REGN Insider Trading

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About

Insider Ownership Percentage: 6.97%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $8,746,783.59

Regeneron Pharmaceuticals Insider Trading History Chart

Regeneron Pharmaceuticals Share Price & Price History

^$714.89

▲ +5.79 (0.82%)

As of 05/8/2026 04:00 PM ET

Days: 30 | 90 | 365

Regeneron Pharmaceuticals Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
5/1/2026	Arthur F. Ryan	Director	Sell	100	$705.24	$70,524.00	17,503
2/19/2026	Huda Y. Zoghbi	Director	Sell	1,638	$781.33	$1,279,818.54	1,703
2/9/2026	Arthur F. Ryan	Director	Sell	100	$778.53	$77,853.00	17,803
2/9/2026	Jason Pitofsky	SVP	Sell	2,036	$778.52	$1,585,066.72	4,272
1/7/2026	Bonnie L. Bassler	Director	Sell	1,500	$800.00	$1,200,000.00	1,703
11/7/2025	Jason Pitofsky	VP	Sell	431	$651.43	$280,766.33	4,233
10/29/2025	Christine A. Poon	Director	Sell	6,500	$654.27	$4,252,755.00	2,352
8/28/2024	Christopher R. Fenimore	CFO	Sell	5,680	$1,205.33	$6,846,274.40	15,305
8/7/2024	Jason Pitofsky	VP	Sell	487	$1,070.00	$521,090.00	4,204
7/11/2024	Joseph J. Larosa	EVP	Sell	1,866	$1,088.95	$2,031,980.70	37,937
7/1/2024	Arthur F. Ryan	Director	Sell	100	$1,059.24	$105,924.00	17,882
7/1/2024	Marion Mccourt	EVP	Sell	1,137	$1,047.11	$1,190,564.07	12,931
6/24/2024	Bonnie L. Bassler	Director	Sell	756	$1,062.00	$802,872.00	1,382
6/14/2024	Michael S. Brown	Director	Sell	1,535	$1,040.00	$1,596,400.00	1,382
6/11/2024	Leonard S. Schleifer	CEO	Sell	9,064	$1,015.43	$9,203,857.52	55,134
6/6/2024	Leonard S. Schleifer	CEO	Sell	787	$1,015.02	$798,820.74	64,198
6/5/2024	Bonnie L. Bassler	Director	Sell	827	$1,011.00	$836,097.00	1,382
5/28/2024	Michael S. Brown	Director	Sell	1,172	$974.86	$1,142,535.92	1,382
5/17/2024	Leonard S. Schleifer	CEO	Sell	22,830	$979.23	$22,355,820.90	466,877
5/14/2024	Leonard S. Schleifer	CEO	Sell	25,000	$979.25	$24,481,250.00	408,200
3/14/2024	Andrew J. Murphy	EVP	Sell	5,783	$956.47	$5,531,266.01	48,306
3/1/2024	Arthur F. Ryan	Director	Sell	100	$982.05	$98,205.00	18,282
3/1/2024	Marion Mccourt	EVP	Sell	358	$967.50	$346,365.00	13,431
2/26/2024	Bonnie L. Bassler	Director	Sell	854	$979.25	$836,279.50	1,382
2/22/2024	Joseph J. Larosa	EVP	Sell	1,000	$967.65	$967,650.00	37,543
2/7/2024	Joseph J. Larosa	EVP	Sell	1,000	$950.00	$950,000.00	38,543
2/5/2024	Marion Mccourt	EVP	Sell	1,000	$934.71	$934,710.00	13,789
2/1/2024	Arthur F. Ryan	Director	Sell	100	$954.22	$95,422.00	18,382
1/30/2024	Bonnie L. Bassler	Director	Sell	827	$959.00	$793,093.00	1,382
1/23/2024	Joseph L. Goldstein	Director	Sell	2,707	$950.00	$2,571,650.00	6,382
1/2/2024	George D. Yancopoulos	Insider	Sell	16,848	$900.00	$15,163,200.00	180,000
12/27/2023	Christopher R. Fenimore	SVP	Sell	2,448	$856.71	$2,097,226.08	14,372
12/27/2023	Michael S. Brown	Director	Sell	2,049	$898.00	$1,840,002.00	1,247
12/21/2023	Christopher R. Fenimore	SVP	Sell	1,680	$844.01	$1,417,936.80	17,070
12/1/2023	Arthur F. Ryan	Director	Sell	100	$817.30	$81,730.00	18,447
11/7/2023	Arthur F. Ryan	Director	Sell	100	$827.90	$82,790.00	18,547
11/1/2023	Marion Mccourt	EVP	Sell	1,000	$783.91	$783,910.00	19,803
10/13/2023	Huda Y. Zoghbi	Director	Sell	1,000	$850.00	$850,000.00	1,247
10/2/2023	Marion Mccourt	EVP	Sell	1,038	$827.00	$858,426.00	19,803
8/24/2023	Plew Daniel P Van	EVP	Sell	6,197	$841.71	$5,216,076.87	21,508
8/23/2023	Christine A. Poon	Director	Sell	12,280	$839.97	$10,314,831.60	2,037
8/23/2023	Robert E. Landry	CFO	Sell	223	$844.00	$188,212.00	31,699
8/22/2023	Neil Stahl	EVP	Sell	11,665	$840.98	$9,810,031.70	53,100
8/21/2023	Bonnie L. Bassler	Director	Sell	853	$829.00	$707,137.00	1,247
8/10/2023	Bonnie L. Bassler	Director	Sell	853	$789.00	$673,017.00	1,247
8/1/2023	Arthur F. Ryan	Director	Sell	100	$736.59	$73,659.00	18,647
7/3/2023	Arthur F. Ryan	Director	Sell	100	$716.88	$71,688.00	18,747
7/3/2023	Marion Mccourt	EVP	Sell	250	$710.09	$177,522.50	20,303
6/1/2023	Arthur F. Ryan	Director	Sell	100	$735.42	$73,542.00	18,847
6/1/2023	Marion Mccourt	EVP	Sell	250	$736.00	$184,000.00	20,553

