Alpha and Omega Semiconductor reports all proposals passed at 2022 AGM

The Company’s shareholders ratified and approved the appointment of Baker Tilly US, LLP as the Company’s independent registered public accounting firm, and authorized the Board, acting through its audit committee, to determine the remuneration of such accounting firm, for the fiscal year ending June 30, 2023, by the votes set forth below: FOR AGAINST ABSTAIN BROKER NON-VOTES UNCAST 23,414,874 28,013 29,034 — 7

The Company’s shareholders approved an amendment to and restatement of the Company's 2018 Omnibus Incentive Plan to increase the number of common shares authorized for issuance under such plan, by the following votes: FOR AGAINST ABSTAIN BROKER NON-VOTES UNCAST 16,227,434 3,350,169 31,396 3,862,922 7

The Company’s shareholders approved, on an advisory basis, the compensation of the Company’s named executive officers as described in the proxy statement, by the following votes: FOR AGAINST ABSTAIN BROKER NON-VOTES 19,284,768 286,965 37,273 3,862,922

The following nine directors were elected to serve on the Board of Directors of the Company (the “Board”) until the 2023 Annual General Meeting of Shareholders or until their respective successors have been duly elected, and qualified as set forth below: DIRECTORS FOR WITHHELD BROKER NON-VOTES Mike F. Chang 19,388,553 220,453 3,862,922 Lucas S. Chang 19,333,383 275,623 3,862,922 Stephen C. Chang 17,877,424 1,731,582 3,862,922 Claudia Chen 19,338,108 270,898 3,862,922 So-Yeon Jeong 18,054,961 1,554,045 3,862,922 Hanqing (Helen) Li 19,567,958 41,048 3,862,922 King Owyang 19,265,999 343,007 3,862,922 Michael L. Pfeiffer 19,577,911 31,095 3,862,922 Michael J. Salameh 19,524,823 84,183 3,862,922