Form 497

Annual Fund Operating Expenses
(ongoing expenses that you pay each year as a
percentage of the value of your investments)^{1, 2}

Management

Fees

Distribution and
Service (12b‑1)
Fees

Other

Expenses³

Total Annual

Fund
Operating

Expenses

0001193125-24-082207.txt : 20240401 0001193125-24-082207.hdr.sgml : 20240401 20240329175701 ACCESSION NUMBER: 0001193125-24-082207 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 14 FILED AS OF DATE: 20240401 DATE AS OF CHANGE: 20240329 EFFECTIVENESS DATE: 20240401 FILER: COMPANY DATA: COMPANY CONFORMED NAME: iSHARES TRUST CENTRAL INDEX KEY: 0001100663 ORGANIZATION NAME: IRS NUMBER: 943351276 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 333-92935 FILM NUMBER: 24805023 BUSINESS ADDRESS: STREET 1: 400 HOWARD STREET CITY: SAN FRANCISCO STATE: CA ZIP: 94105 BUSINESS PHONE: (415) 670-2000 MAIL ADDRESS: STREET 1: 400 HOWARD STREET CITY: SAN FRANCISCO STATE: CA ZIP: 94105 FORMER COMPANY: FORMER CONFORMED NAME: ISHARES TRUST DATE OF NAME CHANGE: 19991213

0001100663 S000066849 iShares Factors US Growth Style ETF

C000215209 iShares Factors US Growth Style ETF STLG

497 1 d817746d497.htm FORM 497 Form 497

Important Notice Regarding Change in Investment Policy and Name

iShares^®

iShares Trust

Supplement dated April 1, 2024 (the “Supplement”)

to the currently effective Summary Prospectus, Prospectus, and Statement of Additional Information (the “SAI”) for the iShares Factors US Growth Style ETF (STLG) (the “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, the Summary Prospectus, Prospectus and SAI for the Fund.

The Board of Trustees has approved the following changes for the Fund that are expected to take effect on or around June 3, 2024, except for the management fee change, which will take effect on April 1, 2024:



	Current	New

Fund Name	iShares Factors US Growth Style ETF	iShares MSCI USA Quality GARP ETF

Ticker	STLG	GARP

Underlying Index	Russell US Large Cap Factors Growth Style Index	MSCI USA Quality GARP Select Index

Investment Objective	The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization stocks with favorable exposure to target style factors subject to constraints.	The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization growth stocks exhibiting favorable value and quality characteristics.

Management Fee	0.25%	0.15%

Unless otherwise noted herein, all references in the Summary Prospectus, Prospectus, and SAI to “iShares Factors US Growth Style ETF,” “STLG” and “Russell US Large Cap Factors Growth Style Index” are replaced with the Fund’s new name, new ticker, or new Underlying Index, respectively.

Changes to the Fund’s “Fees and Expenses”

The Annual Fund Operating Expenses table and Example on page S‑1 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

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

The expense information in the table has been restated to reflect current fees.

The amount rounded to 0.00%.

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:

Change to the Fund’s “Principal Investment Strategies”

The first four paragraphs of the section entitled “Principal Investment Strategies” on pages S‑2 and S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

The Fund seeks to track the investment results of the MSCI USA Quality GARP Select Index (the “Underlying Index”), which was developed by MSCI Inc. (the “Index Provider” or “MSCI”). The Underlying Index is a subset of the MSCI USA Index (the “Parent Index”), which is designed to measure the performance of the large- and mid‑capitalization segments of the U.S. equity market, as defined by the Index Provider. The Underlying Index’s “growth at a reasonable price” or “GARP” strategy seeks to measure the performance of securities in the Parent Index that exhibit stronger growth characteristics, with weighting based on relatively favorable value and quality characteristics.

The Index Provider begins by calculating a “growth score” for each security in the Parent Index using five metrics: long-term forward earnings per share (“EPS”) growth rate; short-term forward EPS growth rate; current internal growth rate (based on return on equity and dividend payout metrics); long-term historical EPS

growth trend; and long-term historical sales per share growth trend. The Index Provider then selects securities with higher growth scores until approximately 50% of the aggregate market capitalization of the Parent Index is reached, subject to certain constraints.

The process for weighting the selected securities in the Underlying Index involves calculating a “tilt score” for each security. Two components of the tilt score are value and quality scores, which are calculated for each security relative to its peers within the corresponding Global Industry Classification Standards sector. The value score is based on three metrics: price‑to‑book value, forward price‑to‑earnings ratio, and the ratio of enterprise value to cash flow from operations. The quality score is based on three metrics: return on equity, debt‑to‑equity ratio, and earnings variability.

A security’s tilt score is based on the following:

∎

whether the security is in the top 50% or bottom 50% of the cumulative weight of the selected securities calculated using free float-adjusted market capitalization;

∎

whether the security’s value score is in the top 50% or bottom 50% of the scores of the selected securities; and

∎

the particular quartile in which the security’s quality score falls.

Tilt scores are generally lower for securities with larger market capitalizations and higher for securities with more favorable value and quality scores. To determine a security’s weight in the Underlying Index, its tilt score is multiplied by the security’s market capitalization weight in the Parent Index. The maximum weight of any individual issuer is 5%. The Index Provider also applies constraints on turnover and on sector weights after the tilt score is applied, relative to the sector weights of the Underlying Index before the tilt score is applied (i.e., with sector weights based on the free float-adjusted market capitalization of the selected securities). The Underlying Index is rebalanced on a quarterly basis.

As of March 1, 2024, the Underlying Index consisted of 170 component securities. As of March 1, 2024, a significant portion of the Underlying Index is represented by securities of companies in the information technology and consumer discretionary industries or sectors. The components of the Underlying Index are likely to change over time.

