X0306 4 2023-02-06 0 0001439095 MRC GLOBAL INC. MRC 0001673745 Youngblood Kelly 1301 MCKINNEY STREET, SUITE 2300 HOUSTON TX 77010 0 1 0 0 See Remarks Common Stock 2023-02-06 4 A 0 57472 0.00 A 309540 D On February 6, 2023, the reporting person received 57,472 Restricted Stock Units (the "February 2023 Grant"). Each Restricted Stock Unit represents a contingent right to receive one share of the issuer's Common Stock. 34% of the February 2023 Grant will vest on February 6, 2024 and 33% of the February 2023 Grant will vest on each of February 6, 2025 and February 6, 2026, each conditioned on the reporting person's continued service with the issuer and subject to accelerated vesting under certain circumstances. Executive Vice President and Chief Financial Officer /s/ Ann D. Garnett, by power of attorney 2023-02-08