Insider · CIK 1189014
Christine A Poon
Director at Regeneron Pharmaceuticals REGN
Full history from EDGAR: holdings now, every transaction and Form 144 planned sales
Open-market buys0
Open-market sales17
Bought$0
Sold$22.2M
Every trade, with what the company filed around it
Open-market buys and sales as each Form 4 states them, newest first.
How these figures work
Notes on each row are as each Form 4 states them, next to SEC Tracker's own records of the company's filings and other insiders' buys. Holding after is what the filing reports they held after the trade, with the change in their holding.
| Date | Company | Trade | Value | Holding after | Notes |
|---|---|---|---|---|---|
| Nov 2, 2026 | Regeneron Pharmaceuticals REGN | Sold 218 sh at $966.74 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. | $211K | 12,831 −2% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. |
| Nov 2, 2026 | Regeneron Pharmaceuticals REGN | Sold 772 sh at $967.38 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. | $747K | 12,059 −6% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. |
| Nov 2, 2026 | Regeneron Pharmaceuticals REGN | Sold 2,499 sh at $968.58 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. | $2.4M | 9,560 −21% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. |
| Nov 2, 2026 | Regeneron Pharmaceuticals REGN | Sold 3,203 sh at $969.50 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. | $3.1M | 6,357 −34% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. |
| Nov 2, 2026 | Regeneron Pharmaceuticals REGN | Sold 937 sh at $970.51 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. | $909K | 5,420 −15% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. |
| Nov 2, 2026 | Regeneron Pharmaceuticals REGN | Sold 201 sh at $971.31 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. | $195K | 5,219 −4% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Nov 2, 2026. |
| Oct 29, 2025 | Regeneron Pharmaceuticals REGN | Sold 650 sh at $652.68 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. | $424K | 8,202 −7% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. |
| Oct 29, 2025 | Regeneron Pharmaceuticals REGN | Sold 2,735 sh at $653.50 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. | $1.8M | 5,467 −33% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. |
| Oct 29, 2025 | Regeneron Pharmaceuticals REGN | Sold 1,915 sh at $654.42 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. | $1.3M | 3,552 −35% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. |
| Oct 29, 2025 | Regeneron Pharmaceuticals REGN | Sold 100 sh at $655.10 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. | $66K | 3,452 −3% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. |
| Oct 29, 2025 | Regeneron Pharmaceuticals REGN | Sold 712 sh at $656.50 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. | $467K | 2,740 −21% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. |
| Oct 29, 2025 | Regeneron Pharmaceuticals REGN | Sold 388 sh at $657.29 The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. | $255K | 2,352 −14% | The filing does not mark this sale as under a Rule 10b5-1 plan. The same day as a Form 144 notice of a planned insider sale filed Oct 29, 2025. |
| Aug 23, 2023 | Regeneron Pharmaceuticals REGN | Sold 300 sh at $837.92 The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. | $251K | 14,017 −2% | The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. |
| Aug 23, 2023 | Regeneron Pharmaceuticals REGN | Sold 1,998 sh at $838.60 The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. | $1.7M | 12,019 −14% | The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. |
| Aug 23, 2023 | Regeneron Pharmaceuticals REGN | Sold 3,032 sh at $839.45 The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. | $2.5M | 8,987 −25% | The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. |
| Aug 23, 2023 | Regeneron Pharmaceuticals REGN | Sold 6,450 sh at $840.65 The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. | $5.4M | 2,537 −72% | The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. |
| Aug 23, 2023 | Regeneron Pharmaceuticals REGN | Sold 500 sh at $841.05 The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. | $421K | 2,037 −20% | The filing does not mark this sale as under a Rule 10b5-1 plan. 2 days after a Form 144 notice of a planned insider sale filed Aug 21, 2023. |
Open-market trades are Form 4 transaction codes P (purchase) and S (sale). Planned sales are those the filing marks as made under a Rule 10b5-1 plan. A P-code buy at the offering price within a day of the company's FWP, 424B prospectus or offering 8-K is marked Bought in the offering and left out of open-market buy counts and cluster buys. Prices and values are as stated in each Form 4. Stock prices aren't shown on this page. Not investment advice.