# EDGAR Filing Document

**Accession Number:** 0001524513
**File Stem:** 0001193125-26-251624
**Filing Date:** 2026-6
**Character Count:** 3359
**Document Hash:** 1fa5e337e1488cebb894c812ae44369f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-251624.hdr.sgml**: 20260601

**ACCESSION NUMBER**: 0001193125-26-251624

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260601

**DATE AS OF CHANGE**: 20260601

**EFFECTIVENESS DATE**: 20260601

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** iShares U.S. ETF Trust
- **CENTRAL INDEX KEY:** 0001524513

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-179904
- **FILM NUMBER:** 261051860

**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

## Series and Classes Contracts Data

### iShares Ultra Short Duration Bond Active ETF (Series ID: S000040474)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                   | Ticker Symbol | Class ID   |
| iShares Ultra Short Duration Bond Active ETF | ICSH          | C000125661 |

---

## Series and Classes Contracts Data

### iShares Ultra Short Duration Bond Active ETF (Series ID: S000040474)

| Class ID   | Class Name                                   | Ticker Symbol   |
|:---|:---|:---|
| C000125661 | iShares Ultra Short Duration Bond Active ETF | ICSH            |

## iShares<sup>®</sup>
**iShares U.S. ETF Trust** 

**Supplement dated June 1, 2026** 

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

**Statement of Additional Information ("SAI")** 

**for the iShares Ultra Short Duration Bond Active ETF (ICSH) (the "Fund")** 

Effective June 1, 2026, Richard Mejzak, is added as a Portfolio Manager for the Fund. Accordingly, effective immediately, the following changes are made:

1. Richard Mejzak is added as a Portfolio Manager to each applicable section of the Fund's Summary Prospectus, Prospectus and SAI.

2. The following is added under the section of the Fund's Prospectus entitled "Management of the Funds – Portfolio Managers":

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

3. The following table is added under the section entitled "Investment Advisory, Administrative and Distribution Services – Portfolio Managers" of the Fund's SAI:

**Richard Mejzak\*** (as of May 15, 2026)

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Other Accounts** | **Other Accounts** | **Other Accounts with<br>Performance Fees** | **Other Accounts with<br>Performance Fees** |
| | **Number** | **Total Assets** | **Number** | **Total Assets** |
|  Registered Investment Companies | 11 | $147015000000 | 0 | N/A |
|  Other Pooled Investment Vehicles | 17 | 5006000000 | 0 | N/A |
|  Other Accounts | 65 | 45962000000 | 0 | N/A |

---

\* Portfolio Manager for iShares Ultra Short Duration Bond Active ETF only.

4. As of May 1, 2026, Richard Mejzak did not beneficially own shares of the Fund.

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-SUPP-PM-0626

**PLEASE RETAIN THIS SUPPLEMENT** 

**FOR FUTURE REFERENCE**