Notice of Sale of Securities by Chief Accounting Officer

David Franklin Peterson, Chief Accounting Officer of Guidewire Software, Inc. (GWRE), reported a sale of 246 shares of common stock on June 16, 2026. The shares were sold at a price of $118.743 per share, resulting in a post-transaction holding of 12,287 shares. The sale was conducted to cover taxes associated with the settlement of Restricted Stock Units, as indicated by footnote F1.