REGENERON PHARMACEUTICALS, INC. — Director's Dealing 2013

Sep 11, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: REGENERON PHARMACEUTICALS INC (REGN)
CIK: 0000872589
Period of Report: 2013-09-09

Reporting Person: SCHLEIFER LEONARD S (Director, CEO & President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-09-09	Common Stock	C	5000	$0.00	Acquired	5000	Indirect
2013-09-09	Common Stock	S	3600	$275.04	Disposed	1400	Indirect
2013-09-09	Common Stock	S	1200	$276.47	Disposed	200	Indirect
2013-09-09	Common Stock	S	200	$277.12	Disposed	0	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-09-09	Class A Stock	$0.00	C	5000	Disposed		Common Stock (5000)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5618	Indirect
Common Stock	42087	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class A Stock	$0.00		Common Stock (1710790)	1710790	Direct

Footnotes

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

F2: Class A Stock of Regeneron Pharmaceuticals, Inc. ("Regeneron") converts to Common Stock of Regeneron on a one-to-one basis upon certain events or upon election of the shareholder.

F3: These shares of Class A Stock are presently convertible and such conversion feature does not expire.

F4: Represents volume-weighted average price of sales of 3,600 shares fo Company stock on September 9, 2013 at prices ranging from $275.00 to $275.63. 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 September 9, 2013 at each separate price.

F5: Represents volume-weighted average price of sales of 1,200 shares fo Company stock on September 9, 2013 at prices ranging from $276.14 to $276.80. 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 September 9, 2013 at each separate price.

F6: Represents volume-weighted average price of sales of 200 shares fo Company stock on September 9, 2013 at prices ranging from $277.00 to $277.24. 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 September 9, 2013 at each separate price.