<SEC-DOCUMENT>0001111928-18-000082-index.html : 20180529
<SEC-HEADER>0001111928-18-000082.hdr.sgml : 20180529
<ACCEPTANCE-DATETIME>20180529160927
ACCESSION NUMBER:		0001111928-18-000082
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		3
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20171231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20171231
</ITEM>
</RULE>
FILED AS OF DATE:		20180529
DATE AS OF CHANGE:		20180529

FILER:

	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

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33155
		FILM NUMBER:		18864511

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>formsdconflictminerals2018.htm
<DESCRIPTION>2018 FORM SD
<TEXT>
Document 1 - file: formsdconflictminerals2018.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>exhibit1012018conflictmine.htm
<DESCRIPTION>EXHIBIT 1.01 TO 2018 FORM SD
<TEXT>
Document 2 - file: exhibit1012018conflictmine.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>ipglogo1.jpg
<TEXT>
Document 3 - file: ipglogo1.jpg

</DOCUMENT>
</SEC-DOCUMENT>