Joseph J. Larosa - 02 Jul 2021 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: 02 Jul 2021
Net transactions value: -$4,023,224
Form type: 4
Filing time: 07 Jul 2021, 16:01:47 UTC
Next filing: 24 Aug 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	Options Exercise	$1,791,300	+10,000	+76%	$179.13	23,182	02 Jul 2021	Direct	F1
transaction	REGN	Common Stock	Tax liability	$3,843,684	-6,602	-28%	$582.20	16,580	02 Jul 2021	Direct	F1
transaction	REGN	Common Stock	Sale	$1,970,840	-3,398	-20%	$580.00	13,182	06 Jul 2021	Direct	F1
holding	REGN	Common Stock						3,186	02 Jul 2021	2021 GRAT
holding	REGN	Common Stock						314	02 Jul 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	-10,000	-20%	$0.000000	40,000	02 Jul 2021	Common Stock	10,000	$179.13	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.