George L. Sing serves as Executive at REGENERON PHARMACEUTICALS INC, where they oversee executive responsibilities. Since joining the company, George L. Sing has executed 190 insider transactions totaling $147.4M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 30, 2025 involved selling 6,188 shares valued at $4.8M.
George L. Sing currently holds 30,852 shares of REGENERON PHARMACEUTICALS INC (REGN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, George L. Sing has been a net seller of REGN stock. They have purchased $448.3K and sold $147.0M worth of shares.
George L. Sing's most recent insider trade was on Dec 30, 2025, when they sold 6,188 shares at $774.03 per share.
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| $520.01 |
| Discretionary |
| Sep 4, 2024 | REGN | $0 | Gift | 1,200 | $N/A | Discretionary |
| May 3, 2024 | REGN | $826.7K | Option Exercise | 2,000 | $413.33 | Discretionary |
| May 3, 2024 | REGN | $826.6K | Payment | 877 | $942.53 | Discretionary |
| Feb 26, 2024 | REGN | $206.7K | Option Exercise | 500 | $413.33 | Discretionary |
| Feb 26, 2024 | REGN | $206.7K | Option Exercise | 500 | $413.33 | Discretionary |
| Feb 26, 2024 | REGN | $495.0K | Sale | 500 | $990.00 | Discretionary |
| Feb 26, 2024 | REGN | $497.5K | Sale | 500 | $995.00 | Discretionary |
| Feb 23, 2024 | REGN | $206.7K | Option Exercise | 500 | $413.33 | Discretionary |
| Feb 23, 2024 | REGN | $492.5K | Sale | 500 | $985.00 | Discretionary |
| Feb 22, 2024 | REGN | $413.3K | Option Exercise | 1,000 | $413.33 | Discretionary |
| Feb 22, 2024 | REGN | $965.0K | Sale | 1,000 | $965.00 | Discretionary |
| Feb 22, 2024 | REGN | $960.0K | Sale | 1,000 | $960.00 | Discretionary |
| Feb 22, 2024 | REGN | $413.3K | Option Exercise | 1,000 | $413.33 | Discretionary |
| Feb 22, 2024 | REGN | $413.3K | Option Exercise | 1,000 | $413.33 | Discretionary |
| Feb 22, 2024 | REGN | $970.0K | Sale | 1,000 | $970.00 | Discretionary |
| Feb 9, 2024 | REGN | $206.7K | Option Exercise | 500 | $413.33 | Discretionary |
| Feb 9, 2024 | REGN | $477.5K | Sale | 500 | $955.00 | Discretionary |
| Feb 8, 2024 | REGN | $206.7K | Option Exercise | 500 | $413.33 | Discretionary |
| Feb 8, 2024 | REGN | $472.5K | Sale | 500 | $945.00 | Discretionary |
| Jan 2, 2024 | REGN | $0 | Award | 135 | $N/A | Discretionary |
| Jan 3, 2023 | REGN | $0 | Award | 165 | $N/A | Discretionary |
| Feb 28, 2022 | REGN | $614.0K | Sale | 1,000 | $614.00 | Discretionary |
| Feb 28, 2022 | REGN | $617.0K | Sale | 1,000 | $617.00 | Discretionary |
| Feb 25, 2022 | REGN | $1.2M | Sale | 2,000 | $621.00 | Discretionary |
| Jan 3, 2022 | REGN | $0 | Award | 191 | $N/A | Discretionary |
| Nov 22, 2021 | REGN | $655.0K | Sale | 1,000 | $655.00 | Discretionary |
| Nov 22, 2021 | REGN | $660.0K | Sale | 1,000 | $660.00 | Discretionary |
| Nov 19, 2021 | REGN | $655.0K | Sale | 1,000 | $655.00 | Discretionary |