Paragraphs 8‑10 of the section entitled “Principal Investment Strategies” on page S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

The Fund generally will invest at least 80% of its assets in the component securities of its Underlying Index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. Cash and cash equivalent investments associated with a derivative position will be treated as part of that position for the purposes of

calculating the percentage of investments included in the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

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

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

Changes to the Fund’s Principal Risks

The section entitled “Style Factors Risk” on page S‑7 of the Summary Prospectus and the Prospectus and page 10 of the Prospectus is deleted in its entirety.

The following sections are added to the section entitled “Summary of Principal Risks” in the Summary Prospectus and the Prospectus:

Quality Stocks Risk. Stocks included in the Underlying Index are deemed by the Index Provider to be quality stocks, but there is no guarantee that the past performance of these stocks will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock’s quality and performance, and the impact of these factors on a stock or its price can be difficult to predict.

The following sections are added to the section entitled “A Further Discussion of Principal Risks” in the Prospectus:

Quality Stocks Risk. The Fund invests in stocks that are deemed by the Index Provider to be of high quality based on a number of factors, but there is no guarantee that the past performance of these stocks will continue. The Index Provider may be unsuccessful in creating an index that reflects the quality of individual stocks. Companies that issue these stocks may not be able to sustain consistently high returns on equity, earnings and growth year after year and may need to borrow money or issue debt despite their prior history. Earnings, growth and other measures of a stock’s quality can be adversely affected by market, regulatory, political, environmental and other factors. The price of a stock also may be affected by factors other than those factors considered by the Index Provider. The degree to which these factors affect a stock’s performance can be difficult to predict.

Value Securities Risk. Value securities are those issued by companies that may be perceived as undervalued. Such securities may decline in price or fail to appreciate for long periods of time, and they may never realize their full potential value because the market fails to recognize the stock’s intrinsic worth. Value securities may underperform growth securities and other types of assets as well as the overall stock market. Although value securities have generally performed better than non‑value securities during periods of economic recovery, there is no assurance that they will continue to do so. Value securities may go in and out of favor over time, which could affect the performance of a Fund with such holdings.

Changes to the Fund’s “Management”

The third paragraph of the section entitled “Investment Adviser” on page 15 of the Prospectus is deleted in its entirety and replaced with the following:

Effective April 1, 2024, for its investment advisory services to the Fund, BFA is paid a management fee from the Fund, as a percentage of the Fund’s average daily net assets, at the annual rate of 0.15%. Prior to April 1, 2024 and for the fiscal year ended March 31, 2023, BFA was paid a management fee from the Fund, as a percentage of the Fund’s average daily net assets, at the annual rate of 0.25%. BFA may from time to time voluntarily waive and/or reimburse fees or expenses in order to limit 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.

Change to the Fund’s “Index Provider”

The first paragraph of the section entitled “Index Provider” on page 28 of the Prospectus is deleted in its entirety and replaced with the following:

MSCI is a provider of investment decision support tools to investors globally. MSCI products and services include indices, portfolio risk and performance analytics, and governance tools. MSCI is not affiliated with the Trust, BFA, the Distributor or any of their respective affiliates.

Change to the Fund’s “Disclaimers”

The section entitled “Disclaimers” on pages 28‑29 of the Prospectus is deleted in its entirety and replaced with the following:

The Fund is not sponsored, endorsed, sold or promoted by MSCI or any affiliate of MSCI. Neither MSCI nor any other party makes any representation or warranty, express or implied, to the owners of shares of the Fund or any member of the public regarding the advisability of investing in funds generally or in the Fund particularly or the ability of the Underlying Index to track general market performance. MSCI is the licensor of certain trademarks, service marks and trade names of MSCI and of the Underlying Index, which is determined, composed and calculated by MSCI without regard to the issuer of the Fund’s securities or the Fund. MSCI has no obligation to take the needs of the issuer of the Fund’s securities or the owners of shares of the Fund into consideration in determining, composing or calculating the Underlying Index. MSCI is not responsible for and has not participated in the determination of the timing of, prices at, or quantities of the

Fund’s shares to be issued or in the determination or calculation of the equation by which the Fund’s shares are redeemable for cash. Neither MSCI nor any other party has any obligation or liability to owners of shares of the Fund in connection with the administration, marketing or trading of the Fund’s shares.

ALTHOUGH MSCI SHALL OBTAIN INFORMATION FOR INCLUSION IN OR FOR USE IN THE CALCULATION OF THE INDEXES FROM SOURCES WHICH MSCI CONSIDERS RELIABLE, NEITHER MSCI NOR ANY OTHER PARTY GUARANTEES THE ACCURACY AND/OR THE COMPLETENESS OF THE INDEXES OR ANY DATA INCLUDED THEREIN. NEITHER MSCI NOR ANY OTHER PARTY MAKES ANY WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY LICENSEE, LICENSEE’S CUSTOMERS AND COUNTERPARTIES, OWNERS OF SHARES OF THE FUND, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE INDEXES OR ANY DATA INCLUDED THEREIN IN CONNECTION WITH THE RIGHTS LICENSED HEREUNDER OR FOR ANY OTHER USE. NEITHER MSCI NOR ANY OTHER PARTY MAKES ANY EXPRESS OR IMPLIED WARRANTIES, AND MSCI HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE INDEXES OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL MSCI OR ANY OTHER PARTY HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL OR ANY OTHER DAMAGES (INCLUDING LOST PROFITS) EVEN IF NOTIFIED OF THE POSSIBILITY OF SUCH DAMAGES.

