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): $12,179,271.68

Regeneron Pharmaceuticals Insider Trading History Chart

Regeneron Pharmaceuticals Share Price & Price History

^$789.45

▲ +14.84 (1.92%)

As of 09/17/2026 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
9/3/2026	Marion Mccourt	EVP	Sell	1,131	$857.39	$969,708.09	12,003
9/2/2026	Kathryn Guarini	Director	Sell	400	$850.00	$340,000.00	603
9/2/2026	Marion Mccourt	EVP	Sell	1,215	$850.00	$1,032,750.00	13,134
8/10/2026	Huda Y. Zoghbi	Director	Sell	800	$800.00	$640,000.00	1,703
8/10/2026	Kathryn Guarini	Director	Sell	400	$800.00	$320,000.00	603
7/2/2026	Arthur F. Ryan	Director	Sell	200	$650.15	$130,030.00	17,303
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

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
9/9/2026	The Manufacturers Life Insurance Company	147,961	$92.26M	0.0%	-63.8%	0.144%
9/9/2026	Sequoia Financial Advisors LLC	2,687	$1.68M	0.0%	-15.7%	0.003%
9/9/2026	Tidal Investments LLC	43,896	$27.37M	0.0%	+10.7%	0.043%
9/9/2026	National Pension Service	379,815	$236.83M	0.2%	+2.2%	0.369%
9/9/2026	Krensavage Asset Management LLC	6,000	$3.74M	1.4%	+50.0%	0.006%
9/9/2026	WINTON GROUP Ltd	1,800	$1.12M	0.0%	-87.8%	0.002%
9/9/2026	Engineers Gate Manager LP	15,918	$9.93M	0.1%	+4,309.4%	0.015%
9/9/2026	Cidel Asset Management Inc.	775	$0.48M	0.0%	+7.8%	0.001%
9/9/2026	Plimoth Trust Co. LLC	491	$0.31M	0.1%	-4.3%	0.000%
9/9/2026	Capital Analysts LLC	650	$0.41M	0.0%	+25.0%	0.001%
9/9/2026	Pinnacle Wealth Management Advisory Group LLC	2,713	$1.69M	0.1%	+12.3%	0.003%
9/9/2026	Integrated Wealth Concepts LLC	2,299	$1.43M	0.0%	-45.3%	0.002%
9/9/2026	RFG Advisory LLC	789	$0.49M	0.0%	-42.7%	0.001%
9/9/2026	NewEdge Advisors LLC	11,911	$7.43M	0.0%	+56.5%	0.012%
9/9/2026	Pointe Capital Management LLC	757	$0.47M	0.2%	-7.3%	0.001%
9/9/2026	IFP Advisors Inc	1,352	$0.84M	0.0%	-7.9%	0.001%
9/9/2026	Baird Financial Group Inc.	52,845	$32.95M	0.0%	-8.2%	0.051%
9/9/2026	Beacon Investment Advisory Services Inc.	757	$0.47M	0.0%	-92.3%	0.001%
9/9/2026	Sterling Investment Advisors Ltd.	2,947	$1.84M	0.3%	-5.6%	0.003%
9/9/2026	BayBridge Capital Group LLC	808	$0.50M	0.3%	+91.9%	0.001%
9/8/2026	Allworth Financial LP	2,530	$1.58M	0.0%	-15.4%	0.002%
9/8/2026	Arizona State Retirement System	28,831	$17.98M	0.1%	+1.9%	0.028%
9/8/2026	West Family Investments Inc.	1,017	$0.63M	0.2%	+71.2%	0.001%
9/8/2026	Waverly Advisors LLC	5,584	$3.48M	0.0%	-5.3%	0.005%
9/8/2026	Carmignac Gestion	182,507	$113.83M	1.5%	+56.6%	0.177%
9/8/2026	Empirical Finance LLC	1,482	$0.92M	0.0%	-1.3%	0.001%
9/8/2026	Nykredit A S	38,439	$23.97M	0.1%	N/A	0.037%
9/4/2026	Parkside Financial Bank & Trust	167	$0.10M	0.0%	-13.9%	0.000%
9/3/2026	Anchor Capital Advisors LLC	1,880	$1.17M	0.0%	-81.7%	0.002%
8/27/2026	Corient Private Wealth LP	12,473	$7.78M	0.0%	-31.0%	0.012%
8/26/2026	Amundi	1,013,540	$631.98M	0.2%	+0.4%	0.984%
8/26/2026	HighTower Advisors LLC	64,650	$40.31M	0.0%	+9.7%	0.063%
8/25/2026	Groupe la Francaise	553	$0.32M	0.0%	+25.1%	0.001%
8/25/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	25,474	$15.88M	0.1%	N/A	0.025%
8/23/2026	Washington Trust Advisors Inc.	27,703	$17.27M	1.3%	-3.6%	0.027%
8/23/2026	Ameritas Advisory Services LLC	119	$74K	0.0%	N/A	0.000%
8/23/2026	Guardian Wealth Advisors LLC NC	430	$0.27M	0.0%	-2.9%	0.000%
8/23/2026	Wedmont Private Capital	1,310	$0.87M	0.0%	+9.3%	0.001%
8/23/2026	HB Wealth Management LLC	2,712	$1.69M	0.0%	-21.1%	0.003%
8/23/2026	Saudi Central Bank	7,273	$4.54M	0.1%	+90.8%	0.007%
8/23/2026	Azimuth Capital Investment Management LLC	11,696	$7.29M	0.2%	N/A	0.011%
8/22/2026	Compass Financial Management LLC	65	$41K	0.0%	N/A	0.000%
8/22/2026	AlphaGrep UK Ltd	1,943	$1.21M	0.4%	N/A	0.002%
8/22/2026	Timbuktu Capital Management LLC	85	$53K	0.1%	N/A	0.000%
8/22/2026	Syon Capital LLC	857	$0.53M	0.0%	-16.1%	0.001%
8/22/2026	denkapparat Operations GmbH	1,566	$0.98M	0.3%	+31.4%	0.002%
