X0508 4 2026-03-01 0 0001069258 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. KTOS 0001082440 DEMARCO ERIC M 10680 TREENA STREET, SUITE 600 SAN DIEGO CA 92131 1 1 0 0 President & CEO 0 Common Stock 2026-03-01 4 M 0 100000 0 A 832604 I by trust Common Stock 2026-03-01 4 F 0 39350 86.18 D 793254 I by trust Common Stock 2026-03-01 4 M 0 30000 0 A 823254 I by trust Common Stock 2026-03-01 4 F 0 11805 86.18 D 811449 I by trust Common Stock 62302 D Restricted Stock Units 2026-03-01 4 M 0 100000 0 D Common Stock 100000 0 D Restricted Stock Units 2026-03-01 4 M 0 30000 0 D Common Stock 30000 120000 D Each restricted stock unit (RSU) represents a contingent right to receive one share of Issuer's common stock. RSUs were granted and previously reported on a Form 4 filed January 5, 2016, which were released after a 5-year deferral period after the vest date. RSUs were granted and previously reported on a Form 4 filed January 6, 2020, which were released after a 5-year deferral period after the vest date. Shares withheld in a net transaction to satisfy the tax liability, in accordance with Issuer's trading policies, in connection with shares vested as reported in this Form 4. RSUs were granted to Reporting Person, and per Reporting Person's instructions, the common stock from such released RSUs were issued to Reporting Person's trust. In addition to the 811,449 shares and 62,302 shares reported in Column 5, as of March 1, 2026, 1,007,500 deferred RSUs granted to Mr. DeMarco, representing non-qualified deferred compensation, have vested but remain subject to a previously agree to 5-year deferral period before issuance and release, which substantially all subject RSUs are scheduled to be released by January 2029. An additional 600,000 RSUs granted to Mr. DeMarco are currently unvested and will only vest upon achievement of applicable vesting terms described in our proxy statement on Schedule 14A filed with the SEC on April 4, 2025. In addition, 300,000 RSUs were granted January 3, 2026, where 150,000 RSUs vest ratably over a five-year period, and the other 150,000 are performance-based RSUS that vest when certain performance criteria are met (similar to the vesting terms described in the April 4, 2025 proxy statement). Each RSU represents a contingent right to receive one share of the Company's common stock. Includes 43,674 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 18,628 shares held through Issuer's 401(k). Eric M. DeMarco, by Eva Yee, Attorney-In-Fact 2026-03-03