SCHEDULE 13G/A 0000011544 XXXXXXXX LIVE 1 Ordinary Shares, par value $0.0001 per share 06/30/2025 0002032950 Horizon Space Acquisition II Corp. G4627B103 1412 Broadway, 21st Floor Suite 21V New York NY 10018 Rule 13d-1(b) W. R. Berkley Corporation DE 0 674346 0 674346 674346 N 7.4 CO Berkley Insurance Company DE 0 674346 0 674346 674346 N 7.4 IC CO Horizon Space Acquisition II Corp. 1412 Broadway, 21st Floor, Suite 21V, New York, NY 10018 The information required by Item 2(a) is set forth in Row 1 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person. The address of each Reporting Person is: 475 Steamboat Road Greenwich, CT 06830 The information required by Item 2(c) is set forth in Row 4 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person. N IC The information required by Items 4(a)-(c) is set forth in Rows 5-11 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person. Calculation of the ownership percentage set forth in Row 11 is based on the Issuer's publicly available Form 10-Q filed May 16, 2025, which states that the Issuer had outstanding 9,080,000 ordinary shares as May 15, 2025. Y Y N See Exhibit 99.1. Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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. W. R. Berkley Corporation By: /s/ Richard M. Baio 08/08/2025 Berkley Insurance Company By: /s/ Richard M. Baio 08/08/2025