<SEC-DOCUMENT>0001104659-18-049951-index.html : 20180806
<SEC-HEADER>0001104659-18-049951.hdr.sgml : 20180806
<ACCEPTANCE-DATETIME>20180806212904
ACCESSION NUMBER:		0001104659-18-049951
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180802
FILED AS OF DATE:		20180806
DATE AS OF CHANGE:		20180806

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Advisor HoldCo, LLC
		CENTRAL INDEX KEY:			0001705515
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996120

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212-231-0095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Advisor HoldCo III, LLC
		CENTRAL INDEX KEY:			0001705440
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996121

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122310095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Capital Group, LLC
		CENTRAL INDEX KEY:			0001705438
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996122

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122310095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Capital Group III, L.P.
		CENTRAL INDEX KEY:			0001705439
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996123

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122310095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris GP HoldCo III, LLC
		CENTRAL INDEX KEY:			0001705465
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996124

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122310095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Partners GP III, L.P.
		CENTRAL INDEX KEY:			0001705701
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996125

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122310095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Partners III Parallel, L.P.
		CENTRAL INDEX KEY:			0001626560
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1214

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996126

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVE., 59TH FL.
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212-231-0095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVE., 59TH FL.
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Siris Partners III, L.P.
		CENTRAL INDEX KEY:			0001626559
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1214

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996127

	BUSINESS ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVE., 59TH FL.
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212-231-0095

	MAIL ADDRESS:	
		STREET 1:		C/O SIRIS CAPITAL GROUP
		STREET 2:		601 LEXINGTON AVE., 59TH FL.
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Triangle Private Investments, LLC
		CENTRAL INDEX KEY:			0001685464
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996128

	BUSINESS ADDRESS:	
		STREET 1:		601 LEXINGTON AVENUE, 59TH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212-231-0095

	MAIL ADDRESS:	
		STREET 1:		601 LEXINGTON AVENUE, 59TH STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Triangle Private Holdings I, LLC
		CENTRAL INDEX KEY:			0001737027
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12696
		FILM NUMBER:		18996129

	BUSINESS ADDRESS:	
		STREET 1:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122310095

	MAIL ADDRESS:	
		STREET 1:		601 LEXINGTON AVENUE, 59TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLANTRONICS INC /CA/
		CENTRAL INDEX KEY:			0000914025
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				770207692
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0330

	BUSINESS ADDRESS:	
		STREET 1:		345 ENCINAL ST
		CITY:			SANTA CRUZ
		STATE:			CA
		ZIP:			95061-1802
		BUSINESS PHONE:		8314587828

	MAIL ADDRESS:	
		STREET 1:		345 ENCINAL STREET
		STREET 2:		PO BOX 1802
		CITY:			SANTA CRUZ
		STATE:			CA
		ZIP:			95061-1802

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PI PARENT CORP
		DATE OF NAME CHANGE:	19931025
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
Document 1 - file: a4.html

Document 1 - RAW XML: a4.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex-99d1.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: ex-99d1.htm

</DOCUMENT>
</SEC-DOCUMENT>