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: SEPTEMBER 30, 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 No. 1-33145 SALLY BEAUTY HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 36-2257936 ( ...