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 UNDER
THE SECURITIES EXCHANGE ACT OF 1934

For the month of June 2025

Commission file number: 001-41687

BITDEER TECHNOLOGIES GROUP

08 Kallang Avenue

Aperia tower 1, #09-03/04

Singapore 339509

(Address of Principal Executive Offices)

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

Form 20-F  ☒          Form 40-F  ☐

EXPLANATORY NOTE

On June 25, 2025, Bitdeer Technologies Group (the “Company”) closed the private placement of an additional US$45.0 million principal amount of 4.875% Convertible Senior Notes due 2031 (the “notes”), pursuant to the full exercise by the initial purchasers of their option granted in connection with the Company’s previously announced private placement of US$330.0 million principal amount of notes. Following this closing, the gross proceeds from the notes offering amounted to US$375.0 million.

INCORPORATION BY REFERENCE

This current report on Form 6-K is hereby incorporated by reference in the registration statements of the Company on Form F-3 (No. 333-273905, No. 333-278027, No. 333-278029, No. 333-280041 and No. 333-283732) and Form S-8 (No. 333-272858 and No. 333-275342), to the extent not superseded by documents or reports subsequently filed or furnished.

Signature

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

Date: June 30, 2025

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