X0407 4 2023-06-30 0000920148 LABORATORY CORP OF AMERICA HOLDINGS LH 0001453524 DiVincenzo Jonathan P. 531 SOUTH SPRING STREET BURLINGTON NC 27215 1 EVP, Pres, Central Labs & Intl 0 Restricted Stock Unit 2023-06-30 4 A 0 3036 0 A Common Stock 3036 4700 D Each Restricted Stock Unit represents the contingent right to receive one share of Laboratory Corporation of America Holdings Common Stock. In connection with the spin-off ("Spin-Off") of Fortrea Holdings Inc. ("Fortrea") by Laboratory Corporation of America Holdings ("Labcorp"), performance awards granted by Labcorp in 2021 for the 3-year performance period through December 31, 2023 (the "2021 PSA") were converted into time-vesting restricted stock units ("RSUs") of Labcorp pursuant to the terms of the Employee Matters Agreement by and between Labcorp and Fortrea (the "EMA"). The 2021 PSA was converted into a number of time-vesting Labcorp RSUs based on the degree of achievement of the performance criteria subject to the 2021 PSA prior to the Spin-Off and the adjustment ratio that applies to Labcorp equity awards in the Spin-Off, with vesting on the 30th day following Labcorp's filing of an annual report on Form 10-K that includes audited financial statements with respect to the 3-year period ending December 31, 2023. Amounts are estimates pending finalization of the adjustment ratio pursuant to the EMA. This number reflects the aggregate number of Restricted Stock Units held by the reporting person. /s/ Sandra D. van der Vaart, Attorney-in-Fact for Jonathan P. DiVincenzo 2023-07-05