X0306 4 2022-04-20 0 0001121142 Maxar Technologies Inc. MAXR 0001463486 Scott Walter S. 1300 W. 120TH AVENUE WESTMINSTER CO 80234 0 1 0 0 EVP and CTO Common Stock 2022-04-20 4 A 0 74508 0.00 A 381279 D Common Stock 2022-04-20 4 F 0 32712 39.46 D 348567 D Common Stock 25820 I By Trust 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 93,595 unvested restricted stock units. Shares withheld by the issuer to satisfy tax withholding obligations upon vesting of performance stock units; not an open market transaction. Walter S. Scott and Diane Scott TTEES The Walter and Diane Scott Living Trust DTD 3-19-00. /s/ Patricia Lamm, attorney-in-fact for Walter S. Scott 2022-04-22