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

Change to the Fund’s “Construction and Maintenance of the Underlying Indexes”

The section entitled “Russell US Large Cap Factors Growth Style Index” on pages 47‑48 of the SAI is deleted in its entirety. The following is added to the section entitled “Construction and Maintenance of the Underlying Indexes”:

The MSCI Indexes

The MSCI indexes were founded in 1969 by Capital International S.A. as international performance benchmarks constructed to facilitate comparison of world markets. The MSCI single country standard equity indexes have covered the world’s developed markets since 1969 and in 1987 MSCI Inc. commenced coverage of emerging markets.

Local stock exchanges traditionally calculated their own indexes, which were generally not comparable with one another due to differences in the representation

of the local market, mathematical formulas, base dates and methods of adjusting for capital changes. MSCI, however, applies the same calculation methodology to all markets for all single country standard equity indexes, both developed and emerging.

MSCI Global Investable Market Indexes

MSCI’s Global Investable Market Indexes (the “MSCI GIMI”) provide coverage and non‑overlapping market segmentation by market capitalization size and by style. The MSCI GIMI intend to target approximately 99% coverage of the free float-adjusted market capitalization in each market of large-, mid‑ and small‑cap securities.

Defining the Equity Universe. MSCI begins with securities listed in countries in the MSCI GIMI. All listed equity securities and listed securities that exhibit characteristics of equity securities, except mutual funds, ETFs, equity derivatives, limited partnerships and most investment trusts, are eligible for inclusion in the equity universe. REITs in some countries and certain income trusts in Canada are also eligible for inclusion. Each company and its securities (i.e., share classes) are classified in only one country.

Determining Market Capitalization Size Segments for Each Market. In order to create size components that can be meaningfully aggregated into composites, individual market size segments balance the following two objectives:

∎

Achieving global size integrity by ensuring that companies of comparable and relevant sizes are included in a given size segment across all markets in a composite index; and

∎

Achieving consistent market coverage by ensuring that each market’s size segment is represented in its proportional weight in the composite universe.

Applying Final Size Segment Investability Requirements. In order to enhance replicability of the indexes, MSCI applies additional size segment investability requirements, which include minimum free float-adjusted market capitalization, minimum liquidity, minimum foreign limits and minimum length of trading.

Weighting. All indexes of the MSCI GIMI are free float weighted, i.e., companies are included in the indexes at the value of their free public float (free float multiplied by security price).

Free Float. MSCI defines the free float of a security as the proportion of shares outstanding that are deemed to be available for purchase in the public equity markets by international investors. In practice, limitations on free float available to international investors include: (i) strategic and other shareholdings not considered part of available free float; and (ii) limits on share ownership for foreigners.

MSCI calculates the free float-adjusted market capitalization of each security in the equity index universe by (i) defining and estimating the free float available to foreign investors; (ii) assigning a free float-adjustment factor to each security; and (iii) calculating the free float-adjusted market capitalization of each security.

Under MSCI’s free float-adjustment methodology, a constituent’s inclusion factor is equal to its estimated free float, rounded up to the closest 5% for constituents with

free float equal to or exceeding 15%. For example, a constituent security with a free float of 23.2% will be included in the index at 25% of its market capitalization. For securities with a free float of less than 15%, the estimated free float is adjusted to the nearest 1%.

Price and Exchange Rates

Prices. The prices used to calculate all MSCI indexes are the official exchange closing prices or those figures accepted as such. MSCI reserves the right to use an alternative pricing source on any given day.

Exchange Rates. MSCI uses the World Markets/Reuters Closing Spot Rates taken at 4:00 p.m. London time. In case World Markets/Reuters does not provide rates for specific markets on given days (for example, Christmas Day and New Year’s Day), the previous business day’s rates are normally used. MSCI independently monitors the exchange rates on all its indexes. MSCI may under exceptional circumstances elect to use alternative sources of exchange rates if the World Markets/Reuters rates are not available, or if MSCI determines that the World Markets/Reuters rates are not reflective of market circumstances for a given currency on a particular day. In such circumstances, an announcement would be sent to clients with the related information. If appropriate, MSCI may conduct a consultation with the investment community to gather feedback on the most relevant exchange rate.

Changes to the Indexes. The MSCI GIMI are maintained with the objective of reflecting, on a timely basis, the evolution of the underlying equity markets. In maintaining the MSCI indexes, emphasis is also placed on continuity, replicability and minimizing turnover in the indexes. Maintaining the MSCI indexes involves many aspects, including: (i) additions to, and deletions from, the indexes; (ii) changes in number of shares; and (iii) changes in inclusion factors as a result of updated free float estimates.

Index maintenance can be described by three broad categories of changes:

∎

Semi-Annual Index Reviews (“SAIRs”), conducted on a fixed semi-annual timetable that systematically reassess the various dimensions of the equity universe for all markets;

∎

Quarterly Index Reviews (“QIRs”), aimed at promptly reflecting other significant market events; and

∎

Ongoing event-related changes, such as mergers, acquisitions, spin-offs, bankruptcies, reorganizations and other similar corporate events, which generally are implemented in the indexes as they occur.

Potential changes in the status of countries (stand-alone, frontier, emerging and developed) follow their own implementation time tables. In addition, reviews of company involvement in ESG controversies, when applicable, may differ by index and severity of the ESG controversy as determined by MSCI.

MSCI conducts SAIRs generally as of the close of the last business day of May and November. During the SAIRs, MSCI updates the investable equity universe and reassesses size segmentation investability requirements. MSCI also conducts QIRs

generally as of the close of the last business day of February and August. During the QIRs, MSCI reflects changes in the index that were not captured at the time of their actual occurrence, but are significant enough to be included before the next SAIR. The results of the SAIR and QIR are generally announced at least ten business days in advance of implementation.

