X0306 4 2020-07-01 0 0001439095 MRC GLOBAL INC. MRC 0001816893 McCarthy John P FULBRIGHT TOWER, 1301 MCKINNEY STREET, SUITE 2300 HOUSTON TX 77010 0 1 0 0 SVP-Supply Chain Common Stock 2020-07-01 4 A 0 3160 0.00 A 31442 D On July 1, 2020, the reporting person received 3,160 Restricted Stock Units (the "July 2020 Grant"). Each Restricted Stock Unit represents a contingent right to receive one share of the issuer's Common Stock. The July 2020 Grant will vest on July 1, 2023, conditioned on the reporting person's continued service with the issuer and subject to accelerated vesting under certain circumstances. /s/ Ann D. Garnett, by power of attorney 2020-07-06