As filed with the Securities and Exchange Commission on May 9, 2024 Registration No. 333-278844 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 4 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 INHIBIKASE THERAPEUTICS, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 2836 26-3407249 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identificatio ...