Creation of Sector and Industry Indexes using the Global Industry Classification Standard (GICS^®)

All securities in the Global Investable Equity Universe are assigned to the industry that best describes their business activities using the GICS. The GICS classification consists of sectors, industry groups, industries and sub‑industries. Each company is assigned to one unique sub‑industry according to its principal business activity (generally defined as the business activity that generates 60% or more of the company’s revenues). Narrower indexes may be derived based on industry classification and may contain securities belonging to specific sectors, industry groups, industries, sub‑industries or a combination thereof.

MSCI USA Quality GARP Select Index

Number of Components: approximately 170

Index Description: The MSCI USA Quality GARP Select Index is a subset of the MSCI USA Index (the “Parent Index”), which is designed to measure the performance of the large- and mid‑capitalization segments of the U.S. equity market, as defined by the Index Provider. The Underlying Index’s “growth at a reasonable price” or “GARP” strategy seeks to measure the performance of securities in the Parent Index that exhibit stronger growth characteristics, with weighting based on relatively favorable value and quality characteristics.

Index Methodology. The Index Provider begins by calculating a “growth score” for each security in the Parent Index using five metrics: long-term forward earnings per share (“EPS”) growth rate; short-term forward EPS growth rate; current internal growth rate (based on return on equity and dividend payout metrics); long-term historical EPS growth trend; and long-term historical sales per share growth trend. The values of the metrics are standardized to reduce the effect of outliers on the calculation of the growth scores. The Index Provider then selects securities with higher growth scores until approximately 50% of the aggregate market capitalization of the Parent Index is reached, subject to certain constraints.

The process for weighting the selected securities in the Underlying Index involves calculating a “tilt score” for each security. Two components of the tilt score are value and quality scores, which are calculated for each security relative to its peers within the corresponding GICS sector. The value score is based on three metrics: price‑to‑book value, forward price‑to‑earnings ratio, and the ratio of enterprise value to cash flow from operations. The quality score is based on three metrics: return on equity, debt‑to‑equity ratio, and earnings variability. The values of the metrics are standardized to reduce the effect of outliers on the calculation of the value and quality scores.

A security’s tilt score is based on the following:

∎

whether the security is in the top 50% or bottom 50% of the cumulative weight of the selected securities calculated using free float-adjusted market capitalization;

∎

whether the security’s value score is in the top 50% or bottom 50% of the scores of the selected securities; and

∎

the particular quartile in which the security’s quality score falls.

Tilt scores are generally lower for securities with larger market capitalizations and higher for securities with more favorable value and quality scores. To determine a security’s weight in the Underlying Index, its tilt score is multiplied by the security’s market capitalization weight in the Parent Index. The maximum weight of any individual issuer is 5%. The sector weights after the tilt score is applied will not deviate more than +/- 5% from the sector weights of the Underlying Index before the tilt score is applied (i.e., with sector weights based on the free float-adjusted market capitalization of the selected securities) at the time of rebalancing. The Index Provider also applies constraints to reduce turnover. The Underlying Index is rebalanced on a quarterly basis.

Changes in the Fund’s “Investment Advisory, Administrative and Distribution Services”

In the management fee table on pages 109‑110 of the SAI, the following footnote is added to the Fund:

Effective April 1, 2024, the management fee for the iShares MSCI USA Quality GARP ETF is 0.15%. Prior to April 1, 2024 and for the fiscal year ended March 31, 2023, the management fee for the iShares MSCI USA Quality GARP ETF was 0.25%.

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

iShares^® is a registered trademark of BlackRock Fund Advisors and its affiliates.

IS‑A‑SUPP‑STLG‑repu‑0424

PLEASE RETAIN THIS SUPPLEMENT

FOR FUTURE REFERENCE

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Important Notice Regarding Change in Investment Policy and Name

iShares^®

iShares Trust

Supplement dated April 1, 2024 (the “Supplement”)

to the currently effective Summary Prospectus, Prospectus, and Statement of Additional Information (the “SAI”) for the iShares Factors US Growth Style ETF (STLG) (the “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, the Summary Prospectus, Prospectus and SAI for the Fund.



	Current	New

Fund Name	iShares Factors US Growth Style ETF	iShares MSCI USA Quality GARP ETF

Ticker	STLG	GARP

Underlying Index	Russell US Large Cap Factors Growth Style Index	MSCI USA Quality GARP Select Index

Investment Objective	The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization stocks with favorable exposure to target style factors subject to constraints.	The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization growth stocks exhibiting favorable value and quality characteristics.

Management Fee	0.25%	0.15%

Changes to the Fund’s “Fees and Expenses”

The Annual Fund Operating Expenses table and Example on page S‑1 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

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

The expense information in the table has been restated to reflect current fees.

The amount rounded to 0.00%.

Change to the Fund’s “Principal Investment Strategies”

A security’s tilt score is based on the following:

∎

whether the security is in the top 50% or bottom 50% of the cumulative weight of the selected securities calculated using free float-adjusted market capitalization;

∎

whether the security’s value score is in the top 50% or bottom 50% of the scores of the selected securities; and

∎

the particular quartile in which the security’s quality score falls.

Paragraphs 8‑10 of the section entitled “Principal Investment Strategies” on page S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

calculating the percentage of investments included in the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

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

Changes to the Fund’s Principal Risks

The section entitled “Style Factors Risk” on page S‑7 of the Summary Prospectus and the Prospectus and page 10 of the Prospectus is deleted in its entirety.

The following sections are added to the section entitled “Summary of Principal Risks” in the Summary Prospectus and the Prospectus:

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

iShares^® is a registered trademark of BlackRock Fund Advisors and its affiliates.

iShares MSCI USA Quality GARP ETF

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Important Notice Regarding Change in Investment Policy and Name

iShares^®

iShares Trust

Supplement dated April 1, 2024 (the “Supplement”)

to the currently effective Summary Prospectus, Prospectus, and Statement of Additional Information (the “SAI”) for the iShares Factors US Growth Style ETF (STLG) (the “Fund”)

The information in this Supplement updates information in, and should be read in conjunction with, the Summary Prospectus, Prospectus and SAI for the Fund.



