The Filings Report

Regeneron Pharmaceuticals Inc insider trading

REGNfinancial statementsForm 4 filings on EDGAR204 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at Regeneron Pharmaceuticals Inc bought $0 of stock in the open market, and 4 sold $7M. Officers and directors accounted for $0 of purchases and $7M of sales. The last reported transaction was an open-market sale by Murphy Andrew J on October 14, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 15, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

REGN daily priceSplit-adjusted prices in US dollars

Bought $0Sold $7MAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $869.43 · H $935.35 · L $839.08 · C $927.89Bought $0 (0)Sold $0 (0)
$709$769$829$888$9482026-08-04: open $753.76, high $763.54, low $747.00, close $760.662026-08-05: open $767.98, high $782.59, low $763.31, close $768.582026-08-06: open $777.85, high $780.95, low $762.79, close $772.112026-08-07: open $774.47, high $785.99, low $767.17, close $784.362026-08-10: open $781.72, high $809.09, low $775.83, close $808.052026-08-11: open $808.80, high $813.63, low $796.66, close $797.002026-08-12: open $790.55, high $801.36, low $784.61, close $797.992026-08-13: open $802.21, high $815.80, low $794.49, close $805.972026-08-14: open $802.35, high $806.54, low $792.57, close $803.482026-08-17: open $801.76, high $813.18, low $795.73, close $805.932026-08-18: open $814.00, high $821.02, low $805.93, close $810.242026-08-19: open $817.17, high $844.92, low $815.38, close $840.842026-08-20: open $831.70, high $840.82, low $826.05, close $826.642026-08-21: open $835.74, high $847.00, low $826.64, close $834.042026-08-24: open $834.51, high $834.70, low $823.40, close $828.502026-08-25: open $829.22, high $839.94, low $823.44, close $833.562026-08-26: open $827.78, high $831.67, low $814.70, close $814.792026-08-27: open $806.18, high $817.62, low $804.27, close $807.712026-08-28: open $809.40, high $809.40, low $789.08, close $794.192026-08-31: open $782.44, high $802.78, low $779.08, close $799.082026-09-01: open $808.86, high $824.63, low $804.32, close $823.822026-09-02: open $826.24, high $854.49, low $825.77, close $852.032026-09-03: open $858.19, high $859.34, low $837.63, close $843.472026-09-04: open $840.06, high $841.54, low $825.83, close $827.722026-09-08: open $814.36, high $821.17, low $799.42, close $810.312026-09-09: open $803.83, high $808.63, low $796.73, close $807.652026-09-10: open $794.36, high $806.14, low $792.00, close $793.262026-09-11: open $800.00, high $800.22, low $780.81, close $781.492026-09-14: open $791.98, high $798.84, low $779.45, close $793.742026-09-15: open $788.53, high $788.58, low $769.57, close $774.112026-09-16: open $775.82, high $779.98, low $771.80, close $774.612026-09-17: open $781.18, high $789.99, low $774.78, close $789.452026-09-18: open $787.34, high $794.73, low $779.65, close $784.672026-09-21: open $786.03, high $801.44, low $779.96, close $798.172026-09-22: open $802.48, high $811.66, low $791.31, close $803.902026-09-23: open $805.23, high $813.53, low $790.02, close $801.822026-09-24: open $801.59, high $807.21, low $789.39, close $796.022026-09-25: open $803.87, high $803.87, low $784.37, close $788.042026-09-28: open $778.09, high $780.95, low $750.00, close $752.252026-09-29: open $745.85, high $752.47, low $741.83, close $750.512026-09-30: open $749.84, high $763.72, low $742.94, close $758.272026-10-01: open $766.53, high $777.43, low $726.02, close $734.812026-10-02: open $740.50, high $742.50, low $729.20, close $735.202026-10-05: open $734.37, high $736.42, low $722.02, close $726.472026-10-06: open $734.61, high $740.51, low $727.16, close $738.722026-10-07: open $738.05, high $753.68, low $734.18, close $742.122026-10-08: open $742.12, high $744.50, low $723.65, close $739.572026-10-09: open $737.20, high $751.27, low $732.83, close $746.542026-10-12: open $748.67, high $768.66, low $744.96, close $762.812026-10-13: open $762.49, high $765.60, low $743.57, close $753.122026-10-14: open $758.16, high $781.84, low $755.21, close $778.362026-10-15: open $802.33, high $809.49, low $792.58, close $796.342026-10-16: open $803.01, high $805.68, low $787.32, close $790.742026-10-19: open $792.59, high $800.00, low $780.83, close $782.042026-10-20: open $793.85, high $807.86, low $789.69, close $807.482026-10-21: open $806.74, high $813.86, low $800.24, close $805.672026-10-22: open $809.01, high $825.52, low $800.00, close $819.092026-10-23: open $819.09, high $819.09, low $801.22, close $805.022026-10-26: open $812.31, high $817.17, low $796.61, close $807.672026-10-27: open $807.67, high $816.14, low $804.05, close $816.102026-10-28: open $807.06, high $821.16, low $802.20, close $813.272026-10-29: open $826.14, high $828.19, low $811.63, close $818.772026-10-30: open $869.43, high $935.35, low $839.08, close $927.89Insider purchases / sales · USD$5M$0−$5M2026-08-10: 0 purchases ($0), 2 sales ($960K)2026-09-02: 0 purchases ($0), 2 sales ($1M)2026-09-03: 0 purchases ($0), 1 sales ($970K)2026-10-14: 0 purchases ($0), 27 sales ($3M)Aug 4Aug 26Sep 17Oct 9Oct 30

