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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
Apr 3, 2024 (view filing)Apr 12 daysMcCourt MarionEVP CommercialSSale−250$964.73−$241.2K−1.9%13.2K after10b5-1
Mar 15, 2024 (view filing)Mar 141 dayMurphy Andrew JEVP ResearchSSale−5.78K$956.47−$5.53M−10.7%48.3K after14 lots10b5-1
Mar 5, 2024 (view filing)Mar 14 daysRyan Arthur FDirectorSSale−100$982.05−$98.2K−0.5%18.3K after21 lots10b5-1
Mar 5, 2024 (view filing)Mar 14 daysMcCourt MarionEVP CommercialSSale−358$967.50−$346.4K−2.6%13.4K after10b5-1
Feb 28, 2024 (view filing)Feb 262 daysLarosa Joseph JEVP General Counsel and SecretSSale−1.00K$990.00−$990.0K−2.7%36.5K after
Feb 28, 2024 (view filing)Feb 262 daysSing George LDirectorSSale−1.00K$992.50−$992.5K−3.7%26.3K after2 lots
Feb 26, 2024 (view filing)Feb 26Same dayBassler Bonnie LDirectorSSale−854$979.25−$836.3K−38.2%1.38K after
Feb 26, 2024 (view filing)Feb 224 daysLarosa Joseph JEVP General Counsel and SecretSSale−1.00K$967.65−$967.6K−2.6%37.5K after
Feb 26, 2024 (view filing)Feb 22-234 daysSing George LDirectorSSale−3.50K$967.86−$3.39M−11.7%26.3K after4 lots
Feb 16, 2024 (view filing)Feb 142 daysVan Plew Daniel PEVP & General Mgr, IndustrialSSale−10.4K$942.28−$9.83M−33.9%20.4K after13 lots
Feb 12, 2024 (view filing)Feb 8-94 daysSing George LDirectorSSale−1.00K$950.00−$950.0K−3.7%26.3K after2 lots
Feb 12, 2024 (view filing)Feb 93 daysFenimore Christopher R.SVP Finance & CFOSSale−4.92K$953.31−$4.69M−25.5%14.4K after6 lots
Feb 9, 2024 (view filing)Feb 72 daysLarosa Joseph JEVP General Counsel and SecretSSale−1.00K$950.00−$950.0K−2.5%38.5K after
Feb 8, 2024 (view filing)Feb 71 dayStahl NeilEVP Research and DevelopmentSSale−8.04K$950.35−$7.64M−13.4%52.0K after7 lots
Feb 6, 2024 (view filing)Feb 51 dayMcCourt MarionEVP CommercialSSale−1.00K$934.71−$934.7K−6.8%13.8K after
Feb 5, 2024 (view filing)Feb 14 daysRyan Arthur FDirectorSSale−100$954.22−$95.4K−0.5%18.4K after21 lots10b5-1
Feb 2, 2024 (view filing)Feb 11 dayMcCourt MarionEVP CommercialSSale−273$945.61−$258.2K−1.8%14.8K after10b5-1
Jan 31, 2024 (view filing)Jan 301 dayBassler Bonnie LDirectorSSale−827$959.00−$793.1K−37.4%1.38K after10b5-1
Jan 25, 2024 (view filing)Jan 232 daysGoldstein Joseph LDirectorSSale−2.71K$950.00−$2.57M−29.8%6.38K after10b5-1
Jan 4, 2024 (view filing)Jan 22 daysZoghbi Huda YDirectorSSale−1.12K$900.00−$1.01M−47.3%1.25K after10b5-1
Jan 4, 2024 (view filing)Jan 31 dayBassler Bonnie LDirectorSSale−826$914.00−$755.0K−37.4%1.38K after10b5-1
Jan 4, 2024 (view filing)Jan 22 daysRyan Arthur FDirectorSSale−100$899.90−$90.0K−0.5%18.3K after13 lots10b5-1
Jan 4, 2024 (view filing)Jan 22 daysYancopoulos GeorgeBd. Co-Chair, President & CSOSSale−16.8K$900.00−$15.2M−8.6%180.0K after10b5-1
Jan 4, 2024 (view filing)Jan 22 daysMcCourt MarionEVP CommercialSSale−274$873.91−$239.5K−1.8%15.1K after10b5-1
