X0306 4 2022-01-07 0 0001069258 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. KTOS 0001342017 Rock Stacey G 10680 TREENA STREET, SUITE 600 SAN DIEGO CA 92131 0 1 0 0 President, KTT Division Common Stock 2022-01-07 4 F 0 4426 19.98 D 36525 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 591 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 10,822 shares held through Issuer's 401(k) Plan. Stacey G. Rock, by Eva Yee, Attorney-In-Fact 2022-01-07