Table of Contents For the fiscal year ended December 31, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION OR Washington, D.C. 20549 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-40887 Life Time Group Holdings, Inc. (Exact name of registrant as specified in its charter) Delaware 47-3481985 (St ...