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Regeneron Pharmaceuticals, Inc.

REGN
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0000872589

In the last 90 days, Regeneron Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 1,341 institutions reported holding it in 13F filings for Q2 2026, worth $57.1B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Regeneron Pharmaceuticals, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
5 filings
4 insiders, $3.43M in total
Insiders trading
4
Net value
−$3.43M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Regeneron Pharmaceuticals, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Regeneron Pharmaceuticals, Inc.
NameTitleLast reported holdingLast filingFilings, past year
McCourt MarionEVP Commercial12,003Sep 3, 20263
Guarini KathrynDirector603Sep 3, 20263
Larosa Joseph JEVP General Counsel and Secret36,373Aug 21, 20263
Fenimore Christopher R.EVP Finance CFO19,984Aug 20, 20262
Zoghbi Huda YDirector1,703Aug 12, 20263
Ryan Arthur FDirector17,303Jul 7, 20266
Pitofsky JasonSVP Controller4,272Feb 11, 20263
Bassler Bonnie LDirector1,703Jan 8, 20263
Brown Michael SDirector1,703Jan 6, 20261
Poon Christine ADirector5,219Jan 6, 20262
Coles N AnthonyDirector1,714Jan 6, 20261
Sing George LDirector31,007Jan 6, 20262
Goldstein Joseph LDirector6,703Jan 6, 20261
Thompson Craig B.Director775Jan 6, 20261
Schenkein David PDirector603Jan 6, 20261
Schleifer Leonard SBd. Co-Chair, President & CEO214,523Jan 5, 20262
Yancopoulos GeorgeBd. Co-Chair, President & CSO310,460Jan 5, 20262
Van Plew Daniel PEVP & General Mgr, Industrial21,673Dec 11, 20252
Murphy Andrew JEVP Research47,833Dec 11, 20253
Stahl NeilEVP Research and Development48,829Dec 18, 20240
Landry Robert EEVP Finance CFO23,693Feb 6, 20240
Vagelos P RoyDirector125,493IndirectApr 5, 20230
Tessier-Lavigne MarcDirector2,434Jan 5, 20230

