Form 4: Guidewire CEO Michael Rosenbaum Executes Stock Sale

Guidewire Software CEO Michael Rosenbaum sold 1,200 shares of common stock under a pre-arranged 10b5-1 trading plan.

Summary

• CEO Michael Rosenbaum sold 1,200 shares of Guidewire Software common stock.
• The transaction occurred on June 8, 2026, at a price of $135.62 per share.
• The sale was executed automatically pursuant to a Rule 10b5-1 trading plan adopted on October 14, 2025.
• Following the transaction, the CEO retains beneficial ownership of 206,806 shares.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the sale was pre-planned and represents a negligible portion of the executive's total holdings.

Positives

• The sale was conducted via a pre-established 10b5-1 plan, indicating the transaction was non-discretionary and planned well in advance.

Negatives

• The transaction represents a reduction in the CEO's direct equity stake in the company.

Risks

• Insider selling can sometimes be perceived negatively by retail investors, regardless of the pre-planned nature of the sale.

Future Outlook

No forward-looking guidance or strategic outlook was provided in this regulatory filing.

Industry Context

StockSavvy.ai notes that routine 10b5-1 sales by C-suite executives are standard corporate practice for liquidity and diversification, and generally do not signal a change in company fundamentals.

Comparison to Industry Standards

• The use of 10b5-1 plans is the industry standard for executives to sell shares while avoiding potential accusations of insider trading.
• The volume of shares sold (1,200) is immaterial relative to the CEO's total holdings (206,806), representing less than 1% of his position.

Stakeholder Impact

• Minimal impact on shareholders as the sale was executed under a pre-existing, non-discretionary plan.

Next Steps

• No future actions or milestones were disclosed in this filing.

Key Dates

Keywords

Guidewire Software, GWRE, Insider Trading, Form 4, CEO, Stock Sale