓	✓	✓
Large Shareholder and Large-Scale Redemption Risk	✓	✓	✓
Management Risk	✓	✓	✓
Market Risk	✓	✓	✓
Market Trading Risk	✓	✓	✓
Municipal Securities Risk	✓	✓	✓
National Closed Market Trading Risk	•		✓
Non-U.S. Securities Risk	•		✓
North American Economic Risk			•
Not a Money Market Fund	✓	✓	✓
Operational and Technology Risks	✓	✓	✓
Ownership Limitations Risk	•	•	•
Prepayment Risk	✓	✓
Privately Issued Securities Risk	✓		✓

	iShares Short Duration Bond Active ETF	iShares Short Maturity Municipal Bond Active ETF	iShares Ultra Short Duration Bond Active ETF
✓ Principal Risk \| • Other Risk
Reference Rate Replacement Risk	•		•
Repurchase Agreement Risk	✓		✓
Risk of Investing in Developed Countries	•		✓
Risk of Investing in the U.S.	✓	✓	✓
Risk of Swap Agreements	✓
Securities Lending Risk	✓		✓
Tax Risk		✓
U.S. Treasury Obligations Risk	✓	•	•
Valuation Risk	✓	✓	✓

Asset-Backed and Mortgage-Backed Securities Risk. ABS and MBS (residential and commercial) represent interests in “pools” of mortgages or other assets, including consumer loans or receivables held in trust. Although ABS generally experience less prepayment risk than residential mortgage-backed securities, MBS and ABS, like traditional fixed-income securities, are subject to credit, interest rate, call, extension, valuation and liquidity risk. Because of call and extension risk, ABS and MBS react differently to changes in interest rates than other bonds. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain ABS and MBS.

ABS and MBS may not be backed by the full faith and credit of the U.S. government and are subject to risk of default on the underlying mortgage or asset, particularly during periods of economic downturn.

MBS may be either pass-through securities or CMOs. Pass-through securities represent a right to receive principal and interest payments collected on a pool of mortgages, which are passed through to security holders. CMOs are created by dividing the principal and interest payments collected on a pool of mortgages into several revenue streams (tranches) with different priority rights to portions of the underlying mortgage payments. Certain CMO tranches may represent a right to receive interest only, principal only or an amount that remains after floating-rate tranches are paid (an inverse floater). These securities are frequently referred to as “mortgage derivatives” and may be extremely sensitive to changes in interest rates. Interest rates on inverse floaters, for example, vary inversely with a short-term floating rate (which may be reset periodically). Interest rates on inverse floaters will decrease when short-term rates increase, and will increase when short-term rates decrease. These securities have the effect of providing a degree of investment leverage. In response to changes in market interest rates or other market conditions, the value of an inverse floater may increase or decrease at a multiple of the increase or decrease in the value of the underlying securities. If the Fund invests in CMO tranches (including CMO tranches issued by government agencies) and interest rates move in a manner not anticipated by Fund management, it is possible that the Fund could lose all or substantially all of its investment.

A Fund may seek to obtain exposure to the fixed-rate portion of U.S. agency mortgage pass-through securities primarily through to-be-announced transactions, or TBAs. TBAs involve forward or delayed settlement in which the buyer does not know the actual MBS to be delivered until 48 hours before the settlement date. Losses may arise in TBAs due to changes in the value of the securities or if the counterparty does not perform under the terms of the agreement. If the TBA counterparty files for bankruptcy or becomes insolvent, a Fund’s right to repurchase or sell the securities involved in the transaction may be limited and the Fund may experience losses.

A Fund may invest cash pending settlement of TBA transactions in money market instruments, repurchase agreements, or other high-quality, liquid short-term instruments, including money market funds advised by BFA. A Fund will pay its pro rata share of fees and expenses of any money market fund that it may invest in, in addition to the Fund’s own fees and expenses.

Asset Class Risk. The securities and other assets in a Fund’s portfolio 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.

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.

