Rosenbaum Michael George sold $10.6M of GWRE
Rosenbaum Michael George (Chief Executive Officer) sold 73,490 shares of Guidewire Software, Inc. (GWRE) at an average of $144.50 ($144.47–$145.92, $10.62M total) across 2 trades over 2026-09-17 to 2026-09-21 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The sale reduces insider ownership and may affect market perception of management confidence.
Market read
Primary disclosure of a sizable insider sell; relevant for traders monitoring insider activity.
What to watch
Potential upcoming earnings or strategic moves not disclosed yet.
Background
SEC Form 4 filing discloses insider transactions; the CEO used a pre‑arranged 10b5‑1 plan.
Ticker impact
CEO Michael George Rosenbaum sold 73,490 shares for $10.6M via a 10b5‑1 plan, reducing his stake to 279,666 shares.
Potential short‑term downward pressure on GWRE stock.
Large $10M sale by the top executive is material, but no accompanying corporate event suggests limited immediate impact.
Market effects
May prompt scrutiny of other software‑sector insiders.
Limited to US equity markets where GWRE trades.
Low; impact confined to GWRE investors.
Counterpoint
Insider sell could be routine liquidity management, not a bearish signal.
Key entities
- CompanyGuidewire Software, Inc.
Provider of core system software for the property‑and‑casualty insurance industry.
- ExecutiveMichael George Rosenbaum
Chief Executive Officer of Guidewire.



