SCHEDULE 13G/A 1376474-25-000860 0001891626 XXXXXXXX LIVE 1 Ordinary shares (par value .0001) 12/31/2025 0002024203 Cayson Acquisition Corp G1993W109 205 W 37TH ST NEW YORK NY 10018 Rule 13d-1(c) Feis Equities LLC IL 769472 0 769472 0 769472 9.83 OO Type of Reporting Person: OO - Limited Liability Company Lawrence M. Feis X1 769472 0 769472 0 769472 9.83 IN Cayson Acquisition Corp 205 W 37TH ST, NEW YORK, NEW YORK 10018 (i) Feis Equities LLC (ii) Lawrence M. Feis The address of the business office of each of the Reporting Persons is: 1740 Waukegan Road Suite 206 Glenview, Illinois 60025 Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated hereto by reference for each Reporting Person. Y The percentage set forth in row 11 of the cover page for each Reporting Person is based on 7,830,000 ordinary shares outstanding as of November 12, 2025, as reported by the Issuer in its 10-Q filing, for the period ended September 30, 2025, filed with the Securities and Exchange Commission on November 12, 2025. 9.83 769,472 0 769,472 0 Y Y Y Y Y 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 A - Joint Filing Agreement Feis Equities LLC Lawrence M. Feis 01/30/2026 Lawrence M. Feis Lawrence M. Feis 01/30/2026