---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-25-040434"
form_type: "8-K"
ticker: "ON"
cik: "0001097864"
company_name: "ON SEMICONDUCTOR CORP"
filed_at: "2025-11-05T23:59:59+00:00"
generated_at: "2026-05-17T00:10:41.130446+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Board Chair Alan Campbell to retire at 2026 annual meeting; Thomas Deitrich named successor

## Summary
- Alan Campbell to retire as chair and director at end of term, effective immediately prior to May 14, 2026 annual meeting.
- Board appointed Thomas L. Deitrich to succeed Campbell as chair, contingent on Deitrich's renomination and reelection.
- Campbell confirmed retirement not due to any disagreement with company's operations, policies, or practices.

## SEC filing metadata
- accession: 0001140361-25-040434
- form_type: 8-K
- ticker: ON
- cik: 0001097864
- company_name: ON SEMICONDUCTOR CORP
- filed_at: 2025-11-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1097864/000114036125040434/0001140361-25-040434-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1097864/000114036125040434/ef20058222_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-25-040434
- JSON: https://secwatch.observer/filing/0001140361-25-040434.json
- Plain text: https://secwatch.observer/filing/0001140361-25-040434.txt

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