	Current	New

Fund Name	iShares Factors US Growth Style ETF	iShares MSCI USA Quality GARP ETF

Ticker	STLG	GARP

Underlying Index	Russell US Large Cap Factors Growth Style Index	MSCI USA Quality GARP Select Index

Investment Objective	The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization stocks with favorable exposure to target style factors subject to constraints.	The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization growth stocks exhibiting favorable value and quality characteristics.

Management Fee	0.25%	0.15%

Changes to the Fund’s “Fees and Expenses”

The Annual Fund Operating Expenses table and Example on page S‑1 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

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

The expense information in the table has been restated to reflect current fees.

The amount rounded to 0.00%.

Change to the Fund’s “Principal Investment Strategies”

A security’s tilt score is based on the following:

∎

whether the security is in the top 50% or bottom 50% of the cumulative weight of the selected securities calculated using free float-adjusted market capitalization;

∎

whether the security’s value score is in the top 50% or bottom 50% of the scores of the selected securities; and

∎

the particular quartile in which the security’s quality score falls.

Paragraphs 8‑10 of the section entitled “Principal Investment Strategies” on page S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following:

calculating the percentage of investments included in the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.

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

Changes to the Fund’s Principal Risks

The section entitled “Style Factors Risk” on page S‑7 of the Summary Prospectus and the Prospectus and page 10 of the Prospectus is deleted in its entirety.

The following sections are added to the section entitled “Summary of Principal Risks” in the Summary Prospectus and the Prospectus:

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

iShares^® is a registered trademark of BlackRock Fund Advisors and its affiliates.

