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SEC EDGARSEP 211 min read$GWRE

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.

Original reporting
SEC EDGAR · Rosenbaum Michael George
Published Sep 21, 2026, 9:22 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 21, 2026, 9:59 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$GWRE
Bearish
medium confidence
Mentioned
$GWRE
Relevance
6/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$GWREBearishMed
01

Why it matters

The sale reduces insider ownership and may affect market perception of management confidence.

02

Market read

Primary disclosure of a sizable insider sell; relevant for traders monitoring insider activity.

03

What to watch

Potential upcoming earnings or strategic moves not disclosed yet.

Relevance 6/10Novelty 8/10Timing: after‑hours filing on Sep 21

Background

SEC Form 4 filing discloses insider transactions; the CEO used a pre‑arranged 10b5‑1 plan.

Company-level read

Ticker impact

$GWREBearishMedium confidence
Context

CEO Michael George Rosenbaum sold 73,490 shares for $10.6M via a 10b5‑1 plan, reducing his stake to 279,666 shares.

Expected impact

Potential short‑term downward pressure on GWRE stock.

Evidence & confidence

Large $10M sale by the top executive is material, but no accompanying corporate event suggests limited immediate impact.

Market effects

Sector

May prompt scrutiny of other software‑sector insiders.

Regional

Limited to US equity markets where GWRE trades.

Global

Low; impact confined to GWRE investors.

Counterpoint

What could challenge this read

Insider sell could be routine liquidity management, not a bearish signal.

Key entities

  • Company
    Guidewire Software, Inc.

    Provider of core system software for the property‑and‑casualty insurance industry.

  • Executive
    Michael George Rosenbaum

    Chief Executive Officer of Guidewire.

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

GWRE insider trading history →

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