REGN Insider Trading

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Insider Trading History
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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

^$609.94

+0.30 (1.20%)

As of 06/18/2026 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

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
6/18/2026	Pacer Advisors Inc.	358,633	$277.09M	0.4%	-9.8%	0.339%
6/15/2026	Carmignac Gestion	116,571	$90.02M	1.4%	+133.3%	0.110%
6/15/2026	Lombard Odier Asset Management Europe Ltd	17,875	$13.81M	0.1%	-14.9%	0.017%
6/12/2026	Militia Capital Management LLC	3,000	$2.32M	0.5%	N/A	0.003%
6/8/2026	Pine Valley Investments Ltd Liability Co	4,942	$3.82M	0.2%	-16.4%	0.005%
6/3/2026	Parallel Advisors LLC	1,107	$0.86M	0.0%	+11.3%	0.001%
6/3/2026	NewEdge Advisors LLC	7,610	$5.88M	0.0%	-23.3%	0.007%
6/1/2026	Caerus Investment Advisors LLC	1,666	$1.29M	0.5%	+1.6%	0.002%
6/1/2026	Keel Point LLC	385	$0.30M	0.0%	-29.1%	0.000%
5/22/2026	Groupama Asset Managment	71,102	$54.94M	0.8%	-0.1%	0.067%
5/22/2026	Segall Bryant & Hamill LLC	1,311	$1.02M	0.0%	N/A	0.001%
5/21/2026	Essential Partners LLC	735	$0.57M	0.2%	-54.3%	0.001%
5/21/2026	Vestor Capital LLC	11,655	$9.01M	0.7%	+482.5%	0.011%
5/21/2026	Groupe la Francaise	442	$0.34M	0.0%	-86.4%	0.000%
5/20/2026	Hobbs Group Advisors LLC	268	$0.21M	0.1%	-14.9%	0.000%
5/19/2026	Western Wealth Management LLC	33	$26K	0.0%	N/A	0.000%
5/19/2026	Bank of America Corp DE	1,189,584	$919.12M	0.1%	+2.8%	1.125%
5/19/2026	Twin Lakes Capital Management LLC	158	$0.12M	0.0%	-40.4%	0.000%
5/19/2026	Kentucky Retirement Systems	6,484	$5.01M	0.2%	-1.0%	0.006%
5/19/2026	Janus Henderson Group PLC	209,248	$161.64M	0.1%	+1.7%	0.198%
5/19/2026	Bull Harbor Capital LLC	2,066	$1.60M	0.4%	N/A	0.002%
5/19/2026	Ashton Thomas Securities LLC	1,259	$0.97M	0.1%	+3.7%	0.001%
5/19/2026	South Dakota Investment Council	12,162	$9.40M	0.2%	-6.2%	0.012%
5/19/2026	Encore Global Management LP	1,100	$0.85M	0.6%	N/A	0.001%
5/18/2026	ADAR1 Capital Management LLC	12,154	$9.39M	0.6%	+0.9%	0.011%
5/18/2026	Amundi	1,009,798	$780.21M	0.2%	+27.5%	0.955%
5/18/2026	EverSource Wealth Advisors LLC	1,880	$1.45M	0.0%	+37.9%	0.002%
5/18/2026	Empire Financial Management Company LLC	1,826	$1.41M	0.3%	N/A	0.002%
5/18/2026	California State Teachers Retirement System	154,201	$119.14M	0.1%	-2.8%	0.146%
5/18/2026	Empowered Funds LLC	15,618	$12.07M	0.1%	-52.8%	0.015%
5/18/2026	Evercore Wealth Management LLC	1,254	$0.97M	0.0%	+6.4%	0.001%
5/16/2026	The Manufacturers Life Insurance Company	408,931	$315.95M	0.3%	-2.9%	0.387%
5/16/2026	Glen Eagle Advisors LLC	114	$88K	0.0%	+48.1%	0.000%
5/16/2026	Quantinno Capital Management LP	48,251	$37.28M	0.1%	+24.8%	0.046%
5/16/2026	SummitTX Capital L.P.	1,713	$1.32M	0.0%	N/A	0.002%
5/16/2026	Lazard Asset Management LLC	17,004	$13.14M	0.0%	+56.9%	0.016%
5/16/2026	Family Manage LLC	3,794	$2.93M	0.4%	+305.8%	0.004%
5/16/2026	Orbimed Advisors LLC	14,700	$11.36M	0.2%	N/A	0.014%
5/15/2026	Blue Chip Partners LLC	1,029	$0.80M	0.1%	+8.9%	0.001%
5/15/2026	Weiss Asset Management LP	336	$0.26M	0.0%	N/A	0.000%
5/15/2026	OMERS ADMINISTRATION Corp	8,179	$6.32M	0.0%	+20.4%	0.008%
5/15/2026	Lombard Odier Asset Management Switzerland SA	3,883	$3M	0.1%	N/A	0.004%
5/15/2026	Lombard Odier Asset Management Europe Ltd	17,875	$13.81M	0.8%	-14.9%	0.017%
5/15/2026	Lombard Odier Asset Management USA Corp	395	$0.31M	0.0%	N/A	0.000%
