If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




schemaVersion:


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Represents 9,402,764 Class A ordinary shares, par value US$0.0000001 per share, directly held by Shinning Stone Invest Co., Ltd. ("Shinning Stone"). Shinning Stone is a British Virgin Islands company wholly owned by Mr. Zhaofeng Zhao. Mr. Zhao is also the sole director of Shinning Stone. (2) The percentage of Class A ordinary shares beneficially owned is based on a total of 191,152,162 Class A ordinary shares of the Issuer outstanding as of December 31, 2025, as reported in the Issuer's prospectus supplement filed with the Securities and Exchange Commission on February 23, 2026 (Registration No. 333-283732) (the "Prospectus Supplement").


SCHEDULE 13D




Comment for Type of Reporting Person:
(1) Represents 9,402,764 Class A ordinary shares, par value US$0.0000001 per share, directly held by Shinning Stone, a British Virgin Islands company wholly owned by Mr. Zhaofeng Zhao. Mr. Zhao is also the sole director of Shinning Stone. (2) The percentage of Class A ordinary shares beneficially owned is based on a total of 191,152,162 Class A ordinary shares of the Issuer outstanding as of December 31, 2025, as reported in the Prospectus Supplement.


SCHEDULE 13D


 
Shinning Stone Invest Co., Ltd.
 
Signature:/s/ Zhaofeng Zhao
Name/Title:Zhaofeng Zhao/Director
Date:04/20/2026
 
Zhaofeng Zhao
 
Signature:/s/ Zhaofeng Zhao
Name/Title:Zhaofeng Zhao
Date:04/20/2026

Exhibit 99.1

 

JOINT FILING AGREEMENT

  

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the class A ordinary shares, par value $0.0000001 per share, of Bitdeer Technologies Group, a Cayman Islands exempted company, and that this Agreement may be included as an exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

 

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of April 20, 2026.

 

  Shinning Stone Invest Co., Ltd.
   
  By:  /s/ Zhaofeng Zhao
  Name: Zhaofeng Zhao
  Title: Director

 

  Zhaofeng Zhao
   
  /s/ Zhaofeng Zhao