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A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). 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(B) If the Fund is a Money Market Fund that is a government Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(16), or a retail Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(25), and that is subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter (or is not subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter pursuant to \u00a7 270.2a\u20137(c)(2)(iii) of this chapter, but has chosen to rely on the ability to impose liquidity fees and suspend redemptions consistent with the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii)), include the following statement: You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. (C) If the Fund is a Money Market Fund that is a government Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(16), that is not subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter pursuant to \u00a7 270.2a\u20137(c)(2)(iii) of this chapter, and that has not chosen to rely on the ability to impose liquidity fees and suspend redemptions consistent with the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii), include the following statement: You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. Instruction. If an affiliated person, promoter, or principal underwriter of the Fund, or an affiliated person of such a person, has contractually committed to provide financial support to the Fund, and the term of the agreement will extend for at least one year following the effective date of the Fund's registration statement, the statement specified in Item 4(b)(1)(ii)(A), Item 4(b)(1)(ii)(B), or Item 4(b)(1)(ii)(C) may omit the last sentence (\"The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.\"). For purposes of this Instruction, the term \"financial support\" includes any capital contribution, purchase of a security from the Fund in reliance on \u00a7 270.17a\u20139, purchase of any defaulted or devalued security at par, execution of letter of credit or letter of indemnity, capital support agreement (whether or not the Fund ultimately received support), performance guarantee, or any other similar action reasonably intended to increase or stabilize the value or liquidity of the fund's portfolio; however, the term \"financial support\" excludes any routine waiver of fees or reimbursement of fund expenses, routine inter-fund lending, routine inter-fund purchases of fund shares, or any action that would qualify as financial support as defined above, that the board of directors has otherwise determined not to be reasonably intended to increase or stabilize the value or liquidity of the fund's portfolio. 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style="font-size:75%;vertical-align:top"> </sup> </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">iShares Trust</div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Supplement dated April 1, 2024 (the “Supplement”) </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">to the currently effective Summary Prospectus, Prospectus, and Statement of Additional Information (the “SAI”) for the iShares Factors US Growth Style ETF (STLG) (the “Fund”) </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic">The information in this Supplement updates information in, and should be read in conjunction with, the Summary Prospectus, Prospectus and SAI for the Fund. </span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Board of Trustees has approved the following changes for the Fund that are expected to take effect on or around June 3, 2024, except for the management fee change, which will take effect on April 1, 2024: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:99%;border:0px"> <tr> <td style="width:16%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:41%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:41%;"></td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; BORDER-TOP:0.75pt solid #000000; padding-left:8pt;height:1.5pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-TOP:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:1.5pt;"> </td> <td colspan="2" style="BORDER-TOP:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:1.5pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;"><span style="font-weight:bold">Current</span></td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"><span style="font-weight:bold">New</span></td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Fund Name</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">iShares Factors US Growth Style ETF</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">iShares MSCI USA Quality GARP ETF</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Ticker</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">STLG</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">GARP</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Underlying Index</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">Russell US Large Cap Factors Growth Style Index</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">MSCI USA Quality GARP Select Index</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Investment Objective</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization stocks with favorable exposure to target style factors subject to constraints.</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization growth stocks exhibiting favorable value and quality characteristics.</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Management Fee</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">0.25%</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">0.15%</div> </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">Unless otherwise noted herein, all references in the Summary Prospectus, Prospectus, and SAI to “iShares Factors US Growth Style ETF,” “STLG” and “Russell US Large Cap Factors Growth Style Index” are replaced with the Fund’s new name, new ticker, or new Underlying Index, respectively. </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic"><span style="text-decoration:underline">Changes to the Fund’s “Fees and Expenses” </span></span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The Annual Fund Operating Expenses table and Example on page S‑1 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td></td> <td style="vertical-align:bottom;width:25%;"></td> <td></td> <td style="vertical-align:bottom;width:25%;"></td> <td></td> <td style="vertical-align:bottom;width:25%;"></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td colspan="7" style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;white-space:nowrap;"><span style="font-weight:bold">Annual Fund Operating Expenses</span><br/><span style="font-weight:bold">(ongoing expenses that you pay each year as a</span><br/><span style="font-weight:bold">percentage of the value of your investments)<sup style="font-size:75%;vertical-align:top">1, 2</sup></span></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="vertical-align:bottom;white-space:nowrap;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Management</div> <div style="margin-top:0pt;margin-bottom:1pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Fees</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Distribution and<br/>Service (12b‑1)<br/>Fees</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Other</div> <div style="margin-top:0pt;margin-bottom:1pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Expenses<sup style="font-size:75%;vertical-align:top">3</sup></div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Total Annual</div> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Fund<br/>Operating</div> <div style="margin-top:0pt;margin-bottom:1pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Expenses</div> </td> </tr> <tr style="font-size:1pt"> <td style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;text-align: center;">0.15%</td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;">None</td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;">0.00%</td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;">0.15%</td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;">Operating expenses paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any. </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;">The expense information in the table has been restated to reflect current fees. </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">3</sup> </td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;">The amount rounded to 0.00%. </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold">Example. </span>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: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:25%;"></td> <td style="vertical-align:bottom;width:1%;"></td> <td style="width:23%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td style="width:25%;"></td> <td style="vertical-align:bottom;width:1%;"></td> <td style="width:24%;"></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;white-space:nowrap;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">1 Year</div> </td> <td style="vertical-align:bottom;"> </td> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">3 Years</div> </td> <td style="vertical-align:bottom;"> </td> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">5 Years</div> </td> <td style="vertical-align:bottom;"> </td> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">10 Years</div> </td> </tr> <tr style="font-size:1pt"> <td style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="vertical-align:top;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$15</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$48</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$85</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$192</div> </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic"><span style="text-decoration:underline">Change to the Fund’s “Principal Investment Strategies” </span></span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The first four paragraphs of the section entitled “Principal Investment Strategies” on pages S‑2 and S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Fund seeks to track the investment results of the MSCI USA Quality GARP Select Index (the “Underlying Index”), which was developed by MSCI Inc. (the “Index Provider” or “MSCI”). The Underlying Index is a subset of the MSCI USA Index (the “Parent Index”), which is designed to measure the performance of the large- and mid‑capitalization segments of the U.S. equity market, as defined by the Index Provider. The Underlying Index’s “growth at a reasonable price” or “GARP” strategy seeks to measure the performance of securities in the Parent Index that exhibit stronger growth characteristics, with weighting based on relatively favorable value and quality characteristics. