<SEC-DOCUMENT>0001104659-15-029060-index.html : 20150421
<SEC-HEADER>0001104659-15-029060.hdr.sgml : 20150421
<ACCEPTANCE-DATETIME>20150421163335
ACCESSION NUMBER:		0001104659-15-029060
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20150421
DATE AS OF CHANGE:		20150421
EFFECTIVENESS DATE:		20150421

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			REGENERON PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0000872589
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				133444607
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19034
		FILM NUMBER:		15783562

	BUSINESS ADDRESS:	
		STREET 1:		777 OLD SAW MILL RIVER ROAD
		CITY:			TARRYTOWN
		STATE:			NY
		ZIP:			10591
		BUSINESS PHONE:		9143477000

	MAIL ADDRESS:	
		STREET 1:		777 OLD SAW MILL RIVER ROAD
		CITY:			TARRYTOWN
		STATE:			NY
		ZIP:			10591
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a15-2653_4defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a15-2653_4defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g26534bci001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g26534bci001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g26534bci002.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g26534bci002.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g26534bci003.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g26534bci003.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g26534bci004.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g26534bci004.gif

</DOCUMENT>
</SEC-DOCUMENT>