0001100663 2026-04-30 2026-04-30 0001100663 ist:S000004367Member 2026-04-30 2026-04-30 false 2026-04-30 497 0001100663 2026-08-31 N-1A <div style="margin-top:0pt;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 August 31, 2026 </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 </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Summary Prospectus and Prospectus for the </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">iShares Morningstar U.S. Equity ETF (ILCB) </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">(the “Fund”) </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">As announced on August 6, 2026, the Board of Trustees approved the following changes for the Fund that are expected to take effect on or around October 5, 2026: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;"> </td> <td style="width:4%;vertical-align:top;text-align:left;">1.</td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="vertical-align:top;text-align:left;">The Fund’s ticker, name, and Underlying Index will be changed to the following, and all references to each shall be updated with the following: </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:82%;border-spacing:0px;margin:0 auto"> <tr> <td style="width:14%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:42%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:42%;"></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="padding-bottom:2pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;white-space:nowrap;text-align:center;"><span style="font-weight:bold">New Ticker</span></td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;text-align:center;"><span style="font-weight:bold">New Fund Name</span></td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;text-align:center;"><span style="font-weight:bold">New Underlying Index Name</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="padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;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;">MLRG</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;text-align:center;">iShares MSCI USA ETF</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;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;">MSCI USA Index</div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;"> </td> <td style="width:4%;vertical-align:top;text-align:left;">2.</td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="vertical-align:top;text-align:left;">The first and second paragraphs of the Principal Investment Strategies section in the Fund’s Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;margin-left:9%;font-size:10pt;font-family:arial;">The Fund seeks to track the investment results of the MSCI USA Index (the “Underlying Index”), which measures the performance of the large- and mid‑capitalization segments of the U.S. equities market, as determined by MSCI Inc. (“MSCI” or the “Index Provider”). The Underlying Index represents approximately 85% of the free float-adjusted market capitalization in the U.S. The Underlying Index is free float-adjusted market capitalization weighted. </div><div style="margin-top:6pt;margin-bottom:0pt;margin-left:9%;font-size:10pt;font-family:arial;">As of June 30, 2026, a significant portion of the Underlying Index is represented by securities of companies in the technology industry or sector. The components of the Underlying Index are likely to change over time. </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;"> </td> <td style="width:4%;vertical-align:top;text-align:left;">3.</td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="vertical-align:top;text-align:left;">The last paragraph of the Principal Investment Strategies section in the Fund’s Summary Prospectus and Prospectus is deleted in its entirety and replaced with the following: </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;margin-left:9%;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;">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: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 August 31, 2026 </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 </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">Summary Prospectus and Prospectus for the </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">iShares Morningstar U.S. Equity ETF (ILCB) </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;font-weight:bold;text-align:center;">(the “Fund”) </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;">As announced on August 6, 2026, the Board of Trustees approved the following changes for the Fund that are expected to take effect on or around October 5, 2026: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;"> </td> <td style="width:4%;vertical-align:top;text-align:left;">1.</td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="vertical-align:top;text-align:left;">The Fund’s ticker, name, and Underlying Index will be changed to the following, and all references to each shall be updated with the following: </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:82%;border-spacing:0px;margin:0 auto"> <tr> <td style="width:14%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:42%;"></td> <td style="vertical-align:bottom;"></td> <td style="width:42%;"></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="padding-bottom:2pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;white-space:nowrap;text-align:center;"><span style="font-weight:bold">New Ticker</span></td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;text-align:center;"><span style="font-weight:bold">New Fund Name</span></td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:2pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;text-align:center;"><span style="font-weight:bold">New Underlying Index Name</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="padding-bottom:3pt ;BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-left:8pt;vertical-align:middle;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;">MLRG</div> </td> <td style=" BORDER-LEFT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000;vertical-align:middle;text-align:center;">iShares MSCI USA ETF</td> <td style=" BORDER-BOTTOM:0.75pt solid #000000;vertical-align:bottom;"> </td> <td style="padding-bottom:3pt ;BORDER-RIGHT:0.75pt solid #000000; BORDER-BOTTOM:0.75pt solid #000000; padding-right:2pt;vertical-align:middle;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;">MSCI USA Index</div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;"> </td> <td style="width:4%;vertical-align:top;text-align:left;">2.</td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="vertical-align:top;text-align:left;">The first and second paragraphs of the Principal Investment Strategies section in the Fund’s Summary Prospectus and Prospectus are deleted in their entirety and replaced with the following: </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;margin-left:9%;font-size:10pt;font-family:arial;">The Fund seeks to track the investment results of the MSCI USA Index (the “Underlying Index”), which measures the performance of the large- and mid‑capitalization segments of the U.S. equities market, as determined by MSCI Inc. (“MSCI” or the “Index Provider”). The Underlying Index represents approximately 85% of the free float-adjusted market capitalization in the U.S. The Underlying Index is free float-adjusted market capitalization weighted. </div><div style="margin-top:6pt;margin-bottom:0pt;margin-left:9%;font-size:10pt;font-family:arial;">As of June 30, 2026, a significant portion of the Underlying Index is represented by securities of companies in the technology industry or sector. The components of the Underlying Index are likely to change over time. </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;"> </td> <td style="width:4%;vertical-align:top;text-align:left;">3.</td> <td style="font-size:8pt;width:1%;vertical-align:top;"> </td> <td style="vertical-align:top;text-align:left;">The last paragraph of the Principal Investment Strategies section in the Fund’s Summary Prospectus and Prospectus is deleted in its entirety and replaced with the following: </td> </tr> </table><div style="margin-top:6pt;margin-bottom:0pt;margin-left:9%;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;">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