# EDGAR Filing Document

**Accession Number:** 0001387467
**File Stem:** 0001387467-23-000029
**Filing Date:** 2023-3
**Character Count:** 7465
**Document Hash:** 4b1141d9713255c679d7e3dd4a05e979
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001387467-23-000029.hdr.sgml**: 20230317

**ACCESSION NUMBER**: 0001387467-23-000029

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230315

**FILED AS OF DATE**: 20230317

**DATE AS OF CHANGE**: 20230317

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Liang Yifan
- **CENTRAL INDEX KEY:** 0001522325

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34717
- **FILM NUMBER:** 23744285

**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>Liang Yifan<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>2023-03-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_CFO and Corp Secretary_ |
| **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 | 2023-03-15 |  | A |  | 17500<sup>(1)</sup> | A | $0 | 207590<sup>(2)</sup> | D |  |
| Common Shares | 2023-03-15 |  | F |  | 6096<sup>(3)</sup> | D | $25.45 | 201494<sup>(2)</sup> | D |  |
| Common Shares | 2023-03-15 |  | F |  | 4197<sup>(4)</sup> | D | $25.45 | 197297<sup>(2)</sup> | D |  |
| Common Shares | 2023-03-15 |  | A |  | 13545<sup>(5)</sup> | A | $0 | 210842<sup>(2)(6)</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 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The RSU shall vest in equal annual installments over four (4) years from March 15, 2023, provided that the Reporting Person remains in the Issuer's service through each such vesting date.

(2) Includes an aggregate of 47,500 shares subject to Restricted Share Unit awards (RSU) granted on March 16, 2020, March 15, 2021, March 15, 2022, and March 15, 2023 which will be issued as such units vest in accordance with their terms, and excludes 21,455 unvested common shares subject to the PSU granted on March 15, 2023, which may become vested upon achievement of certain corporate performance goals in the future.

(3) Shares withheld to satisfy the Issuer's tax withholding obligation upon the vesting of restricted share units (RSU) granted on March 15, 2019, March 16, 2020, March 15, 2021, and March 15, 2022.

(4) Shares withheld to satisfy the Issuer's tax withholding obligation upon the vesting of Performance Share Units (PSU) granted on March 16, 2020, March 15, 2021, and March 15, 2022.

(5) Represents the vesting of PSU granted on March 15, 2022 upon the achievement of specified performance goals as certified previously by the Compensation Committee on February 22, 2023 and the issuance of shares thereunder is subject to vesting in four equal annual installment commencing in March 2023 provided that the Reporting Person remains in the issuer's service through each such vesting date.

(6) Includes 10,158 unvested shares subject to the PSU granted on March 15, 2022 which are subject to vesting upon satisfaction of service-based vesting conditions by the Reporting Person.

**Signature:** /s/ Yanbing Hong, attorney-in-fact for Yifan Liang  
**Date:** 2023-03-17

### 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.**