JOSEPH LAROSA - 20 Nov 2025 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)

Role
EVP General Counsel and Secret
Signature
/s/ Joseph LaRosa
Issuer symbol
REGN
Transactions as of
20 Nov 2025
Transactions value $
-$1,317,233
Form type
4
Filing time
24 Nov 2025, 16:07:16 UTC
Previous filing
18 Dec 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
LAROSA JOSEPH J EVP General Counsel and Secret 777 OLD SAW MILL RIVER ROAD, TARRYTOWN /s/ Joseph LaRosa 24 Nov 2025 0001238303

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction REGN Common Stock Options Exercise $8.03M +14.5K +68.56% $555.67 35.5K 20 Nov 2025 Direct
transaction REGN Common Stock Tax liability -$9.35M -12.7K -35.71% $736.77 22.8K 20 Nov 2025 Direct
holding REGN Common Stock 9K 20 Nov 2025 By 2024 GRAT
holding REGN Common Stock 9K 20 Nov 2025 By 2025 GRAT
holding REGN Common Stock 395 20 Nov 2025 By 401(k) Plan

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) Options Exercise $0 -14.5K -100% $0.00 0 20 Nov 2025 Common Stock 14.5K $555.67 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The stock option award vested in four equal annual installments, commencing one year after the date of grant.