RADIAN GROUP INC

Except as described below, none of the directors or officers (as defined in Rule 16a-1(f) promulgated under the Exchange Act) of the Company adopted orterminated any Rule 10b5-1 trading arrangement or any non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of Regulation S-K) during the period covered by this Report.

On August 27, 2024, Richard G. Thornberry, our Chief Executive Officer, entered into a Rule 10b5-1 trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Securities Exchange Act of 1934, as amended, and the Company’s policies regarding transactions in Company securities. Under the trading plan, Mr. Thornberry may sell up to a maximum aggregate number of 240,000 shares of the Company’s common stock, with sales occurring at prevailing market prices (subject to a price threshold) on set dates through theexpirationof the plan on November 26, 2025, or the earlier completion of all sales under the plan. As of September 30, 2024, Mr. Thornberry beneficially owned (as determined in accordance with Section 16 of the Exchange Act of 1934)929,452 shares of the Company’s common stock (“Directly Held Shares”) and also is entitled to receive 271,999 shares (prior to tax withholding upon distribution) on May 15, 2025, upon the completion of aone-year, post-vest holding period on performance-based RSUs (“Vested PSU Shares”). As of September 30, 2024, the value of Mr. Thornberry’s Directly Held Shares and Vested PSU Shares together equaled approximately 42 times his base salary.