Form 3 Filing for William Peter Wilson

This SEC filing details the initial ownership of securities by William Peter Wilson, President of the C5ISR Division at KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (KTOS). As of September 18, 2026, Wilson directly owns 27,696 shares of the company's common stock, which includes shares held through the company's 401(k) plan. The filing also discloses grants of Restricted Stock Units (RSUs) awarded on February 29, 2024, April 28, 2025, and May 20, 2026. These RSUs, each representing a contingent right to one share of common stock, vest ratably over three years from their respective grant dates. Specifically, 8,796 RSUs were granted in 2024, 12,000 in 2025, and 24,000 in 2026. The reporting signature date is September 28, 2026.