REGENERON PHARMACEUTICALS, INC. — Director's Dealing 2012

Aug 24, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REGENERON PHARMACEUTICALS INC (REGN)
CIK: 0000872589
Period of Report: 2012-08-22

Reporting Person: SING GEORGE L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-08-22	Common Stock	M	5000.0	$18.8	Acquired	142772.0	Direct
2012-08-22	Common Stock	S	5000.0	$139.0	Disposed	137772.0	Direct
2012-08-23	Common Stock	M	5000.0	$18.8	Acquired	142772.0	Direct
2012-08-23	Common Stock	S	5000.0	$142.0	Disposed	137772.0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-08-22	Non-Qualified Stock Option (right to buy)	$18.8	M	5000.0	Disposed	2013-01-02	Common Stock (5000.0)	Direct
2012-08-23	Non-Qualified Stock Option (right to buy)	$18.8	M	5000.0	Disposed	2013-01-02	Common Stock (5000.0)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5000.0	Indirect

Footnotes

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