<SEC-DOCUMENT>0001104659-16-144225-index.html : 20160912
<SEC-HEADER>0001104659-16-144225.hdr.sgml : 20160912
<ACCEPTANCE-DATETIME>20160912162258
ACCESSION NUMBER:		0001104659-16-144225
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20160909
FILED AS OF DATE:		20160912
DATE AS OF CHANGE:		20160912

ISSUER:		

	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

	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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Zoghbi Huda Y
		CENTRAL INDEX KEY:			0001681643

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19034
		FILM NUMBER:		161881183

	MAIL ADDRESS:	
		STREET 1:		REGENERON PHARMACEUTICALS, INC.
		STREET 2:		777 OLD SAW MILL RIVER ROAD
		CITY:			TARRYTOWN
		STATE:			NY
		ZIP:			10591
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>a3.xml
<DESCRIPTION>3
<TEXT>
Document 1 - file: a3.html

Document 1 - RAW XML: a3.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.1
<SEQUENCE>2
<FILENAME>ex-24d1.htm
<DESCRIPTION>EX-24.1
<TEXT>
Document 2 - file: ex-24d1.htm

</DOCUMENT>
</SEC-DOCUMENT>