X0306 4 2020-02-10 0 0001439095 MRC GLOBAL INC. MRC 0001671332 Stein Robert Wayne FULBRIGHT TOWER, 1301 MCKINNEY ST., SUITE 2300 HOUSTON TX 77010 0 1 0 0 SVP - Business Development Common Stock 2020-02-10 4 A 0 13970 0.00 A 82804 D Common Stock 2020-02-10 4 A 0 9990 0.00 A 92794 D Common Stock 2020-02-10 4 F 0 3828 10.80 D 88966 D Common Stock 2020-02-11 4 F 0 1533 11.12 D 87433 D Common Stock 2020-02-10 4 A 0 1031 0.00 A 5414 I By Spouse Common Stock 2020-02-11 4 F 0 175 11.12 D 5239 I By Spouse On February 10, 2020, the reporting person received 13,970 Restricted Stock Units (the "February 2020 Annual Grant"). Each Restricted Stock Unit represents a contingent right to receive one share of the issuer's Common Stock. 34% of the February 2020 Annual Grant will vest on February 10, 2021 and 33% of the February 2020 Annual Grant will vest on each of February 10, 2022 and February 10, 2023, 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. The reporting person surrendered these shares to satisfy tax withholding obligations resulting from the vesting of certain Restricted Stock Units of the issuer's Common Stock. On February 10, 2020, the reporting person received 1,031 Restricted Stock Units through his spouse (the "Spouse February 2020 Annual Grant"). Each Restricted Stock Unit represents a contingent right to receive one share of the issuer's Common Stock. 34% of the Spouse February 2020 Annual Grant will vest on February 10, 2021 and 33% of the Spouse February 2020 Annual Grant will vest on each of February 10, 2022 and February 10, 2023, each conditioned on the spouse's continued service with the issuer and subject to accelerated vesting under certain circumstances. The reporting person's spouse surrendered these shares to satisfy tax withholding obligations resulting from the vesting of certain Restricted Stock Units of the issuer. /s/ Ann D. Garnett, by power of attorney 2020-02-12