(State or other jurisdiction of incorporation or organization) As filed with the U.S. Securities and Exchange Commission on September 28, 2023. Registration No. 333-274662 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 Mach Natural Resources LP (Exact name of registrant as specified in its charter) (Primary Standard Industrial Classification Code Number) Delaware 1311 93-1757616 (I.R.S. Employer Iden ...