Were the AOSL CFO’s recent AOSL share sales under a Rule 10b5-1 plan?

Yes. The Form 4 footnotes state the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 21, 2025. Such plans are pre-arranged and are designed to systematize trading independent of short-term market conditions.

What unvested performance share units does the AOSL CFO currently have?

The CFO’s holdings include 22,500 unvested market-based performance share units granted July 1, 2018 and 25,625 unvested performance share units granted March 15, 2024 and March 17, 2025. These units vest only if specific service-based and corporate performance conditions are met.

What restricted share units (RSUs) are outstanding for the AOSL CFO?

The Form 4 notes 52,500 shares subject to RSU awards granted in 2023, 2024, 2025, and 2026. These RSUs convert into common shares only as they vest over time, reflecting ongoing equity-based compensation tied to continued service at Alpha & Omega Semiconductor.

AOSL (NASDAQ: AOSL) CFO trims stake, sells 26,517 pre-planned shares

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Alpha & Omega Semiconductor CFO Yifan Liang sold common shares of AOSL in pre-planned trades. On April 14, 2026, he completed open-market sales totaling 26,517 common shares at prices around $29, $30, and about $32.00 per share under a Rule 10b5-1 trading plan adopted on August 21, 2025.

After these transactions, Liang directly holds 278,628 common shares, plus significant unvested equity awards. These include 22,500 market-based performance share units, 25,625 performance share units, and 52,500 restricted share units that may vest over time if service and performance conditions are met.

Insider Trade Summary 10b5-1

Net Seller: 26,517 shares ($810,495)

Net Sell 3 txns

Insider Liang Yifan

Role CFO and Corp Secretary

Sold 26,517 shs ($810K)

Type	Security	Shares	Price	Value
Sale	Common Shares	7,391	$29.00	$214K
Sale	Common Shares	7,939	$30.00	$238K
Sale	Common Shares	11,187	$32.0002	$358K

Holdings After Transaction: Common Shares — 297,754 shares (Direct)

Footnotes (1)

The sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 21, 2025. The price reported in Column 4 is the exact price at which all shares were sold. Includes 22,500 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 25,625 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 an aggregate of 52,500 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.0000 to $32.0200, 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.

Key Figures

Shares sold total: 26,517 shares First sale tranche: 7,391 shares at $29.00/share Second sale tranche: 7,939 shares at $30.00/share +5 more

8 metrics

Shares sold total 26,517 shares Open-market sales on April 14, 2026

First sale tranche 7,391 shares at $29.00/share Common Shares, open-market sale

Second sale tranche 7,939 shares at $30.00/share Common Shares, open-market sale

Third sale tranche 11,187 shares at ~$32.00/share Weighted average price $32.0000–$32.0200

Shares held after trades 278,628 shares Direct common share ownership after April 14, 2026 sales

Unvested MSUs 22,500 shares Market-Based Performance Share Units granted July 1, 2018

Unvested PSUs 25,625 shares Performance Share Units granted March 15, 2024 and March 17, 2025

Unvested RSUs 52,500 shares Restricted Share Unit awards granted 2023–2026

Key Terms

Rule 10b5-1 trading plan, Market-Based Performance Share Unit (MSU), Performance Share Unit (PSU, Restricted Share Unit awards (RSU), +1 more

5 terms

Rule 10b5-1 trading plan financial

"The sales were effected pursuant to a Rule 10b5-1 trading plan adopted..."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price. These shares were sold..."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Form 4 Insider Transactions: What Each Field Means →

04/16/2026 - 04:14 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^*

Liang Yifan

(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)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	CFO and Corp Secretary

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/14/2026

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	04/14/2026		S		7,391⁽¹⁾	D	$29⁽²⁾	297,754⁽³⁾⁽⁴⁾⁽⁵⁾	D
Common Shares	04/14/2026		S		7,939⁽¹⁾	D	$30⁽²⁾	289,815⁽³⁾⁽⁴⁾⁽⁵⁾	D
Common Shares	04/14/2026		S		11,187⁽¹⁾	D	$32.0002⁽⁶⁾	278,628⁽³⁾⁽⁴⁾⁽⁵⁾	D

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. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 21, 2025.

2. The price reported in Column 4 is the exact price at which all shares were sold.

3. Includes 22,500 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.

4. Includes 25,625 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.

5. Includes an aggregate of 52,500 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.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.0000 to $32.0200, 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.

Remarks:

	/s/ Yanbing Hong, attorney-in-fact for Yifan Liang	04/16/2026
	** 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 CFO Yifan Liang report on this Form 4?

Yifan Liang reported selling 26,517 AOSL common shares in open-market transactions. The sales occurred on April 14, 2026 at prices near $29, $30, and $32 per share, and were executed under a previously adopted Rule 10b5-1 trading plan.

At what prices did the AOSL CFO sell his Alpha & Omega Semiconductor shares?

The CFO sold shares in three price brackets: 7,391 shares at $29.00, 7,939 shares at $30.00, and 11,187 shares at a weighted average price near $32.00 per share, including trades between $32.0000 and $32.0200, according to the Form 4 footnotes.

How many Alpha & Omega Semiconductor shares does the AOSL CFO hold after the sales?

Following these Form 4 transactions, the AOSL CFO directly holds 278,628 common shares. This figure is in addition to multiple unvested equity awards, including performance-based and time-based share units that may vest if specified conditions are satisfied.