X0306 4 2022-02-24 0 0001121142 Maxar Technologies Inc. MAXR 0001544511 JABLONSKY DANIEL L 1300 W. 120TH AVENUE WESTMINSTER CO 80234 1 1 0 0 President and CEO Common Stock 2022-02-24 4 A 0 80329 0.00 A 461138 D Represents Restricted Stock Units (RSUs) which are scheduled to vest over three years, subject to the Reporting Person's continued employment, as follows: 33% on the first and second anniversaries of the vesting commencement date and 34% on the third anniversary of the vesting commencement date. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock pursuant to the Maxar Technologies Inc. 2019 Incentive Award Plan. Amount reported includes 247,703 unvested restricted stock units. Amount reported includes 142 shares purchased from Maxar's ESPP plan in July 2021. /s/ Patricia Lamm, attorney-in-fact for Daniel L. Jablonsky 2022-02-28