GOVERNMENT

Cray will host an investor conference call on Thursday, August 5 at 1:30 p.m. PDT (4:30 p.m. EDT) to discuss 2010 second quarter financial results. The call will feature a discussion by senior management followed by a question and answer session.

Conference Call Information: To access the call, please dial into the conference at least 10 minutes prior to the beginning of the call at 1-800-762-9441. International callers should dial 1-480-629-9675. To listen to the audio webcast, go to the Investors section of the Cray website at http://investors.cray.com.

Date: August 5, 2010

Time: 1:30 PM PT

Listen via Internet: http://www.cray.com/Home.aspx/

Telephone: 1-800-762-9441

Replay Information: If you are unable to attend the live conference call, an audio webcast replay will be available in the Investors section of the Cray website for 180 days. If you do not have Internet access, a replay of the call will be available by dialing 1-800-406-7325, international callers dial 1-303-590-3030, and entering the access code 4340268. The conference call replay will be available for 72 hours, beginning at 4:30 p.m. PDT on Thursday, August 5, 2010.