Registration No. As filed with the U.S. Securities and Exchange Commission on April 5, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Shuttle Pharmaceuticals Holdings, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 2834 82-5089826 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) 401 ...

As filed with the Securities and Exchange Commission on January 30, 2023 Registration No. 333-269414 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 SHUTTLE PHARMACEUTICALS HOLDINGS, INC. (Exact name of registrant as specified in its charter) | Delaware | 2834 | 82-5089826 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer | | incorporation or org ...

As filed with the Securities and Exchange Commission on January 25, 2023 Registration No. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 SHUTTLE PHARMACEUTICALS HOLDINGS, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Delaware 2834 82-5089826 (I.R.S. Employer Identification No.) One Research Court, Suite 450 Rockvil ...