REGENERON PHARMACEUTICALS, INC. — Director's Dealing 2011

Jul 18, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REGENERON PHARMACEUTICALS INC (REGN)
CIK: 0000872589
Period of Report: 2011-07-14

Reporting Person: VAGELOS P ROY (Director, Chairman of the Board)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-07-14	Common Stock	S	374	$56.43	Disposed	160284	Indirect
2011-07-14	Common Stock	S	284	$57.07	Disposed	160000	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	140087	Direct
Common Stock	2271	Indirect
Common Stock	175056	Indirect
Common Stock	94222	Indirect
Common Stock	1203	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 374 shares of Company stock on July 14, 2011 at prices ranging from $56.30 to $56.68. 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 trust on July 14, 2011 at each separate price.

F3: By an irrevocable trust for the benefit of grandchildren of the reporting person, of which the spouse of the reporting person is trustee.

F4: By a trust for the benefit of certain grandchildren of the reporting person, of which the reporting person and/or the spouse of the reporting person is trustee.