X0202 SCHEDULE 13G 0001103882 XXXXXXXX LIVE Class A ordinary shares, par value US$0.0000001 05/28/2026 0001899123 Bitdeer Technologies Group G11448100 08 Kallang Avenue, Aperia tower 1 #09-03/04 Singapore U0 339509 Rule 13d-1(c) Sunrise Partners Limited Partnership b E9 0 18184369 0 18184369 18184369 9 PN Amounts reported in Rows (6), (8), and (9) include 18,075,400 Class A ordinary shares that the Reporting Persons have the right to acquire within 60 days upon exercise of long call options. Percent of class represented by amount in Row (11) is based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the Securities and Exchange Commission (the "SEC") on April 30, 2026. Paloma International L.P. b E9 0 18184369 0 18184369 18184369 9 PN HC Amounts reported in Rows (6), (8) and (9) include 18,075,400 Class A ordinary shares that the Reporting Persons have the right to acquire within 60 days upon exercise of long call options. Percent of class represented by amount in Row (11) is based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the SEC on April 30, 2026. Paloma Partners Management Co b DE 0 18184369 0 18184369 18184369 9 CO IA Amounts reported in Rows (6), (8) and (9) include 18,075,400 Class A ordinary shares that the Reporting Persons have the right to acquire within 60 days upon exercise of long call options. Percent of class represented by amount in Row (11) is based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the SEC on April 30, 2026. Paloma Partners Advisors LP b DE 0 18184369 0 18184369 18184369 9 PN IA Amounts reported in Rows (6), (8) and (9) include 18,075,400 Class A ordinary shares that the Reporting Persons have the right to acquire within 60 days upon exercise of long call options. Percent of class represented by amount in Row (11) is based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the SEC on April 30, 2026. Paloma Partners Advisors, Inc. b DE 0 18184369 0 18184369 18184369 9 CO HC Amounts reported in Rows (6), (8) and (9) include 18,075,400 Class A ordinary shares that the Reporting Persons have the right to acquire within 60 days upon exercise of long call options. Percent of class represented by amount in Row (11) is based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the SEC on April 30, 2026. S. Donald Sussman b X1 0 18184369 0 18184369 18184369 9 IN HC Amounts reported in Rows (6), (8) and (9) include 18,075,400 Class A ordinary shares that the Reporting Persons have the right to acquire within 60 days upon exercise of long call options. Percent of class represented by amount in Row (11) is based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the SEC on April 30, 2026. Bitdeer Technologies Group 08 Kallang Avenue, Aperia tower 1, #09-03/04, Singapore 339509 This statement is filed by the following persons (each, a "Reporting Person" and together, the "Reporting Persons"): Sunrise Partners Limited Partnership; Paloma International L.P.; Paloma Partners Management Company; Paloma Partners Advisors LP; Paloma Partners Advisors, Inc.; and S. Donald Sussman. Sunrise Partners Limited Partnership Maples Corporate Services Limited P.O. Box 309 Ugland House, Grand Cayman, KY1-1104, Cayman Islands Paloma International L.P. Maples Corporate Services Limited P.O. Box 309 Ugland House, Grand Cayman, KY1-1104, Cayman Islands Paloma Partners Management Company Two American Lane Greenwich, CT 06836 Paloma Partners Advisors LP 888 E. Las Olas Blvd. Ft. Lauderdale, FL 33301 Paloma Partners Advisors, Inc. c/o Paloma Partners Advisors LP 888 E. Las Olas Blvd. Ft. Lauderdale, FL 33301 S. Donald Sussman c/o Paloma Partners Advisors LP 888 E. Las Olas Blvd. Ft. Lauderdale, FL 33301 Sunrise Partners Limited Partnership - Cayman Islands Paloma International L.P. - Cayman Islands Paloma Partners Management Company - Delaware Paloma Partners Advisors LP - Delaware Paloma Partners Advisors, Inc. - Delaware S. Donald Sussman - United States of America Y As of May 28, 2026, the Reporting Persons may have been deemed the beneficial owners of 12,861,001 Class A ordinary shares. This amount consisted of (i) 92,001 Class A ordinary shares and (ii) 12,769,000 Class A ordinary shares the Reporting Persons had the right to acquire within sixty days upon exercise of long call options. As of June 17, 2026, the Reporting Persons may be deemed the beneficial owners of 18,184,369 Class A ordinary shares. This amount consists of (i) 108,969 Class A ordinary shares and (ii) 18,075,400 Class A ordinary shares the Reporting Persons have the right to acquire within sixty days upon exercise of long call options. As of May 28, 2026, the Reporting Persons may have been deemed to beneficially own approximately 6.4% of the Class A ordinary shares outstanding. As of June 17, 2026, the Reporting Persons may be deemed to beneficially own approximately 9% of the Class A ordinary shares outstanding. The foregoing percentages are based on 201,291,256 Class A ordinary shares outstanding, which is the sum of (i) 191,152,162 Class A ordinary shares outstanding as of December 31, 2025, and (ii) an aggregate 10,139,094 Class A ordinary shares that became outstanding after December 31, 2025, and through April 30, 2026, each as reported in the Issuer's annual report on Form 20-F filed with the SEC on April 30, 2026. 0 18,184,369 0 18,184,369 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Exhibit 1: Joint Filing Agreement Sunrise Partners Limited Partnership /s/ David Friedman 06/18/2026 Paloma International L.P. /s/ David Friedman 06/18/2026 Paloma Partners Management Co /s/ David Friedman 06/18/2026 Paloma Partners Advisors LP /s/ S. Donald Sussman 06/18/2026 Paloma Partners Advisors, Inc. /s/ S. Donald Sussman 06/18/2026 S. Donald Sussman /s/ S. Donald Sussman 06/18/2026