# EDGAR Filing Document

**Accession Number:** 0002038383
**File Stem:** 0001999371-26-011681
**Filing Date:** 2026-5
**Character Count:** 4399
**Document Hash:** bc5b1b2b1fee091ffcfc4842f496152a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-26-011681.hdr.sgml**: 20260529

**ACCESSION NUMBER**: 0001999371-26-011681

**CONFORMED SUBMISSION TYPE**: 8-A12B

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260529

**DATE AS OF CHANGE**: 20260529

**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:** 8-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42481
- **FILM NUMBER:** 261042835

**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

**UNITED STATES <br> SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-A**

**FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO**

**SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934**

**THORNBURG ETF TRUST**

(Exact name of registrant as specified in its charter)

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| | |
|:---|:---|
| **Massachusetts** | **See below** |
| (State of incorporation or organization) | (I.R.S. Employer Identification No.) |
| **2300 North Ridgetop Road**<br> **Santa Fe, NM**  | **87506** |
| (Address of Principal Executive Offices) | (Zip Code) |

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**Securities to be registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| Title of Each Class<br> to be so Registered | Name of the Exchange on which<br> Each Class is to be so Registered | I.R.S. Employer<br> Identification Number |
| **Shares of beneficial interest, no par value per share, of :**<br>**Thornburg Premium Income Builder ETF** | **NYSE Arca, Inc.** | **41-4766079** |

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If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), check the following box. ☐

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ☐

Securities Act registration statement file number to which this form relates: 333-282372

Securities to be registered pursuant to Section 12(g) of the Exchange Act: None.

**INFORMATION REQUIRED IN REGISTRATION STATEMENT**

**Item 1. Description of Registrant's Securities to be Registered.**

A description of the shares of beneficial interest of Thornburg Premium Income Builder ETF, a series of Thornburg ETF Trust (the "Registrant"), is incorporated by reference to [Post-Effective Amendment No. 3 to the Registrant's registration statement on Form N-1A (the "Registration Statement"), filed with the Securities and Exchange Commission on May 22, 2026 (File Nos. 333-282372; 811-24005)](https://www.sec.gov/ix?doc=/Archives/edgar/data/0002038383/000199937126011364/thor-485bpos_052226.htm). Any form of supplement to the Registration Statement that is subsequently filed is hereby also incorporated by reference herein.

**Item 2. Exhibits.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. [Agreement and Declaration of Trust of the Registrant, dated September 9, 2024, is incorporated by reference to the Registration Statement filed on September 27, 2024](https://www.sec.gov/Archives/edgar/data/2038383/000199937124012537/ex99-a.htm) .

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. [Amended and Restated Bylaws of the Registrant, dated March 5, 2025, is incorporated by reference to post-effective amendment no. 1 to the Registration Statement filed on December 29, 2025.](https://www.sec.gov/Archives/edgar/data/2038383/000199937125021188/ex99-b.htm)

**SIGNATURE**

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this registration statement on Form 8-A to be signed on its behalf by the undersigned, thereto duly authorized, as of May 29, 2026.

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| | |
|:---|:---|
| Thornburg ETF Trust | Thornburg ETF Trust |
| By: | /s/ Curtis Holloway |
| Name: | Curtis Holloway |
| Title: | Chief Financial Officer and Treasurer |

---