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

Guidewire Software CEO Michael George Rosenbaum sold 1,200 shares of common stock for $145.74 per share under a pre-arranged 10b5-1 trading plan.

Summary

• Michael George Rosenbaum, Chief Executive Officer and Director of Guidewire Software, Inc. (GWRE), disposed of 1,200 shares of common stock.
• The transaction occurred on March 30, 2026, at a price of $145.74 per share.
• This sale was executed automatically pursuant to a Rule 10b5-1 trading plan adopted on October 14, 2025.
• Following the transaction, Rosenbaum directly owns 218,806 shares of Guidewire Software common stock.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as it represents a pre-planned transaction under a 10b5-1 plan, which is a common and expected practice for executives.

Positives

• The sale was conducted under a pre-arranged 10b5-1 trading plan, indicating a planned transaction rather than an immediate reaction to market conditions.

Negatives

• An insider sale, even if pre-planned, reduces the direct ownership stake of a key executive.

Future Outlook

No forward-looking statements or guidance are provided in this Form 4 filing, as it primarily reports a past transaction.

Industry Context

StockSavvy.ai notes that insider sales under 10b5-1 plans are common practice for executives to manage personal finances and diversify holdings while adhering to insider trading regulations. This particular transaction for Guidewire Software's CEO is a routine disclosure.

Comparison to Industry Standards

• Insider sales under 10b5-1 plans are a standard practice across the technology and software industry for executives at companies like Salesforce, Microsoft, and Oracle, allowing for pre-scheduled stock transactions to avoid accusations of trading on material non-public information.
• The volume of shares sold by Guidewire's CEO is relatively small compared to his total holdings, which is typical for such plans and generally does not indicate a change in company fundamentals.

Stakeholder Impact

• Shareholders: A minor reduction in direct insider ownership, but under a pre-planned mechanism that is generally not indicative of a change in company prospects.

Key Dates

Recommendation

The transaction is a routine, pre-planned insider sale under a 10b5-1 plan, which typically does not signal a change in the company's fundamental outlook or warrant a change in investment recommendation. It's a common practice for executives to manage personal liquidity and diversification.

Keywords

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