5/15/2026	Waverly Advisors LLC	5,895	$4.56M	0.0%	+122.9%	0.006%
5/15/2026	Wealth Alliance LLC	485	$0.38M	0.0%	+5.4%	0.000%
5/15/2026	Cumberland Partners Ltd	1,500	$1.16M	0.1%	N/A	0.001%
5/15/2026	Epoch Investment Partners Inc.	238,725	$184.45M	1.1%	-15.1%	0.226%
5/15/2026	Dempze Nancy E	500	$0.39M	0.2%	-28.6%	0.000%
5/15/2026	Entropy Technologies LP	2,753	$2.13M	0.1%	+173.7%	0.003%
5/15/2026	Empirical Finance LLC	1,501	$1.16M	0.1%	-1.0%	0.001%
5/15/2026	Cannell & Spears LLC	68,914	$53.04M	1.1%	-22.9%	0.065%
5/14/2026	Healthcare of Ontario Pension Plan Trust Fund	75,462	$58.31M	0.1%	-34.2%	0.071%
5/14/2026	Dai ichi Life Insurance Company Ltd	4,579	$3.54M	0.1%	-1.1%	0.004%
5/14/2026	Renaissance Technologies LLC	66,802	$51.61M	0.1%	+635.5%	0.063%
5/14/2026	Gabelli Funds LLC	2,197	$1.70M	0.0%	+19.5%	0.002%
5/14/2026	Morningstar Investment Management LLC	2,705	$2.09M	0.1%	-16.9%	0.003%
5/14/2026	GC Wealth Management RIA LLC	2,297	$1.78M	0.1%	+510.9%	0.002%
5/14/2026	Public Employees Retirement System of Ohio	43,886	$33.91M	0.1%	+6.6%	0.042%
5/14/2026	Compound Planning Inc.	1,811	$1.40M	0.0%	+8.1%	0.002%
5/14/2026	Arrowstreet Capital Limited Partnership	171,571	$132.56M	0.1%	-11.9%	0.162%
5/14/2026	Inceptionr LLC	887	$0.69M	0.2%	N/A	0.001%
5/14/2026	Greenline Wealth Management LLC	332	$0.26M	0.3%	+138.8%	0.000%
5/14/2026	Bank of Nova Scotia	97,520	$75.35M	0.1%	-18.7%	0.092%
5/14/2026	Gibbs Wealth Management	2,306	$1.78M	0.2%	+326.2%	0.002%
5/14/2026	Sei Investments Co.	75,000	$57.95M	0.1%	+32.5%	0.071%
5/14/2026	Lido Advisors LLC	11,739	$9.07M	0.0%	-12.5%	0.011%
5/14/2026	Forefront Analytics LLC	460	$0.36M	0.3%	+7.7%	0.000%
5/13/2026	Alpha Family Trust	700	$0.54M	0.3%	-9.7%	0.001%
5/13/2026	Militia Capital Management LLC	3,000	$2.32M	0.5%	N/A	0.003%
5/13/2026	NewEdge Wealth LLC	585	$0.45M	0.0%	-57.2%	0.001%
5/13/2026	Arvest Bank Trust Division	488	$0.38M	0.0%	N/A	0.000%
5/13/2026	CI Investments Inc.	11,747	$9.08M	0.0%	+1.3%	0.011%
5/13/2026	First Trust Advisors LP	346,855	$267.99M	0.2%	+68.6%	0.328%
5/12/2026	Westpac Banking Corp	9,604	$7.42M	0.5%	+39.4%	0.009%
5/12/2026	ABN Amro Investment Solutions	4,860	$3.76M	0.0%	+11.5%	0.005%
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%

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: $609.94

$598.19

$616.24

50 Day Range

MA: $680.12

$600.66

$775.53

52 Week Range

Now: $609.94

$506.38

$821.11

Volume

2,541,557 shs

Average Volume

1,076,700 shs

Market Capitalization

$64.48 billion

P/E Ratio

14.86

Dividend Yield

0.62%

Beta

0.25

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 America Corp DE — 1.13%
Amundi — 0.96%
Bank of New York Mellon Corp — 0.72%
Dimensional Fund Advisors LP — 0.49%
The Manufacturers Life Insurance Company — 0.39%
Pacer Advisors Inc. — 0.34%
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:
Epoch Investment Partners Inc.
Healthcare of Ontario Pension Plan Trust Fund
Pacer Advisors Inc.
Pictet Asset Management Holding SA
Assenagon Asset Management S.A.
Sound Shore Management Inc. CT
Arrowstreet Capital Limited Partnership
Bank of Nova Scotia
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:
Amundi
First Trust Advisors LP
Jennison Associates LLC
Carmignac Gestion
Renaissance Technologies LLC
Bank of America Corp DE
Mediolanum International Funds Ltd
SEB Asset Management AB