Insider Transactions | Regeneron Investors

Date	Name	Title	Filing	Type	Shares Traded	Price	Total Held
Jan 09, 2004	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	50	$15.33	63,478
Dec 15, 2003	YANCOPOULOS GEORGE Director, EVP, CSO, & Pres Regn Res Labs	Director, EVP, CSO, & Pres Regn Res Labs	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	10,277	--	64,817
Dec 15, 2003	YANCOPOULOS GEORGE Director, EVP, CSO, & Pres Regn Res Labs	Director, EVP, CSO, & Pres Regn Res Labs	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	7,692	--	7,692
Dec 15, 2003	YANCOPOULOS GEORGE Director, EVP, CSO, & Pres Regn Res Labs	Director, EVP, CSO, & Pres Regn Res Labs	Form 4	Grant, award or other acquisition pursuant to Rule 16b-3(d)	192,308	--	192,308
Sep 18, 2003	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	10,900	$20.69	69,851
Sep 18, 2003	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	100	$20.71	69,751
Sep 18, 2003	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	300	$20.74	69,451
Sep 18, 2003	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	2,500	$20.75	66,951
Sep 18, 2003	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	1,800	$20.76	65,151
Sep 18, 2003	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	200	$20.77	64,951

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