Mercury Computer Systems to Report First Quarter Fiscal 2012 Earnings and Host Conference Call on October 25, 2011

Mercury Computer Systems, Inc. (NASDAQ: MRCY), a trusted provider of commercially developed ISR subsystems, will release its financial results for the first quarter of fiscal year 2012 ended September 30, 2011, on Tuesday, October 25, 2011, after the close of trading on the NASDAQ.

Management will host a conference call at 5:00 p.m. ET to discuss Mercury’s financial results, business highlights, and outlook. In addition, Company representatives may answer questions concerning business and financial developments and trends, the Company’s view on earnings forecasts, and other business and financial matters affecting the Company, the responses to which may contain information that has not been previously disclosed.

To listen to the conference call, dial 888-778-8912 in the USA and Canada, and 913-312-1446 for all other countries. The conference code number is 2754197. Please call five to ten minutes prior to the scheduled start time. This call will also be broadcast live over the web at www.mc.com/investor under Financial Events.

A replay of the call by telephone will be available from approximately 9:00 p.m. ET on Tuesday, October 25 through 9:00 p.m. ET on Sunday, November 6, 2011. To access the replay, dial 888-203-1112 in the USA and Canada, and 719-457-0820 for all other countries. Enter access code 2754197. A replay of the webcast of the call will be available for an extended period of time on the Financial Events page of the Company’s website at www.mc.com/investor.

Mercury Computer Systems, Inc. – Where Challenges Drive Innovation^®

Mercury Computer Systems (www.mc.com, NASDAQ: MRCY) is a best of breed provider of open, commercially developed, application-ready, multi-INT subsystems for the ISR market. With over 30 years of experience in embedded computing, superior domain expertise in radar, EW, EO/IR, C4I, and sonar applications, and more than 300 successful program deployments including Aegis, Global Hawk, and Predator, Mercury’s Services and Systems Integration team leads the industry in partnering with customers to design and integrate system-level solutions that minimize program risk, maximize application portability, and accelerate customers’ time to market.

Mercury is based in Chelmsford, Massachusetts, and serves customers worldwide through a broad network of direct sales offices, subsidiaries, and distributors.

Challenges Drive Innovation is a registered trademark of Mercury Computer Systems, Inc. Other product and company names mentioned may be trademarks and/or registered trademarks of their respective holders.