SEC Filings (Institutional Ownership Changes) for Regeneron Pharmaceuticals (NASDAQ:REGN)

83.31% of Regeneron Pharmaceuticals stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Regeneron Pharmaceuticals Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
5/8/2026	PNC Financial Services Group Inc.	18,226	$14.08M	0.0%	+5.0%	0.017%
5/8/2026	Oslo Pensjonsforsikring AS	626	$0.48M	0.1%	N/A	0.001%
5/8/2026	Baader Bank Aktiengesellschaft	6,811	$5.26M	0.4%	+138.7%	0.006%
5/8/2026	Andra AP fonden	4,232	$3.27M	0.0%	N/A	0.004%
5/8/2026	DUTCH ASSET Corp	300	$0.23M	0.2%	N/A	0.000%
5/8/2026	Madison Asset Management LLC	5,784	$4.47M	0.1%	-3.1%	0.005%
5/8/2026	Summit Global Investments	9,804	$7.58M	0.4%	-0.2%	0.009%
5/8/2026	Cassaday & Co Wealth Management LLC	100	$77K	0.0%	N/A	0.000%
5/8/2026	Johnson Financial Group Inc.	3,418	$2.64M	0.1%	+6.2%	0.003%
5/8/2026	Commerzbank Aktiengesellschaft FI	539	$0.42M	0.0%	-6.7%	0.001%
5/7/2026	AlTi Global Inc.	1,857	$1.44M	0.0%	+312.7%	0.002%
5/7/2026	Earned Wealth Advisors LLC	785	$0.61M	0.0%	+17.0%	0.001%
5/7/2026	Meeder Asset Management Inc.	6,094	$4.71M	0.3%	+12.4%	0.006%
5/7/2026	Meeder Advisory Services Inc.	1,371	$1.06M	0.0%	+9.7%	0.001%
5/7/2026	Dimensional Fund Advisors LP	513,060	$396.29M	0.1%	+2.7%	0.485%
5/7/2026	Sound Shore Management Inc. CT	150,960	$116.64M	3.9%	-14.2%	0.143%
5/7/2026	Parallel Advisors LLC	1,107	$0.86M	0.0%	+11.3%	0.001%
5/7/2026	KBC Group NV	38,473	$29.73M	0.1%	+0.7%	0.036%
5/7/2026	SEB Asset Management AB	21,697	$16.76M	0.1%	N/A	0.021%
5/7/2026	Swiss National Bank	303,140	$234.22M	0.1%	+6.2%	0.287%
5/7/2026	AIA Group Ltd	8,460	$6.54M	0.1%	+14.2%	0.008%
5/7/2026	Mediolanum International Funds Ltd	71,209	$53.36M	0.6%	+56.4%	0.067%
5/7/2026	Spartan Wealth Advisory Services LLC	1,494	$1.15M	0.1%	N/A	0.001%
5/7/2026	Arjuna Capital	457	$0.35M	0.1%	+3.2%	0.000%
5/6/2026	Jennison Associates LLC	115,199	$89.01M	0.1%	N/A	0.109%
5/6/2026	IMA Advisory Services Inc.	2,132	$1.65M	0.2%	-0.7%	0.002%
5/6/2026	California Public Employees Retirement System	218,772	$169.03M	0.1%	+8.8%	0.207%
5/6/2026	Simon Quick Advisors LLC	347	$0.27M	0.0%	-14.1%	0.000%
5/6/2026	John G Ullman & Associates Inc.	910	$0.70M	0.1%	-50.3%	0.001%
5/6/2026	Kera Capital Partners Inc.	593	$0.46M	0.1%	+24.8%	0.001%
5/6/2026	Assetmark Inc.	12,316	$9.52M	0.0%	+9.2%	0.012%
5/6/2026	PeakShares LLC	1,450	$1.12M	1.0%	+1.5%	0.001%