Australasian Economic Risk. The economies of Australasia, which include Australia and New Zealand, depend on exports from the energy, agricultural and mining sectors and, as a result, are susceptible to fluctuations in the commodity markets. These economies also increasingly depend on their growing service industries. The Australasian economies depend on the economies of their key trading partners, which include China, Japan, South Korea, the U.S. and certain European countries. Reduced spending by any of these trading partners on Australasian products and services, or negative changes in any of these economies, may have an adverse impact on some or all of the Australasian economies. Economic events in key trading countries can have a significant effect on the Australasian economies.

Other risks to Australasian countries include natural disasters that may occur in the region (e.g., droughts, earthquakes, fires, tsunamis) and national or regional security concerns (e.g., terrorism, war, strained international relations). Any such event may adversely affect the Australasian economies, financial markets or issuers of securities, causing an adverse impact on the value of a Fund’s investments.

Call Risk. During periods of falling interest rates, an issuer of a callable debt obligation held by a Fund may “call” or repay the debt obligation before its stated maturity, and the Fund may have to reinvest the proceeds in instruments with lower yields, which would result in a decline in a Fund’s income, or in instruments with greater risks or with other less favorable features.

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.

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.

Commercial Mortgage-Backed Securities Risk. CMBS depend on cash flows generated by underlying commercial real estate loans, receivables or other assets. The value of CMBS can be significantly affected by changes in interest rates, the availability of information about the underlying assets and their structure, and the creditworthiness of the originators of the underlying assets. In addition, the value of CMBS may be adversely affected by regulatory or tax changes.

CMBS are subject to a greater degree of prepayment and extension risk than many other forms of fixed-income securities. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain CMBS. Certain CMBS are issued in several classes with different levels of yield and credit protection, and a Fund may invest in the lower classes that have greater risks than the higher classes, including greater default, interest rate, prepayment and extension risks.

CMBS issued by non-government entities such as banks and mortgage lenders may offer higher yields, but also may be subject to greater volatility, than those issued or guaranteed by government agencies or government-sponsored entities. Securities issued or guaranteed by

U.S. government-sponsored entities are not backed by the full faith and credit of the U.S. government, and there is no assurance that the U.S. government will provide financial support.

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.

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 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.

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 financial 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.

Extension Risk. During periods of rising interest rates, certain debt obligations may be paid off substantially more slowly than originally anticipated and the value of those debt obligations may fall sharply, resulting in a decline in a Fund’s income and potentially in the value of a Fund’s investments.

Financial Companies Risk. Financial services companies are subject to extensive governmental regulation and intervention, which may change frequently and may adversely affect their profitability, the scope of their activities, the prices they can charge, the amount of capital and liquid assets they must maintain and their size, among other things. Financial services companies also may be significantly affected by, among other things, interest rates, economic conditions, credit rating downgrades, adverse public perception and exposure concentration. Increased risk-taking by financial companies may result in greater overall risk in the global financial sector. Certain events may cause an unusually high degree of volatility in financial markets and pose the risk of large losses for financial services companies.

Financial companies frequently operate with substantial financial leverage and are exposed directly to the credit risk of their borrowers and counterparties, which also may be leveraged to an unknown degree. Financial companies may have significant exposure to the same borrowers and counterparties; as a result, a borrower’s or counterparty’s inability to meet its obligations to one company may affect other financial companies with exposure to the same borrower or counterparty. This interconnectedness of risk may result in significant negative impacts to companies with direct exposure to the defaulting counterparty as well as adverse cascading effects in the markets and the financial sector generally.

Floating Rate Securities Risk. Compared to the broader U.S. Treasury note market, the issuance of floating rate obligations by the U.S. Treasury is relatively new. A deep and liquid market has not yet developed for these instruments, and the market remains relatively untested. Securities with floating or variable interest rates can be less sensitive to interest rate changes than securities with fixed interest rates, but may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general. Conversely, floating rate securities will not generally increase in value if interest rates decline. A decline in interest rates may result in a reduction in income received from floating rate securities held by a Fund and may adversely affect the value of the Fund’s shares. Generally, floating rate securities carry lower yields than fixed securities of the same maturity. The interest rate for a floating rate security resets or adjusts periodically by reference to a benchmark interest rate. The impact of interest rate changes on floating rate investments is typically mitigated by the periodic interest rate reset of the investments. Securities with longer durations tend to be more sensitive to interest rate changes, usually making them more volatile than securities with shorter durations. Floating rate securities generally are subject to legal or contractual restrictions on resale, may trade infrequently, and their value may be impaired when the Fund needs to liquidate such loans. Benchmark interest rates, such as the Secured Overnight Financing Rate (SOFR), may not accurately track market interest rates.

