<SEC-DOCUMENT>0001111928-16-000196-index.html : 20160427
<SEC-HEADER>0001111928-16-000196.hdr.sgml : 20160427
<ACCEPTANCE-DATETIME>20160427170943
ACCESSION NUMBER:		0001111928-16-000196
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20160425
FILED AS OF DATE:		20160427
DATE AS OF CHANGE:		20160427

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IPG PHOTONICS CORP
		CENTRAL INDEX KEY:			0001111928
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				043444218
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		50 OLD WEBSTER ROAD
		CITY:			OXFORD
		STATE:			MA
		ZIP:			01540
		BUSINESS PHONE:		5083731100

	MAIL ADDRESS:	
		STREET 1:		50 OLD WEBSTER ROAD
		CITY:			OXFORD
		STATE:			MA
		ZIP:			01540

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Valentin Gapontsev Trust I
		CENTRAL INDEX KEY:			0001508155
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33155
		FILM NUMBER:		161596223

	BUSINESS ADDRESS:	
		STREET 1:		50 OLD WEBSTER ROAD
		CITY:			OXFORD
		STATE:			MA
		ZIP:			01540
		BUSINESS PHONE:		5083731123

	MAIL ADDRESS:	
		STREET 1:		50 OLD WEBSTER ROAD
		CITY:			OXFORD
		STATE:			MA
		ZIP:			01540
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_146179135681639.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: wf-form4_146179135681639.html

Document 1 - RAW XML: wf-form4_146179135681639.xml

</DOCUMENT>
</SEC-DOCUMENT>