MTSN Mattson Technology, Inc.

Mattson Technology, Inc. (NASDAQ: MTSN), a leading supplier of advanced process equipment used to manufacture semiconductors, announced today that Andy Moring, Chief Financial Officer, will provide a company overview at the 11th Annual Needham Growth Stock Conference on Tuesday, January 6, 2009 at the New York Palace Hotel in New York. A live webcast of the presentation will take place at 10:30 a.m. Eastern Standard Time.

The presentation can be accessed through live and archived webcasts at www.mattson.com under the "Investors" section. The webcast will be archived for a period of thirty days following the conclusion of the live event.

About Mattson Technology, Inc.

Mattson Technology, Inc. is the leading supplier of dry strip equipment and the second largest supplier of rapid thermal processing equipment in the global semiconductor industry. The Company's strip and RTP equipment utilize innovative technology to deliver advanced processing performance and productivity gains to semiconductor manufacturers worldwide for the fabrication of current- and next-generation devices. For more information, please contact Mattson Technology, Inc., 47131 Bayside Parkway, Fremont, Calif. 94538. Telephone: (800) MATTSON/(510) 657-5900. Fax: (510) 492-5911. Internet: www.mattson.com.

Mattson Technology Contact Andy Moring Mattson Technology, Inc. tel 510-492-6241 fax 510-492-5963 andy.moring@mattson.com Investor & Media Contact Laura Guerrant-Oiye Guerrant Associates tel 808-882-1467 fax 808-882-1267 lguerrant@guerrantir.com