As filed with the Securities and Exchange Commission on August 8, 2025. Registration No. 333-289142 Houston American Energy Corp. 801 Travis St., Suite 1425 Houston, Texas 77002 (State or other jurisdiction of incorporation or organization) Delaware 1311 76-0675953 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT O ...