<SEC-DOCUMENT>0001628280-15-003698-index.html : 20150505
<SEC-HEADER>0001628280-15-003698.hdr.sgml : 20150505
<ACCEPTANCE-DATETIME>20150505170021
ACCESSION NUMBER:		0001628280-15-003698
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20150505
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Material Modifications to Rights of Security Holders
ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20150505
DATE AS OF CHANGE:		20150505

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MATTSON TECHNOLOGY INC
		CENTRAL INDEX KEY:			0000928421
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				770208119
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24838
		FILM NUMBER:		15833835

	BUSINESS ADDRESS:	
		STREET 1:		47131 BAYSIDE PARKWAY
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94538
		BUSINESS PHONE:		510 657 5900

	MAIL ADDRESS:	
		STREET 1:		47131 BAYSIDE PARKWAY
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94538
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>mtsn8k-may52015.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: mtsn8k-may52015.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-3.1
<SEQUENCE>2
<FILENAME>ex31-mattsonxcertificateof.htm
<DESCRIPTION>EXHIBIT 3.1
<TEXT>
Document 2 - file: ex31-mattsonxcertificateof.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>3
<FILENAME>ex41-mattsonxrightsagreeme.htm
<DESCRIPTION>EXHIBIT 4.1
<TEXT>
Document 3 - file: ex41-mattsonxrightsagreeme.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>prlogoa03a01a02a04a02a01.jpg
<TEXT>
Document 4 - file: prlogoa03a01a02a04a02a01.jpg

</DOCUMENT>
</SEC-DOCUMENT>