As filed with the Securities and Exchange Commission on August 8, 2025. Registration No. 333-289146 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 Houston American Energy Corp. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 1311 76-0675953 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identific ...