X0306 4 2023-03-14 0 0001121142 Maxar Technologies Inc. MAXR 0001233526 ZAHLER ERIC J 1300 W. 120TH AVENUE WESTMINSTER CO 80234 1 0 0 0 Common Stock 2023-03-14 4 S 0 5000 50.95 D 31238 D Common Stock 2023-03-15 4 S 0 5000 50.8003 D 26238 D Common Stock 2023-03-15 4 S 0 5060 50.7999 D 21178 D Amount reported includes 3,801 unvested restricted stock units. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.80 to $50.81, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.805 to $50.79, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Patricia Lamm, attorney-in-fact for Eric J. Zahler 2023-03-16