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 FOR THE TRANSITION PERIOD FROM __________ TO ________ COMMISSION FILE NUMBER 001-34295 SIRIUS XM HOLDINGS INC. (Exact name of registrant as specified in its charter) Delaware 38-3916511 (State or other jur ...