SUNNYVALE, Calif., Oct 14, 2008 (BUSINESS WIRE) — MoSys, Inc., (NASDAQ: MOSY), a leading provider of high-density
system-on-ship (SoC) memory and analog/mixed-signal intellectual
property (IP), today announced preliminary operating results for the
third quarter and nine months ended September 30, 2008 with estimated
total net revenue ranging from $3.9 million to $4.2 million and an
estimated net loss on a GAAP basis ranging from $3.0 million to $3.3
million for the three months ended September 30, 2008. Estimated total
net revenue for the nine months ended September 30, 2008 is expected to
range from $9.9 million to $10.2 million, and the estimated net loss on
a GAAP basis for that same period is expected to range from $11.9
million to $12.2 million. The Company noted that these results
are not final for the periods and are subject to final closing
adjustments, as well as interim period review by its auditors.

The Company also announced that its board of directors has authorized
the Company to purchase up to $5 million of its common stock over the
next 12 months. Repurchases will be conducted from time to time in the
open market, subject to market conditions and other factors such as a
determination that the Company believes the repurchase will be
beneficial to stockholders. These repurchases may be commenced or
suspended at any time or from time to time without prior notice. As of
September 30, 2008, the Company had approximately 32 million shares
outstanding and also had cash and investments of approximately $72
million.

In addition, the Company announced it will release its full third
quarter 2008 financial results on Thursday, October 30, 2008, after the
market closes. Following the release, Len Perham, MoSys’
President and Chief Executive Officer, and Jim Sullivan, Chief Financial
Officer, will host a live audio Webcast and conference call at 4:30 p.m.
Eastern Time (1:30 p.m. Pacific Time).

Third Quarter 2008 Webcast/Conference Call

To access the call, please dial 1-888-680-0865 and enter the pass
code 83033684 at least 10 minutes prior to the start of the call.

Date: Thursday, October 30, 2008

Time: 4:30 p.m. Eastern Time (1:30 p.m. Pacific Time)

Conference Call Number: 1-888-680-0865

International Callers: 1-617-213-4853

Pass Code: 83033684

The conference call replay will be available for 48 hours beginning two
hours after the call. The replay number is 888-286-8010 with a pass code
of 84985199. International callers should dial 617-801-6888 and enter
the same pass code at the prompt.

In addition, the live audio conference call and replay will be available
on the investor relations section of the Company’s Web site at http://www.mosys.com.

One may also pre-register their attendance for the conference call,
which will enable immediate entry into the call. To pre-register
please go to: https://www.theconferencingservice.com/prereg/key.process?key=
PMGW6ARAX

(Due to its length, this URL may need to be copied/pasted into your
Internet browser’s address field.)

Forward-Looking Statements

This press release may contain forward-looking statements about the
Company, including, without limitation, benefits and performance
expected from use of the Company’s 1T-SRAM,
1T-FLASH and analog/mixed-signal technologies, the Company’s
execution and results, improving operational efficiencies, growth of the
business and future business prospects.

Forward-looking statements are based on certain assumptions and
expectations of future events that are subject to risks and
uncertainties. Actual results and trends may differ materially from
historical results or those projected in any such forward-looking
statements depending on a variety of factors. These factors include, but
are not limited to, completion of the Company’s
accounting closing and review of all operating results for the three and
nine months ended September 30, 2008, and other risks identified in the
Company’s most recent reports on forms 10-Q
and 10-K filed with the Securities and Exchange Commission, as well as
other reports that MoSys files from time to time with the Securities and
Exchange Commission.

About MoSys, Inc.

Founded in 1991, MoSys (NASDAQ: MOSY), develops, markets and licenses
innovative embedded memory and analog/mixed-signal intellectual property
(IP) technologies for advanced SoCs used in a variety of home
entertainment, mobile consumer, networking and storage applications.
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. MoSys’
advanced analog/mixed-signal technologies include a highly integrated
Blu-ray DVD front-end and Gigabit Ethernet. MoSys’ embedded memory IP
has been included in more than 160 million devices demonstrating
silicon-proven manufacturability in a wide range of processes and
applications. MoSys is headquartered at 755 N. Mathilda Avenue,
Sunnyvale, California 94085. More information is available on MoSys’
website at http://www.mosys.com.

MoSys and 1T-SRAM are registered trademarks of MoSys, Inc.
1T-FLASH(TM) is a trademark of MoSys, Inc.

SOURCE: MoSys, Inc.

MoSys, Inc.
Jim Sullivan, CFO, 408-731-1800
jsullivan@mosys.com
or
Shelton Group, Investor Relations
Beverly Twing, 972-239-5119 ext. 126
Sr. Acct. Manager
btwing@sheltongroup.com