---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-025742"
form_type: "8-K"
ticker: "AOSL"
cik: "0001387467"
company_name: "ALPHA & OMEGA SEMICONDUCTOR Ltd"
filed_at: "2026-04-17T23:59:59+00:00"
generated_at: "2026-05-15T05:28:54.565798+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Director Lucas S. Chang retires from AOSL board effective April 17, 2026

## Summary
- Dr. Lucas S. Chang notified the company of his retirement from the Board on April 13, 2026.
- Retirement effective April 17, 2026; no new director named.
- No reasons for departure given beyond retirement; no disputes disclosed.

## SEC filing metadata
- accession: 0001628280-26-025742
- form_type: 8-K
- ticker: AOSL
- cik: 0001387467
- company_name: ALPHA & OMEGA SEMICONDUCTOR Ltd
- filed_at: 2026-04-17T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1387467/000162828026025742/0001628280-26-025742-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1387467/000162828026025742/aosl-20260413.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-025742
- JSON: https://secwatch.observer/filing/0001628280-26-025742.json
- Plain text: https://secwatch.observer/filing/0001628280-26-025742.txt

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