A Form 4 filed on October 27, 2026 disclosed that John P. Mullen, President of Guidewire Software, Inc., sold 1,800 shares of common stock on October 26, 2026 under a Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: John P. Mullen, President of Guidewire Software, Inc.
  • Transaction: Disposition (sale) of 1,800 shares of common stock on October 26, 2026
  • Sale price: $187.19 per share
  • Remaining holdings: 176,447 shares of common stock held directly following the transaction
  • Trading plan: Sale made pursuant to a 10b5-1 trading plan adopted October 14, 2025, as amended January 13, 2026

Mullen's October 2026 Share Sale Under 10b5-1 Plan

According to the filing, John P. Mullen, identified as President of Guidewire Software, Inc. (NYSE:GWRE), disposed of 1,800 shares of Guidewire common stock on October 26, 2026 at a price of $187.19 per share. The transaction was coded "S" in the filing, indicating an open-market sale. The filing notes that the transaction was carried out directly, with no indirect ownership arrangement reported for this sale.

The filing discloses that the sale was "automatic" and executed pursuant to a Rule 10b5-1 trading plan that Mullen originally adopted on October 14, 2025, and subsequently amended on January 13, 2026. Rule 10b5-1 plans allow corporate insiders to establish pre-scheduled trading arrangements at a time when they are not aware of material non-public information. The filing checks the box indicating the transaction satisfies the affirmative defense conditions of Rule 10b5-1(c).

Following the reported sale, the filing states that Mullen beneficially owns 176,447 shares of Guidewire common stock directly. No derivative securities transactions were reported in Table II of the filing. The Form 4 was signed by Winston King, Attorney-in-Fact for John P. Mullen, and filed on October 27, 2026.

What Was Disclosed

Guidewire Software President John P. Mullen filed a Form 4 reporting the sale of 1,800 shares of common stock at $187.19 on October 26, 2026, executed automatically under a pre-existing 10b5-1 plan, leaving him with 176,447 shares held directly.