Form 4 Filing for ALPHA & OMEGA SEMICONDUCTOR Ltd

This Form 4 filing details a transaction by Joshua C. Chien, a director at ALPHA & OMEGA SEMICONDUCTOR Ltd. On July 20, 2026, Mr. Chien acquired 1368 common shares through a restricted stock unit (RSU) award granted for services on the Board of Directors. The RSUs are part of the Issuer's 2018 Omnibus Incentive Plan and will vest according to specific schedules tied to annual grants and service periods. The acquisition was reported with a transaction price of $0.0 per share, and post-transaction, Mr. Chien holds 1368 shares. This event is classified as an OFFICER_DIRECTOR_CHANGE due to the nature of the reporting individual and the transaction type.