MATTSON TECHNOLOGY TO PRESENT AT UPCOMING CONFERENCES

FREMONT, Calif. - November 6, 2006 - Mattson Technology, Inc. (NASDAQ: MTSN), a leading supplier of advanced process equipment used to manufacture semiconductors, today announced that the company will be presenting at the following conferences:

• JPMorgan Small/Mid CapConference, Four Seasons Hotel, Boston, MA
  Ludger Viefhues and Bill Turner will be presenting on November 13, 2006 at 11:00 a.m. Eastern Time.
• Bear Stearns' SMid-Cap Investor Conference, Grand Hyatt New York Hotel, New York City, NY
  Ludger Viefhues and Bill Turner will be presenting on November 14, 2006 at 8:30 a.m. Eastern Time.
• UBS Technology Conference, Grand Hyatt New York Hotel, New York City, NY
  Ludger Viefhues will be presenting on November 15, 2006 at 2:30 p.m. Eastern Time.

The presentations will be webcast live via the Internet, accessible on Mattson's corporate website at www.mattson.com. In addition to the live webcast, a replay will be available to the public on the Mattson website for one week following the live broadcast.

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.