What unvested performance share units does Mike F. Chang have in AOSL?

The filing notes 35,625 unvested shares under performance share units granted on March 15, 2024 and March 17, 2025. These units vest only if specified service-based vesting conditions for the reporting person are satisfied.

What market-based performance share units are outstanding for AOSL’s Mike F. Chang?

Mike F. Chang has 45,000 unvested shares tied to market-based performance share units granted on July 1, 2018. These are subject to service-based vesting conditions, meaning they vest over time if employment-related requirements are met.

What restricted share units and additional PSUs are mentioned for AOSL’s insider?

The Form 4 references 67,500 shares subject to restricted share unit awards that will be issued as they vest, and it excludes 22,500 unvested common shares under a 2026 performance share unit grant that may vest upon future corporate performance.

Alpha & Omega (AOSL) director gifts 30,000 shares, retains large stake

Q: What insider transaction did AOSL director Mike F. Chang report?

Mike F. Chang reported a bona fide gift of 30,000 Alpha & Omega Semiconductor Common Shares. The shares were transferred at $0.00 per share , indicating a non-market, non-cash transaction rather than an open-market sale or purchase.

Q: How many Alpha & Omega Semiconductor shares does Mike F. Chang hold after the gift?

After the gift, Mike F. Chang holds 3,584,294 Common Shares directly and 776,032 Common Shares indirectly through the CHANG TRUST. These totals include various unvested and performance-based equity awards detailed in the footnotes.

Q: Was the AOSL transaction a sale or a purchase on the open market?

The Form 4 describes the 30,000-share transfer as a bona fide gift , not an open-market sale or purchase. The transaction code is G , which denotes a gift disposition with no sale proceeds or market pricing involved.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Alpha & Omega Semiconductor director and 10% owner Mike F. Chang reported a bona fide gift of 30,000 Common Shares at $0.00 per share. After this gift, he holds 3,584,294 Common Shares directly and 776,032 Common Shares indirectly through the CHANG TRUST.

The indirect holdings include 35,625 unvested shares under performance share units granted in 2024 and 2025, 45,000 unvested shares under market-based performance share units granted in 2018, and 67,500 shares subject to restricted share unit awards that will be issued as the units vest.

Insider Trade Summary

30,000 shares gifted

Mixed 2 txns

Insider Chang Mike F

Role null

Type	Security	Shares	Price	Value
Gift	Common Shares	30,000	$0.00	--
holding	Common Shares	--	--	--

Holdings After Transaction: Common Shares — 3,584,294 shares (Direct, null); Common Shares — 776,032 shares (Indirect, By CHANG TRUST)

Footnotes (1)

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. 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. 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.

Key Figures

Gifted shares: 30,000 shares Direct holdings after transaction: 3,584,294 shares Indirect holdings after transaction: 776,032 shares +4 more

7 metrics

Gifted shares 30,000 shares Bona fide gift of Common Shares at $0.00 per share

Direct holdings after transaction 3,584,294 shares Common Shares held directly following the gift

Indirect holdings after transaction 776,032 shares Common Shares held indirectly through CHANG TRUST

Unvested PSUs (service-based) 35,625 shares Performance Share Units granted March 15, 2024 and March 17, 2025

Unvested market-based PSUs 45,000 shares Market-Based Performance Share Units granted July 1, 2018

RSU awards 67,500 shares Shares subject to RSU awards to be issued upon vesting

Excluded 2026 PSU grant 22,500 shares Unvested common shares that may vest upon corporate performance

Key Terms

bona fide gift, Performance Share Unit (PSU), Market-Based Performance Share Unit (MSU), Restricted Share Unit awards (RSU), +1 more

5 terms

bona fide gift financial

"transaction_code_description: Bona fide gift"

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

unvested common shares financial

"excludes 22,500 unvested common shares subject to the PSU granted on March 16, 2026"

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Form 4 Insider Transactions: What Each Field Means →

06/03/2026 - 04:59 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chang Mike F

(Last)

(First)

(Middle)

475 OAKMEAD PARKWAY

(Street)

SUNNYVALE

CALIFORNIA

94085

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ALPHA & OMEGA SEMICONDUCTOR Ltd [ AOSL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares	06/01/2026		G		30,000	D	$0	3,584,294⁽¹⁾⁽²⁾⁽³⁾	D
Common Shares								776,032	I	By CHANG TRUST

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. 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.

2. 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.

3. 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.

Remarks:

	/s/ Yanbing Hong, attorney-in-fact for Mike F. Chang	06/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did AOSL director Mike F. Chang report?

Mike F. Chang reported a bona fide gift of 30,000 Alpha & Omega Semiconductor Common Shares. The shares were transferred at $0.00 per share, indicating a non-market, non-cash transaction rather than an open-market sale or purchase.

How many Alpha & Omega Semiconductor shares does Mike F. Chang hold after the gift?

After the gift, Mike F. Chang holds 3,584,294 Common Shares directly and 776,032 Common Shares indirectly through the CHANG TRUST. These totals include various unvested and performance-based equity awards detailed in the footnotes.

Was the AOSL transaction a sale or a purchase on the open market?

The Form 4 describes the 30,000-share transfer as a bona fide gift, not an open-market sale or purchase. The transaction code is G, which denotes a gift disposition with no sale proceeds or market pricing involved.