George L. Sing - 30 Dec 2025 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)

Role
Director
Signature
/s/ George L. Sing
Issuer symbol
REGN
Transactions as of
30 Dec 2025
Net transactions value
+$634
Form type
4
Filing time
31 Dec 2025, 17:05:40 UTC
Previous filing
03 Jan 2025
Next filing
06 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
SING GEORGE L Director 777 OLD SAW MILL RIVER ROAD, TARRYTOWN /s/ George L. Sing 31 Dec 2025 0001225471

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction REGN Common Stock Options Exercise $4,790,332 +9,212 +33% $520.01 37,040 30 Dec 2025 Direct
transaction REGN Common Stock Tax liability $4,789,698 -6,188 -17% $774.03 30,852 30 Dec 2025 Direct
holding REGN Common Stock 750 30 Dec 2025 by Spouse
holding REGN Common Stock 400 30 Dec 2025 by Spouse/Cust Son
holding REGN Common Stock 1,000 30 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) Options Exercise $0 -9,212 -100% $0.000000 0 30 Dec 2025 Common Stock 9,212 $520.01 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 vested in three equal annual installments, commencing one year after the date of grant.