MoSys Appoints Didier Lacroix Vice President of Worldwide Sales

Lacroix to Lead Company's Continued Expansion in New Markets

SUNNYVALE, Calif. -- Feb. 25, 2008 -- MoSys, Inc., (Nasdaq: MOSY), a leading provider of high-density system-on-chip (SoC) memory and analog/mixed-signal intellectual property (IP), today announced the appointment of Didier Lacroix as its Vice President of Worldwide Sales. Mr. Lacroix brings over 20 years of experience to MoSys spanning a broad range of high technology market segments, including consumer electronics, micro-electro-mechanical systems, electronic design automation, and semiconductor intellectual property. He will oversee the MoSys worldwide sales organization.

"Didier is a seasoned sales executive with applicable experience in the semiconductor IP industry," stated Len Perham, President and CEO of MoSys. "We are delighted to have Didier join our leadership team and believe he will be instrumental in our success as we drive the future growth of our business."

Prior to MoSys, Mr. Lacroix was vice president of worldwide sales of Chipidea, a company acquired by MIPS. Previously, he was co-founder of NanoZilla of Los Gatos, a management consulting firm devoted to the adoption of electronic miniaturization technologies. Earlier, he was CEO of Discera, and vice-president and general manager of MEMSCAP's wireless business. He also held management positions at Synopsys and Cadence Designs Systems.

Mr. Lacroix holds a master of science degree in electrical engineering from California Institute of Technology (Caltech), and a Diplome d'Ingenieur from ESIEE (Ecole Superieure d'Ingenieurs en Electronique et Electrotechnique.)

As an inducement material to Mr. Lacroix's employment, in accordance with NASDAQ Stock Market Marketplace Rule 4350(i)(l)(A)(iv), the Company has granted him a stock option to purchase 262,500 shares of common stock at an exercise price of $4.33 per share, which equals the closing price of a share of MoSys common stock on the NASDAQ Global Market on February 21, 2008.

The Company also announced that in accordance with NASDAQ Marketplace Rule 4350(i)(l)(A)(iv), it has and will grant to ninety-four employees options to purchase a total of 350,000 shares of common stock as inducements material to such individuals entering into employment with the Company. The individuals are employed at the Company's mixed signal design subsidiaries based in Shanghai, China and Bucharest, Romania that the Company acquired from Atmel Corporation in 2007. The acquisition of these subsidiaries was recently formalized by the Company.

About MoSys, Inc.

Founded in 1991, MoSys (NASDAQ: MOSY), develops, licenses and markets innovative memory and analog/mixed-signal technologies for semiconductors. MoSys' patented 1T-SRAM and 1T-FLASH technologies offer a combination of high density, low power consumption, high speed and low cost unmatched by other available memory technologies. 1T-SRAM technologies also offer the familiar, refresh-free interface and high performance for random address access cycles associated with traditional SRAMs. In addition, these technologies can reduce operating power consumption by a factor of four compared with traditional SRAM technology, making them ideal for embedding large memories in System on Chip (SoC) designs. MoSys' licensees have shipped more than 135 million chips incorporating 1T-SRAM embedded memory technologies, demonstrating excellent manufacturability in a wide range of silicon processes and applications. MoSys' analog/mixed-signal products feature a number of industry firsts, including the first DVD front end IP to support both Blu-ray and HD DVD formats. Using MoSys IP, system vendors can achieve best-in-class price/performance in markets such as home entertainment and graphics applications; mobile consumer devices; and networking and storage equipment. MoSys is headquartered at 755 N. Mathilda Avenue, Sunnyvale, California 94085. More information is available on MoSys' website at http://www.mosys.com.