8/22/2026	Premier Path Wealth Partners LLC	507	$0.32M	0.0%	-24.0%	0.000%
8/22/2026	Concurrent Investment Advisors LLC	2,839	$1.77M	0.0%	+44.3%	0.003%
8/22/2026	NEOS Investment Management LLC	77,322	$48.21M	0.2%	+9.8%	0.075%
8/21/2026	AXQ Capital LP	2,952	$1.84M	0.2%	N/A	0.003%
8/21/2026	Continuum Advisory LLC	73	$46K	0.0%	N/A	0.000%
8/21/2026	Nykredit A S	41,782	$26.05M	0.1%	N/A	0.041%
8/21/2026	B. Metzler seel. Sohn & Co. AG	4,472	$2.79M	0.0%	+37.5%	0.004%
8/21/2026	XML Financial LLC	1,214	$0.76M	0.1%	+3.8%	0.001%
8/21/2026	Independence Bank of Kentucky	332	$0.21M	0.0%	+7.1%	0.000%
8/21/2026	Triumph Capital Management	414	$0.26M	0.0%	+9.2%	0.000%
8/21/2026	Legacy Financial Advisors Inc.	1,438	$0.90M	0.1%	-7.3%	0.001%
8/20/2026	Proficio Capital Partners LLC	909	$0.57M	0.0%	N/A	0.001%
8/20/2026	Nwam LLC	1,680	$1.05M	0.1%	-12.4%	0.002%
8/20/2026	Rehmann Capital Advisory Group	1,812	$1.13M	0.0%	-24.3%	0.002%
8/20/2026	BTG Pactual Asset Management US LLC	591	$0.37M	0.0%	N/A	0.001%
8/20/2026	Headlands Technologies LLC	10,545	$6.58M	0.7%	N/A	0.010%
8/20/2026	Quantitative Investment Management LLC	13,499	$8.42M	0.9%	+347.9%	0.013%
8/20/2026	Ancora Advisors LLC	63	$39K	0.0%	-40.0%	0.000%
8/20/2026	Two Sigma Securities LLC	5,761	$3.59M	0.3%	+407.6%	0.006%
8/20/2026	Benjamin Edwards Inc.	2,613	$1.63M	0.0%	+27.3%	0.003%
8/20/2026	GTS Securities LLC	626	$0.39M	0.0%	-18.4%	0.001%
8/20/2026	Flputnam Investment Management Co.	939	$0.59M	0.0%	+106.8%	0.001%
8/20/2026	Northwestern Mutual Wealth Management Co.	5,101	$3.18M	0.0%	+25.9%	0.005%
8/20/2026	Greenwood Capital Associates LLC	13,873	$8.65M	0.9%	+23.2%	0.013%
8/20/2026	Greenleaf Trust	1,353	$0.84M	0.0%	-8.9%	0.001%
8/19/2026	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	716,560	$446.80M	0.1%	-1.0%	0.696%
8/19/2026	New Mexico Educational Retirement Board	5,000	$3.12M	0.1%	+4.2%	0.005%
8/19/2026	Royal London Asset Management Ltd.	3,887	$2.42M	0.0%	-0.8%	0.004%
8/19/2026	Mufg Securities Americas Inc.	3,010	$1.88M	0.1%	+7.9%	0.003%
8/19/2026	Van ECK Associates Corp	65,332	$40.74M	0.0%	+4.4%	0.063%
8/19/2026	Nissay Asset Management Corp Japan	30,636	$19.10M	0.1%	+6.1%	0.030%
8/19/2026	Wellington Management Group LLP	1,270,087	$791.95M	0.1%	-30.9%	1.234%
8/19/2026	Lombard Odier Asset Management Europe Ltd	5,958	$3.72M	0.0%	-66.7%	0.006%
8/19/2026	Kingsview Wealth Management LLC	675	$0.42M	0.0%	-8.7%	0.001%
8/18/2026	Kimelman & Baird LLC	27,671	$17.25M	0.9%	+154.9%	0.027%
8/18/2026	Kimelman & Baird LLC	27,671	$17.25M	0.9%	N/A	0.027%
8/18/2026	Strait & Sound Wealth Management LLC	714	$0.45M	0.2%	+3.8%	0.001%
8/18/2026	Rakuten Investment Management Inc.	24,580	$15.53M	0.0%	+15.6%	0.024%
8/18/2026	Glenview Trust Co	4,404	$2.75M	0.0%	+11.0%	0.004%
8/18/2026	Glenview Trust Co	3,968	$3.07M	0.0%	N/A	0.004%
8/18/2026	Empowered Funds LLC	33,963	$21.18M	0.1%	+117.5%	0.033%
8/18/2026	United Capital Financial Advisors LLC	2,651	$1.65M	0.0%	-9.8%	0.003%
8/18/2026	Equitable Holdings Inc.	1,747	$1.09M	0.0%	-4.5%	0.002%
8/18/2026	Harvey Capital Management Inc.	4,975	$3.10M	0.6%	-50.1%	0.005%
8/18/2026	Coastal Bridge Advisors LLC	1,614	$1.01M	0.1%	+6.1%	0.002%
8/18/2026	Jefferies Financial Group Inc.	19,740	$12.31M	0.1%	+46.4%	0.019%
8/18/2026	Public Employees Retirement System of Ohio	43,579	$27.17M	0.1%	-0.7%	0.042%
8/18/2026	MASTERINVEST Kapitalanlage GmbH	2,772	$1.73M	0.1%	+1.3%	0.003%
8/17/2026	Proficio Capital Partners LLC	909	$0.57M	0.0%	N/A	0.001%
8/17/2026	Pure Financial Advisors LLC	561	$0.35M	0.0%	+7.3%	0.001%
8/17/2026	Transamerica Financial Advisors LLC	51	$32K	0.0%	-26.1%	0.000%
8/17/2026	Corient Private Wealth LP	13,758	$8.58M	0.0%	-23.9%	0.013%
8/17/2026	Corient Private Wealth LP	14,670	$9.15M	0.0%	N/A	0.014%
8/17/2026	Perennial Investment Advisors LLC	360	$0.22M	0.0%	-4.0%	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: $789.45

