X0306 4 2022-01-07 0 0001069258 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. KTOS 0001080997 MILLS THOMAS E IV 10680 TREENA STREET, SUITE 600 SAN DIEGO CA 92131 0 1 0 0 President, C5ISR Div. Common Stock 2022-01-07 4 F 0 4489 19.98 D 33795 D Shares withheld in a net transaction to satisfy the minimum tax liability, in accordance with Issuer's trading policies, in connection with shares vested January 4, 2022 from performance restricted stock units granted in 2019 as reported on a Form 4 filed January 5, 2022 and released January 7, 2022. Includes 9,700 shares held through Issuer's 401(k) Plan. Thomas E. Mills, by Eva Yee, Attorney-In-Fact 2022-01-07