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  4. [Form 4] ALPHA & OMEGA SEMICONDUCTOR Ltd Insider Trading Activity

Alpha & Omega Semiconductor (AOSL) EVP sells 875 shares at $33.99

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Alpha & Omega Semiconductor Ltd EVP Xue Bing sold 875 common shares on July 16, 2026 at $33.99 per share in an open-market transaction pursuant to a Rule 10b5-1 trading plan adopted on August 14, 2025.

After the sale, Xue Bing directly holds 122,785 shares, including unvested PSUs, MSUs and RSUs described in the footnotes.

Positive

  • None.

Negative

  • None.
Insider Xue Bing
Role EVP-WW Sales & Bus Development
Sold 875 shs ($30K)
Type Security Shares Price Value
Sale Common Share F1, F2, F3, F4, F5 875 $33.99 $30K
Holdings After Transaction: Common Share — 122,785 shares (Direct)
Footnotes (5)
  1. F1. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 14, 2025.
  2. F2. The price reported in Column 4 is the exact price at which all shares were sold.
  3. F3. Includes 18,750 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.
  4. F4. 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.
  5. F5. Includes an aggregate of 38,750 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 15,000 unvested shares subject to the PSU granted on March 16, 2026, which may become vested upon achievement of certain corporate performance goals in the future.
Shares sold 875 shares Common shares sold on July 16, 2026 by EVP Xue Bing
Sale price $33.99 per share Exact price at which all 875 shares were sold
Post-transaction holdings 122,785 shares Common shares directly held after the sale, including unvested awards
Unvested PSUs 18,750 shares Shares subject to PSUs granted March 15, 2024 and March 17, 2025
Unvested MSUs 22,500 shares Shares subject to MSU granted July 1, 2018
RSU awards 38,750 shares Shares subject to RSU awards granted in 2023, 2024, 2025 and 2026
Excluded PSU grant 15,000 shares Unvested PSU from March 16, 2026 that may vest upon future performance
Rule 10b5-1 trading plan regulatory
"sales were effected pursuant to a Rule 10b5-1 trading plan"
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.
Performance Share Unit (PSU) financial
"unvested shares subject to the Performance Share Unit (PSU)"
Market-Based Performance Share Unit (MSU) financial
"unvested shares subject to the Market-Based Performance Share Unit (MSU)"
Restricted Share Unit awards (RSU) financial
"shares subject to Restricted Share Unit awards (RSU) granted"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transaction did Xue Bing report in AOSL Form 4?
Xue Bing reported selling 875 common shares of Alpha & Omega Semiconductor Ltd (AOSL). The sale occurred on July 16, 2026 in an open-market transaction and was executed under a pre-established Rule 10b5-1 trading plan adopted on August 14, 2025.

At what price and on what date were AOSL shares sold by Xue Bing?
On July 16, 2026, Xue Bing sold 875 AOSL common shares at $33.99 per share. A footnote states this was the exact price at which all reported shares were sold in that transaction, reflecting a single-price open-market sale.

How many AOSL shares does Xue Bing hold after the reported sale?
Following the transaction, Xue Bing directly holds 122,785 Alpha & Omega Semiconductor shares. This total includes various unvested equity awards such as PSUs, MSUs and RSUs that are subject to service-based and performance-based vesting conditions over time.

Were the AOSL insider sales by Xue Bing made under a Rule 10b5-1 plan?
Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Xue Bing on August 14, 2025. Such plans pre-schedule trades, reducing the role of subsequent discretionary timing decisions by the reporting person.

What equity awards are included in Xue Bing’s AOSL holdings after this Form 4?
Post-transaction holdings include 18,750 unvested PSUs, 22,500 unvested MSUs, and an aggregate of 38,750 RSU shares. These awards were granted between 2018 and 2026 and will vest upon meeting specified service-based and, in some cases, performance conditions.

Does this AOSL Form 4 report any derivative security transactions for Xue Bing?
No. The Form 4 reports one non-derivative transaction, a sale of common shares, and shows no derivative security transactions. The derivative transaction count and derivative holdings summary are both zero in the structured data for this filing.

Which PSU grant is excluded from Xue Bing’s current AOSL share total?
The holdings explicitly exclude 15,000 unvested shares subject to a Performance Share Unit grant dated March 16, 2026. Those shares may become vested only if specified future corporate performance goals are achieved, so they are not counted in current share holdings.
SEC Form 4
FORM 4UNITED 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).
X
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*
Xue Bing
(Last)(First)(Middle)
475 OAKMEAD PKWY
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP-WW Sales & Bus Development
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/16/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Share07/16/2026S875(1)D$33.99(2)122,785(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 14, 2025.
2. The price reported in Column 4 is the exact price at which all shares were sold.
3. Includes 18,750 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.
4. 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.
5. Includes an aggregate of 38,750 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 15,000 unvested 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 Bing Xue07/17/2026
** Signature of Reporting PersonDate
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