Form 4: Guidewire CEO Sells Shares Under 10b5-1 Plan
Statement of Changes in Beneficial Ownership
Guidewire Software, Inc. CEO Michael George Rosenbaum reported the sale of 1,200 shares of common stock on May 26, 2026, executed under a pre-arranged 10b5-1 trading plan.
Summary
- Michael George Rosenbaum, CEO of Guidewire Software, Inc., sold 1,200 shares of common stock on May 26, 2026.
- The transaction was conducted automatically under a Rule 10b5-1 trading plan adopted on October 14, 2025.
- The sale price was $138.51 per share.
- Following this transaction, Mr. Rosenbaum beneficially owns 209,206 shares of common stock directly.
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as a neutral filing, as the sale was conducted under a pre-established 10b5-1 plan, mitigating concerns about opportunistic insider trading.
Negatives
- Insider selling, even if pre-planned, can sometimes be perceived negatively by the market.
Future Outlook
The filing does not contain forward-looking statements or guidance.
Industry Context
StockSavvy.ai notes that Form 4 filings, particularly those involving sales by C-suite executives, are closely watched by investors. The use of a 10b5-1 plan indicates a structured approach to managing personal stock holdings, often implemented to avoid concerns about insider trading, but the actual sale itself can still influence market perception.
Corporate Governance
| Change Type | Description | Effective Date | Impact Assessment |
|---|---|---|---|
| 10b5-1 Trading Plan | The transaction was executed under an automatic sale pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person. | 10/14/2025 | This plan allows for the sale of securities at pre-determined times or prices, providing an affirmative defense against allegations of insider trading. |
Stakeholder Impact
- Shareholders: The sale of shares by the CEO, even under a 10b5-1 plan, may lead to short-term investor scrutiny. However, the pre-planned nature and the CEO's continued substantial ownership suggest no immediate negative impact on shareholder confidence.
Key Dates
| Date | Description |
|---|---|
| 10/14/2025 | Date the Rule 10b5-1 Trading Plan was adopted by the Reporting Person. |
| 05/26/2026 | Date of the transaction (sale of common stock). |
Keywords
Guidewire Software, GWRE, Form 4, Insider Trading, 10b5-1 Plan, Stock Sale, CEO, Michael George Rosenbaum
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