REGENERON PHARMACEUTICALS, INC. - Director's Dealing 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REGENERON PHARMACEUTICALS INC (REGN)
CIK: 0000872589
Period of Report: 2012-01-10

Reporting Person: GOLDSTEIN JOSEPH L (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-01-10	Common Stock	M	5000	$23.84	Acquired	15000	Direct
2012-01-10	Common Stock	S	5000	$74.35	Disposed	10000	Direct
2012-01-10	Common Stock	M	5000	$19.69	Acquired	15000	Direct
2012-01-10	Common Stock	S	5000	$74.35	Disposed	10000	Direct
2012-01-10	Common Stock	M	10000	$19.69	Acquired	20000	Direct
2012-01-10	Common Stock	S	10000	$75	Disposed	10000	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-01-10	Non-Qualified Stock Option (right to buy)	$19.69	M	5000	Disposed	2017-01-03	Common Stock (5000)	Direct
2012-01-10	Non-Qualified Stock Option (right to buy)	$19.69	M	10000	Disposed	2017-01-03	Common Stock (10000)	Direct
2012-01-10	Non-Qualified Stock Option (right to buy)	$23.84	M	5000	Disposed	2018-01-02	Common Stock (5000)	Direct

F1: Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).

F2: The stock option becomes exercisable in three equal annual installments, commencing one year after the date of grant

F3: Exercisable date, exercise date, exercise price, purchase price, sales price, and/or expiration date is/are not applicable in this case.