O2Micro Will Announce First Quarter 2013 Results on May 1, 2013

Wed Apr 10, 2013 8:30am EDT

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GEORGE TOWN, Grand Cayman, April 10, 2013 (GLOBE NEWSWIRE) -- Grand Cayman, April 10, 2013.
O2Micro® International Limited, (Nasdaq:OIIM), a global leader in the design, development and
marketing of high-performance integrated circuits and solutions, will announce its financial
results for the first quarter, ended March 31, 2013, on Wednesday, May 1, 2013.

The press release will be followed by a conference call at 6:00 a.m. (PDT), 9:00 a.m. (EDT). You
may participate using the following dial-in information.

 In the US and CANADA:        888-438-5525,  pass code #9442190  
 INTERNATIONAL participants:  719-325-2454,  pass code #9442190  


A replay of the call will be available by phone until May 8th using the following dial-in
information.

 In the US and CANADA:        888-203-1112,  pass code #9442190  
 INTERNATIONAL participants:  719-457-0820,  pass code #9442190  


A live webcast will also be available on the Company's website at http://ir.o2micro.com
http://www.globenewswire.com/newsroom/ctr?d=10027938&l=4&u=http%3A%2F%2Fir.o2micro.com , and an
online replay will be available on the website for one week.

About O2Micro

Founded in April 1995, O2Micro develops and markets innovative power management components for the
Computer, Consumer, Industrial, Automotive and Communications markets. Products include LED
General Lighting, Backlighting, Battery Management and Power Management.

O2Micro International maintains an extensive portfolio of intellectual property with 22,390 patent
claims granted, and over 24,000 more pending. The company maintains offices worldwide. Additional
company and product information can be found on the company website at www.o2micro.com
http://www.globenewswire.com/newsroom/ctr?d=10027938&l=7&a=www.o2micro.com&u=http%3A%2F%2Fwww.o2micro.com%2F
.

O2Micro, the O2Micro logo, and combinations thereof are registered trademarks of O2Micro. All
other trademarks are the property of their respective owners.

CONTACT: Scott L. Anderson
         Director of Investor Relations, O2Micro
         Phone: 408.987.5920, x8888
         Email: scott.anderson@o2micro.com