Although floating rate securities are less sensitive to interest rate risk than fixed-rate securities, they are subject to credit risk and default risk, which could impair their value.

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.

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 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.

High Portfolio Turnover Risk. The sale and purchase of securities and other assets in a Fund’s portfolio generally involve transaction costs to the Fund (e.g., brokerage commissions, dealer mark-ups). Higher portfolio turnover may cause the Fund to incur additional transaction costs, which have the effect of reducing the Fund’s investment return. In addition, greater frequency in the sale of securities or other assets may result in the realization or distribution to Fund shareholders of greater capital gains (including short-term gains) compared to a fund with less turnover. These effects of high portfolio turnover may adversely affect a Fund’s performance and could result in undesirable tax consequences for shareholders. Certain investment strategies (e.g., active management, investing in dollar rolls or to-be-announced mortgage trades) and volatile market conditions may be more likely to involve higher portfolio turnover.

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.

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. A Fund that is actively managed or that has an outcome strategy is subject to the risk that BFA’s investment process, techniques, models and/or and risk analyses in making investment decisions for the Fund will not produce the desired results. The securities or other assets selected by BFA may result in returns that are inconsistent with the Fund’s investment objective, and the Fund may underperform the market or any relevant benchmark. In addition, legislative, regulatory, or tax developments may affect the investment techniques available to BFA in connection with managing such a Fund and may also adversely affect the ability of the Fund to 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, 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. 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 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.

Municipal Securities Risk. Municipal securities include both general obligation bonds (bonds secured by the full faith and credit of the issuer) and limited obligation bonds (or “Revenue Bonds”). All municipal securities are subject to the risk that litigation, legislation or other political events, local business or economic conditions, credit rating downgrades, or the bankruptcy of the issuer could have a significant effect on an issuer’s ability to make payments of principal and/or interest or otherwise affect the value of such securities. Additionally, certain municipal securities may be issued by entities with limited taxing authority, which could limit or prevent tax increases necessary to make continued payments of principal and interest.

Municipal securities can be significantly affected by political or economic changes, including changes made in the law after issuance of the securities, as well as uncertainties in the municipal market related to taxation, legislative changes or the rights of municipal security holders, including in connection with an issuer insolvency. There is also the risk that corruption may negatively affect municipal issuers, including corruption related to a particular project from which payments on a security are derived, resulting in delays and cost overruns.

There may be less publicly available information on the financial condition of municipal security issuers than for issuers of other securities. As a result, municipal securities may be more difficult for the Fund to value accurately than the securities of public companies. Municipal securities may also be harder to buy and sell compared to taxable bonds and non-municipal securities, especially on short notice. If a Fund invests a significant portion of its portfolio in municipal securities, the Fund’s portfolio is subject to greater exposure to illiquidity risk than a fund that invests in comparable taxable bonds or non-municipal securities.

A Fund and BFA will rely on the opinion of issuers’ bond counsel on the tax-exempt status of interest on municipal bonds. Neither the Fund nor BFA will independently review the bases for those tax opinions, which may ultimately be determined to be incorrect, potentially resulting

in the Fund and its shareholders being subject to substantial tax liabilities. In addition, changes in the financial condition of an individual municipal issuer can affect the overall municipal market.

Revenue Bonds are backed by current or anticipated revenues from a specific project or specific assets and can be negatively affected by the discontinuance of the tax benefits supporting the project or assets or the inability to collect revenues from the project or the assets. Additionally, the market values of Revenue Bonds may decline in times of higher inflation to the extent that revenues are fixed income streams. In other instances, the prices that an issuer is able to charge users of its assets may be linked to inflation, whether by government regulation, contractual arrangement or other factors. Rising interest rates could result in higher costs of capital for certain issuers, which could negatively impact their ability to meet payment obligations. In this case, changes in the rate of inflation may affect the issuer’s revenues. Because many municipal securities are issued to finance projects, such as those related to education, health care, housing, transportation, utilities, and water and sewer, conditions in one or more of these sectors can affect the overall municipal market. Adverse conditions and developments affecting a particular project can result in lower revenues to an issuer of the municipal securities and, by extension, adversely affect payments of principal and interest on, or the market value of, such securities.

