Hill John W sold $106K of CSGP

Hill John W sold 3,500 shares of COSTAR GROUP, INC. (CSGP) at $30.21 ($0.11M total) on 2026-08-05.

Original reporting
SEC EDGAR · Hill John W
Published Aug 10, 2026, 8:06 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 10, 2026, 8:12 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.
AlphAI market briefInsider activity
Primary signal
$CSGP
Neutral
low confidence
Mentioned
$CSGP
Relevance
4/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$CSGPNeutralLow
01

Why it matters

Traders may monitor insider selling as a sentiment input, but this disclosure alone does not change CoStar’s operating outlook or capital structure based on the provided text.

02

Market read

A director open-market sale was disclosed, but the filing contains no new company fundamentals or market-moving event details.

03

What to watch

The article lacks context on total holdings, prior sales cadence, and whether the sale was tax-related or part of a broader diversification plan.

Relevance 4/10Novelty 3/10Timing: filed 2026-08-10 after-hours; transaction dated 2026-08-05

Background

The article is a primary-source SEC Form 4 insider transaction disclosure for CoStar Group, Inc.

Company-level read

Ticker impact

$CSGPNeutralLow confidence
Context

CoStar Group director Hill John W filed a Form 4 open-market sale of 3,500 shares at $30.21 on 2026-08-05.

Expected impact

Likely limited, short-lived sentiment impact; no clear directional signal beyond routine insider activity.

Evidence & confidence

The filing is a single director open-market sale with disclosed price and size, but the article provides no accompanying company news, guidance change, or enforcement/regulatory development.

Market effects

No sector read-through is provided; this appears to be company-specific insider activity only.

None indicated.

None indicated.

Counterpoint

Insider sales are often planned for diversification or liquidity needs; without a stated 10b5-1 plan, the sale still may not imply negative fundamentals.

Key entities

  • CSGP

    CoStar Group, Inc., the issuer of the Form 4 insider transaction.

  • Hill John W

    Director of CoStar Group who sold 3,500 shares in an open-market sale.

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.

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