CSGP COSTAR GROUP, INC.
NEUTRAL
Impact: 3/10
Insider Cluster (1 insider)
Insider cluster: 4 insiders, $3.5M total
Final — all horizons settled through T+60d
CSGP ▼ -27.08% at T+60d
NEUTRAL call ✗ call lost -27.08% · α vs SPY -36.47% · entry $44.60 → $32.52
Last close $33.39 (close Jun 8) · -25.13% from $44.60 entry
T+1d
+1.14%
call +1.14% · α +1.09%
$45.11
settled 3mo ago
T+5d
+8.48%
call +8.48% · α +10.46%
$48.38
settled 3mo ago
T+20d
-10.88%
call -10.88% · α -3.32%
$39.75
settled 3mo ago
T+60d
-27.08%
call -27.08% · α -36.47%
$32.52
settled 19d ago
Price Chart
Loading chart...
Executive Summary
A director at CoStar Group, Louise S. Sams, purchased $48,360 worth of shares in an open-market transaction. This is a modest, positive insider signal but represents a very small fraction of the company's $20.3B market cap.
Key Financial Metrics
Direction
buying
Total Value
$48.4K
Insiders
1
Actionable Insight
Monitor for follow-up purchases by other insiders; this single small buy is not a strong catalyst but reflects continued board-level confidence.
Key Facts
- Director Louise S. Sams bought 1,000 shares at $48.36 per share for a total of $48,360
- Transaction occurred on March 6, 2026, in the open market
- Only one transaction in the 7-day cluster window
- Total value represents less than 0.0003% of CoStar Group's $20.3B market cap
Financial Impact
$48,360 in open-market purchases
insider sentimentshare ownership
Risk Factors
- Single transaction by a non-executive director carries limited predictive weight
- No other insiders participated in recent buying
Market Snapshot
Exchange
Nasdaq
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CONTEXT: Insider Cluster Data (1 trades, 7d window) | cluster-CSGP-1773057630013 |
5 reports for CSGP
100%
Hit rate
best @ T+5▲ +8.48%
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
|
May 29, 2026
11d ago
|
8-K
| $32.15 $33.87 | ▲ +5.35% | ▲ +7.87% | $33.39 (+3.87%) |
|
May 18, 2026
22d ago
|
DEFA14A
| $33.18 $32.50 | ▼ −2.05% | ▼ −3.67% | $33.39 (+0.64%) |
|
Feb 27, 2026
14w ago
|
Insider Cluster
| $44.60 $48.38 | ▲ +8.48% | ▲ +10.46% | $33.39 (−25.13%) |
|
Feb 27, 2026
14w ago
|
Insider Cluster
| $44.60 $48.38 | ▲ +8.48% | ▲ +10.46% | $33.39 (−25.13%) |
|
Feb 24, 2026
15w ago
|
8-K
| $44.67 $47.58 | ▲ +6.51% | ▲ +7.61% | $33.39 (−25.25%) |
Showing 5 of 5
US Market Status
Market Closed — Opens in 7h 19m
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Try SecBot Free Coming soon: SecBot Pro with alerts, watchlists, and API access