Index 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, 2022 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 - 1-11353 LABORATORY CORPORATION OF AMERICA HOLDINGS (Exact name of registrant as specified in its charter) Delaware 13-3757 ...