Greedy Insider
REGN Insider Trades and Greediness Scores
REGENERON PHARMACEUTICALS, INC. (REGN) insider trades: since Nov 20, 2025, Greedy Insider recorded 0 open-market buys and 122 sales on Form 4 from 13 insiders. The strongest recent filing scored 88 (Strong).
Who bought and who sold
Across the last 122 scoreable Form 4 transactions in REGN, 0 were open-market purchases and 122 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 6.0 | 4522.56 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 35.0 | 26456.85 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 16.0 | 12122.88 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 24.0 | 18195.84 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 14.0 | 10639.44 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 74.0 | 56288.1 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 27.0 | 20556.72 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 55.0 | 41941.35 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 25.0 | 19094.0 | 2026-10-14 | 62 | View |
| MURPHY ANDREW J | Co-Chief Scientific Officer | Sell | 219.0 | 167403.6 | 2026-10-14 | 63 | View |
The strongest recent filing
YANCOPOULOS GEORGE (President) sold 131,874 shares of REGENERON PHARMACEUTICALS, INC. on Dec 9, 2025, a filing that scored 88 (Strong). It scored Strong because a senior insider was trading and several insiders moved the same way within a week. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 8 insiders (YANCOPOULOS GEORGE, SCHLEIFER LEONARD S, Van Plew Daniel P, McCourt Marion) traded REGN the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with REGENERON PHARMACEUTICALS, INC.'s own history
Open-market buys make up 0% of the 122 scoreable REGN transactions on record between Nov 20, 2025 and Oct 14, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 122
- Open-market buys: 0
- Sales: 122
- Distinct insiders: 13
- Strongest recent Greediness Score: 88 (Strong)
Primary sources
Related
- Strongest filing
- REGN in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.