REGENERON PHARMACEUTICALS, INC. — Director's Dealing 2012

Jan 11, 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: ROBERTS WILLIAM (VP Regulatory Development and)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-01-10	Common Stock	M	4966	$20.32	Acquired	66110	Direct
2012-01-10	Common Stock	S	4966	$74.35	Disposed	61144	Direct
2012-01-10	Common Stock	M	4562	$21.92	Acquired	65706	Direct
2012-01-10	Common Stock	S	4562	$74.35	Disposed	61144	Direct
2012-01-10	Common Stock	M	25438	$21.92	Acquired	86582	Direct
2012-01-10	Common Stock	F	7543	$73.92	Disposed	79039	Direct
2012-01-10	Common Stock	F	6891	$73.92	Disposed	72148	Direct
2012-01-10	Common Stock	M	25034	$20.32	Acquired	97182	Direct
2012-01-10	Common Stock	F	6881	$73.92	Disposed	90301	Direct
2012-01-10	Common Stock	F	7009	$73.92	Disposed	83292	Direct
2012-01-11	Common Stock	S	100	$73.99	Disposed	83192	Direct
2012-01-11	Common Stock	S	3400	$74.39	Disposed	79792	Direct
2012-01-11	Common Stock	S	2885	$75.72	Disposed	76907	Direct
2012-01-11	Common Stock	S	15663	$76.32	Disposed	61244	Direct
2012-01-11	Common Stock	S	100	$77.05	Disposed	61144	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-01-10	Incentive Stock Option (right to buy)	$20.32	M	4966	Disposed	2016-12-18	Common Stock (4966)	Direct
2012-01-10	Incentive Stock Option (right to buy)	$21.92	M	4562	Disposed	2017-12-17	Common Stock (4562)	Direct
2012-01-10	Non-Qualified Stock Option (right to buy)	$20.32	M	25034	Disposed	2016-12-18	Common Stock (25034)	Direct
2012-01-10	Non-Qualified Stock Option (right to buy)	$21.92	M	25438	Disposed	2017-12-17	Common Stock (25438)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1200	Indirect
Common Stock	4187	Indirect
Common Stock	1200	Indirect

Footnotes

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

F2: Represents volume-weighted average price of sales of 3,400 shares of Company stock on January 11, 2012 at prices ranging from $74.05 to $74.96. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on January 11, 2012 at each separate price.

F3: Represents volume-weighted average price of sales of 2,885 shares of Company stock on January 11, 2012 at prices ranging from $75.10 to $75.99. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on January 11, 2012 at each separate price.

F4: Represents volume-weighted average price of sales of 15,663 shares of Company stock on January 11, 2012 at prices ranging from $76.00 to $76.99. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on January 11, 2012 at each separate price.

F5: The stock option award (combined incentive stock option and non-qualified stock option) vests in four equal annual installments, commencing one year after the date of grant.

F6: Exercisable date, exercise date, exercise price, purchase price, sales price, and/or expiration date is/are not applicable in this case.