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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
Aug 8, 2022 (view filing)Aug 44 daysRyan Arthur FDirectorSSale−10.5K$621.29−$6.49M−34.7%19.7K after3 lots
Aug 8, 2022 (view filing)Aug 53 daysStahl NeilEVP Research and DevelopmentSSale−23.8K$612.61−$14.6M−31.1%52.8K after16 lots
Aug 2, 2022 (view filing)Aug 11 dayMcCourt MarionEVP CommercialSSale−1.10K$581.53−$639.7K−5.3%19.6K after
Jul 5, 2022 (view filing)Jul 14 daysMcCourt MarionEVP CommercialSSale−1.10K$587.76−$646.5K−5.3%19.6K after
Jun 3, 2022 (view filing)Jun 12 daysMcCourt MarionEVP CommercialSSale−1.10K$669.51−$736.5K−5.3%19.6K after
May 18, 2022 (view filing)May 171 dayMurphy Andrew JEVP ResearchSSale−3.54K$663.68−$2.35M−5.7%58.5K after15 lots
May 3, 2022 (view filing)May 21 dayRyan Arthur FDirectorSSale−100$650.78−$65.1K−0.4%22.2K after15 lots
May 3, 2022 (view filing)May 21 dayMcCourt MarionEVP CommercialSSale−1.10K$656.97−$722.7K−5.3%19.6K after
Apr 11, 2022 (view filing)Apr 8-113 daysLandry Robert EEVP Finance CFOSSale−2.19K$734.61−$1.61M−7.1%28.7K after19 lots
Apr 11, 2022 (view filing)Apr 74 daysLarosa Joseph JEVP General Counsel and SecretSSale−5.11K$721.10−$3.69M−23.2%16.9K after
Apr 11, 2022 (view filing)Apr 74 daysBassler Bonnie LDirectorSSale−1.24K$725.00−$899.0K−53.4%1.08K after
Apr 7, 2022 (view filing)Apr 5-62 daysSchleifer Leonard SPresident & CEOSSale−7.11K$710.05−$5.05M−38.9%11.2K after2 lots
Apr 4, 2022 (view filing)Mar 314 daysSchleifer Leonard SPresident & CEOSSale−2.89K$710.01−$2.05M−13.6%18.3K after
Apr 4, 2022 (view filing)Apr 13 daysRyan Arthur FDirectorSSale−100$692.81−$69.3K−0.4%22.3K after14 lots
Apr 4, 2022 (view filing)Apr 13 daysMcCourt MarionEVP CommercialSSale−1.00K$701.82−$701.8K−4.8%19.6K after
Apr 4, 2022 (view filing)Apr 13 daysLarosa Joseph JEVP General Counsel and SecretSSale−5.11K$690.73−$3.53M−18.9%22.0K after15 lots
Apr 1, 2022 (view filing)Mar 302 daysGoldstein Joseph LDirectorSSale−2.43K$700.00−$1.70M−28.6%6.08K after
Apr 1, 2022 (view filing)Mar 302 daysVagelos P RoyDirectorSSale−28.6K$700.01−$20.0M−54.9%23.5K after2 lots
Apr 1, 2022 (view filing)Mar 302 daysBassler Bonnie LDirectorSSale−1.24K$700.00−$868.0K−53.4%1.08K after
Apr 1, 2022 (view filing)Apr 1Same dayLandry Robert EEVP Finance CFOSSale−316$695.81−$219.9K−1.1%28.7K after2 lots
Mar 31, 2022 (view filing)Mar 29-302 daysBrown Michael SDirectorSSale−1.93K$699.00−$1.35M−64.1%1.08K after2 lots
Mar 30, 2022 (view filing)Mar 291 dayLandry Robert EEVP Finance CFOSSale−2.68K$687.90−$1.85M−8.5%28.7K after14 lots
Mar 23, 2022 (view filing)Mar 212 daysLandry Robert EEVP Finance CFOSSale−300$693.00−$207.9K−1.0%28.7K after