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Index Provider begins by calculating a “growth score” for each security in the Parent Index using five metrics: long-term forward earnings per share (“EPS”) growth rate; short-term forward EPS growth rate; current internal growth rate (based on return on equity and dividend payout metrics); long-term historical EPS </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"> growth trend; and long-term historical sales per share growth trend. The Index Provider then selects securities with higher growth scores until approximately 50% of the aggregate market capitalization of the Parent Index is reached, subject to certain constraints. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The process for weighting the selected securities in the Underlying Index involves calculating a “tilt score” for each security. Two components of the tilt score are value and quality scores, which are calculated for each security relative to its peers within the corresponding Global Industry Classification Standards sector. The value score is based on three metrics: price‑to‑book value, forward price‑to‑earnings ratio, and the ratio of enterprise value to cash flow from operations. The quality score is based on three metrics: return on equity, debt‑to‑equity ratio, and earnings variability. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">A security’s tilt score is based on the following: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;"> </td> <td style="width:2%;vertical-align:top;text-align: left;"><span style="font-family:times new roman;font-size:11.5pt">∎</span></td> <td style="width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;">whether the security is in the top 50% or bottom 50% of the cumulative weight of the selected securities calculated using free float-adjusted market capitalization; </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;"> </td> <td style="width:2%;vertical-align:top;text-align: left;"><span style="font-family:times new roman;font-size:11.5pt">∎</span></td> <td style="width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;">whether the security’s value score is in the top 50% or bottom 50% of the scores of the selected securities; and </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;"> </td> <td style="width:2%;vertical-align:top;text-align: left;"><span style="font-family:times new roman;font-size:11.5pt">∎</span></td> <td style="width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;">the particular quartile in which the security’s quality score falls. </div> </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">Tilt scores are generally lower for securities with larger market capitalizations and higher for securities with more favorable value and quality scores. To determine a security’s weight in the Underlying Index, its tilt score is multiplied by the security’s market capitalization weight in the Parent Index. The maximum weight of any individual issuer is 5%. The Index Provider also applies constraints on turnover and on sector weights after the tilt score is applied, relative to the sector weights of the Underlying Index before the tilt score is applied (i.e., with sector weights based on the free float-adjusted market capitalization of the selected securities). The Underlying Index is rebalanced on a quarterly basis. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">As of March 1, 2024, the Underlying Index consisted of 170 component securities. As of March 1, 2024, a significant portion of the Underlying Index is represented by securities of companies in the information technology and consumer discretionary industries or sectors. The components of the Underlying Index are likely to change over time. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">Paragraphs 8‑10 of the section entitled “Principal Investment Strategies” on page S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Fund generally will invest at least 80% of its assets in the component securities of its Underlying Index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. Cash and cash equivalent investments associated with a derivative position will be treated as part of that position for the purposes of </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"> calculating the percentage of investments included in the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Fund may lend securities representing up to one‑third of the value of the Fund’s total assets (including the value of any collateral received). </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Underlying Index is sponsored by MSCI, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic"><span style="text-decoration:underline">Changes to the Fund’s Principal Risks </span></span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The section entitled “Style Factors Risk” on page S‑7 of the Summary Prospectus and the Prospectus and page 10 of the Prospectus is deleted in its entirety. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The following sections are added to the section entitled “Summary of Principal Risks” in the Summary Prospectus and the Prospectus: </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold">Quality Stocks Risk</span>. Stocks included in the Underlying Index are deemed by the Index Provider to be quality stocks, but there is no guarantee that the past performance of these stocks will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock’s quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold">Value Securities Risk</span>. Value securities are those issued by companies that may be perceived as undervalued. Such securities may decline in price or fail to appreciate for long periods of time, and they may never realize their full potential value. Value securities may underperform growth securities and other types of assets as well as the overall stock market. Value securities may go in and out of favor over time, which could affect the performance of the Fund. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">If you have any questions, please call 1‑800‑iShares (1‑800‑474‑2737). </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:8pt;font-family:arial;">iShares<sup style="font-size:75%;vertical-align:top">®</sup> is a registered trademark of BlackRock Fund Advisors and its affiliates.</div> <div style="margin-top:0pt;margin-bottom:0pt;font-size:24pt;font-family:arial;font-weight:bold;text-align:center;">Important Notice Regarding Change in Investment Policy and Name </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:24pt;font-family:arial;font-weight:bold;text-align:center;">iShares<sup style="font-size:75%;vertical-align:top">®</sup><sup style="font-size:75%;vertical-align:top"> </sup> </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">iShares Trust</div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Supplement dated April 1, 2024 (the “Supplement”) </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">to the currently effective Summary Prospectus, Prospectus, and Statement of Additional Information (the “SAI”) for the iShares Factors US Growth Style ETF (STLG) (the “Fund”) </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic">The information in this Supplement updates information in, and should be read in conjunction with, the Summary Prospectus, Prospectus and SAI for the Fund. </span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Board of Trustees has approved the following changes for the Fund that are expected to take effect on or around June 3, 2024, except for the management fee change, which will take effect on April 1, 2024: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:99%;border:0px"> <tr> <td style="width:16%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:41%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:41%;"></td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; BORDER-TOP:0.75pt solid #000000; padding-left:8pt;height:1.5pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-TOP:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:1.5pt;"> </td> <td colspan="2" style="BORDER-TOP:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:1.5pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;"><span style="font-weight:bold">Current</span></td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"><span style="font-weight:bold">New</span></td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Fund Name</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">iShares Factors US Growth Style ETF</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">iShares MSCI USA Quality GARP ETF</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Ticker</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">STLG</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">GARP</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Underlying Index</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">Russell US Large Cap Factors Growth Style Index</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">MSCI USA Quality GARP Select Index</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Investment Objective</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization stocks with favorable exposure to target style factors subject to constraints.</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">The Fund seeks to track the investment results of an index composed of U.S. large- and mid‑capitalization growth stocks exhibiting favorable value and quality characteristics.</div> </td> </tr> <tr style="font-size:1pt"> <td style="BORDER-LEFT:0.75pt solid #000000; padding-left:8pt;height:3pt;"> </td> <td colspan="2" style="BORDER-LEFT:0.75pt solid #000000; BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> <td colspan="2" style="BORDER-RIGHT:0.75pt solid #000000;height:3pt;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Management Fee</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;">0.25%</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="text-align: center;padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">0.15%</div> </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">Unless otherwise noted herein, all references in the Summary Prospectus, Prospectus, and SAI to “iShares Factors US Growth Style ETF,” “STLG” and “Russell US Large Cap Factors Growth Style Index” are replaced with the Fund’s new name, new ticker, or new Underlying Index, respectively. </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic"><span style="text-decoration:underline">Changes to the Fund’s “Fees and Expenses” </span></span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The Annual Fund Operating Expenses table and Example on page S‑1 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td></td> <td style="vertical-align:bottom;width:25%;"></td> <td></td> <td style="vertical-align:bottom;width:25%;"></td> <td></td> <td style="vertical-align:bottom;width:25%;"></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td colspan="7" style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;white-space:nowrap;"><span style="font-weight:bold">Annual Fund Operating Expenses</span><br/><span style="font-weight:bold">(ongoing expenses that you pay each year as a</span><br/><span style="font-weight:bold">percentage of the value of your investments)<sup style="font-size:75%;vertical-align:top">1, 2</sup></span></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="vertical-align:bottom;white-space:nowrap;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Management</div> <div