X0306 4 2022-02-28 0 0001121142 Maxar Technologies Inc. MAXR 0001773027 Robertson III Jeff 1300 W. 120TH AVENUE WESTMINSTER CO 80234 0 1 0 0 SVP, Chief Operations Officer Common Stock 2022-02-28 4 A 0 14340 0.00 A 119416 D Common Stock 2022-02-28 4 F 0 4144 32.44 D 115272 D Common Stock 2022-02-28 4 F 0 1755 32.44 D 113517 D On February 28, 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 54,144 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. Shares withheld by the issuer to satisfy tax withholding obligations upon vesting of restricted stock units; not an open market transaction. Amount reported includes 48,042 unvested restricted stock units. /s/ Patricia Lamm, attorney-in-fact for Jeff Robertson III 2022-03-02