Additionally, certain municipal securities are issued by entities dependent on revenue from a particular sector and thus are subject to the specific risks associated with that sector.

Risk of Investing in Infrastructure-Related Municipal Securities. Entities that issue municipal securities related to infrastructure (“infrastructure issuers”) may be subject to a variety of factors that could adversely affect their capacity to make principal and interest payments, such as high interest costs in connection with capital construction programs, high degrees of leverage, costs associated with governmental, environmental and other regulations, the effects of economic slowdowns, increased competition from other providers of services, uncertainties concerning costs, the level of government spending on infrastructure projects, and other factors. Such issuers may be adversely affected by commodity price volatility, changes in exchange rates, import controls, depletion of resources, technological developments, and labor relations. Infrastructure issuers can be significantly affected by government spending policies.

Leverage Risk. Infrastructure issuers can be highly indebted, which increases investment risk and other risks normally associated with debt financing, which could adversely affect such an issuer’s operations and the market value of related municipal securities in periods of rising interest rates.

Operations Risk. The failure of an infrastructure issuer to carry adequate insurance or to operate its assets appropriately could lead to significant losses. Infrastructure may be adversely affected by environmental clean-up costs and catastrophic events such as earthquakes, hurricanes and terrorist acts.

Regulatory Risk. Infrastructure projects may be subject to significant regulation by various governmental authorities and also may be affected by regulation of rates charged to customers, service interruption due to environmental, operational or other events, the imposition of special tariffs and changes in tax laws, regulatory policies and accounting standards.

Strategic Asset Risk. Infrastructure issuers may control significant strategic assets (e.g., major pipelines or highways), which are assets that have a national or regional profile, and may have monopolistic characteristics. Given their national or regional profile or irreplaceable nature, strategic assets could generate additional risk not common in other industry sectors and they may be targeted for terrorist acts or adverse political actions.

User Risk. Infrastructure issuers can be dependent upon a narrow user base. If these users do not patronize infrastructure projects as expected, significant revenues could be lost and may not be replaceable, in which case infrastructure issuers may fail to pay their obligations.

Risk of Investing in Municipal Securities Issued By School Districts. School districts rely, in part, on funding appropriations from, among others, the federal government and state governments. As a result, municipal securities issued by school districts may be adversely affected by political and economic changes at the state or federal levels, such as decreased tax or other revenues, spending reductions or changes in appropriations. Municipal securities that are issued to finance a particular school district project often depend on revenues from ad valorem taxes (i.e., property taxes) to make principal and interest payments. Investors in these securities, similar to investors in municipal securities generally, face heightened risk of loss upon insolvency of the school district issuers because there is often no ready source of funding to pay principal and interest other than the local tax base, which a bankruptcy court or administrator does not control.

Risk of Investing in Transportation Infrastructure-Related Municipal Securities. The transportation infrastructure industry may be adversely affected by economic changes, increases in fuel and other operating costs, labor relations, insurance costs, and, in many jurisdictions, the effects of regulatory changes or other government decisions. Municipal securities that are issued to finance a particular transportation project (e.g., toll roads) often depend on revenues from that project to make principal and interest payments.

Risk of Investing in Utility-Related Municipal Securities. Certain municipal securities are issued by public bodies, including state and municipal utility authorities, to, among other things, finance the operation or expansion of utility entities. Various future economic and other conditions may adversely affect utility entities, including inflation, increases in financing requirements, increases in raw material costs and other operating costs, changes in demand for services and the effects of environmental and other governmental regulations. Certain utilities are subject to specific risks. For example, gas utilities are subject to risks of supply conditions and increased competition from other providers of utility services. In addition, gas utilities are affected by gas prices, which may be magnified to the extent that a gas utility enters into long-term contracts for the purchase or sale of gas at a fixed price, since such prices may change significantly and to the disadvantage of the gas utility.

