Form 4 Mosaic Intelligence
Insider Cluster Detector
Stocks where 2+ corporate insiders made discretionary open-market purchases within the selected window. Cluster buying by C-suite insiders carries ~10% annualized alpha (Cohen et al, 2012) and +4–8% abnormal return over 12 months (Lakonishok & Lee, 2001). Routine 10b5-1 plans, option exercises, and equity awards are excluded.
Active Clusters
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within window
Avg Cluster Score
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0–100 conviction scale
Total Insider Value
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discretionary purchases ($M)
Fetching insider cluster data...
Methodology — Filters routine transactions per Cohen et al (2012)
Filters routine 10b5-1 plan transactions, option exercises (SEC Form 4 code M), equity awards (code A), and gifts (code G). Only discretionary open-market purchases (code P) from SEC Form 4 filings are included.
- Cluster score = f(cluster size, C-suite weight, total purchase value) — capped at 100.
- HIGH CONVICTION score > 75 · MODERATE 50–75 · EARLY < 50.
- C-suite roles (CEO, CFO, COO, President, Chairman) receive higher score weight per Jeng, Metrick & Zeckhauser (2003).
- Returns shown are since the first purchase date in the cluster — not annualized. Past alpha is not a guarantee of future returns.
METHODOLOGY_HASH: insider-cluster-2026-06-06-v1 · Cohen, Malloy & Pomorski (2012) · Lakonishok & Lee (2001) · Jeng, Metrick & Zeckhauser (2003)