Summary of MATTSON TECHNOLOGY INC

Item 2.06. Material Impairment.

On January 20, 2009 the Mattson Technology, Inc. (the "Company") issued a press release announcing material impairments to goodwill, intangibles and fixed assets. The full text of the Company's press release is attached hereto as Exhibit 99.1

As part of the Company's preparation of its financial statements for the year ended December 31, 2008, the Company has concluded its annual evaluation of the value of its goodwill, long-lived and intangible assets for potential impairment, as required under Statement of Financial Accounting Standards (SFAS) No. 142, "Goodwill and Other Intangible Assets" and SFAS No. 144, "Accounting for the Impairment of Long-Lived Assets." Based on the results of that evaluation, the Company expects that it will incur material non-cash impairment charges related to its goodwill, intangible assets and fixed assets in the fourth quarter of fiscal 2008. Specifically, the Company expects that it will take a non-cash impairment charge of approximately $18 million against goodwill, $7 million against intangibles and $3 million against fixed assets. The goodwill and intangible assets were derived from previous acquisitions. During the fourth quarter, there was a decline in the revenue forecasts for the wafer fabrication industry, with a corresponding reduction in the Company's market capitalization and revenue projections. These were some of the factors that triggered the impairment of goodwill and intangible assets. Changing technology and market conditions have delayed customer investments in advanced technology nodes resulting in the impairment of fixed assets used in the Company's research and development facility.