MTSN Mattson Technology, Inc.

Mattson Technology, Inc. (NASDAQ: MTSN), a leading supplier of advanced process equipment used to manufacture semiconductors, today announced that a leading semiconductor foundry based in Asia has placed multiple orders for the Company's Suprema® photoresist strip system. The Company noted that the orders come from multiple production fabs from its long standing customer, and the systems would be used for all photoresist strip processes on both front-end-of-line (FEOL) and back-end-of-line (BEOL) applications. The tool shipments will start in the current quarter and continue into 2011.

Sr. Vice President and General Manager of Mattson Technology's Plasma Products Group, Randy Matsuda, noted, "We are extremely pleased that our customer has expressed further confidence in Mattson Technology for their strip solutions. The orders represent all dry strip requirements as our customer ramps production to meet their increasing chip demand. We look forward to working closely with the customer and to fully meeting their technology and production requirements." Matsuda added, "The selection clearly demonstrates Suprema's advantages in high productivity, reliability and its enabling process capability. As our customers around the globe look to increase their production capacity, we stand ready to provide world-class capability and support as the leading supplier of dry strip systems."

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, and operate in three primary product sectors: Dry Strip, Rapid Thermal Processing and Etch. 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.

"Safe Harbor" Statement Under the Private Securities Litigation Reform Act of 1995: This news release contains forward-looking statements. Forward-looking statements address matters that are subject to a number of risks and uncertainties that can cause actual results to differ materially. Such risks and uncertainties include, but are not limited to: end-user demand for semiconductors; customer demand for semiconductor manufacturing equipment; the timing of significant customer orders for the Company's products; customer acceptance of delivered products and the Company's ability to collect amounts due upon shipment and upon acceptance; the Company's ability to timely manufacture, deliver and support ordered products; the Company's ability to bring new products to market and to gain market share with such products; customer rate of adoption of new technologies; risks inherent in the development of complex technology; the timing and competitiveness of new product releases by the Company's competitors; the Company's ability to align its cost structure with market conditions; and other risks and uncertainties described in the Company's Forms 10-K, 10-Q and other filings with the Securities and Exchange Commission. The Company assumes no obligation to update the information provided in this news release.

Mattson Technology Contact Jay Chun Mattson Technology, Inc. tel (510) 492-6190 fax (510) 492-5914 Jay.Chun@mattson.com Investor & Media Contact Laura Guerrant-Oiye Guerrant Associates tel 808-882-1467 lguerrant@guerrantir.com