# EDGAR Filing Document

**Accession Number:** 0002038383
**File Stem:** 0001999371-26-013257
**Filing Date:** 2026-6
**Character Count:** 2447
**Document Hash:** b9ad5efc495be2aa03470e9eb798064c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-26-013257.hdr.sgml**: 20260623

**ACCESSION NUMBER**: 0001999371-26-013257

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260623

**DATE AS OF CHANGE**: 20260623

**EFFECTIVENESS DATE**: 20260623

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Thornburg ETF Trust
- **CENTRAL INDEX KEY:** 0002038383

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-282372
- **FILM NUMBER:** 261109819

**BUSINESS ADDRESS:**
- **STREET 1:** 2300 NORTH RIDGETOP ROAD
- **CITY:** SANTA FE
- **STATE:** NM
- **ZIP:** 87506
- **BUSINESS PHONE:** 617-235-4739

**MAIL ADDRESS:**
- **STREET 1:** 2300 NORTH RIDGETOP ROAD
- **CITY:** SANTA FE
- **STATE:** NM
- **ZIP:** 87506

## Series and Classes Contracts Data

### Thornburg Premium Income Builder ETF (Series ID: S000105007)

| Class ID   | Class Name                           | Ticker Symbol   |
|:---|:---|:---|
| C000275711 | Thornburg Premium Income Builder ETF | THOR            |

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|:---|:---|
| ![](rglogo.jpg) | ROPES & GRAY LLP<br> PRUDENTIAL TOWER<br> 800 BOYLSTON STREET<br> BOSTON, MA 02199-3600<br> WWW.ROPESGRAY.COM |

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June 23, 2026 Ali R. Olia T +1 617 951 7204 Ali.Olia@ropesgray.com

**<u>BY EDGAR</u>**

Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549

Re: Thornburg ETF Trust (the "Registrant")<br> (Registration Nos. 333-282372 and 811-24005)

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended (the "Securities Act"), the undersigned has been authorized by the Registrant to submit this filing in lieu of a filing under Rule 497(c) under the Securities Act, and to certify (a) that the form of prospectus and statement of additional information used with respect to Thornburg Premium Income Builder ETF, a series of the Registrant, does not differ from that contained in Post-Effective Amendment No. 3 to the Registrant's Registration Statement under the Securities Act ("Amendment No. 3"), and (b) that Amendment No. 3 was filed electronically.

Any questions or comments regarding this matter should be directed to the undersigned at (617) 951-7204.

Very truly yours,

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|:---|
| &nbsp;&nbsp;/s/ Ali R. Olia |
| &nbsp;&nbsp;Ali R. Olia |

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