UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Commission file number 001-31539 SM ENERGY COMPANY (Exact name of registrant as specified in its charter) Delaware 41-0518430 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer ...