Michael George Rosenbaum, Chief Executive Officer and Director of Guidewire Software, Inc., filed a Form 4 on November 2, 2026, reporting the sale of 1,200 shares of common stock on that same date.

Key Highlights

  • Reporting person: Michael George Rosenbaum, Chief Executive Officer and Director of Guidewire Software, Inc. (NYSE:GWRE)
  • Transaction: Disposition of 1,200 shares of common stock on November 2, 2026, at a price of $160.16 per share
  • Transaction code: S (sale), marked as executed pursuant to a Rule 10b5-1 trading plan
  • 10b5-1 plan: The filing states the sale was an automatic sale pursuant to a 10b5-1 Trading Plan adopted by Rosenbaum on October 14, 2025
  • Remaining ownership: Following the transaction, Rosenbaum directly beneficially owned 272,466 shares of common stock
  • Filed by: Winston King, Attorney-in-Fact for Michael George Rosenbaum

CEO Rosenbaum's November 2026 Share Sale Under Pre-Established Plan

According to the filing, Michael George Rosenbaum, who serves as both Chief Executive Officer and Director of Guidewire Software, Inc. (NYSE:GWRE), disposed of 1,200 shares of the company's common stock on November 2, 2026. The shares were sold at a price of $160.16 each, as reported in Table I of the Form 4. The transaction is classified with code "S," indicating an open-market sale.

The filing discloses that the sale was conducted automatically under a 10b5-1 Trading Plan that Rosenbaum adopted on October 14, 2025. The form indicates that the box was checked confirming the transaction was made pursuant to a contract, instruction, or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). Following the reported transaction, Rosenbaum's direct beneficial ownership of Guidewire Software common stock stood at 272,466 shares, according to the filing.

No derivative securities transactions were reported in Table II. The form was signed by Winston King as Attorney-in-Fact for Michael George Rosenbaum and was dated November 2, 2026. No amendment date was listed, indicating this is an original filing.

What Was Disclosed

The Form 4 filed November 2, 2026, reported a single sale of 1,200 shares of Guidewire Software common stock by CEO Michael George Rosenbaum at $160.16 per share, executed under a pre-established 10b5-1 plan adopted October 14, 2025, leaving him with 272,466 shares directly held.