Item 8.01 Other Events.

At a special meeting of shareholders held on May 8, 2009, the shareholders of Mercury Computer Systems, Inc. (the "Company") approved a proposed stock option exchange program described in the Company's Definitive Proxy Statement dated April 13, 2009, filed with the Securities and Exchange Commission on April 13, 2009, under the caption "Proposal to Approve a Stock Option Exchange Program."

The Company has not commenced the stock option exchange program referred to in this report. The Company will provide eligible employees with written materials explaining the full terms and conditions of the program, and will also file these materials with the Securities and Exchange Commission. WHEN THESE MATERIALS BECOME AVAILABLE, EMPLOYEES ELIGIBLE FOR THE EXCHANGE PROGRAM SHOULD READ THEM CAREFULLY, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE EXCHANGE PROGRAM.

Once the materials are filed with the Securities and Exchange Commission, they will be available free of charge at www.sec.gov and by contacting the Company's Investor Relations department at 201 Riverneck Road, Chelmsford, Massachusetts 01824, telephone 978-256-1300.

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