5/6/2026	Bessemer Group Inc.	1,728	$1.34M	0.0%	-60.6%	0.002%
5/6/2026	Allspring Global Investments Holdings LLC	52,497	$40.80M	0.1%	+39.8%	0.050%
5/6/2026	Independent Financial Group LLC	1,012	$0.78M	0.0%	N/A	0.001%
5/6/2026	Prosperity Consulting Group LLC	360	$0.28M	0.0%	+5.9%	0.000%
5/6/2026	Aware Super Pty Ltd as trustee of Aware Super	3,803	$2.94M	0.0%	N/A	0.004%
5/5/2026	Wealthfront Advisers LLC	8,344	$6.45M	0.0%	+2.5%	0.008%
5/5/2026	D.A. Davidson & CO.	525	$0.41M	0.0%	-3.5%	0.000%
5/5/2026	Twin Capital Management Inc.	1,213	$0.94M	0.1%	-2.6%	0.001%
5/5/2026	Bank of New York Mellon Corp	765,411	$591.39M	0.1%	+0.2%	0.724%
5/5/2026	Illinois Municipal Retirement Fund	24,865	$19.21M	0.2%	-3.8%	0.024%
5/5/2026	Geneos Wealth Management Inc.	835	$0.65M	0.0%	+1.8%	0.001%
5/5/2026	Harel Insurance Investments & Financial Services Ltd.	2,104	$1.63M	0.0%	-1.5%	0.002%
5/5/2026	MASTERINVEST Kapitalanlage GmbH	2,737	$2.12M	0.2%	-13.8%	0.003%
5/5/2026	Hudson Canyon Capital Management	2,759	$2.13M	1.3%	-0.5%	0.003%
5/5/2026	Signet Financial Management LLC	3,895	$3.01M	0.3%	-1.9%	0.004%
5/5/2026	Sanctuary Advisors LLC	40,631	$31.39M	0.2%	+4.2%	0.038%
5/5/2026	Sterling Investment Advisors Ltd.	3,122	$2.41M	0.4%	-6.9%	0.003%
5/5/2026	Ellerson Group Inc. ADV	8,079	$6.24M	4.1%	+0.5%	0.008%
5/5/2026	Sigma Planning Corp	2,012	$1.56M	0.0%	+159.9%	0.002%
5/5/2026	Checchi Capital Advisers LLC	595	$0.46M	0.0%	+22.9%	0.001%
5/5/2026	Nwam LLC	1,917	$1.48M	0.1%	+11.3%	0.002%
5/5/2026	Maryland State Retirement & Pension System	5,090	$3.93M	0.1%	+1.2%	0.005%
5/4/2026	AMG National Trust Bank	5,378	$4.16M	0.1%	-2.9%	0.005%
5/4/2026	Mcdonald Capital Investors Inc. CA	205,871	$159.06M	10.9%	-1.1%	0.195%
5/4/2026	State of Michigan Retirement System	26,321	$20.34M	0.1%	-0.4%	0.025%
5/4/2026	Principal Financial Group Inc.	120,425	$93.05M	0.0%	+0.7%	0.114%
5/4/2026	Chicago Partners Investment Group LLC	2,001	$1.49M	0.0%	+48.8%	0.002%
5/4/2026	Applied Finance Capital Management LLC	16,835	$13.01M	1.0%	-11.8%	0.016%
5/4/2026	Procyon Advisors LLC	889	$0.69M	0.0%	+102.0%	0.001%
5/2/2026	Citizens Business Bank	6,090	$4.71M	0.8%	-1.5%	0.006%
5/2/2026	LGT Fund Management Co Ltd.	314	$0.24M	0.0%	-34.7%	0.000%
5/2/2026	Anchor Investment Management LLC	184	$0.14M	0.0%	-26.4%	0.000%
5/2/2026	UNIVEST FINANCIAL Corp	14,206	$10.98M	0.6%	-26.8%	0.013%
