REGN
Regeneron Pharmaceuticals Inc
NASDAQ: REGN · HEALTHCARE · BIOTECHNOLOGY
$686.36
-6.21% today
Updated 2026-04-29
Market cap
$74.13B
P/E ratio
17.27
P/S ratio
4.97x
EPS (TTM)
$40.94
Dividend yield
0.52%
52W range
$475 – $820
Volume
0.7M
Regeneron Pharmaceuticals Inc (REGN) Insider transactions
Net insider activity
Net selling (245,293 shares)
Buy transactions
35
Sell transactions
65
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 40 | $779.71 | $31188.40 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 14 | $775.58 | $10858.12 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 13 | $776.62 | $10096.06 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 9 | $777.42 | $6996.78 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 8 | $774.58 | $6196.64 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 4 | $778.24 | $3112.96 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 3 | $772.76 | $2318.28 |
| 2026-04-01 | RYAN, ARTHUR F | Director | Sale | 1 | $771.32 | $771.32 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 20 | $789.28 | $15785.60 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 11 | $785.48 | $8640.28 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 10 | $783.62 | $7836.20 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 9 | $784.48 | $7060.32 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 7 | $777.46 | $5442.22 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 5 | $779.69 | $3898.45 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 3 | $780.69 | $2342.07 |
| 2026-03-02 | RYAN, ARTHUR F | Director | Sale | 2 | $787.34 | $1574.68 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 1,638 | — | — |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Buy | 1,638 | $376.69 | $617018.22 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 331 | $780.45 | $258328.95 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 298 | $782.10 | $233065.80 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 220 | $783.29 | $172323.80 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 209 | $781.28 | $163287.52 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 208 | $779.55 | $162146.40 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 160 | $784.45 | $125512.00 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 56 | $785.61 | $43994.16 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 53 | $778.47 | $41258.91 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 50 | $775.50 | $38775.00 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 49 | $774.68 | $37959.32 |
| 2026-02-19 | ZOGHBI, HUDA Y | Director | Sale | 4 | $790.00 | $3160.00 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 57 | $777.56 | $44320.92 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 12 | $778.53 | $9342.36 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 10 | $776.59 | $7765.90 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 5 | $781.48 | $3907.40 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 3 | $783.34 | $2350.02 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 2 | $786.29 | $1572.58 |
| 2026-02-09 | RYAN, ARTHUR F | Director | Sale | 1 | $787.82 | $787.82 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 1,000 | — | — |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Buy | 1,000 | $492.00 | $492000.00 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 563 | $778.35 | $438211.05 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 521 | $776.43 | $404520.03 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 391 | $777.51 | $304006.41 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 205 | $779.56 | $159809.80 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 144 | $783.23 | $112785.12 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 75 | $780.06 | $58504.50 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 53 | $785.72 | $41643.16 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 37 | $782.67 | $28958.79 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 26 | $781.37 | $20315.62 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 20 | $775.95 | $15519.00 |
