X0202 SCHEDULE 13G 0002155196 XXXXXXXX LIVE Class A Common Shares, par value $0.001 per share 10/16/2025 0002025416 OBOOK HOLDINGS, INC. G67187107 9F., NO. 28, WENCHENG RD BEITOU DIST TAIPEI CITY F5 112 Rule 13d-1(d) SBI Digital Asset Holdings Co., Ltd. M0 15308819 0 15308819 0 15308819 40.5 CO Based on 37,825,411 Class A Common Shares of OBOOK HOLDINGS, INC. (the "Issuer") outstanding as of May 14, 2026, as reported in the Issuer's Registration Statement on Form F-1 filed with the Securities and Exchange Commission (the "Commission") on May 14, 2026. OBOOK HOLDINGS, INC. 9F., NO. 28, WENCHENG RD., BEITOU DIST., TAIPEI CITY 112, TAIWAN, REPUBLIC OF CHINA This Schedule 13G is being filed on behalf of SBI Digital Asset Holdings Co., Ltd. (referred to herein as "SBI Digital Asset Holdings" or the "Reporting Person"), a wholly owned subsidiary of SBI Holdings, Inc. The shares subject to this report are held by SBI Digital Strategic Investment Co., Ltd. ("SBI Digital Strategic Investment"), a wholly owned subsidiary of SBI Digital Asset Holdings. Neither the present filing nor anything contained herein shall be construed as an admission that SBI Digital Asset Holdings constitutes a "person" for any purposes other than Section 13(d) of the Act. The principal business address of SBI Digital Asset Holdings is 1-6-1 Roppongi, Minato-Ward, Tokyo, Japan. See response to Item 4 on cover page. Y 15,308,819 shares of Class A Common Shares. SBI Digital Strategic Investment acquired the securities prior to the Issuer's listing on Nasdaq and beneficially owned more than five percent of the outstanding shares at the time the Issuer's securities became registered under the Securities Exchange Act of 1934. 40.5% The percentage above is based on 37,825,411 Class A Common Shares of the Issuer outstanding as set forth in the Issuer's Registration Statement on Form F-1 filed with the Commission on May 14, 2026. 15,308,819. 0 15,308,819. 0 Y Y N See Item 2(a). Y Y Y SBI Digital Asset Holdings Co., Ltd. /s/ Masashi Okuyama 09/17/2026