X0306 4 2022-04-20 0 0001121142 Maxar Technologies Inc. MAXR 0001773423 Lee James CI 1300 W. 120TH AVENUE WESTMINSTER CO 80234 0 1 0 0 SVP, General Counsel & Secty Common Stock 2022-04-20 4 A 0 31040 0.00 A 121868 D Common Stock 2022-04-20 4 F 0 15390 39.46 D 106478 D On April 20, 2022 the Compensation Committee of the Board of Directors of the Issuer determined the attainment of the relative total stockholder return and adjusted cash leverage performance goals underlying the performance stock units. Represents shares issued pursuant to settlement of performance stock units. Amount reported includes 48,395 unvested restricted stock units. Amount reported includes 212 shares purchased in the ESPP on April 14, 2022. Shares withheld by the issuer to satisfy tax withholding obligations upon vesting of performance stock units; not an open market transaction. /s/ Patricia Lamm, attorney-in-fact for James Lee 2022-04-22