Mike F. Chang - 13 Jul 2026 Form 4 Insider Report for ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: AOSL
Reported as of: 13 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 Jul 2026, 20:03:21 UTC
Prior SEC filing: 03 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Yanbing Hong, attorney-in-fact for Mike F. Chang

Key filing fact

Mike F. Chang filed Form 4 for ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL) on 15 Jul 2026.

Key facts

This page summarizes Mike F. Chang's Form 4 filing for ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 15 Jul 2026, 20:03.

Change

Previous filing in this sequence was filed on 03 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001511393 Primary reporting owner

Chang Mike F

Relationship: Director, 10%+ Owner
Address: 475 OAKMEAD PARKWAY, SUNNYVALE
Signature: /s/ Yanbing Hong, attorney-in-fact for Mike F. Chang
Signature date: 15 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AOSL transaction

Common Shares

Gift

Transaction value
Shares: -23,754
Change %: -0.66%
Price: $0.000000^*
Shares after: 3,560,540
Date: 13 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

AOSL holding

Common Shares

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 799,786
Date: 13 Jul 2026
Ownership: By CHANG TRUST

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

On July 13, 2026, the reporting person transferred 23,754 common shares to the CHANG TRUST for no consideration. The reporting person is the trustee of the trust, and members of the reporting person's immediately family are the sole beneficiaries of the trust. The reporting person remains the beneficial owner of the securities held by the trust.

Footnote F2

Includes 35,625 unvested shares subject to the Performance Share Unit (PSU) granted on March 15, 2024 and March 17, 2025 which are subject to vesting upon satisfaction of service-based vesting conditions by the Reporting Person.

Footnote F3

Includes 45,000 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.

Footnote F4

Includes an aggregate of 67,500 shares subject to Restricted Share Unit awards (RSU) granted on March 15, 2023, March 15, 2024, March 17, 2025, and March 16, 2026 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 16, 2026, which may become vested upon achievement of certain corporate performance goals in the future.