Dec 29, 2023 (view filing)Dec 272 daysBrown Michael SDirectorSSale−2.05K$898.00−$1.84M−62.2%1.25K after10b5-1
Dec 29, 2023 (view filing)Dec 272 daysFenimore Christopher R.SVP ControllerSSale−2.45K$856.71−$2.10M−14.6%14.4K after10b5-1
Dec 26, 2023 (view filing)Dec 21-225 daysFenimore Christopher R.SVP ControllerSSale−1.93K$844.30−$1.63M−10.3%16.8K after3 lots10b5-1
Dec 14, 2023 (view filing)Dec 131 dayBassler Bonnie LDirectorSSale−610$870.00−$530.7K−32.8%1.25K after10b5-1
Dec 12, 2023 (view filing)Dec 111 dayMcCourt MarionEVP CommercialSSale−270$838.44−$226.4K−1.3%20.8K after10b5-1
Dec 6, 2023 (view filing)Dec 51 dayMurphy Andrew JEVP ResearchSSale−6.54K$817.44−$5.34M−9.9%59.4K after12 lots10b5-1
Dec 4, 2023 (view filing)Dec 13 daysRyan Arthur FDirectorSSale−100$817.30−$81.7K−0.5%18.4K after19 lots10b5-1
Nov 15, 2023 (view filing)Nov 141 dayMurphy Andrew JEVP ResearchSSale−6.49K$799.17−$5.19M−9.8%59.4K after11 lots10b5-1
Nov 8, 2023 (view filing)Nov 71 dayRyan Arthur FDirectorSSale−100$827.90−$82.8K−0.5%18.5K after8 lots10b5-1
Nov 2, 2023 (view filing)Nov 11 dayMcCourt MarionEVP CommercialSSale−1.00K$783.91−$783.9K−4.8%19.8K after10b5-1
Oct 17, 2023 (view filing)Oct 134 daysZoghbi Huda YDirectorSSale−1.00K$850.00−$850.0K−44.5%1.25K after10b5-1
Oct 3, 2023 (view filing)Oct 21 dayMcCourt MarionEVP CommercialSSale−1.04K$827.00−$858.4K−5.0%19.8K after10b5-1
Sep 6, 2023 (view filing)Sep 15 daysMcCourt MarionEVP CommercialSSale−250$834.55−$208.6K−1.2%19.8K after10b5-1
Aug 25, 2023 (view filing)Aug 232 daysLandry Robert EEVP Finance CFOSSale−223$844.00−$188.2K−0.7%31.7K after
Aug 25, 2023 (view filing)Aug 232 daysPoon Christine ADirectorSSale−12.3K$839.97−$10.3M−85.8%2.04K after5 lots
Aug 25, 2023 (view filing)Aug 241 dayVan Plew Daniel PEVP & General Mgr, IndustrialSSale−6.20K$841.71−$5.22M−22.4%21.5K after10 lots
Aug 23, 2023 (view filing)Aug 221 dayStahl NeilEVP Research and DevelopmentSSale−11.7K$840.98−$9.81M−18.0%53.1K after3 lots
Aug 23, 2023 (view filing)Aug 212 daysBassler Bonnie LDirectorSSale−853$829.00−$707.1K−40.6%1.25K after10b5-1
Aug 11, 2023 (view filing)Aug 101 dayBassler Bonnie LDirectorSSale−853$789.00−$673.0K−40.6%1.25K after10b5-1
Aug 3, 2023 (view filing)Aug 12 daysMcCourt MarionEVP CommercialSSale−250$744.66−$186.2K−1.2%20.1K after10b5-1
Aug 3, 2023 (view filing)Aug 12 daysRyan Arthur FDirectorSSale−100$736.59−$73.7K−0.5%18.6K after11 lots10b5-1
Jul 6, 2023 (view filing)Jul 33 daysMcCourt MarionEVP CommercialSSale−250$710.09−$177.5K−1.2%20.3K after10b5-1
Jul 6, 2023 (view filing)Jul 33 daysRyan Arthur FDirectorSSale−100$716.88−$71.7K−0.5%18.7K after10 lots10b5-1
Jun 2, 2023 (view filing)Jun 11 dayRyan Arthur FDirectorSSale−100$735.42−$73.5K−0.5%18.8K after9 lots10b5-1
Jun 2, 2023 (view filing)Jun 11 dayMcCourt MarionEVP CommercialSSale−250$736.00−$184.0K−1.2%20.6K after10b5-1
May 3, 2023 (view filing)May 12 daysRyan Arthur FDirectorSSale−100$805.33−$80.5K−0.5%18.9K after7 lots10b5-1