REGENERON PHARMACEUTICALS, INC. insider trading
REGN$726.47-8.73 (-1.19% today)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+24.1%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- GYGeorge YancopoulosNot reported
- LSLeonard S. SchleiferNot reported
- NSNeil StahlNot reported
- AJAndrew J. MurphyNot reported
- JJJoseph J. LarosaNot reported
- DPDaniel P. van PlewNot reported
- GLGeorge L. SingNot reported
- CRChristopher R. FenimoreNot reported
- AFArthur F. RyanNot reported
- MSMichael S. BrownNot reported
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| REGN | Marion McCourt | Open market sell$970K | -8.5% | $857.39 | $970K | Sep 3, 2026 | Sep 3, 2026 |
| REGN | Marion McCourt | Open market sell$1.03M | -8.3% | $850.00 | $1.03M | Sep 2, 2026 | Sep 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$130K | -1.1% | $650.15 | $130K | Jul 2, 2026 | Jul 7, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.43K | 0.0% | $714.13 | $1.43K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$712 | 0.0% | $712.09 | $712 | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$3.56K | 0.0% | $711.49 | $3.56K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.42K | 0.0% | $710.87 | $1.42K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$4.26K | 0.0% | $709.45 | $4.26K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$2.83K | 0.0% | $707.40 | $2.83K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$4.95K | 0.0% | $706.74 | $4.95K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$9.88K | -0.1% | $705.56 | $9.88K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$10.6K | -0.1% | $704.28 | $10.6K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$16.9K | -0.1% | $703.46 | $16.9K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$10.5K | -0.1% | $702.46 | $10.5K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$3.51K | 0.0% | $701.76 | $3.51K | May 1, 2026 | May 4, 2026 |
| REGN | Arthur F. Ryan | Open market sell$31.2K | -0.2% | $779.71 | $31.2K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$3.11K | 0.0% | $778.24 | $3.11K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$7K | -0.1% | $777.42 | $7K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$10.1K | -0.1% | $776.62 | $10.1K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$10.9K | -0.1% | $775.58 | $10.9K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$6.2K | -0.1% | $774.58 | $6.2K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$6.19K | -0.1% | $773.59 | $6.19K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$2.32K | 0.0% | $772.76 | $2.32K | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$771 | 0.0% | $771.32 | $771 | Apr 1, 2026 | Apr 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$15.8K | -0.1% | $789.28 | $15.8K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$15.8K | -0.1% | $788.96 | $15.8K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.57K | 0.0% | $787.34 | $1.57K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$5.51K | 0.0% | $786.61 | $5.51K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$8.64K | -0.1% | $785.48 | $8.64K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$7.06K | -0.1% | $784.48 | $7.06K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$7.84K | -0.1% | $783.62 | $7.84K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.57K | 0.0% | $782.62 | $1.57K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.56K | 0.0% | $781.21 | $1.56K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$2.34K | 0.0% | $780.69 | $2.34K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$3.9K | 0.0% | $779.69 | $3.9K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.56K | 0.0% | $778.30 | $1.56K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$5.44K | 0.0% | $777.46 | $5.44K | Mar 2, 2026 | Mar 3, 2026 |
| REGN | Arthur F. Ryan | Open market sell$788 | 0.0% | $787.82 | $788 | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$1.57K | 0.0% | $786.29 | $1.57K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$786 | 0.0% | $785.71 | $786 | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$785 | 0.0% | $784.59 | $785 | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$2.35K | 0.0% | $783.34 | $2.35K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$783 | 0.0% | $782.53 | $783 | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$3.91K | 0.0% | $781.48 | $3.91K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$780 | 0.0% | $780.09 | $780 | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$3.9K | 0.0% | $779.41 | $3.9K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$9.34K | -0.1% | $778.53 | $9.34K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$44.3K | -0.3% | $777.56 | $44.3K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$7.77K | -0.1% | $776.59 | $7.77K | Feb 9, 2026 | Feb 11, 2026 |
| REGN | Arthur F. Ryan | Open market sell$776 | 0.0% | $775.63 | $776 | Feb 9, 2026 | Feb 11, 2026 |