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-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:

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Less liquid markets, which may make valuing securities more difficult;

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Greater market volatility;

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Government intervention in issuers' operations or structure;

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Government expropriation or nationalization of assets;

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Exchange rate fluctuations and currency controls;

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Limitations on the foreign ownership of securities;

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Imposition of withholding or other taxes;

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Restrictions on the repatriation of capital;

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Higher transaction and custody costs;

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Foreign market trading hours, different clearing and settlement procedures, and holiday schedules, which may limit a Fund's ability to engage in portfolio transactions;

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Less regulation of the securities and other financial markets;

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Less availability of public information about issuers;

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Weaker accounting, audit, disclosure and financial reporting requirements and the risk of being delisted from U.S. exchanges;

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Difficulties in enforcing contractual obligations; and

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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 (“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.

Not a Money Market Fund. Each Fund is not a money market fund and is not subject to the strict rules that govern the quality, maturity, liquidity and other features of securities that money market funds may purchase. Under normal circumstances, a Fund’s investments may be more susceptible than a money market fund is to credit risk, interest rate risk, valuation risk and other risks relevant to the Fund’s investments. The Funds do not seek to maintain a stable net asset value of $1.00 per share.

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.

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.

Prepayment Risk. During periods of falling interest rates, issuers of certain debt obligations may repay principal prior to the debt obligation’s maturity, which may cause a Fund to have to reinvest in instruments with lower yields or a higher risk of default, resulting in a

decline in a Fund’s income or return potential. Also, if an obligation subject to prepayment was purchased at a premium, the value of the premium would be lost in the event of prepayment.

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.

Reference Rate Replacement Risk. A Fund may be exposed to financial instruments that recently transitioned from, or continue to be tied to, LIBOR to determine payment obligations, financing terms, hedging strategies or investment value. The United Kingdom’s Financial Conduct Authority (“FCA”), which regulates LIBOR, has ceased publishing all LIBOR settings. In April 2023, however, the FCA announced that some USD LIBOR settings will continue to be published under a synthetic methodology until September 30, 2024 for certain legacy contracts. SOFR, which is a broad measure of the cost of borrowing cash overnight collateralized by U.S. Treasury securities in the repurchase agreement market, has been used increasingly on a voluntary basis in new instruments and transactions. Under U.S. regulations that implement a statutory fallback mechanism to replace LIBOR, benchmark rates based on SOFR have replaced LIBOR in different categories of financial contracts.

Neither the effect of the LIBOR transition process nor its ultimate success can yet be known. While some existing LIBOR-based instruments may contemplate a scenario where LIBOR is no longer available by providing for an alternative rate-setting methodology, there may be significant uncertainty regarding the effectiveness of any such alternative methodologies to replicate LIBOR. Not all existing LIBOR-based instruments may have alternative rate-setting provisions and there remains uncertainty regarding the willingness and ability of issuers to add alternative rate-setting provisions in certain existing instruments. Parties to contracts, securities, or other instruments using LIBOR may disagree on transition rates or the application of transition regulation, potentially resulting in uncertainty of performance and the possibility of litigation. A Fund may have instruments linked to other interbank offered rates that may also cease to be published in the future.

Repurchase Agreement Risk. A repurchase agreement is an instrument under which the purchaser (i.e., a Fund) acquires a security and the seller agrees, at the time of the sale, to repurchase the security at a mutually agreed upon time and price. Repurchase agreements may be construed to be collateralized loans by the purchaser to the seller secured by the securities transferred to the purchaser. If a repurchase agreement is construed to be a collateralized loan, the underlying securities will not be considered to be owned by a Fund but only to constitute collateral for the seller’s obligation to pay the repurchase price. If the seller defaults on its obligation under the agreement, a Fund may suffer delays and incur costs or lose money in exercising its rights under the agreement. If the seller fails to repurchase the security and the market value of the security declines, a Fund may lose money.

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.

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 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 swaps are subject to mandatory central clearing. Central clearing is expected to reduce counterparty credit risk and increase liquidity, but central clearing does not make swap transactions risk-free. 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.

Securities Lending Risk. A Fund may engage in securities lending. Securities lending involves the risk that a Fund may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. A Fund could also lose money in the event of a decline in the value of collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for a Fund.

