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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
872589	Regeneron Pharmaceuticals Inc	REGN	Pharmaceutical Preparations (2834)	133444607

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1013064	Roy P Vagelos	777 Old Saw Mill River Road Tarrytown NY 10591	Chairman Of The Board	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2011-07-14	374	$56.43	160,284	No	4	S	Indirect	by Spouse as Trustee
Common Stock	Disposition	2011-07-14	284	$57.07	160,000	No	4	S	Indirect	by Spouse as Trustee

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	by Spouse as Trustee
No	4	S	Indirect	by Spouse as Trustee

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	140,087	Direct
Common Stock	2,271	Indirect	By 401(k) Plan
Common Stock	175,056	Indirect	by CLAT
Common Stock	94,222	Indirect	by GRAT
Common Stock	1,203	Indirect	by trust for grandch

Footnotes

Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c).
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.
By an irrevocable trust for the benefit of grandchildren of the reporting person, of which the spouse of the reporting person is trustee.
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.