Christopher R. Fenimore - 05 Dec 2025 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)

Role
EVP Finance CFO
Signature
/s/ Christopher R. Fenimore
Issuer symbol
REGN
Transactions as of
05 Dec 2025
Net transactions value
-$707,236
Form type
4
Filing time
09 Dec 2025, 16:08:22 UTC
Previous filing
18 Dec 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Fenimore Christopher R. EVP Finance CFO 777 OLD SAW MILL RIVER ROAD, TARRYTOWN /s/ Christopher R. Fenimore 09 Dec 2025 0001697422

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction REGN Common Stock Award $0 +3,027 +19% $0.000000 19,292 05 Dec 2025 Direct F1
transaction REGN Common Stock Tax liability $707,236 -992 -5.1% $712.94 18,300 08 Dec 2025 Direct
holding REGN Common Stock 1,548 05 Dec 2025 By 401(k) Plan
holding REGN Common Stock 1,897 05 Dec 2025 By Trust F2
holding REGN Common Stock 25 05 Dec 2025 by Trust for Daugh
holding REGN Common Stock 25 05 Dec 2025 by Trust for Son

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction REGN Non-Qualified Stock Option (right to buy) Award $0 +14,924 $0.000000 14,924 05 Dec 2025 Common Stock 14,924 $726.71 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Award of Restricted Stock under the Second Amended and Restated 2014 Long-Term Incentive Plan that vests 50% on December 5, 2027 and 50% on December 5, 2029.
F2 These shares are held in a trust for the benefit of the reporting person's spouse. The reporting person and the reporting person's spouse are trustees of the trust.
F3 The stock option award vests in four equal annual installments, commencing one year after the date of grant.