Tax Risk. There is no guarantee that a Fund’s income will be exempt from U.S. federal income taxes, the federal AMT or the federal Medicare contribution tax of 3.8% on “net investment income.” BFA relies on the bond issuer’s prospectus disclosure of the opinion from its counsel as to the tax-exempt status of the investment. Neither BFA nor a Fund guarantees that this opinion is correct, and there is no assurance that the U.S. Internal Revenue Service (“IRS”) will agree with the bond issuer’s counsel’s tax opinion. Issuers or other parties generally enter into covenants requiring continuing compliance with U.S. federal tax requirements to preserve the tax-free status of interest payments over the life of the security. If at any time the covenants are not complied with, or if the IRS otherwise determines that the issuer did not comply with relevant tax requirements, interest payments from a security could become federally taxable, possibly retroactively to the date the security was issued, and the security could decline significantly in value. BFA will generally seek to obtain bonds that pay interest that is exempt from U.S. federal income taxes, the federal AMT and the federal Medicare contribution tax. The interest on any money market instruments or other cash equivalents held by a Fund may be subject to the federal AMT or the federal Medicare contribution tax.

Events occurring after the date of issuance of a municipal bond or after a Fund’s acquisition of a municipal bond may result in a determination that interest on that bond is includible in gross income for U.S. federal income tax, federal AMT or federal Medicare contribution tax purposes retroactively to its date of issuance. Such a determination may cause a portion of prior distributions by a Fund to its shareholders to be taxable to those shareholders in the year of receipt. U.S. federal or state changes in income, federal AMT or federal Medicare contribution tax rates or in the tax treatment of municipal bonds may make municipal bonds less attractive as investments and cause them to lose value. If the IRS determines an issuer of a municipal security has not complied with applicable tax requirements, interest from the security could become taxable, even retroactively, and the securities could decline significantly in value.

U.S. Treasury Obligations Risk. U.S. Treasury obligations may differ from other securities in their interest rates, maturities, times of issuance and other characteristics. Direct obligations of the U.S. Treasury have historically involved little risk of loss of principal if held to maturity, but the market value of such securities is not guaranteed and may fluctuate. Although U.S. Treasury obligations are backed by the full faith and credit of the United States, circumstances (e.g., reaching the legislative “debt ceiling”) could arise that could prevent the timely payment of interest or principal. An actual or threatened failure of the U.S. government to pay its obligations would result in losses to a Fund holding such securities as well as substantial negative consequences for the U.S. economy and the global financial system.

Changes in the U.S. government’s financial condition or credit rating may cause the value of U.S. Treasury obligations to decline. Because U.S. government debt obligations are often used as a benchmark for other borrowing arrangements, a downgrade to the credit rating of the U.S. could result in higher interest rates for a range of borrowers, cause disruptions in the international bond markets and have a substantial adverse effect on the U.S. and global economies.

A high national debt level may increase market pressures to meet government funding needs, which may drive debt costs higher and lead the government to issue additional debt, thereby increasing refinancing risk. A high national debt also raises concerns that the U.S. government will not be able to make principal or interest payments when they are due. If market participants determine that U.S. sovereign debt levels are unsustainable, the value of the U.S. dollar could decline, thus increasing inflationary pressures and constraining the U.S. government’s ability to implement effective countercyclical fiscal policy in economic downturns.

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).

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.

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

With respect to the iShares Short Duration Bond Active ETF and iShares Ultra Short Duration Bond Active ETF, BFA has entered into a sub-advisory agreement with BIL, an affiliate of BFA and an SEC-registered investment adviser and a commodity trading advisor located at Exchange Place One, 1 Semple Street, Edinburgh EH3 8BL, Scotland. BIL is primarily responsible for the execution of securities transactions outside the U.S. and Canada and may, from time to time, participate in the management of certain Fund assets, subject to the supervision and oversight of the Trust's Board of Trustees (the “Board”) and BFA. If BIL provides services relating to both portfolio management and trading, it receives from BFA an amount equal to 20% of BFA’s management fee (net of any applicable expenses). If BIL provides services related solely to trading, it receives from BFA an amount equal to 110% of the actual pre-tax costs incurred by BIL.

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.

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 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.