style="margin-top:0pt;margin-bottom:1pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Fees</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Distribution and<br/>Service (12b‑1)<br/>Fees</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Other</div> <div style="margin-top:0pt;margin-bottom:1pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Expenses<sup style="font-size:75%;vertical-align:top">3</sup></div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Total Annual</div> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Fund<br/>Operating</div> <div style="margin-top:0pt;margin-bottom:1pt;border-bottom:1.50pt solid #000000;display:inline-block;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Expenses</div> </td> </tr> <tr style="font-size:1pt"> <td style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;text-align: center;">0.15%</td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;">None</td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;">0.00%</td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;">0.15%</td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;">Operating expenses paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any. </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;">The expense information in the table has been restated to reflect current fees. </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">3</sup> </td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;">The amount rounded to 0.00%. </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold">Example. </span>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: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:25%;"></td> <td style="vertical-align:bottom;width:1%;"></td> <td style="width:23%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td style="width:25%;"></td> <td style="vertical-align:bottom;width:1%;"></td> <td style="width:24%;"></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;white-space:nowrap;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">1 Year</div> </td> <td style="vertical-align:bottom;"> </td> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">3 Years</div> </td> <td style="vertical-align:bottom;"> </td> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">5 Years</div> </td> <td style="vertical-align:bottom;"> </td> <td style="text-align: center;border-bottom:1.50pt solid #000000;vertical-align:bottom;"> <div style="margin-top:0pt;margin-bottom:1pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">10 Years</div> </td> </tr> <tr style="font-size:1pt"> <td style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> <td colspan="2" style="height:3pt;"></td> </tr> <tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"> <td style="vertical-align:top;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$15</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$48</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$85</div> </td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;text-align: center;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;text-align:center;">$192</div> </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic"><span style="text-decoration:underline">Change to the Fund’s “Principal Investment Strategies” </span></span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The first four paragraphs of the section entitled “Principal Investment Strategies” on pages S‑2 and S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Fund seeks to track the investment results of the MSCI USA Quality GARP Select Index (the “Underlying Index”), which was developed by MSCI Inc. (the “Index Provider” or “MSCI”). The Underlying Index is a subset of the MSCI USA Index (the “Parent Index”), which is designed to measure the performance of the large- and mid‑capitalization segments of the U.S. equity market, as defined by the Index Provider. The Underlying Index’s “growth at a reasonable price” or “GARP” strategy seeks to measure the performance of securities in the Parent Index that exhibit stronger growth characteristics, with weighting based on relatively favorable value and quality characteristics. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Index Provider begins by calculating a “growth score” for each security in the Parent Index using five metrics: long-term forward earnings per share (“EPS”) growth rate; short-term forward EPS growth rate; current internal growth rate (based on return on equity and dividend payout metrics); long-term historical EPS </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"> growth trend; and long-term historical sales per share growth trend. The Index Provider then selects securities with higher growth scores until approximately 50% of the aggregate market capitalization of the Parent Index is reached, subject to certain constraints. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The process for weighting the selected securities in the Underlying Index involves calculating a “tilt score” for each security. Two components of the tilt score are value and quality scores, which are calculated for each security relative to its peers within the corresponding Global Industry Classification Standards sector. The value score is based on three metrics: price‑to‑book value, forward price‑to‑earnings ratio, and the ratio of enterprise value to cash flow from operations. The quality score is based on three metrics: return on equity, debt‑to‑equity ratio, and earnings variability. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">A security’s tilt score is based on the following: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;"> </td> <td style="width:2%;vertical-align:top;text-align: left;"><span style="font-family:times new roman;font-size:11.5pt">∎</span></td> <td style="width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;">whether the security is in the top 50% or bottom 50% of the cumulative weight of the selected securities calculated using free float-adjusted market capitalization; </div> </td> </tr> </table><div style="font-size:6pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;"> </td> <td style="width:2%;vertical-align:top;text-align: left;"><span style="font-family:times new roman;font-size:11.5pt">∎</span></td> <td style="width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;">whether the security’s value score is in the top 50% or bottom 50% of the scores of the selected securities; and </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:3%;"> </td> <td style="width:2%;vertical-align:top;text-align: left;"><span style="font-family:times new roman;font-size:11.5pt">∎</span></td> <td style="width:1%;vertical-align:top;"> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;">the particular quartile in which the security’s quality score falls. </div> </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">Tilt scores are generally lower for securities with larger market capitalizations and higher for securities with more favorable value and quality scores. To determine a security’s weight in the Underlying Index, its tilt score is multiplied by the security’s market capitalization weight in the Parent Index. The maximum weight of any individual issuer is 5%. The Index Provider also applies constraints on turnover and on sector weights after the tilt score is applied, relative to the sector weights of the Underlying Index before the tilt score is applied (i.e., with sector weights based on the free float-adjusted market capitalization of the selected securities). The Underlying Index is rebalanced on a quarterly basis. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">As of March 1, 2024, the Underlying Index consisted of 170 component securities. As of March 1, 2024, a significant portion of the Underlying Index is represented by securities of companies in the information technology and consumer discretionary industries or sectors. The components of the Underlying Index are likely to change over time. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">Paragraphs 8‑10 of the section entitled “Principal Investment Strategies” on page S‑3 of the Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Fund generally will invest at least 80% of its assets in the component securities of its Underlying Index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, as well as in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. Cash and cash equivalent investments associated with a derivative position will be treated as part of that position for the purposes of </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"> calculating the percentage of investments included in the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Fund may lend securities representing up to one‑third of the value of the Fund’s total assets (including the value of any collateral received). </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">The Underlying Index is sponsored by MSCI, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold"></span><span style="font-weight:bold"><span style="font-style:italic"><span style="text-decoration:underline">Changes to the Fund’s Principal Risks </span></span></span></div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The section entitled “Style Factors Risk” on page S‑7 of the Summary Prospectus and the Prospectus and page 10 of the Prospectus is deleted in its entirety. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;">The following sections are added to the section entitled “Summary of Principal Risks” in the Summary Prospectus and the Prospectus: </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold">Quality Stocks Risk</span>. Stocks included in the Underlying Index are deemed by the Index Provider to be quality stocks, but there is no guarantee that the past performance of these stocks will continue. Companies that issue these stocks may experience lower than expected returns or may experience negative growth, as well as increased leverage, resulting in lower than expected or negative returns to Fund shareholders. Many factors can affect a stock’s quality and performance, and the impact of these factors on a stock or its price can be difficult to predict. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"><span style="font-weight:bold">Value Securities Risk</span>. Value securities are those issued by companies that may be perceived as undervalued. Such securities may decline in price or fail to appreciate for long periods of time, and they may never realize their full potential value. Value securities may underperform growth securities and other types of assets as well as the overall stock market. Value securities may go in and out of favor over time, which could affect the performance of the Fund. </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">If you have any questions, please call 1‑800‑iShares (1‑800‑474‑2737). </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:8pt;font-family:arial;">iShares<sup style="font-size:75%;vertical-align:top">®</sup> is a registered trademark of BlackRock Fund Advisors and its affiliates.</div> iShares Trust