[FORM 20-F (Mark One) O2MICRO INTERNATIONAL LIMITED The Cayman Islands (Jurisdiction of Incorporation or Organization) Grand Pavilion Commercial Centre, West Bay Road P.O. Box 32331 SMB, George Town Grand Cayman, Cayman Islands the Act: Title of Each Class Name of Each Exchange On Which Registered ------------------- ----------------------------------------- American Depositary Shares Nasdaq Global Select Market Act: None (Title of Class) 15(d)]

[FORM 20-F (Mark One) O2MICRO INTERNATIONAL LIMITED Theyman Islands (Jurisdiction oforporation or Organization) Grand Pavilionmmercial Centre, West Bay Road P.O. Box 32331 SMB, George Town Grandyman,yman Islands the Act: Title of Each Class Name of Each Exchange On Which Registered ------------------- ----------------------------------------- American Depositary Shares Nasdaq Global Select Market Act: None (Title of Class) 15(d)]