Fund	Management Fee
iShares Short Duration Bond Active ETF	0.25%1
iShares Short Maturity Municipal Bond Active ETF	0.25%

Fund	Management Fee
iShares Ultra Short Duration Bond Active ETF	0.08%

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, 2030. The contractual waiver may be terminated prior to February 28, 2030 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.

The Portfolio Managers are primarily responsible for the day-to-day management of the Funds listed below:

iShares Short Duration Bond Active ETF — Akiva Dickstein, Amanda Liu, Scott MacLellan, James Mauro, Siddharth Mehta and Sam Summers

iShares Short Maturity Municipal Bond Active ETF — Alicia De Lorenzo, Kristi Manidis, James Mauro and Christian Romaglino

iShares Ultra Short Duration Bond Active ETF — Bradford Glessner, Eric Hiatt and James Mauro

Alicia De Lorenzo has been employed by BFA or its affiliates since 2007, including as a portfolio manager since 2024. She is a Vice President of BlackRock, Inc.

Akiva Dickstein has been employed by BlackRock as a portfolio manager since 2009. He is a Managing Director of BlackRock, Inc.

Bradford Glessner, CFA has been employed by BFA or its affiliates as a portfolio manager since 2013. He is a Managing Director of BlackRock, Inc.

Eric Hiatt has been employed by BFA or its affiliates as a portfolio manager since 2012. He is a Managing Director of BlackRock, Inc.

Amanda Liu has been employed by BFA or its affiliates as a portfolio manager since 2015. She is a Director of BlackRock, Inc.

Scott MacLellan, CFA has been employed by BlackRock as a portfolio manager since 2012. He is a Managing Director of BlackRock, Inc.

Kristi Manidis has been employed by BlackRock as a portfolio manager since 2009. She is a Director of BlackRock, Inc.

James Mauro has been employed by BFA or its affiliates as a portfolio manager since 2011. He is a Managing Director of BlackRock, Inc.

Siddharth Mehta has been employed by BFA or its affiliates as a portfolio manager since 2005. He is a Managing Director of BlackRock, Inc.

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

Sam Summers has been employed by BFA or its affiliates as a portfolio manager since 2012. He is a 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 Short Duration Bond Active ETF*				✓
iShares Short Maturity Municipal Bond Active ETF			✓
iShares Ultra Short Duration Bond Active ETF*				✓

JPMorgan Chase Bank, N.A. serves as custodian for the Fund in connection with certain securities lending activities.

Conflicts of Interest

The investment activities of BFA and its affiliates (including BlackRock and its subsidiaries (collectively, the “Affiliates”)), and their respective 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.

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.

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 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.

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.

Tax-Exempt Dividends

For each Fund listed below, dividends paid by the Fund that are properly reported as tax-exempt interest dividends will not be subject to regular U.S. federal income tax. Each Fund intends to invest its assets in a manner such that dividend distributions to its shareholders generally will be exempt from U.S. federal income taxation, including the federal AMT, except for the iShares Short Maturity Municipal Bond Active ETF. Dividends paid by a Fund will be exempt from U.S. federal income tax (though not necessarily exempt from state and local taxation) to the extent of the Fund’s tax-exempt interest income as long as 50% or more of the value of the Fund’s assets at the end of each quarter is invested in state, municipal and other bonds whose interest is excluded from gross income for U.S. federal income tax purposes and as long as the Fund properly reports such dividends as tax-exempt interest dividends.

Exempt interest dividends from interest earned on the municipal securities of a state or its political subdivisions may be exempt from income tax in that state. However, income from the municipal securities of one state generally will not qualify for tax-free treatment in other states.
iShares Short Maturity Municipal Bond Active ETF

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).

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 Short Duration Bond Active ETF			✓
iShares Short Maturity Municipal Bond Active ETF			✓
iShares Ultra Short Duration Bond Active 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.

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.

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).

