Fenimore Christopher R. has filed 52 insider transactions across 1 company since February 2023.
Most recent transaction: a tax payment of 992 shares of REGENERON PHARMACEUTICALS, INC. ($REGN) on December 08, 2025.
Activity breakdown: 0 open-market purchases and 21 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 8, 2025 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | EVP Finance CFO | F | Common Stock | 992 | $712.94 | 21,795.0000 | 136,200,000 | 4.35% | 0.00% |
| Dec. 5, 2025 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | EVP Finance CFO | A | Common Stock | 3027 | $0.00 | 22,787.0000 | 136,200,000 | 15.32% | 0.00% |
| Dec. 5, 2025 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | EVP Finance CFO | A | Non-Qualified Stock Option (right to buy) | 14924 | $0.00 | 14,924.0000 | 136,200,000 | 9999.99% | 0.01% |
| Dec. 16, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | F | Common Stock | 491 | $730.81 | 19,727.0000 | 135,300,000 | 2.43% | 0.00% |
| Dec. 6, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | A | Non-Qualified Stock Option (right to buy) | 9979 | $0.00 | 9,979.0000 | 135,300,000 | 9999.99% | 0.01% |
| Dec. 6, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | A | Common Stock | 2591 | $0.00 | 21,358.0000 | 135,300,000 | 13.81% | 0.00% |
| Dec. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | F | Common Stock | 1140 | $787.00 | 20,218.0000 | 135,300,000 | 5.34% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 2237 | $1204.71 | 20,145.0000 | 134,800,000 | 9.99% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 928 | $1205.49 | 19,217.0000 | 134,800,000 | 4.61% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 450 | $1206.15 | 18,767.0000 | 134,800,000 | 2.34% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 236 | $1205.67 | 18,967.0000 | 134,800,000 | 1.23% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 200 | $1206.70 | 18,767.0000 | 134,800,000 | 1.05% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 235 | $1205.67 | 18,967.0000 | 134,800,000 | 1.22% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 200 | $1206.67 | 18,767.0000 | 134,800,000 | 1.05% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 228 | $1204.79 | 19,733.0000 | 134,800,000 | 1.14% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 766 | $1205.44 | 18,967.0000 | 134,800,000 | 3.88% | 0.00% |
| Aug. 28, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 200 | $1206.30 | 18,767.0000 | 134,800,000 | 1.05% | 0.00% |
| Feb. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 1342 | $953.47 | 26,131.0000 | 133,100,000 | 4.88% | 0.00% |
| Feb. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 1100 | $954.57 | 25,031.0000 | 133,100,000 | 4.21% | 0.00% |
| Feb. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 600 | $955.00 | 24,431.0000 | 133,100,000 | 2.40% | 0.00% |
| Feb. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 344 | $950.49 | 29,006.0000 | 133,100,000 | 1.17% | 0.00% |
| Feb. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 487 | $951.39 | 28,519.0000 | 133,100,000 | 1.68% | 0.00% |
| Feb. 9, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Finance & CFO | S | Common Stock | 1046 | $952.62 | 27,473.0000 | 133,100,000 | 3.67% | 0.00% |
| Jan. 23, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 3583 | $948.50 | 29,350.0000 | 133,100,000 | 10.88% | 0.00% |
| Jan. 23, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Non-Qualified Stock Option (right to buy) | 5000 | $0.00 | 0.0000 | 133,100,000 | 100.00% | 0.00% |
| Jan. 23, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Non-Qualified Stock Option (right to buy) | 5000 | $0.00 | 0.0000 | 133,100,000 | 100.00% | 0.00% |
| Jan. 23, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Common Stock | 5000 | $555.67 | 31,919.0000 | 133,100,000 | 18.57% | 0.00% |
| Jan. 23, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 3986 | $948.50 | 27,933.0000 | 133,100,000 | 12.49% | 0.00% |
| Jan. 23, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Common Stock | 5000 | $399.66 | 32,933.0000 | 133,100,000 | 17.90% | 0.00% |
| Jan. 3, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Common Stock | 5000 | $555.67 | 29,431.0000 | 133,100,000 | 20.47% | 0.00% |
| Jan. 3, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 4043 | $912.30 | 25,388.0000 | 133,100,000 | 13.74% | 0.00% |
| Jan. 3, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Common Stock | 5000 | $399.66 | 30,388.0000 | 133,100,000 | 19.69% | 0.00% |
| Jan. 3, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 3469 | $912.30 | 26,919.0000 | 133,100,000 | 11.42% | 0.00% |
| Jan. 3, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Non-Qualified Stock Option (right to buy) | 5000 | $0.00 | 5,000.0000 | 133,100,000 | 50.00% | 0.00% |
| Jan. 3, 2024 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Non-Qualified Stock Option (right to buy) | 5000 | $0.00 | 5,000.0000 | 133,100,000 | 50.00% | 0.00% |
| Dec. 27, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | S | Common Stock | 2448 | $856.71 | 24,431.0000 | 130,400,000 | 9.11% | 0.00% |
| Dec. 22, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | S | Common Stock | 250 | $846.27 | 26,879.0000 | 130,400,000 | 0.92% | 0.00% |
| Dec. 21, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | S | Common Stock | 1224 | $844.09 | 27,129.0000 | 130,400,000 | 4.32% | 0.00% |
| Dec. 21, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | S | Common Stock | 456 | $843.79 | 28,353.0000 | 130,400,000 | 1.58% | 0.00% |
| Dec. 12, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 2552 | $856.71 | 28,809.0000 | 130,400,000 | 8.14% | 0.00% |
| Dec. 11, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 260 | $844.09 | 31,361.0000 | 130,400,000 | 0.82% | 0.00% |
| Dec. 8, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | A | Non-Qualified Stock Option (right to buy) | 8499 | $0.00 | 8,499.0000 | 130,400,000 | 9999.99% | 0.01% |
| Dec. 11, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 1276 | $844.09 | 31,621.0000 | 130,400,000 | 3.88% | 0.00% |
| Dec. 8, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 474 | $843.79 | 30,527.0000 | 130,400,000 | 1.53% | 0.00% |
| Dec. 8, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | A | Common Stock | 2370 | $0.00 | 32,897.0000 | 130,400,000 | 7.76% | 0.00% |
| Aug. 23, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Common Stock | 7000 | $399.66 | 36,199.0000 | 130,400,000 | 23.97% | 0.01% |
| Aug. 23, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 5198 | $842.66 | 31,001.0000 | 130,400,000 | 14.36% | 0.00% |
| Aug. 23, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Non-Qualified Stock Option (right to buy) | 7000 | $0.00 | 10,000.0000 | 130,400,000 | 41.18% | 0.01% |
| March 23, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | S | Common Stock | 2192 | $806.47 | 29,180.0000 | 130,400,000 | 6.99% | 0.00% |
| Feb. 3, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Non-Qualified Stock Option (right to buy) | 5000 | $0.00 | 0.0000 | 130,400,000 | 100.00% | 0.00% |
| Feb. 3, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | M | Common Stock | 5000 | $270.43 | 34,658.0000 | 130,400,000 | 16.86% | 0.00% |
| Feb. 3, 2023 | REGENERON PHARMACEUTICALS, INC. | $REGN | Fenimore Christopher R. | SVP Controller | F | Common Stock | 3286 | $774.29 | 31,372.0000 | 130,400,000 | 9.48% | 0.00% |