X0202 SCHEDULE 13G/A 0001511393 XXXXXXXX LIVE 8 Common Share 06/30/2026 0001387467 Alpha and Omega Semiconductor Limited G6331P104 475 Oakmead Parkway Sunnyvale CA 94085 Rule 13d-1(d) Mike F. Chang X1 3436169.00 776032.00 3436169.00 776032.00 4212201.00 N 13.9 IN Alpha and Omega Semiconductor Limited 475 Oakmead Parkway, Sunnyvale, California, 94085 Mike F. Chang c/o Alpha and Omega Semiconductor Limited, 475 Oakmead Parkway, Sunnyvale, California 94085 U.S.A. Y As of June 30, 2026, the aggregate amount beneficially owned by the Reporting Person is 4,212,201 common shares of the Issuer. The Reporting Person has sole power to vote or to direct the vote and sole power to dispose or direct the disposition of 3,436,169 common shares, and shared power to vote or to direct the vote and shared power to dispose or direct the disposition of 776,032 common shares. The Reporting Person beneficially owned approximately 13.9% of the outstanding common shares of the Issuer, which is calculated based on 30,253,076 common shares issued and outstanding as of June 30, 2026, as disclosed by the Issuer to the Reporting Person. 3,436,169 776,032 3,436,169 776,032 Y N N Not Applicable N Not Applicable N Not Applicable N Not Applicable Y Mike F. Chang Mike F. Chang Mike F. Chang / Director 08/10/2026