X0306 4 2012-12-14 0 0001069258 KRATOS DEFENSE & SECURITY SOLUTIONS, INC. KTOS 0001082440 DEMARCO ERIC M 4820 EASTGATE MALL SAN DIEGO CA 92121 1 1 0 0 President & CEO Common Stock 2012-12-14 4 P 0 13710 4.741 A 188882 D Open market acquisition of Issuer's common stock purchased in accordance with Issuer's insider trading policies. Includes 6,253 shares held in Issuer's 401(k) Plan and 9,296 shares purchased through Issuer's Employee Stock Purchase Plan. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.70 to 4.79 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 purchased at each separate price within the ranges set forth in this footnote to this Form 4. Eric DeMarco, by Eva Yee, Attorney-In-Fact 2012-12-18