Guidewire Software President Executes $999K Routine 10b5-1 Stock Sale

Executive Summary

On October 20, 2026, John P. Mullen, President of Guidewire Software, Inc. ($GWRE), completed an open-market sale of 5,400 shares of common stock at a price of $185.00 per share, generating gross proceeds of $999,000.00.

Transaction Details

• Security: Common Stock
• Transaction Code: S (Open-market sale)
• Shares Sold: 5,400
• Execution Price: $185.00
• Total Consideration: $999,000.00
• Post-Transaction Direct Holdings: 178,247 shares

Plan and Context

The transaction was executed pursuant to an established Rule 10b5-1 trading plan initially adopted on October 14, 2025, and amended on January 13, 2026. Following the sale, Mr. Mullen continues to hold a substantial direct stake of 178,247 shares, representing a sale of approximately 2.9% of his pre-transaction equity holdings.

Trading Significance

The trading significance is assessed as Low. While the gross proceeds near $1 million, the transaction was executed under a pre-established 10b5-1 plan, represents a minor percentage of the insider's total equity position, and reflects standard portfolio diversification rather than an unscripted sentiment-driven move.