This insider selling cluster is immaterial in dollar terms relative to Regeneron's $87.7B market cap. Both sales are small, open-market sales by non-C-suite insiders (EVP Commercial, Director) — the academic literature shows cluster sells are weak predictors. Expect no price impact. Monitor for any large C-suite or 10% owner open-market sales exceeding $5M+ to become concerned.
Price Chart
Executive Summary
Two Regeneron insiders (EVP Commercial and a director) sold a total of $1.37M in open-market shares over a three-day window, with the EVP selling the bulk ($1.03M). At an $87.7B market cap, the sales represent ~0.0016% of market cap — well below the 0.1% trivial threshold. The exercise of a derivative by the director is non-cash and does not alter the sell-side reading. The trade sizes are modest relative to company size, and the cluster does not exceed any materiality floor.
Key Financial Metrics
Key Facts
- Total open-market insider sales: $1.37M over 3 days (0.0016% of market cap)
- EVP Commercial Marion McCourt sold $1.03M at $857.39 and $850/share, comprising ~75% of the cluster value
- Director Kathryn Guarini sold $340K at $850/share, plus exercised 400 derivative shares at $719.37 (cash portion $287.7K) and 400 shares at $0 (non-cash)
- No insider purchases occurred in this cluster
- Prior 30-day insider activity showed 3 sells totaling $2.3M — consistent pattern of routine sales
Financial Impact
Insider sales of $1.37M represent ~0.0016% of $87.7B market cap — noise level. No material financial impact.
Risk Factors
- Insider selling pattern could intensify if larger trades emerge from CEO/CFO
- No material risk from these small sales
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-REGN-1788507406039 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 1, 2026 1d ago | ANALYST-UPGRADE | — | awaiting T+5 | — | — |
Sep 3, 2026 29d ago | Insider Cluster | $843.47 $781.49 | ▼ −7.35% | ▼ −6.20% | $735.20 (−12.84%) |
Aug 24, 2026 5w ago | Court Ruling | $828.50 $799.08 | ▼ −3.55% | ▼ −4.02% | $735.20 (−11.26%) |
Aug 20, 2026 6w ago | Press Release | $826.64 $807.71 | ▼ −2.29% | ▼ −3.40% | $735.20 (−11.06%) |
Aug 12, 2026 7w ago | Insider Cluster | $797.99 $840.84 | ▲ +5.37% | ▲ +5.81% | $735.20 (−7.87%) |
Aug 11, 2026 7w ago | Court Ruling | $797.00 $807.57 | ▲ +1.33% | ▲ +1.73% | $735.20 (−7.75%) |
Jul 30, 2026 9w ago | 8-K | $738.34 $772.11 | ▲ +4.57% | ▲ +0.95% | $735.20 (−0.43%) |
Jul 30, 2026 9w ago | Press Release | $738.34 $772.11 | ▲ +4.57% | ▲ +0.95% | $735.20 (−0.43%) |
Jul 27, 2026 9w ago | Press Release | $695.18 $759.24 | ▼ −9.21% | ▼ −6.95% | $735.20 (−5.76%) |
Jul 17, 2026 11w ago | Press Release | $676.69 $651.91 | ▼ −3.66% | ▼ −2.97% | $735.20 (+8.65%) |
US Market Status
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