X0508 4 2026-01-02 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 1 Common Stock 2026-01-02 4 S 0 800 75.325 D 247435 D Common Stock 2026-01-02 4 S 0 400 76.5175 D 247035 D Common Stock 2026-01-02 4 S 0 1796 78.0527 D 245239 D Common Stock 2026-01-02 4 S 0 1804 79.0405 D 243435 D Common Stock 2026-01-02 4 S 0 200 79.61 D 243235 D Common Stock 2026-01-03 4 M 0 15000 0 A 258235 D Common Stock 2026-01-03 4 F 0 7726 79.29 D 250509 D Common Stock 2026-01-03 4 M 0 15000 0 A 265509 D Common Stock 2026-01-03 4 F 0 7617 79.29 D 257892 D Common Stock 2026-01-03 4 M 0 15000 0 A 272892 D Common Stock 2026-01-03 4 F 0 7617 79.29 D 265275 D Common Stock 2026-01-04 4 M 0 15000 0 A 280275 D Common Stock 2026-01-04 4 F 0 7617 79.29 D 272658 D Common Stock 2026-01-04 4 M 0 15000 0 A 287658 D Common Stock 2026-01-04 4 F 0 7617 79.29 D 280041 D Restricted Stock Units 2026-01-03 4 A 0 75000 0 A Common Stock 75000 75000 D Restricted Stock Units 2026-01-03 4 M 0 15000 0 D Common Stock 15000 15000 D Restricted Stock Units 2026-01-03 4 M 0 15000 0 D Common Stock 15000 30000 D Restricted Stock Units 2026-01-03 4 M 0 15000 0 D Common Stock 15000 60000 D Restricted Stock Units 2026-01-04 4 M 0 15000 0 D Common Stock 15000 0 D Restricted Stock Units 2026-01-04 4 M 0 15000 0 D Common Stock 15000 45000 D This transaction was effected pursuant to a 10b5-1 trading plan adopted by the reporting person on May 20, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.95 to $75.70 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.26 to $76.90 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.56 to $78.40 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.57 to $79.51 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.60 to $79.62 inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. Each restricted stock unit (RSU) represents a contingent right to receive one share of Issuer's common stock. RSUs vest ratably on each of the first five anniversaries of the date of grant, unless earlier vested or terminated pursuant to the terms of the RSU agreement. RSUs were granted and previously reported on a Form 4 filed January 5, 2022, where 75,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2022 date of grant. RSUs were granted and previously reported on a Form 4 filed January 5, 2023, where 75,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2023 date of grant. RSUs were granted and previously reported on a Form 4 filed January 7, 2025, where 75,000 RSUs vest ratably on each of the first five anniversaries of the January 3, 2025 date of grant. RSUs were granted and previously reported on a Form 4 filed January 5, 2021, where 75,000 RSUs vest ratably on each of the first five anniversaries of the January 4, 2021 date of grant. RSUs were granted and previously reported on a Form 4 filed January 4, 2024, where 75,000 RSUs vest ratably on each of the first five anniversaries of the January 4, 2024 date of grant. 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. Includes 16,626 shares purchased through Issuer's Employee Stock Purchase Plan and approximately 19,654 shares held through Issuer's 401(k). Deanna H. Lund, by Eva Yee, Attorney-In-Fact 2026-01-06