X0306 4 2022-01-07 0 0001069258 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. KTOS 0001094718 Lund Deanna H 10680 TREENA STREET, SUITE 600 SAN DIEGO CA 92131 1 1 0 0 EVP & CFO Common Stock 2022-01-07 4 F 0 26234 19.98 D 279281 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 16,626 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 17,512 shares held through Issuer's 401(k) Plan. Deanna H. Lund, by Eva Yee, Attorney-In-Fact 2022-01-07