Mike F. Chang - Oct 20, 2025 Form 4 Insider Report for ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL)

Role
Director, 10%+ Owner
Signature
/s/ Yanbing Hong, attorney-in-fact for Mike F. Chang
Stock symbol
AOSL
Transactions as of
Oct 20, 2025
Transactions value $
$0
Form type
4
Date filed
10/21/2025, 07:29 PM
Previous filing
Mar 18, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chang Mike F Director, 10%+ Owner 475 OAKMEAD PARKWAY, SUNNYVALE /s/ Yanbing Hong, attorney-in-fact for Mike F. Chang 2025-10-21 0001511393

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AOSL Common Shares Gift $0 -40K -0.91% $0.00 4.35M Oct 20, 2025 Direct F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Includes an aggregate of 86,875 shares subject to Restricted Share Unit awards (RSU) granted on March 15, 2022, March 15, 2023, March 15, 2024, and March 17, 2025 which will be issued as such units vest in accordance with their terms, and excludes 22,500 unvested common shares subject to the PSU granted on March 17, 2025, which may become vested upon achievement of certain corporate performance goals in the future.
F2 Includes 90,000 unvested shares subject to the Market-Based Performance Share Unit (MSU) granted on July 1, 2018 which are subject to vesting upon satisfaction of service-based vesting conditions by the Reporting Person.
F3 Includes 41,670 unvested shares subject to the Performance Share Unit (PSU) granted on March 15, 2022 and March 15, 2024 which are subject to vesting upon satisfaction of service-based vesting conditions by the Reporting Person.