As filed with the U.S. Securities and Exchange Commission on September 23, 2024. Registration No. 333-279771 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 4 TO FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 MEDICUS PHARMA LTD. (Exact name of Registrant as specified in its charter) ______________________________ Ontario, Canada 2834 98-1778211 (State or other jurisdiction of (Primary Standard Industrial (I.R.S. Employer incorporation or organization) ...