Marion McCourt - 01 Mar 2023 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)

Role: EVP Commercial
Signature: /s/**Marion McCourt
Issuer symbol: REGN
Transactions as of: 01 Mar 2023
Net transactions value: -$426,173
Form type: 4
Filing time: 03 Mar 2023, 15:03:08 UTC
Previous filing: 14 Feb 2023
Next filing: 05 Apr 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	REGN	Common Stock	Options Exercise	$409,706	+1,100	+5.3%	$372.46	21,903	01 Mar 2023	Direct	F1
transaction	REGN	Common Stock	Sale	$835,879	-1,100	-5%	$759.89	20,803	01 Mar 2023	Direct	F1
holding	REGN	Common Stock						138	01 Mar 2023	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	-1,100	-17%	$0.000000	5,550	01 Mar 2023	Common Stock	1,100	$372.46	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).
F2	The stock option award vests in four equal annual installments, commencing one year after the date of grant.