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

204 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-16$753.76$5K51,974Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-135$755.91$26K51,939Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-116$757.68$12K51,923Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-124$758.16$18K51,899Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-114$759.96$11K51,885Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-174$760.65$56K51,811Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-127$761.36$21K51,784Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-155$762.57$42K51,729Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-125$763.76$19K51,704Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1219$764.40$167K51,485Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1271$765.39$207K51,214Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1279$766.47$214K50,935Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1192$767.39$147K50,743Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1105$768.33$81K50,638Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1127$769.30$98K50,511Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-112$770.20$9K50,499Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1283$771.56$218K50,216Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1211$772.56$163K50,005Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1224$773.40$173K49,781Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1121$774.48$94K49,660Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1376$775.46$292K49,284Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-166$776.31$51K49,218Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-138$777.76$30K49,180Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1454$778.64$354K48,726Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1380$779.59$296K48,346Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-1463$780.63$361K47,883Oct 15, 2026
Oct 14, 2026Murphy Andrew JCo-Chief Scientific Officeropen-market sale10b5-150$781.47$39K47,833Oct 15, 2026
Oct 13, 2026Murphy Andrew JCo-Chief Scientific Officeroption exercise17,000$381.92$6M64,833Oct 15, 2026
Oct 13, 2026Murphy Andrew JCo-Chief Scientific Officertax withholding12,853$754.58$10M51,980Oct 15, 2026
Sep 3, 2026McCourt MarionEVP Commercialopen-market sale10b5-11,131$857.39$970K12,003Sep 3, 2026
Sep 2, 2026McCourt MarionEVP Commercialopen-market sale10b5-11,215$850.00$1M13,134Sep 3, 2026
Sep 2, 2026Guarini KathrynDirectoroption exercise400$719.37$288K1,003Sep 3, 2026
Sep 2, 2026Guarini KathrynDirectoropen-market sale10b5-1400$850.00$340K603Sep 3, 2026
Aug 19, 2026Larosa Joseph JEVP General Counsel and Secretoption exercise12,282$381.92$5M45,392Aug 21, 2026
Aug 19, 2026Larosa Joseph JEVP General Counsel and Secrettax withholding9,019$830.15$7M36,373Aug 21, 2026
Aug 18, 2026Fenimore Christopher R.EVP Finance CFOoption exercise6,283$381.92$2M24,583Aug 20, 2026
Aug 18, 2026Fenimore Christopher R.EVP Finance CFOtax withholding4,599$813.47$4M19,984Aug 20, 2026
Aug 10, 2026Guarini KathrynDirectoroption exercise400$719.37$288K1,003Aug 12, 2026
Aug 10, 2026Guarini KathrynDirectoropen-market sale10b5-1400$800.00$320K603Aug 12, 2026
Aug 10, 2026Zoghbi Huda YDirectoroption exercise800$376.69$301K2,503Aug 12, 2026
Aug 10, 2026Zoghbi Huda YDirectoropen-market sale10b5-1800$800.00$640K1,703Aug 12, 2026
Jul 2, 2026Ryan Arthur FDirectoropen-market sale10b5-1200$650.15$130K17,303Jul 7, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-15$701.76$4K17,598May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-115$702.46$11K17,583May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-124$703.46$17K17,559May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-115$704.28$11K17,544May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-114$705.56$10K17,530May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-17$706.74$5K17,523May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-14$707.40$3K17,519May 4, 2026
May 1, 2026Ryan Arthur FDirectoropen-market sale10b5-16$709.45$4K17,513May 4, 2026

