[O2Micro to Announce First Quarter 2015 Results 2 ® GEORGE TOWN, Grand Cayman, April 1, 2015 (GLOBE NEWSWIRE) -- O 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: 888-427-9376, pass code #7055035 INTERNATIONAL participants: 719-325-2484, pass code #7055035] [FORM 6-K April 2015 000-30910 O2Micro International Limited Grand Pavilion Commercial Centre, West Bay Road Note: Note: O2Micro International Limited Chief Executive Officer 6-K 1 document.htm FORM 6-K FILING DOCUMENT]

[FORM 6-K O2MICRO INTERNATIONAL LIMITED Grand Pavilion Commercial Centre, West Bay Road P.O. Box 32331 SMB, George Town Grand Cayman, Cayman Islands x ¨ Form 20-F ¨ Note ¨ Note ¨ x O2Micro International Limited (the “Company”) established Friday, July 17, 2015 as the date of the Company’s 2015 annual general meeting (the “2015 Annual General Meeting”). This Form 6-K]

[O2Micro Reports Fourth Quarter and Fiscal 2014 Financial Results GEORGE TOWN, Grand Cayman, Feb. 4, 2015 (GLOBE NEWSWIRE) -- Operational and Strategic Highlights Company experienced strong design activity in solutions for smartphone and tablet markets; expecting products to ramp in 2015 2 O Lower operating expense levels reflect new cash breakeven level estimate of $17.0-$18.0 million and new profitability breakeven] [FORM 6-K February 2015 000-30910 O2Micro International Limited Grand Pavilion Commercial Centre, West Bay Road Note: Note: O2Micro International Limited Chief Executive Officer 6-K 1 document.htm FORM 6-K FILING DOCUMENT]