Neil E. Stahl - 03 Dec 2021 Form 4 Insider Report for REGENERON PHARMACEUTICALS, INC. (REGN)

Role: EVP Research and Development
Signature: /s/**Neil Stahl
Issuer symbol: REGN
Transactions as of: 03 Dec 2021
Net transactions value: -$18,858,197
Form type: 4
Filing time: 06 Dec 2021, 15:10:07 UTC
Previous filing: 18 May 2021
Next filing: 10 Dec 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	REGN	Common Stock	Gift	$0	-4,605	-14%	$0.000000	28,809	29 Nov 2021	Direct
transaction	REGN	Common Stock	Options Exercise	$12,986,925	+72,500	+252%	$179.13	101,309	03 Dec 2021	Direct
transaction	REGN	Common Stock	Tax liability	$31,845,122	-50,352	-50%	$632.45	50,957	03 Dec 2021	Direct
transaction	REGN	Common Stock	Gift	$0	+4,605		$0.000000	4,605	29 Nov 2021	by Spouse as Trustee
holding	REGN	Common Stock						5,792	03 Dec 2021	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	-72,500	-100%	$0.000000^*	0	03 Dec 2021	Common Stock	72,500	$179.13	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 vests in four equal annual installments, commencing one year after the date of grant.