144 0001443092 XXXXXXXX LIVE 0001753539 BlackSky Technology Inc. 001-39113 2411 Dulles Corner Park Suite 300 Herndon VA 20171 5712307163 Brian O'Toole officer Class A Common Stock Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004 56497 1172312 1063179 09/11/2026 NYSE Class A Common Stock 09/10/2026 Restricted Share Units Vesting - See Remarks. Issuer N 118994 09/10/2026 Equity Compensation N Brian O'Toole 2411 Dulles Corner Park Suite 300 Herndon VA 20171 Class A Common Stock 06/10/2026 15512 528959 Brian O'Toole 2411 Dulles Corner Park Suite 300 Herndon VA 20171 Class A Common Stock 09/09/2026 20000 436600 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/ Brian O'Toole