Insider Transactions

Date	Name	Title	Filing	Type	Shares Traded	Price	Total Held
Feb 15, 2012	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	266	--	10,369
Jan 06, 2012	YANCOPOULOS GEORGE Director, EVP, CSO & Pres, REGN Res Labs	Director, EVP, CSO & Pres, REGN Res Labs	Form 4	Other acquisition or disposition	--	--	5,390
Jan 05, 2012	YANCOPOULOS GEORGE Director, EVP, CSO & Pres, REGN Res Labs	Director, EVP, CSO & Pres, REGN Res Labs	Form 4	Open market or private sale of non-derivative or derivative security	27,713	$58.00	833,041
Dec 16, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	1,921	--	1,921
Dec 16, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	150,000	--	244,048
Dec 16, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	158,079	--	158,079
Dec 15, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Other acquisition or disposition	--	--	5,390
Dec 14, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3	38,516	$51.18	860,754
Dec 02, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Other acquisition or disposition	--	--	5,390
Dec 01, 2011	YANCOPOULOS GEORGE Director, EVP CSO President Regeneron Re	Director, EVP CSO President Regeneron Re	Form 4	Open market or private sale of non-derivative or derivative security	3,300	$58.86	923,683

* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.