# EDGAR Filing Document

**Accession Number:** 0001761055
**File Stem:** 0001193125-26-085719
**Filing Date:** 2026-3
**Character Count:** 7032
**Document Hash:** 88e601143897b51f024e2ece67dd33cb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-085719.hdr.sgml**: 20260302

**ACCESSION NUMBER**: 0001193125-26-085719

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260302

**DATE AS OF CHANGE**: 20260302

**EFFECTIVENESS DATE**: 20260302

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BlackRock ETF Trust
- **CENTRAL INDEX KEY:** 0001761055

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

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-228832
- **FILM NUMBER:** 26709221

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809
- **BUSINESS PHONE:** 8004417762

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

## Series and Classes Contracts Data

### iShares Government Money Market ETF (Series ID: S000089874)

| Class ID   | Class Name                          | Ticker Symbol   |
|:---|:---|:---|
| C000256702 | iShares Government Money Market ETF |  |

**BLACKROCK ETF TRUST** 

iShares Government Money Market ETF

(the "Fund")

Supplement dated February 27, 2026 to the Summary Prospectus, Prospectus and Statement of Additional Information ("SAI") of the Fund, each dated February 27, 2026, as amended or supplemented to date

**On February 19, 2026, the Board of Trustees of the BlackRock ETF Trust has approved changes to the investment strategy of the Fund to remove repurchase agreements from the Fund's principal investments.** 

**Effective on or about April 28, 2026, the following changes are made to the Fund's Summary Prospectus, Prospectus and SAI, as applicable:** 

**The first two paragraphs of the section of the Summary Prospectus and Prospectus entitled "Principal Investment Strategies" are hereby deleted in their entirety and replaced with the following two paragraphs:** 

The Fund invests at least 99.5% of its total assets in cash, U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities. The interest income earned on these assets, under current federal law, generally may not be subject to state income tax. The Fund invests in securities maturing in 397 days or less (with certain exceptions) and the portfolio will have a dollar-weighted average maturity of 60 days or less and a dollar-weighted average life of 120 days or less. The Fund may invest in variable and floating rate instruments, and transact in securities on a when-issued, delayed delivery or forward commitment basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities. This policy is a non-fundamental policy of the Fund and the Fund will provide shareholders with at least 60 days' prior notice of any change in the policy.

**The "Repurchase Agreements Risk" is hereby deleted from the section of the Summary Prospectus and Prospectus entitled "Summary of Principal Risks."** 

**The second and third paragraphs of the section of the Prospectus entitled "More Information About the Fund—Additional Information on Principal Investment Strategies" are hereby deleted in their entirety and replaced with the following two paragraphs.** 

The Fund invests at least 99.5% of its total assets in cash, U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities. The interest income earned on these assets, under current federal law, generally may not be subject to state income tax.

The Fund invests in securities maturing in 397 days or less (with certain exceptions) and the portfolio will have a dollar-weighted average maturity of 60 days or less and a dollar-weighted average life of 120 days or less. The Fund may invest in variable and floating rate instruments, and transact in securities on a when-issued, delayed delivery or forward commitment basis.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities. This policy is a non-fundamental policy of the Fund and the Fund will provide shareholders with at least 60 days' prior notice of any change in the policy.

**"Repurchase Agreements" is deleted from the section of the Prospectus entitled "More Information About the Fund—Principal Investments."** 

------

**The "Repurchase Agreements Risk" is hereby deleted from the section of the Prospectus entitled "A Further Discussion of Principal Risks."** 

**The second, third, and fourth paragraphs of the section of the SAI entitled "Investment Strategies and Risks of the Fund—Investment Strategies and Policies" are hereby deleted in their entirety and replaced with the following:** 

The Fund invests at least 99.5% of its total assets in cash, U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities. The interest income earned on these assets, under current federal law, generally may not be subject to state income tax. The Fund invests in securities maturing in 397 days or less (with certain exceptions) and the portfolio will have a dollar-weighted average maturity of 60 days or less and a dollar-weighted average life of 120 days or less. The Fund may invest in variable and floating rate instruments, and transact in securities on a when-issued, delayed delivery or forward commitment basis.

The Fund invests in securities maturing within 397 days or less from the date of purchase, with certain exceptions. For example, certain government securities held by the Fund may have remaining maturities exceeding 397 days if such securities provide for adjustments in their interest rates not less frequently than every 397 days.

The Fund invests, under normal circumstances, at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in U.S. Treasury bills, notes and other obligations issued or guaranteed as to principal and interest by the U.S. Government, its agencies or instrumentalities. This policy is a non-fundamental policy of the Fund and the Fund will provide shareholders with at least 60 days' prior notice of any change in the policy.

**"Repurchase Agreements" is hereby deleted from the section of the SAI entitled "Investment Strategies and Risks of the Fund—Investment Strategies and Policies."** 

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

PR2SAI-GMMF-0226SUP