As filed with the Securities and Exchange Commission on August 4, 2025 Registration No. 333- Delaware 2834 82-5118368 (State or other jurisdiction of incorporation or organization) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 OS THERAPIES INCORPORATED (Exact name of registrant as specified in its charter) (Primary SIC Code) (IRS Employer Identification No.) 115 Pullman Crossing Road, Suite #103 Grasonville, Maryland ...