$774.78

$789.99

50 Day Range

MA: $764.43

$651.18

$852.03

52 Week Range

Now: $789.45

$541.00

$859.34

Volume

702,779 shs

Average Volume

572,471 shs

Market Capitalization

$81.28 billion

P/E Ratio

19.51

Dividend Yield

0.49%

Beta

0.2

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:
BlackRock Inc. — 8.62%
Bank of America Corp DE — 1.25%
Wellington Management Group LLP — 1.23%
Amundi — 0.98%
Legal & General Group Plc — 0.74%
Bank of New York Mellon Corp — 0.72%
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:
Wellington Management Group LLP
The Manufacturers Life Insurance Company
Handelsbanken Fonder AB
WINTON GROUP Ltd
Lombard Odier Asset Management Europe Ltd
Beacon Investment Advisory Services Inc.
Beacon Investment Advisory Services Inc.
Anchor Capital Advisors LLC
During the previous year, company insiders that have sold Regeneron Pharmaceuticals company stock include:
Arthur F Ryan (Director)
Marion Mccourt (EVP)
Jason Pitofsky (SVP)
Jason Pitofsky (VP)
Christine A Poon (Director)
Bonnie L Bassler (Director)
Huda Y Zoghbi (Director)
Kathryn Guarini (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:
BlackRock Inc.
Legal & General Group Plc
Bank of New York Mellon Corp
Deutsche Bank AG
Man Group plc
Mitsubishi UFJ Asset Management Co. Ltd.
Caisse de depot et placement du Quebec
Canada Pension Plan Investment Board