5/1/2026	Commonwealth of Pennsylvania Public School Empls Retrmt SYS	23,481	$18.14M	0.1%	+0.2%	0.022%
5/1/2026	Citizens Financial Group Inc. RI	4,775	$3.69M	0.1%	+23.7%	0.005%
5/1/2026	Fifth Third Bancorp	34,910	$26.97M	0.0%	+126.3%	0.033%
5/1/2026	Sovran Advisors LLC	6,019	$4.26M	0.3%	-30.2%	0.006%
5/1/2026	Simplicity Wealth LLC	947	$0.73M	0.0%	+12.1%	0.001%
5/1/2026	Candriam S.C.A.	186,388	$144.01M	0.7%	-9.2%	0.176%
5/1/2026	Osprey Private Wealth LLC	9,439	$7.29M	2.1%	+87.5%	0.009%
5/1/2026	Conning Inc.	461	$0.36M	0.0%	-13.2%	0.000%
5/1/2026	Sequoia Financial Advisors LLC	3,189	$2.46M	0.0%	+8.1%	0.003%
5/1/2026	Kornitzer Capital Management Inc. KS	2,074	$1.60M	0.0%	+9.7%	0.002%
4/30/2026	Stiles Financial Services Inc	3,650	$2.82M	0.9%	-9.0%	0.003%
4/30/2026	Equitable Trust Co.	556	$0.43M	0.0%	+5.9%	0.001%
4/30/2026	Summit Securities Group LLC	138	$0.11M	0.0%	-55.2%	0.000%
4/30/2026	First Horizon Corp	783	$0.61M	0.0%	-33.2%	0.001%
4/30/2026	Kestra Advisory Services LLC	4,470	$3.45M	0.0%	+1.5%	0.004%
4/30/2026	Azzad Asset Management Inc. ADV	981	$0.76M	0.1%	N/A	0.001%
4/30/2026	Sumitomo Mitsui Trust Group Inc.	273,669	$211.45M	0.1%	-4.0%	0.259%
4/30/2026	Resona Asset Management Co. Ltd.	32,060	$24.64M	0.1%	+0.3%	0.030%
4/30/2026	Lipe & Dalton	289	$0.22M	0.1%	-6.5%	0.000%
4/30/2026	Personal CFO Solutions LLC	1,695	$1.31M	0.2%	-8.5%	0.002%
4/30/2026	Seelaus Asset Management LLC	356	$0.28M	0.2%	N/A	0.000%
4/30/2026	Greenwood Capital Associates LLC	11,261	$8.70M	1.0%	-2.3%	0.011%
4/29/2026	Lmcg Investments LLC	38,979	$30.12M	1.8%	-2.1%	0.037%
4/29/2026	Childress Capital Advisors LLC	567	$0.44M	0.1%	+38.6%	0.001%
4/29/2026	Flatrock Wealth Partners LLC	377	$0.29M	0.1%	N/A	0.000%
4/29/2026	Jackson Thornton Wealth Management LLC	1,091	$0.82M	0.1%	+10.2%	0.001%
4/29/2026	Resonant Capital Advisors LLC	501	$0.39M	0.0%	+16.0%	0.000%
4/29/2026	Swedbank AB	215,590	$166.57M	0.2%	-5.4%	0.204%
4/29/2026	Integrated Advisors Network LLC	828	$0.64M	0.0%	N/A	0.001%
4/28/2026	Busey Bank	1,054	$0.81M	0.0%	-9.1%	0.001%
4/28/2026	Whittier Trust Co. of Nevada Inc.	69	$53K	0.0%	+30.2%	0.000%
4/28/2026	Whittier Trust Co.	262	$0.20M	0.0%	-26.6%	0.000%
4/28/2026	Columbia Bank	2,066	$1.60M	0.5%	+5.5%	0.002%
4/28/2026	DGS Capital Management LLC	415	$0.32M	0.1%	+36.1%	0.000%
4/28/2026	Ascentis Independent Advisors	476	$0.37M	0.0%	+34.1%	0.000%

