Guidewire Software CEO Michael Rosenbaum Sells $183K in Stock via 10b5-1 Plan
Guidewire Software, Inc.
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Filing Summary
### Guidewire Software, Inc. (GWRE) Form 4 Insider Sale
**Insider:** Michael George Rosenbaum (Chief Executive Officer, Director)
**Transaction Date:** October 5, 2026
**Type:** Sale (Code: S)
**Shares Sold:** 1,200 @ $152.52
**Total Value:** $183,024.00
**Shares Remaining:** 277,266 (Direct)
**Note:** Executed under a pre-established Rule 10b5-1 trading plan adopted October 14, 2025.
Comprehensive Analysis
Executive Summary
On October 5, 2026, Michael George Rosenbaum, Chief Executive Officer and Director of Guidewire Software, Inc. ($GWRE), executed an open-market sale of 1,200 shares of Common Stock at an average price of $152.52 per share. The transaction amounted to a total gross value of approximately $183,024.
Transaction Details & Rule 10b5-1 Plan
- Security: Common Stock
- Shares Sold: 1,200 shares
- Execution Price: $152.52
- Gross Proceeds: $183,024.00
- Pre-Arranged Plan: The transaction was conducted automatically pursuant to a pre-arranged Rule 10b5-1 trading plan established on October 14, 2025.
Post-Transaction Holdings
Following the transaction, Mr. Rosenbaum continues to directly hold 277,266 shares of Guidewire Software Common Stock. The shares disposed of represent approximately 0.43% of his total reported direct equity holdings.
Market & Trading Significance
The filing carries Low trading significance. The sale is relatively modest in dollar value and represents a minor fraction of the CEO's overall direct holdings. Because it was executed in accordance with a Rule 10b5-1 trading plan adopted nearly a year prior, it reflects routine portfolio management rather than a discretionary market-timing decision.
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Important Disclaimer
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