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

Guidewire Software CEO Michael George Rosenbaum executed a pre-planned sale of 1,200 common shares at $160 per share.

Summary

• Michael George Rosenbaum, Chief Executive Officer and Director of Guidewire Software, Inc. (GWRE), sold 1,200 shares of the company's common stock.
• The transaction occurred on March 16, 2026, with the shares sold at a price of $160 per share.
• This sale was an automatic transaction executed pursuant to a Rule 10b5-1 trading plan, which Mr. Rosenbaum adopted on October 14, 2025.
• Following this reported transaction, Mr. Rosenbaum beneficially owns 225,943 shares of Guidewire Software common stock.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. The sale is a pre-planned transaction under a 10b5-1 plan, which typically indicates a non-discretionary action rather than a reaction to new company information.

Positives

• The sale was executed under a pre-arranged 10b5-1 trading plan, indicating a planned and non-discretionary transaction rather than an immediate reaction to new, potentially negative, information.

Negatives

• An insider sale, even if pre-planned, reduces the CEO's direct ownership stake in the company.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Industry Context

StockSavvy.ai notes that routine insider sales executed under 10b5-1 plans are common practice for executives to manage personal finances and diversify holdings without implying a negative outlook on the company's future. This transaction for Guidewire Software's CEO aligns with typical executive compensation and liquidity strategies within the software industry.

Related Party Transactions

• The sale of 1,200 shares of common stock by Michael George Rosenbaum, the CEO and a Director, constitutes a related party transaction as it involves an insider of the company.

Stakeholder Impact

• Shareholders: The sale represents a minor reduction in the CEO's direct ownership, which could be viewed neutrally given the 10b5-1 plan, but it does not directly impact other shareholders' holdings or rights.
• Employees: No direct impact on employees is indicated by this filing.
• Customers/Suppliers/Creditors: No direct impact on these stakeholders is indicated by this filing.

Key Dates

Recommendation

The transaction is a routine, pre-planned insider sale under a 10b5-1 plan and does not provide new material information about Guidewire Software's operational performance or future prospects. Such a transaction typically does not warrant a change in investment thesis, thus a 'hold' recommendation is appropriate based solely on this filing.

Keywords

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