UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10-K (Mark One) ☑ 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: 1-12162 BorgWarner Inc. (Exact name of registrant as specified in its charter) Delaware 13-3404508 (State or other jurisdiction of Incorp ...