Institutional shares held 86.4 Million
2.38M calls
1.61M puts
Total value of holdings $59.9B
$1.65B calls
$1.12B puts
Market Cap $74.3B
107,190,000 Shares Out.
Institutional ownership 80.63%
# of Institutions 1,478


Latest Institutional Activity in REGN

Top Purchases

Q4 2025
Sg Americas Securities, LLC Shares Held: 131K ($90.9M)
Q4 2025
Nordea Investment Management Ab Shares Held: 137K ($95.2M)
Q4 2025
Wealth Enhancement Advisory Services, LLC Shares Held: 22.4K ($15.5M)
Q4 2025
Union Bancaire Privee, Ubp Sa Shares Held: 3.99K ($2.77M)
Q4 2025
Massmutual Trust CO Fsb Shares Held: 11.1K ($7.7M)

Top Sells

Q4 2025
Assenagon Asset Management S.A. Shares Held: 233K ($162M)
Q4 2025
Diversified Trust CO Shares Held: 3.46K ($2.4M)
Q4 2025
Fulton Bank, N.A. Shares Held: 2.31K ($1.6M)
Q4 2025
Central Bank & Trust CO Shares Held: 2.44K ($1.69M)
Q4 2025
Harbor Investment Advisory, LLC Shares Held: 2.5K ($1.73M)

About REGN

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; and diabetic retinopathy, as well as macular edema following retinal vein occlusion, including macular edema following central retinal vein occlusion and macular edema following branch retinal vein occlusion. 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 and license agreements with Sanofi; Bayer; Teva Pharmaceutical Industries Ltd.; Mitsubishi Tanabe Pharma Corporation; Alnylam Pharmaceuticals, Inc.; Roche Pharmaceuticals; and Kiniksa Pharmaceuticals, Ltd., as well as has an agreement with the U.S. Department of Health and Human Services, as well as with Zai Lab Limited; Intellia Therapeutics, Inc.; Biomedical Advanced Research Development Authority; and AstraZeneca PLC. The company was incorporated in 1988 and is headquartered in Tarrytown, New York.


Insider Transactions at REGN

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
466K Shares
From 24 Insiders
Grant, award, or other acquisition 19.2K shares
Exercise of conversion of derivative security 447K shares
Sell / Disposition
422K Shares
From 13 Insiders
Payment of exercise price or tax liability 412K shares
Open market or private sale 9.19K shares
Bona fide gift 1.54K shares

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