Table of Contents As filed with the Securities and Exchange Commission on August 16, 2023 Registration No. 333-273348 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 DRILLING TOOLS INTERNATIONAL CORPORATION (Exact name of Registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 1389 87-2488708 (Primary Standard Industrial Classification Code Numbe ...