| 2026-02-09 | PITOFSKY, JASON | SVP Controller | Sale | 1 | $784.66 | $784.66 |
| 2026-01-07 | BASSLER, BONNIE L | Director | Sale | 1,500 | — | — |
| 2026-01-07 | BASSLER, BONNIE L | Director | Buy | 1,500 | $374.12 | $561180.00 |
| 2026-01-02 | ZOGHBI, HUDA Y | Director | Buy | 1,962 | — | — |
| 2026-01-02 | ZOGHBI, HUDA Y | Director | Buy | 155 | — | — |
| 2026-01-02 | THOMPSON, CRAIG B. | Director | Buy | 1,962 | — | — |
| 2026-01-02 | THOMPSON, CRAIG B. | Director | Buy | 155 | — | — |
| 2026-01-02 | SING, GEORGE L | Director | Buy | 1,962 | — | — |
| 2026-01-02 | SING, GEORGE L | Director | Buy | 155 | — | — |
| 2026-01-02 | SCHENKEIN, DAVID P | Director | Buy | 1,962 | — | — |
| 2026-01-02 | SCHENKEIN, DAVID P | Director | Buy | 155 | — | — |
| 2026-01-02 | RYAN, ARTHUR F | Director | Buy | 1,962 | — | — |
| 2026-01-02 | RYAN, ARTHUR F | Director | Buy | 155 | — | — |
| 2026-01-02 | POON, CHRISTINE A | Director | Buy | 1,962 | — | — |
| 2026-01-02 | POON, CHRISTINE A | Director | Buy | 155 | — | — |
| 2026-01-02 | GUARINI, KATHRYN | Director | Buy | 1,962 | — | — |
| 2026-01-02 | GUARINI, KATHRYN | Director | Buy | 155 | — | — |
| 2026-01-02 | GOLDSTEIN, JOSEPH L | Director | Buy | 1,962 | — | — |
| 2026-01-02 | GOLDSTEIN, JOSEPH L | Director | Buy | 155 | — | — |
| 2026-01-02 | COLES, N ANTHONY | Director | Buy | 1,962 | — | — |
| 2026-01-02 | COLES, N ANTHONY | Director | Buy | 155 | — | — |
| 2026-01-02 | BROWN, MICHAEL S | Director | Buy | 1,962 | — | — |
| 2026-01-02 | BROWN, MICHAEL S | Director | Buy | 155 | — | — |
| 2026-01-02 | BASSLER, BONNIE L | Director | Buy | 1,962 | — | — |
| 2026-01-02 | BASSLER, BONNIE L | Director | Buy | 155 | — | — |
| 2025-12-31 | YANCOPOULOS, GEORGE | Director, Bd. Co-Chair, President & CSO | Buy | 28,570 | — | — |
| 2025-12-31 | YANCOPOULOS, GEORGE | Director, Bd. Co-Chair, President & CSO | Sale | 28,570 | — | — |
| 2025-12-31 | SCHLEIFER, LEONARD S | Director, Bd. Co-Chair, President & CEO | Buy | 28,570 | — | — |
| 2025-12-31 | SCHLEIFER, LEONARD S | Director, Bd. Co-Chair, President & CEO | Sale | 28,570 | — | — |
| 2025-12-30 | SING, GEORGE L | Director | Sale | 9,212 | — | — |
| 2025-12-30 | SING, GEORGE L | Director | Buy | 9,212 | $520.01 | $4.79M |
| 2025-12-30 | SING, GEORGE L | Director | Sale | 6,188 | $774.03 | $4.79M |
| 2025-12-09 | YANCOPOULOS, GEORGE | Director, Bd. Co-Chair, President & CSO | Sale | 146,815 | — | — |
| 2025-12-09 | YANCOPOULOS, GEORGE | Director, Bd. Co-Chair, President & CSO | Buy | 146,815 | $555.67 | $81.58M |
| 2025-12-09 | YANCOPOULOS, GEORGE | Director, Bd. Co-Chair, President & CSO | Sale | 131,874 | $701.51 | $92.51M |
| 2025-12-09 | VAN, PLEW DANIEL P | EVP & General Mgr, Industrial | Sale | 2,552 | $701.51 | $1.79M |
| 2025-12-09 | SCHLEIFER, LEONARD S | Director, Bd. Co-Chair, President & CEO | Sale | 172,723 | — | — |
| 2025-12-09 | SCHLEIFER, LEONARD S | Director, Bd. Co-Chair, President & CEO | Buy | 172,723 | $555.67 | $95.98M |
| 2025-12-09 | SCHLEIFER, LEONARD S | Director, Bd. Co-Chair, President & CEO | Sale | 155,145 | $701.51 | $108.84M |
| 2025-12-09 | MURPHY, ANDREW J | EVP Research | Sale | 4,229 | $701.51 | $2.97M |
| 2025-12-09 | MCCOURT, MARION | EVP Commercial | Sale | 1,021 | $701.51 | $716241.71 |
| 2025-12-08 | VAN, PLEW DANIEL P | EVP & General Mgr, Industrial | Sale | 1,906 | $712.94 | $1.36M |
| 2025-12-08 | PITOFSKY, JASON | VP Controller | Sale | 989 | $712.94 | $705097.66 |
| 2025-12-08 | MURPHY, ANDREW J | EVP Research | Sale | 1,699 | $712.94 | $1.21M |
| 2025-12-08 | MCCOURT, MARION | EVP Commercial | Sale | 1,336 | $712.94 | $952487.84 |
| 2025-12-08 | LAROSA, JOSEPH J | EVP General Counsel and Secret | Sale | 1,396 | $712.94 | $995264.24 |
| 2025-12-08 | FENIMORE, CHRISTOPHER R. | EVP Finance CFO | Sale | 992 | $712.94 | $707236.48 |
| 2025-12-05 | VAN, PLEW DANIEL P | EVP & General Mgr, Industrial | Buy | 18,315 | — | — |
| 2025-12-05 | VAN, PLEW DANIEL P | EVP & General Mgr, Industrial | Buy | 3,715 | — | — |
| 2025-12-05 | PITOFSKY, JASON | VP Controller | Buy | 2,261 | — | — |
| 2025-12-05 | PITOFSKY, JASON | VP Controller | Buy | 2,064 | — | — |
| 2025-12-05 | MURPHY, ANDREW J | EVP Research | Buy | 18,315 | — | — |