# EDGAR Filing Document

**Accession Number:** 0001511393
**File Stem:** 0001387467-23-000003
**Filing Date:** 2023-1
**Character Count:** 7140
**Document Hash:** a7f6bad28e44d275b25361fb37cf85d0
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001387467-23-000003.hdr.sgml**: 20230110

**ACCESSION NUMBER**: 0001387467-23-000003

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230109

**FILED AS OF DATE**: 20230110

**DATE AS OF CHANGE**: 20230110

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Chang Mike F
- **CENTRAL INDEX KEY:** 0001511393

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34717
- **FILM NUMBER:** 23522100

**MAIL ADDRESS:**
- **STREET 1:** 475 OAKMEAD PARKWAY
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ALPHA & OMEGA SEMICONDUCTOR Ltd
- **CENTRAL INDEX KEY:** 0001387467
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **IRS NUMBER:** 000000000
- **FISCAL YEAR END:** 0630

**BUSINESS ADDRESS:**
- **STREET 1:** 475 OAKMEAD PARKWAY
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085
- **BUSINESS PHONE:** 408-830-9742

**MAIL ADDRESS:**
- **STREET 1:** 475 OAKMEAD PARKWAY
- **CITY:** SUNNYVALE
- **STATE:** CA
- **ZIP:** 94085

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALPHA & OMEGA SEMICONDUCTOR LTD
- **DATE OF NAME CHANGE:** 20070123

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Chang Mike F<br><sub>(Last) (First) (Middle)</sub><br>475 OAKMEAD PARKWAY<br><sub>(Street)</sub><br>SUNNYVALE, CA 94085<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-01-09 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Executive Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>ALPHA & OMEGA SEMICONDUCTOR Ltd [ AOSL ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Shares | 2023-01-09 |  | M |  | 56400 | A | $8.45 | 4408610<sup>(1)(2)</sup> | D |  |
| Common Shares | 2023-01-09 |  | S |  | 56400<sup>(3)</sup> | D | 29.9556<sup>(4)</sup> | 4352210<sup>(1)(2)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Employee Share Option (right to buy) | $8.45 | 2023-01-09 |  | M |  | 56400 |  | <sup>(5)</sup> | 2023-02-14 | Common Shares | 56400.0 | $0 | 0 | D |  |

---

### Footnotes:

(1) Includes an aggregate of 170,000 shares subject to Restricted Share Unit awards (RSU) granted on March 15, 2019, March 16, 2020, March 15, 2021, and March 15, 2022 which will be issued as such units vest in accordance with their terms, and excludes 70,000 unvested common shares subject to the PSU granted on March 15, 2022, which may become vested upon achievement of certain corporate performance goals in the future.

(2) Includes 52,500 unvested shares subject to the PSU granted on March 15, 2021 and 35,000 unvested shares subject to the PSU granted on March 16, 2020 which are subject to vesting upon satisfaction of service-based vesting conditions by the Reporting Person.

(3) The sales were effected pursuant to a Rule 10b5-1 trading plan adopted previously by the Reporting Person.

(4) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $29.55 to $30.53, inclusive. The Reporting Person undertakes to provide to Alpha and Omega Semiconductor Limited, any security holder of Alpha and Omega Semiconductor Limited, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range.

(5) The option is fully vested and immediately exercisable for all option shares.

**Signature:** /s/ Yanbing Hong, attorney-in-fact for Mike F. Chang  
**Date:** 2023-01-10

### Remarks:

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.**