Mattson Technology Announces Availability of 2010 Fourth Quarter and Year End Financial Results and Webcast

FREMONT, CA, Jan 26 (MARKET WIRE) --
Mattson Technology, Inc. (NASDAQ: MTSN), a leading supplier of advanced
process equipment used to manufacture semiconductors, announced that the
company will host a conference call on Wednesday, February 2, 2011 at
5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). The conference call will
cover 2010 fourth quarter and year-end financial results and current
business conditions.

Mattson will also webcast a slide presentation in conjunction with the
conference call. To access the live web cast and slide presentation,
please visit Mattson's website www.mattson.com under the 'Investors'
section.

To access the live conference call, please dial (970) 315-0417.

A digital replay of the conference call will be available on Mattson's
website for one week following the live broadcast.

About Mattson Technology, Inc.

Mattson Technology, Inc. designs, manufactures and markets semiconductor
wafer processing equipment used in the fabrication of integrated
circuits. We are a leading supplier of plasma and rapid thermal
processing equipment to the global semiconductor industry. Through
manufacturing and design innovation, we have produced technologically
advanced systems that provide productive and cost effective solutions for
customers fabricating current- and next-generation semiconductor devices.
For more information, please contact Mattson Technology, Inc., 47131
Bayside Parkway, Fremont, CA, 94538. Telephone: (800) MATTSON/(510)
657-5900. Internet: www.mattson.com

Mattson Technology Contact
Andy Moring
tel +1-(510) 492-6241
fax +1-(510) 492-5963
Andy.Moring@mattson.com

Investor & Media Contact
Laura Guerrant-Oiye
Guerrant Associates
tel 808-882-1467
lguerrant@guerrantir.com

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