Data available starting January 2016

Regeneron Pharmaceuticals, Inc. discovers, invents, develops, manufactures, and commercializes medicines for treating various diseases worldwide. The company's products include EYLEA injection to treat wet age-related macular degeneration and diabetic macular edema; myopic choroidal neovascularization; diabetic retinopathy; neovascular glaucoma; and retinopathy of prematurity. It also provides Dupixent injection to treat atopic dermatitis and asthma in adults and pediatrics; Libtayo injection to treat metastatic or locally advanced cutaneous squamous cell carcinoma; Praluent injection for heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular disease in adults; REGEN-COV for covid-19; and Kevzara solution for treating rheumatoid arthritis in adults. In addition, the company offers Inmazeb injection for infection caused by Zaire ebolavirus; ARCALYST injection for cryopyrin-associated periodic syndromes, including familial cold auto-inflammatory syndrome and muckle-wells syndrome; and ZALTRAP injection for intravenous infusion to treat metastatic colorectal cancer; and develops product candidates for treating patients with eye, allergic and inflammatory, cardiovascular and metabolic, infectious, and rare diseases; and cancer, pain, and hematologic conditions. It has collaboration with Mammoth Biosciences, Inc. to research, develop and commercialize in vivo CRISPR-based gene editing therapies for multiple tissues and cell types. The company was incorporated in 1988 and is headquartered in Tarrytown, New York.

Today's Range

Now: $714.89

$708.36

$717.99

50 Day Range

MA: $752.68

$686.36

$790.81

52 Week Range

Now: $714.89

$476.49

$821.11

Volume

559,041 shs

Average Volume

755,624 shs

Market Capitalization

$75.58 billion

P/E Ratio

17.42

Dividend Yield

0.53%

Beta

0.3

Who are the company insiders with the largest holdings of Regeneron Pharmaceuticals?: Regeneron Pharmaceuticals' top insider investors include:
George Yancopoulos (Insider)
Leonard S Schleifer (CEO)
P Roy Vagelos (Chairman)
P Roy Vagelos (Director)
George L Sing (Director)
George Sing (Director)
Joseph L Goldstein (Director)
Robert J Terifay (EVP)
Murray Goldberg (SVP)
Neil Stahl (EVP)
Learn More about top insider investors at Regeneron Pharmaceuticals.
Who are the major institutional investors of Regeneron Pharmaceuticals?: Regeneron Pharmaceuticals' top institutional investors include:
Bank of New York Mellon Corp — 0.72%
Dimensional Fund Advisors LP — 0.49%
Pictet Asset Management Holding SA — 0.32%
Swiss National Bank — 0.29%
Sumitomo Mitsui Trust Group Inc. — 0.26%
California Public Employees Retirement System — 0.21%
Learn More about top institutional investors of Regeneron Pharmaceuticals stock.
Which institutional investors are selling Regeneron Pharmaceuticals stock?: In the previous quarter, REGN stock was sold by these institutional investors:
Pictet Asset Management Holding SA
Assenagon Asset Management S.A.
Sound Shore Management Inc. CT
Simplify Asset Management Inc.
Candriam S.C.A.
Swedbank AB
Sumitomo Mitsui Trust Group Inc.
Fideuram Intesa Sanpaolo Private Banking S.P.A.
During the previous year, company insiders that have sold Regeneron Pharmaceuticals company stock include:
Arthur F Ryan (Director)
Jason Pitofsky (SVP)
Jason Pitofsky (VP)
Christine A Poon (Director)
Bonnie L Bassler (Director)
Huda Y Zoghbi (Director)
Learn More investors selling Regeneron Pharmaceuticals stock.
Which institutional investors are buying Regeneron Pharmaceuticals stock?: During the last quarter, REGN stock was purchased by institutional investors including:
Jennison Associates LLC
Mediolanum International Funds Ltd
SEB Asset Management AB
Fifth Third Bancorp
California Public Employees Retirement System
Swiss National Bank
Allspring Global Investments Holdings LLC
OP Asset Management Ltd