MoSys Co-Founder and CEO Fu-Chieh Hsu Resigns

SUNNYVALE, Calif.--(BUSINESS WIRE)--Dec. 31, 2004--Monolithic System Technology, Inc. (MoSys), (NASDAQ:MOSY) announced that it's Chairman, President and CEO Dr. Fu-Chieh Hsu has resigned from the company effective December 30, 2004. Dr. Hsu, a co-founder of the company, cited recent health problems as the reason for his resignation from the company.

Carl Berg, a member of the MoSys Board of Directors and an original investor in MoSys stated, "We are all very saddened by the departure of one of the company's founders and one of Silicon Valley's leading technologists. We recognize Fu-Chieh's significant contributions and personal sacrifices in building the company."

Mr. Berg added, "2004 has certainly been a challenging year for everyone at MoSys. We all wish Fu-Chieh a quick recovery and return to good health."

MoSys' CFO, Mark Voll will assume responsibility for operations at the company and report directly to the Board during the time the Board conducts a search for a new CEO.