SCHLEIFER LEONARD S - Insider Non-Derivative Transactions at REGENERON PHARMACEUTICALS, INC. (REGN) - (SEC)
Updated on January 3, 2026.
According to recent SEC insider information filed on Dec 9, 2025, SCHLEIFER LEONARD S's relationship to REGENERON PHARMACEUTICALS, INC. (REGN) is Director,Officer (Bd. Co-Chair, President & CEO), and currently has 369,668 shares of Common Stock.
The chart below shows the number of shares owned, and the table shows the recent insider transactions.
You can see similar information for other REGN insiders.
Related Topics: SEC Topic List.
Data Source: SEC.
SCHLEIFER LEONARD S - Insider Non-Derivative Transactions of REGN Common Stock
SCHLEIFER LEONARD S - Insider Non-Derivative Transactions at REGN
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| Date | Transaction | No. of Shares | Price Per Share | Shares Owned After Transactions |
|---|---|---|---|---|
| Dec 10, 2025 | F -- (Common Stock) | 155145 | 701.51 | 214523 |
| Dec 10, 2025 | M -- (Common Stock) | 172723 | 555.67 | 369668 |
| Jun 13, 2024 | Sell -- (Common Stock) | 1000 | 1025.27 | 0 |
| Jun 13, 2024 | C -- (Common Stock) | 1000 | 0 | 1000 |
| Jun 13, 2024 | Sell -- (Common Stock) | 270 | 1016.62 | 39985 |
| Jun 13, 2024 | Sell -- (Common Stock) | 14879 | 1015.3 | 40255 |
| Jun 12, 2024 | Sell -- (Common Stock) | 1743 | 1016.04 | 55134 |
| Jun 12, 2024 | Sell -- (Common Stock) | 7321 | 1015.28 | 56877 |
| Jun 7, 2024 | Sell -- (Common Stock) | 787 | 1015.02 | 64198 |
| May 18, 2024 | Sell -- (Common Stock) | 143 | 980.07 | 466877 |
| May 18, 2024 | Sell -- (Common Stock) | 22687 | 979.22 | 467020 |
| May 16, 2024 | Sell -- (Common Stock) | 299 | 988.76 | 397259 |
| May 16, 2024 | Sell -- (Common Stock) | 228 | 987.46 | 397558 |
| May 16, 2024 | Sell -- (Common Stock) | 103 | 986.57 | 397786 |
| May 16, 2024 | Sell -- (Common Stock) | 281 | 985.72 | 397889 |
| May 16, 2024 | Sell -- (Common Stock) | 305 | 984 | 398170 |
| May 16, 2024 | Sell -- (Common Stock) | 250 | 983.91 | 398475 |
| May 16, 2024 | Sell -- (Common Stock) | 235 | 982.66 | 398725 |
| May 16, 2024 | Sell -- (Common Stock) | 1081 | 981.5 | 398960 |
| May 16, 2024 | Sell -- (Common Stock) | 295 | 980.64 | 400041 |
| May 16, 2024 | Sell -- (Common Stock) | 7864 | 979.05 | 400336 |
| May 15, 2024 | Sell -- (Common Stock) | 2302 | 980.1 | 408200 |
| May 15, 2024 | Sell -- (Common Stock) | 22698 | 979.16 | 410502 |
| May 14, 2024 | F -- (Common Stock) | 144433 | 976.79 | 433200 |
| May 14, 2024 | M -- (Common Stock) | 203204 | 399.66 | 577633 |
| Dec 12, 2023 | F -- (Common Stock) | 12841 | 844.09 | 374429 |
| Dec 12, 2023 | M -- (Common Stock) | 25155 | 0 | 387270 |
| May 16, 2023 | G -- (Common Stock) | 53807 | 0 | 0 |
| May 16, 2023 | G -- (Common Stock) | 53807 | 0 | 64985 |
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