<SEC-DOCUMENT>0001104659-15-057220-index.html : 20150806
<SEC-HEADER>0001104659-15-057220.hdr.sgml : 20150806
<ACCEPTANCE-DATETIME>20150806165822
ACCESSION NUMBER:		0001104659-15-057220
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150806
DATE AS OF CHANGE:		20150806

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			REX ENERGY CORP
		CENTRAL INDEX KEY:			0001397516
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				208814402
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-83035
		FILM NUMBER:		151033924

	BUSINESS ADDRESS:	
		STREET 1:		366 WALKER DRIVE
		CITY:			STATE COLLEGE
		STATE:			PA
		ZIP:			16801
		BUSINESS PHONE:		814-278-7267

	MAIL ADDRESS:	
		STREET 1:		366 WALKER DRIVE
		CITY:			STATE COLLEGE
		STATE:			PA
		ZIP:			16801

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PRIMECAP MANAGEMENT CO/CA/
		CENTRAL INDEX KEY:			0000763212
		IRS NUMBER:				953868081

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		225 SOUTH LAKE AVE STE 400
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101-3005
		BUSINESS PHONE:		8183049222

	MAIL ADDRESS:	
		STREET 1:		225 SOUTH LAKE AVE SUITE 400
		CITY:			PASADENA
		STATE:			CA
		ZIP:			91101
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>a15-17115_2sc13g.htm
<DESCRIPTION>SC 13G
<TEXT>
Document 1 - file: a15-17115_2sc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>