Mar 23, 2022 (view filing)Mar 212 daysTessier-Lavigne MarcDirectorSSale−7.44K$690.00−$5.13M−76.6%2.27K after
Mar 18, 2022 (view filing)Mar 162 daysZoghbi Huda YDirectorSSale−2.00K$675.00−$1.35M−64.9%1.08K after
Mar 18, 2022 (view filing)Mar 16-172 daysLandry Robert EEVP Finance CFOSSale−383$678.95−$260.0K−1.3%28.9K after2 lots
Mar 18, 2022 (view filing)Mar 16-172 daysTessier-Lavigne MarcDirectorSSale−12.2K$678.21−$8.27M−84.3%2.27K after2 lots
Mar 3, 2022 (view filing)Mar 12 daysRyan Arthur FDirectorSSale−100$618.37−$61.8K−0.4%22.4K after17 lots
Mar 3, 2022 (view filing)Mar 12 daysMcCourt MarionEVP CommercialSSale−1.00K$615.39−$615.4K−4.8%19.6K after
Mar 1, 2022 (view filing)Feb 25-284 daysSing George LDirectorSSale−4.00K$618.25−$2.47M−13.3%26.0K after3 lots
Feb 24, 2022 (view filing)Feb 231 dayVan Plew Daniel PEVP & General Mgr, IndustrialSSale−6.78K$613.99−$4.16M−18.2%30.6K after11 lots
Feb 24, 2022 (view filing)Feb 231 dayBrown Michael SDirectorSSale−500$608.68−$304.3K−6.5%7.16K after
Feb 16, 2022 (view filing)Feb 151 dayMurphy Andrew JEVP ResearchSSale−3.54K$629.34−$2.23M−5.7%58.5K after11 lots
Feb 2, 2022 (view filing)Feb 11 dayRyan Arthur FDirectorSSale−100$607.14−$60.7K−0.4%22.5K after12 lots
Feb 2, 2022 (view filing)Feb 11 dayMcCourt MarionEVP CommercialSSale−1.00K$607.46−$607.5K−4.8%19.6K after
Jan 5, 2022 (view filing)Jan 32 daysMcCourt MarionEVP CommercialSSale−1.00K$625.00−$625.0K−4.8%19.6K after
Jan 5, 2022 (view filing)Jan 32 daysRyan Arthur FDirectorSSale−100$624.95−$62.5K−0.4%22.4K after8 lots
Dec 14, 2021 (view filing)Dec 131 dayMcCourt MarionEVP CommercialSSale−344$653.12−$224.7K−1.7%19.6K after
Dec 14, 2021 (view filing)Dec 131 dayLandry Robert EEVP Finance CFOSSale−116$662.50−$76.8K−0.4%29.3K after
Dec 10, 2021 (view filing)Dec 10Same dayMurphy Andrew JEVP ResearchSSale−7.12K$666.27−$4.75M−10.7%59.2K after16 lots
Dec 10, 2021 (view filing)Dec 10Same dayLandry Robert EEVP Finance CFOSSale−781$666.42−$520.5K−2.5%30.0K after16 lots
Dec 10, 2021 (view filing)Dec 91 dayTessier-Lavigne MarcDirectorSSale−3.78K$665.00−$2.52M−64.6%2.08K after
Dec 2, 2021 (view filing)Dec 11 dayRyan Arthur FDirectorSSale−100$637.53−$63.8K−0.4%22.5K after11 lots
Dec 2, 2021 (view filing)Dec 11 dayMcCourt MarionEVP CommercialSSale−1.00K$639.13−$639.1K−5.5%17.0K after
Nov 23, 2021 (view filing)Nov 19-224 daysSing George LDirectorSSale−3.00K$656.67−$1.97M−9.1%29.9K after3 lots
Nov 18, 2021 (view filing)Nov 171 dayLandry Robert EEVP Finance CFOSSale−681$645.08−$439.3K−2.6%26.0K after
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 17, 2021 (view filing)Nov 161 dayMurphy Andrew JEVP ResearchSSale−7.17K$647.17−$4.64M−11.4%55.7K after17 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