For a share outstanding throughout each period:

	iShares Short Duration Bond Active 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	$50.76	$49.92	$49.16	$50.07	$50.15
Net investment income(a)	2.32	2.52	2.00	0.58	0.38
Net realized and unrealized gain (loss)(b)	0.49	0.95	0.73	(0.95 )	(0.03 )
Net increase (decrease) from investment operations	2.81	3.47	2.73	(0.37 )	0.35
Distributions from net investment income(c)	(2.35 )	(2.63 )	(1.97 )	(0.54 )	(0.43 )
Net asset value, end of year	$51.22	$50.76	$49.92	$49.16	$50.07
Total Return(d)
Based on net asset value	5.70 %	7.10 %	5.67 %	(0.75 )%	0.70 %
Ratios to Average Net Assets(e)
Total expenses	0.25 %	0.25 %	0.25 %	0.25 %	0.25 %
Total expenses after fees waived	0.25 %	0.25 %	0.25 %	0.25 %	0.25 %
Net investment income	4.56 %	4.99 %	4.03 %	1.17 %	0.76 %
Supplemental Data
Net assets, end of year (000)	$3,767,328	$2,915,953	$3,124,955	$4,230,166	$4,854,200
Portfolio turnover rate(f)	163 %	164 %	40 %	44 %	55 %
(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 timing 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.

For a share outstanding throughout each period:

	iShares Short Maturity Municipal Bond Active 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	$50.17	$49.81	$49.62	$50.11	$50.19
Net investment income(a)	1.54	1.75	1.51	0.37	0.17
Net realized and unrealized gain (loss)(b)	0.22	0.36	0.11	(0.62 )	(0.07 )
Net increase (decrease) from investment operations	1.76	2.11	1.62	(0.25 )	0.10
Distributions from net investment income(c)	(1.53 )	(1.75 )	(1.43 )	(0.24 )	(0.18 )
Net asset value, end of year	$50.40	$50.17	$49.81	$49.62	$50.11
Total Return(d)
Based on net asset value	3.58 %	4.30 %	3.32 %	(0.51 )%	0.19 %
Ratios to Average Net Assets(e)
Total expenses	0.26 %	0.25 %	0.25 %	0.25 %	0.25 %
Net investment income	3.07 %	3.49 %	3.04 %	0.75 %	0.34 %
Supplemental Data
Net assets, end of year (000)	$1,270,173	$682,283	$605,203	$520,960	$293,169
Portfolio turnover rate(f)	37 %	91 %	195 %	98 %	52 %

(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 timing 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.

For a share outstanding throughout each period:

	iShares Ultra Short Duration Bond Active 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	$50.68	$50.40	$49.99	$50.45	$50.54
Net investment income(a)	2.37	2.64	2.21	0.61	0.22
Net realized and unrealized gain (loss)(b)	0.06	0.32	0.34	(0.60 )	(0.07 )
Net increase from investment operations	2.43	2.96	2.55	0.01	0.15
Distributions from net investment income(c)	(2.38 )	(2.68 )	(2.14 )	(0.47 )	(0.24 )
Net asset value, end of year	$50.73	$50.68	$50.40	$49.99	$50.45
Total Return(d)
Based on net asset value	4.93 %	6.03 %	5.22 %	0.03 %	0.29 %
Ratios to Average Net Assets(e)
Total expenses	0.08 %	0.08 %	0.08 %	0.08 %	0.08 %
Net investment income	4.69 %	5.24 %	4.41 %	1.22 %	0.44 %
Supplemental Data
Net assets, end of year (000)	$6,506,182	$5,521,605	$6,232,253	$7,053,541	$5,806,662
Portfolio turnover rate(f)	49 %	59 %	41 %	27 %	47 %
(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 timing 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.

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:	[email protected]
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: [email protected].

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.

Investment Company Act File No.: 811-22649

IS-P- 1031A-0226

	One Year	Five Years	Ten Years
(Inception Date: 9/25/2013)
Return Before Taxes	5.95%	3.76%	2.83%
Return After Taxes on Distributions	4.00%	2.36%	1.75%
Return After Taxes on Distributions and Sale of Fund Shares	3.49%	2.27%	1.70%
Bloomberg U.S. Universal Index (Returns do not reflect deductions for fees, expenses or taxes)	7.58%	0.06%	2.44%
Bloomberg U.S. 1-3 Year Government/Credit Bond Index1 (Returns do not reflect deductions for fees, expenses or taxes)	5.35%	1.97%	2.09%

	FEBRUARY 27, 2026