Form 4: AOSL CEO's Stock Transaction: Tax Withholding & Holdings

ALPHA & OMEGA SEMICONDUCTOR CEO Stephen Chang reported a disposition of 12,002 shares for tax obligations, maintaining a beneficial ownership of 564,862 common shares.

Summary

• Stephen Chang, Chief Executive Officer and Director of ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL), reported a transaction on January 2, 2026.
• 12,002 common shares were disposed of at a price of $20.66 per share.
• This disposition was due to shares being withheld to satisfy the Issuer's tax withholding obligation upon the issuance and annual vesting of shares subject to a Market-Based Performance Share Unit (MSU) granted on July 1, 2018.
• Following this reported transaction, Mr. Chang beneficially owns 564,862 common shares directly.
• His beneficial ownership includes 22,500 unvested shares subject to the MSU, 145,625 shares subject to Restricted Share Unit (RSU) awards, and 47,964 unvested shares subject to Performance Share Unit (PSU) awards, all subject to various vesting conditions.
• Additionally, 159 shares were acquired under the Issuer's Employee Stock Purchase Plan on November 14, 2025.

Sentiment

Score: 5

Explanation: The filing reports a routine insider transaction involving shares withheld for tax purposes upon equity award vesting. This is a neutral event for company operations and stock valuation, as it does not reflect a discretionary sale or purchase based on new material information.

Positives

• The CEO continues to hold a significant number of shares (564,862), indicating continued alignment with shareholder interests.
• The acquisition of 159 shares through the Employee Stock Purchase Plan demonstrates ongoing participation in the company's equity programs.

Negatives

• 12,002 shares were disposed of, though this was a non-discretionary transaction for tax purposes rather than a sale initiated by the insider.

Future Outlook

This Form 4 primarily reports a past transaction and does not contain explicit forward-looking statements or guidance regarding the company's future performance or strategic direction, beyond the mention of future vesting schedules for various equity awards.

Industry Context

This filing is a routine insider transaction report and does not provide information relevant to broader industry trends or competitive analysis.

Stakeholder Impact

• Shareholders: Minimal direct impact as this is a routine, non-discretionary transaction for tax purposes, not a sale driven by a change in management's outlook.
• Employees: No direct impact beyond the general understanding of executive compensation practices.

Next Steps

• Future vesting of the remaining 22,500 unvested MSU shares upon satisfaction of service-based conditions.
• Future vesting of the aggregate 145,625 RSU shares in accordance with their terms.
• Future vesting of the aggregate 47,964 unvested PSU shares upon satisfaction of service-based conditions.
• Potential future vesting of 67,500 unvested PSU shares upon achievement of certain corporate performance goals.

Key Dates

Recommendation

This Form 4 details a routine insider transaction where shares were withheld to cover tax obligations upon the vesting of equity awards. Such a transaction is a standard part of executive compensation and does not reflect a discretionary sale or purchase based on new material information about the company's performance or outlook. Therefore, it does not provide a basis for altering an existing investment recommendation.

Keywords

ALPHA & OMEGA SEMICONDUCTOR, AOSL, Stephen Chang, Form 4, insider transaction, stock ownership, CEO, director, share withholding, equity compensation, RSU, PSU, MSU, ESPP