144 0001349983 XXXXXXXX LIVE 0001753539 BlackSky Technology Inc 001-39113 2411 Dulles Corner Park Suite 300 Herndon VA 20171 703-935-1930 Henry Dubois Officer Class A Common Stock Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004 15284 317743 482872 09/11/2026 NYSE Class A Common Stock 09/10/2026 Restricted Share Units Vesting - See Remarks. Issuer N 32185 09/11/2026 Equity Compensation N Henry Dubois 2411 Dulles Corner Park Suite 300 Herndon VA 20171 Class A Common Stock 06/10/2026 14749 502941 Henry Dubois 2411 Dulles Corner Park Suite 300 Herndon VA 20171 Class A Common Stock 08/28/2026 4000 95120 The reporting person sold the securities reported herein pursuant to an Issuer-implemented, non-discretionary sell-to-cover arrangement for the purposes of satisfying income tax liabilities incurred upon vesting of restricted share unit awards only, unless the reporting person elects to pay such tax liabilities in cash. 09/10/2026 /s/ Henry Dubois