# EDGAR Filing Document

**Accession Number:** 0001761055
**File Stem:** 0001193125-26-014075
**Filing Date:** 2026-1
**Character Count:** 2011
**Document Hash:** db9494bca907b9e4093ab2c047da9b64
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-014075.hdr.sgml**: 20260115

**ACCESSION NUMBER**: 0001193125-26-014075

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260115

**DATE AS OF CHANGE**: 20260115

**EFFECTIVENESS DATE**: 20260115

**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:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-228832
- **FILM NUMBER:** 26536219

**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 Systematic Alternatives Active ETF (Series ID: S000095901)

---

|  |  |
|:---|:---|
| Class Name                                 | Class ID   |
| iShares Systematic Alternatives Active ETF | C000264683 |

---

## Series and Classes Contracts Data

### iShares Systematic Alternatives Active ETF (Series ID: S000095901)

| Class ID   | Class Name                                 | Ticker Symbol   |
|:---|:---|:---|
| C000264683 | iShares Systematic Alternatives Active ETF |  |

**BLACKROCK ETF TRUST** 

iShares Systematic Alternatives Active ETF

(the "Fund")

**Supplement dated January 15, 2026 to the Prospectus and Statement of Additional Information of the Fund, each dated November 7, 2025, as supplemented to date** 

Effective as of April 30, 2026, the Fund's fiscal year end is changed from October 31 to April 30. The change will be reflected in the Fund's first reports on Form N-CSR for the period of December 9, 2025 (commencement of operations) to April 30, 2026.

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

PRSAI-IALT-0126SUP