Rosenbaum Michael George sold $171K of GWRE
Rosenbaum Michael George (Chief Executive Officer) sold 1,200 shares of Guidewire Software, Inc. (GWRE) at $142.65 ($0.17M total) on 2026-09-28 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The disclosed sale is modest in size and likely to have limited price impact.
Market read
A small insider sale reported via a Form 4, offering limited trading relevance.
What to watch
Potential tax planning or diversification motives behind the 10b5‑1 sale.
Background
Form 4 filings disclose insider transactions and are primary sources for such events.
Ticker impact
CEO Michael George Rosenbaum sold 1,200 shares for $171,180 via a 10b5-1 plan, reducing his stake to 278,466 shares.
likely slight downward pressure as market prices in the insider sale
The sale is relatively small for a mid‑cap and executed under a pre‑arranged plan, limiting immediate impact.
Market effects
Minimal effect on the software sector.
None
None
Counterpoint
The sale could be viewed as a routine liquidity event with no material insight into company fundamentals.
Key entities
- CompanyGuidewire Software, Inc.
Provider of core system software for the insurance industry.
- PersonMichael George Rosenbaum
Chief Executive Officer of Guidewire Software.



