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: 2012-02-14

Reporting Person: GILMAN ALFRED G (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-14	Common Stock	M	15000	$15.01	Acquired	15000	Direct
2012-02-14	Common Stock	F	2028	$111.01	Disposed	12972	Direct
2012-02-14	Common Stock	M	15000	$9.17	Acquired	27972	Direct
2012-02-14	Common Stock	F	1238	$111.01	Disposed	26734	Direct
2012-02-15	Common Stock	S	26734	$109.56	Disposed	0	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-14	Non-Qualified Stock Option (right to buy)	$9.17	M	15000	Disposed	2015-01-03	Common Stock (15000)	Direct
2012-02-14	Non-Qualified Stock Option (right to buy)	$15.01	M	15000	Disposed	2014-01-02	Common Stock (15000)	Direct

F1: The stock option becomes exercisable in three equal annual installments, commencing one year after the date of grant

F2: Exercisable date, exercise date, exercise price, purchase price, sales price, and/or expiration date is/are not applicable in this case.