6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

For the month of April, 2026

Commission File Number: 001-42128

Telix Pharmaceuticals Limited

(Translation of registrant’s name into English)

55 Flemington Road

North Melbourne, Victoria 3051, Australia

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

1

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

On April 13, 2026 (Melbourne, Australia), Telix Pharmaceuticals Limited filed an announcement with the Australian Securities Exchange titled “Telix and Regeneron Announce Radiopharma Collaboration,” a copy of which is attached to this Form 6-K as Exhibit 99.1.

The information contained in this Form 6-K, except for the commentary in Exhibit 99.1 appearing in the third, fourth and fifth paragraphs on page 1, is incorporated by reference into our Registration Statement on Form F-3ASR (File No. 333-293611) and Registration Statement on Form S-8 (File No. 333-283917).

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.