Who the insiders are

Everyone who reported a transaction since November 1, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Murphy Andrew JCo-Chief Scientific OfficerOct 14, 2026open-market sale51,974—$3M (27)27 of 27
McCourt MarionEVP CommercialSep 3, 2026open-market sale12,003—$2M (2)2 of 2
Zoghbi Huda YDirectorAug 10, 2026option exercise2,503—$2M (12)12 of 12
Pitofsky JasonSVP ControllerFeb 9, 2026open-market sale5,767—$2M (12)11 of 12
Bassler Bonnie LDirectorJan 7, 2026open-market sale1,703—$2M (2)2 of 2
Guarini KathrynDirectorSep 2, 2026option exercise1,003—$660K (2)2 of 2
Ryan Arthur FDirectorJul 2, 2026open-market sale17,303—$435K (48)48 of 48
Poon Christine ADirectorJan 2, 2026award5,219———
Larosa Joseph JEVP General Counsel and SecretAug 19, 2026option exercise45,392———
Fenimore Christopher R.EVP Finance CFOAug 18, 2026option exercise24,583———
Sing George LDirectorJan 2, 2026award31,007———
Van Plew Daniel PEVP & General Mgr, IndustrialDec 9, 2025tax withholding21,673———
Yancopoulos GeorgeBd. Co-Chair, President & CSO, DirectorDec 31, 2025option exercise339,030———
Schleifer Leonard SBd. Co-Chair, President & CEO, DirectorDec 31, 2025tax withholding214,523———
Thompson Craig B.DirectorJan 2, 2026award775———
Schenkein David PDirectorJan 2, 2026award603———
Goldstein Joseph LDirectorJan 2, 2026award6,703———
Coles N AnthonyDirectorJan 2, 2026award1,714———
Brown Michael SDirectorJan 2, 2026award1,703———
Stahl NeilEVP Research and DevelopmentDec 16, 2024tax withholding48,829———

Questions

Are Regeneron Pharmaceuticals Inc insiders buying or selling?

Over the twelve months to November 1, 2026, 7 insiders at Regeneron Pharmaceuticals Inc sold $12M of stock in the open market, all by officers and directors, and no insider bought. Net, insiders sold $12M. Only open-market purchases and sales are counted.

Who sold the most Regeneron Pharmaceuticals Inc stock in the last year?

Murphy Andrew J (Co-Chief Scientific Officer) sold $3M in 27 open-market sales over the twelve months to November 1, 2026.

Do Regeneron Pharmaceuticals Inc executives sell under 10b5-1 plans?

104 of the 105 open-market sales in the last twelve months (99%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on Regeneron Pharmaceuticals Inc

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.