# EDGAR Filing Document

**Accession Number:** 0001804196
**File Stem:** 0001193125-25-203921
**Filing Date:** 2025-9
**Character Count:** 3543
**Document Hash:** 72bdd5ac1ed3b4f5da39829844835fa4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-203921.hdr.sgml**: 20250916

**ACCESSION NUMBER**: 0001193125-25-203921

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250916

**DATE AS OF CHANGE**: 20250915

**EFFECTIVENESS DATE**: 20250916

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BlackRock ETF Trust II
- **CENTRAL INDEX KEY:** 0001804196

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0731

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-236575
- **FILM NUMBER:** 251315388

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809
- **BUSINESS PHONE:** 800 882 0052

**MAIL ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809

## Series and Classes Contracts Data

### iShares Total Return Active ETF (Series ID: S000083073)

---

|  |  |
|:---|:---|
| Class Name                      | Class ID   |
| iShares Total Return Active ETF | C000246586 |

---

## Series and Classes Contracts Data

### iShares Total Return Active ETF (Series ID: S000083073)

| Class ID   | Class Name                      | Ticker Symbol   |
|:---|:---|:---|
| C000246586 | iShares Total Return Active ETF |  |

**BLACKROCK ETF TRUST II** 

iShares Total Return Active ETF

(the "Fund")

**Supplement dated September 16, 2025 (the "Supplement")** 

**to the Fund's Summary Prospectus and Prospectus,** 

**each dated November 27, 2024** 

**The following changes are made to the Fund's Summary Prospectus and Prospectus, as applicable:** 

**The section of the Summary Prospectus entitled "Management — Portfolio Managers" and the section of the Prospectus entitled "Fund Overview — Management — Portfolio Managers" are deleted in their entirety and replaced with the following:** 

**Portfolio Managers**. Rick Rieder, Russell Brownback, Chi Chen, Siddharth Mehta and Sam Summers (the "Portfolio Managers") are jointly and primarily responsible for the day-to-day management of the Fund. Mr. Rieder and Ms. Chen have been Portfolio Managers of the Fund since 2023. Messrs. Brownback, Mehta and Summers have been Portfolio Managers of the Fund since 2025.

**The section of the Prospectus entitled "Management — Portfolio Managers" is deleted in its entirety and replaced with the following:** 

**Portfolio Managers**. Rick Rieder, Russell Brownback, Chi Chen, Siddharth Mehta and Sam Summers (the "Portfolio Managers") are jointly and primarily responsible for the day-to-day management of the Fund. Mr. Rieder has been employed by BFA or its affiliates as a portfolio manager since 2009. Ms. Chen has been employed by BFA or its affiliates as a portfolio manager since 2022. Mr. Brownback has been employed by BFA or its affiliates as a portfolio manager since 2009. Mr. Mehta has been employed by BFA or its affiliates as a portfolio manager since 2011. Mr. Summers has been employed by BFA or its affiliates as a portfolio manager since 2012. Mr. Rieder and Ms. Chen have been Portfolio Managers of the Fund since 2023. Messrs. Brownback, Mehta and Summers have been Portfolio Managers of the Fund since 2025.

The Fund's SAI provides additional information about the Portfolio Managers' compensation, other accounts managed by the Portfolio Managers and the Portfolio Managers' ownership (if any) of shares in the Fund.

**Shareholders should retain this Supplement for future reference.**