Regeneron Pharmaceuticals, Inc. insider George L. Sing sells $20.4M in REGN shares
The sale reduces the insider's holding by 46%, the filing shows.
A director at Regeneron Pharmaceuticals, Inc., George L. Sing, sold 21,129 shares of the company's stock on the open market on Nov 2. The sale, at an average of $964.38 a share, comes to about $20 million.
The filing does not mark the sale as made under a Rule 10b5-1 trading plan. The sale reduces the insider's holding by 46%, to 25,147 shares.
The trade was reported within two business days, as Section 16 requires. Three Regeneron Pharmaceuticals, Inc. insiders sold on the open market within 14 days, a pattern known as a cluster sell.
Details from the SEC filing:
| Company | Regeneron Pharmaceuticals, Inc. (REGN) |
|---|---|
| Insider | George L. Sing |
| Role | Director |
| Transaction | Open-market sale (code S) |
| Shares | 21,129 |
| Average price | $964.38 |
| Value | $20,376,358 |
| Trade date | Nov 2, 2026 |
| Filed with the SEC | Nov 4, 2026, 4:11 PM ET |
| Shares held after | 25,147 |
| Ownership | Direct |
| Rule 10b5-1 plan | Not marked in the filing |
Open the full breakdown of this REGN trade
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Source: SEC Form 4. Information only, not investment advice. Not affiliated with or endorsed by the U.S. Securities and Exchange Commission.
