X0306 4 2021-02-08 0 0001439095 MRC GLOBAL INC. MRC 0001654736 Bowhay John L. FULBRIGHT TOWER, 1301 MCKINNEY ST., SUITE 2300 HOUSTON TX 77010 0 1 0 0 SVP - Intl Ops & Global VAMI Common Stock 2021-02-08 4 A 0 20089 0.00 A 111428 D Common Stock 2021-02-08 4 A 0 5208 0.00 A 116636 D Common Stock 2021-02-08 4 F 0 2287 9.32 D 114349 D On February 8, 2021, the reporting person received 20,089 Restricted Stock Units (the "February 2021 Annual Grant"). Each Restricted Stock Unit represents a contingent right to receive one share of the issuer's Common Stock. 34% of the February 2021 Annual Grant will vest on February 8, 2022 and 33% of the February 2021 Annual Grant will vest on each of February 8, 2023 and February 8, 2024, each conditioned on the reporting person's continued service with the issuer and subject to accelerated vesting under certain circumstances. The reporting person acquired these shares upon the settlement of certain Performance Share Units of the issuer. The reporting person surrendered these shares to satisfy tax withholding obligations resulting from the settlement of certain Performance Share Units of the issuer. /s/ Ann D. Garnett, by power of attorney 2021-02-10