# EDGAR Filing Document

**Accession Number:** 0001100663
**File Stem:** 0001193125-25-220646
**Filing Date:** 2025-9
**Character Count:** 3988
**Document Hash:** 4f52d2344233ddb2f3a1aeb69656052b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-220646.hdr.sgml**: 20250926

**ACCESSION NUMBER**: 0001193125-25-220646

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 11

**FILED AS OF DATE**: 20250926

**DATE AS OF CHANGE**: 20250926

**EFFECTIVENESS DATE**: 20250926

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** iSHARES TRUST
- **CENTRAL INDEX KEY:** 0001100663

**ORGANIZATION NAME:**
- **EIN:** 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:** 251350824

**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

## Series and Classes Contracts Data

### iShares MSCI ACWI Low Carbon Target ETF (Series ID: S000047644)

---

|  |  |  |
|:---|:---|:---|
| Class Name                              | Ticker Symbol | Class ID   |
| iShares MSCI ACWI Low Carbon Target ETF | CRBN          | C000149539 |

---

## Series and Classes Contracts Data

### iShares MSCI ACWI Low Carbon Target ETF (Series ID: S000047644)

| Class ID   | Class Name                              | Ticker Symbol   |
|:---|:---|:---|
| C000149539 | iShares MSCI ACWI Low Carbon Target ETF | CRBN            |

?xml version='1.0' encoding='ASCII'? Form 497

------

## iShares<sup>®</sup>

#### iShares Trust

#### Supplement dated September 26, 2025

#### to the currently effective Summary Prospectus, Prospectus, and

#### Statement of Additional Information ("SAI") for the

#### iShares MSCI ACWI Low Carbon Target ETF (CRBN) (the "Fund")

#### The following changes to the Fund will be effective November 25, 2025:
**Change to the Fund Name**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;**Current Fund Name** | **New Fund Name** |
| &nbsp;&nbsp;&nbsp;iShares MSCI ACWI Low Carbon Target ETF | iShares Low Carbon Optimized MSCI ACWI ETF |

---

**Change to the Fund's "Principal Investment Strategies"**

**The fifth paragraph of the section entitled Principal Investment Strategies of the Summary Prospectus and Prospectus of the Fund are deleted in its entirety and replaced with the following:** 

The Underlying Index is then constructed using a process that aims to achieve replicability and investability, subject to the following objective and constraints: (i) minimize carbon exposure by at least 30% subject to a tracking error constraint of 50 basis points relative to the Parent Index; (ii) the maximum weight of an Underlying Index constituent may not be greater than 20 times its weight in the Parent Index; (iii) country weights in the Underlying Index may not deviate more than 2% from the country weights in the Parent Index; and (iv) sector weights in the Underlying Index may not deviate more than 2% from the sector weights in the Parent Index, with the exception of the energy sector, where there is no weight constraint applied.

**Changes to the Fund's "Construction and Maintenance of the Underlying Indexes"**

**The second bullet of the Index Methodology subsection of the MSCI ACWI Low Carbon Target Index (the Fund's "Underlying Index") in the MSCI Indexes subsection of the Construction and Maintenance of the Underlying Indexes section of the SAI for the Fund is deleted in its entirety and replaced with the following:** 

• Minimize the carbon exposure by at least 30% subject to a tracking error constraint of 50 basis points relative to the parent index;

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

iShares<sup>®</sup> is a registered trademark of BlackRock Fund Advisors and its affiliates.

IS-A-CRBNmc-0925

#### PLEASE RETAIN THIS SUPPLEMENT

#### FOR FUTURE REFERENCE