---
schema_version: "secwatch.filing_event.v1"
accession: "0001387467-25-000027"
form_type: "8-K"
ticker: "AOSL"
cik: "0001387467"
company_name: "ALPHA & OMEGA SEMICONDUCTOR Ltd"
filed_at: "2025-03-04T23:59:59+00:00"
generated_at: "2026-05-25T13:32:45.644993+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Alpha and Omega Semiconductor Executive Chairman Mike F. Chang Steps Down, Appointed EVP of Strategic Initiative

## Summary
- Dr. Mike F. Chang resigned as Executive Chairman effective March 3, 2025, but remains a director and Chairman of the Board.
- Chang was appointed as Executive Vice President of Strategic Initiative; base salary reduced to $425,000 per year and target annual cash bonus to 70%.
- Chang granted 22,500 time-vesting RSUs and 22,500 performance-vesting RSUs under the 2018 Omnibus Incentive Plan.
- Compensation Committee approved a 2025 Executive Bonus Plan with performance goals based on non-GAAP EPS and revenue, with bonuses ranging from 16% to 220% of base salary for named officers.
- Named executive officers include CEO Stephen Chang (target 100%), CFO Yifan Liang (target 70%), and three others with target 70% each.

## SEC filing metadata
- accession: 0001387467-25-000027
- form_type: 8-K
- ticker: AOSL
- cik: 0001387467
- company_name: ALPHA & OMEGA SEMICONDUCTOR Ltd
- filed_at: 2025-03-04T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1387467/000138746725000027/0001387467-25-000027-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1387467/000138746725000027/aosl-20250228.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001387467-25-000027
- JSON: https://secwatch.observer/filing/0001387467-25-000027.json
- Plain text: https://secwatch.observer/filing/0001387467-25-000027.txt

## Key facts
- Executive change
  Mike F. Chang was appointed as Executive Vice President of Strategic Initiative at ALPHA & OMEGA SEMICONDUCTOR Ltd.
  - Action: resigned as Executive Chairman and appointed as Executive Vice President of Strategic Initiative
  - Role: Executive Vice President of Strategic Initiative
  source text: On March 3, 2025, Dr. Mike F. Chang resigned his position as Executive Chairman of Alpha & Omega Semiconductor Limited (the “Company”) effective immediately, and Dr. Chang will continue to serve as a director and Chairman of the Board. Also on March 3, 2025, the Board of Directors of the Company (the “Board”) appointed Dr. Chang as Executive Vice President of Strategic Initiative effectively immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1387467/000138746725000027/0001387467-25-000027-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.