An amended statement of changes in beneficial ownership for Guidewire Software, Inc. (NYSE:GWRE), filed on August 26, 2026, discloses that President John P. Mullen sold a combined 18,000 shares of common stock across two separate transactions on August 19 and August 25, 2026.

Key Highlights

  • First sale: John P. Mullen disposed of 16,200 shares of Guidewire Software common stock on August 19, 2026, at a price of $185 per share.
  • Second sale: An additional 1,800 shares were sold on August 25, 2026, at a price of $188.46 per share.
  • Remaining ownership: Following both transactions, Mullen directly beneficially owned 113,115 shares of common stock.
  • Trading plan: Both sales were executed pursuant to a Rule 10b5-1 trading plan adopted on October 14, 2025, and amended on January 13, 2026.
  • Amendment: This filing is an amendment to an original statement filed on August 20, 2026.

President's Share Sales at Guidewire Software Conducted Under Pre-Set Trading Plan

According to the filing, John P. Mullen, who serves as President of Guidewire Software, Inc., a provider of cloud-based software for the property and casualty insurance industry, reported two dispositions of common stock. The first transaction, dated August 19, 2026, involved the sale of 16,200 shares at $185 each, leaving him with 114,915 directly held shares after that transaction. The second transaction, dated August 25, 2026, involved the sale of 1,800 shares at $188.46 each, reducing his direct beneficial ownership to 113,115 shares.

The filing identifies both sales with transaction code "S" and notes that each was carried out automatically under a Rule 10b5-1 trading plan. According to the filing's explanation of responses, the plan was "adopted by the Reporting Person on October 14, 2025, as amended January 13, 2026." Rule 10b5-1 plans allow corporate insiders to establish pre-scheduled trading arrangements at a time when they are not in possession of material non-public information. No derivative securities transactions were reported in this filing. The document was signed by Winston King as attorney-in-fact for John P. Mullen and submitted on August 26, 2026.

What Was Disclosed

The amended filing reports that Guidewire Software President John P. Mullen sold a total of 18,000 shares of common stock on August 19 and August 25, 2026, under a pre-established Rule 10b5-1 trading plan, with direct beneficial ownership standing at 113,115 shares after both sales.