Form 4: Guidewire CEO Sells Shares Under 10b5-1 Plan

Guidewire Software, Inc. CEO Michael George Rosenbaum has sold 1,200 shares of common stock under a pre-arranged trading plan.

Summary

• Michael George Rosenbaum, CEO of Guidewire Software, Inc., sold 1,200 shares of common stock on April 6, 2026.
• The sale was executed at a price of $151.14 per share.
• This transaction was made automatically under a Rule 10b5-1 trading plan adopted by Mr. Rosenbaum on October 14, 2025.
• Following this transaction, Mr. Rosenbaum beneficially owns 217,606 shares of common stock directly.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. The sale was executed under a pre-arranged plan, indicating it was likely planned in advance and not a reaction to non-public information.

Negatives

• CEO sale of company stock, even under a pre-arranged plan, can sometimes be perceived negatively by the market.

Risks

• The sale was conducted under a Rule 10b5-1 plan, which is designed to mitigate insider trading concerns, but the act of selling by a key executive could still be interpreted as a lack of confidence by some investors.

Future Outlook

The filing does not contain forward-looking statements or guidance. It solely reports a past transaction.

Industry Context

StockSavvy.ai notes that insider sales, particularly by CEOs, are common and often executed under Rule 10b5-1 plans to diversify holdings or meet financial obligations. The context of the broader market and Guidewire's specific performance would be needed to fully assess the implications of this sale.

Stakeholder Impact

• Shareholders: May interpret the sale as a minor negative signal, though mitigated by the 10b5-1 plan. The impact is likely limited given the relatively small number of shares sold compared to the CEO's total holdings.
• Employees: The sale by the CEO is unlikely to have a direct impact on employees.
• Creditors: No direct impact expected.
• Suppliers: No direct impact expected.
• Customers: No direct impact expected.

Next Steps

• Continued monitoring of insider transactions for any further sales or purchases by Guidewire management.

Key Dates

Keywords

Guidewire Software, GWRE, Form 4, Insider Trading, 10b5-1 Plan, Stock Sale, CEO, Michael George Rosenbaum, Beneficial Ownership