<SEC-DOCUMENT>0000892712-15-000547-index.html : 20150507
<SEC-HEADER>0000892712-15-000547.hdr.sgml : 20150507
<ACCEPTANCE-DATETIME>20150507073318
ACCESSION NUMBER:		0000892712-15-000547
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150507
DATE AS OF CHANGE:		20150507

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACK BOX CORP
		CENTRAL INDEX KEY:			0000849547
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				953086563
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-42953
		FILM NUMBER:		15839393

	BUSINESS ADDRESS:	
		STREET 1:		1000 PARK DRIVE
		CITY:			LAWRENCE
		STATE:			PA
		ZIP:			15055
		BUSINESS PHONE:		724-746-5500

	MAIL ADDRESS:	
		STREET 1:		1000 PARK DRIVE
		CITY:			LAWRENCE
		STATE:			PA
		ZIP:			15055

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MB HOLDINGS INC
		DATE OF NAME CHANGE:	19921113

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BLACK BOX INCORPORATED
		DATE OF NAME CHANGE:	19910825

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HEARTLAND ADVISORS INC
		CENTRAL INDEX KEY:			0000937394
		IRS NUMBER:				391078128
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		789 N WATER STREET
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		414-347-7777

	MAIL ADDRESS:	
		STREET 1:		789 N WATER STREET
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>heartlandblackbox13ga.htm
<DESCRIPTION>AMENDMENY NO. 4 TO SCHEDULE 13G
<TEXT>
Document 1 - file: heartlandblackbox13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>