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 2, 2021 (view filing)Jul 11 dayBassler Bonnie LDirectorSSale−2.56K$575.00−$1.47M−74.2%891 after
Jul 2, 2021 (view filing)Jul 11 dayRyan Arthur FDirectorSSale−100$564.50−$56.5K−0.4%23.5K after13 lots
Jul 2, 2021 (view filing)Jul 11 dayMcCourt MarionEVP CommercialSSale−1.00K$556.60−$556.6K−5.5%17.0K after
Jul 7, 2021 (view filing)Jul 61 dayLarosa Joseph JEVP General Counsel and SecretSSale−3.40K$580.00−$1.97M−20.5%13.2K after
Aug 4, 2021 (view filing)Aug 22 daysMcCourt MarionEVP CommercialSSale−1.00K$577.12−$577.1K−5.5%17.0K after
Aug 4, 2021 (view filing)Aug 22 daysRyan Arthur FDirectorSSale−100$577.95−$57.8K−0.4%23.4K after9 lots
Aug 6, 2021 (view filing)Aug 51 dayBassler Bonnie LDirectorSSale−2.56K$600.00−$1.54M−74.2%891 after
Aug 6, 2021 (view filing)Aug 51 dayYancopoulos GeorgePresident and Chief ScientificSSale−50.0K$600.06−$30.0M−5.1%937.5K after
Aug 10, 2021 (view filing)Aug 6-104 daysSing George LDirectorSSale−6.60K$612.35−$4.04M−12.1%48.1K after5 lots
Aug 10, 2021 (view filing)Aug 64 daysSing George LDirectorSSale−350$612.42−$214.3K−9.5%3.35K after
Aug 10, 2021 (view filing)Aug 91 dayBrown Michael SDirectorSSale−1.69K$612.38−$1.03M−18.0%7.66K after
Aug 10, 2021 (view filing)Aug 10Same dayVan Plew Daniel PEVP & General Mgr, IndustrialSSale−6.60K$611.86−$4.04M−19.7%26.9K after11 lots
Aug 10, 2021 (view filing)Aug 9-101 dayLandry Robert EEVP Finance CFOSSale−901$614.30−$553.5K−3.4%25.9K after16 lots
Aug 13, 2021 (view filing)Aug 11-132 daysSing George LDirectorSSale−3.50K$617.71−$2.16M−7.3%44.6K after4 lots
Aug 13, 2021 (view filing)Aug 112 daysSing George LDirectorSSale−300$620.00−$186.0K−9.0%3.05K after
Aug 16, 2021 (view filing)Aug 133 daysColes N AnthonyDirectorSSale−2.00K$625.00−$1.25M−68.9%902 after
Aug 17, 2021 (view filing)Aug 161 daySing George LDirectorSSale−705$630.00−$444.1K−1.6%43.9K after
Aug 17, 2021 (view filing)Aug 161 daySing George LDirectorSSale−1.00K$627.50−$627.5K−32.8%2.05K after
Aug 17, 2021 (view filing)Aug 13-164 daysYancopoulos GeorgePresident and Chief ScientificSSale−50.0K$625.29−$31.3M−5.3%887.5K after3 lots
Aug 17, 2021 (view filing)Aug 161 dayBassler Bonnie LDirectorSSale−1.22K$630.00−$768.0K−57.8%891 after
Aug 17, 2021 (view filing)Aug 161 daySchleifer Leonard SPresident & CEOSSale−10.0K$624.36−$6.24M−24.3%31.2K after15 lots
Aug 19, 2021 (view filing)Aug 17-182 daysColes N AnthonyDirectorSSale−6.00K$650.00−$3.90M−86.9%902 after2 lots
Aug 19, 2021 (view filing)Aug 181 dayVagelos P RoyDirectorSSale−10.0K$650.04−$6.53M−21.0%37.7K after
Aug 20, 2021 (view filing)Aug 182 daysSchleifer Leonard SPresident & CEOSSale−200.0K$650.03−$130.0M−39.6%304.7K after
Aug 20, 2021 (view filing)Aug 191 daySchleifer Leonard SPresident & CEOSSale−10.0K$660.03−$6.60M−32.1%21.2K after
Aug 24, 2021 (view filing)Aug 231 dayFenimore Christopher R.SVP ControllerSSale−4.78K$655.31−$3.13M−14.7%27.7K afterFrom original7 lots
Aug 24, 2021 (view filing)Aug 231 dayLarosa Joseph JEVP General Counsel and SecretSSale−3.42K$661.84−$2.27M−20.6%13.2K after3 lots
Aug 30, 2021 (view filing)Aug 30Same daySing George LDirectorSSale−1.00K$672.50−$672.5K−2.3%42.9K after2 lots
Aug 30, 2021 (view filing)Aug 26-304 daysSing George LDirectorSSale−700$671.29−$469.9K−28.6%1.75K after3 lots
Aug 31, 2021 (view filing)Aug 274 daysPoon Christine ADirectorSSale−15.0K$668.09−$10.0M−89.9%1.68K after11 lots
Sep 3, 2021 (view filing)Sep 12 daysMcCourt MarionEVP CommercialSSale−1.00K$674.72−$674.7K−5.5%17.0K after
Sep 3, 2021 (view filing)Sep 12 daysRyan Arthur FDirectorSSale−100$676.28−$67.6K−0.4%23.3K after13 lots
Sep 13, 2021 (view filing)Sep 103 daysGoldstein Joseph LDirectorSSale−2.48K$650.00−$1.61M−29.6%5.89K after
Sep 15, 2021 (view filing)Sep 132 daysTessier-Lavigne MarcDirectorSSale−12.8K$641.71−$8.18M−86.0%2.08K after17 lots
Sep 15, 2021 (view filing)Sep 13-142 daysZoghbi Huda YDirectorSSale−1.00K$650.00−$650.0K−52.9%891 after2 lots
Sep 15, 2021 (view filing)Sep 132 daysBrown Michael SDirectorSSale−9.70K$648.16−$6.29M−91.6%891 after17 lots
Sep 17, 2021 (view filing)Sep 152 daysColes N AnthonyDirectorSSale−11.9K$658.98−$7.87M−93.0%902 after13 lots
Oct 4, 2021 (view filing)Oct 13 daysMcCourt MarionEVP CommercialSSale−1.00K$576.75−$576.8K−5.5%17.0K after
Oct 4, 2021 (view filing)Oct 13 daysRyan Arthur FDirectorSSale−100$569.49−$56.9K−0.4%23.2K after17 lots
Nov 3, 2021 (view filing)Nov 12 daysMcCourt MarionEVP CommercialSSale−1.00K$640.00−$640.0K−5.5%17.0K after
Nov 3, 2021 (view filing)Nov 12 daysRyan Arthur FDirectorSSale−100$642.52−$64.3K−0.4%23.1K after10 lots
Nov 17, 2021 (view filing)Nov 161 dayVan Plew Daniel PEVP & General Mgr, IndustrialSSale−6.78K$656.86−$4.45M−20.1%26.9K after8 lots
Nov 17, 2021 (view filing)Nov 161 dayMurphy Andrew JEVP ResearchSSale−7.17K$647.17−$4.64M−11.4%55.7K after17 lots
Nov 18, 2021 (view filing)Nov 16-182 daysSing George LDirectorSSale−10.0K$653.76−$6.54M−23.3%32.9K after4 lots
Nov 18, 2021 (view filing)Nov 162 daysSing George LDirectorSSale−750$650.00−$487.5K−42.9%1.00K after
Nov 18, 2021 (view filing)Nov 171 dayLandry Robert EEVP Finance CFOSSale−681$645.08−$439.3K−2.6%26.0K after
Nov 23, 2021 (view filing)Nov 19-224 daysSing George LDirectorSSale−3.00K$656.67−$1.97M−9.1%29.9K after3 lots
Dec 2, 2021 (view filing)Dec 11 dayMcCourt MarionEVP CommercialSSale−1.00K$639.13−$639.1K−5.5%17.0K after
Dec 2, 2021 (view filing)Dec 11 dayRyan Arthur FDirectorSSale−100$637.53−$63.8K−0.4%22.5K after11 lots
Dec 10, 2021 (view filing)Dec 91 dayTessier-Lavigne MarcDirectorSSale−3.78K$665.00−$2.52M−64.6%2.08K after