---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-001088"
form_type: "8-K"
ticker: "ONTO"
cik: "0000704532"
company_name: "ONTO INNOVATION INC."
filed_at: "2023-01-24T23:59:59+00:00"
generated_at: "2026-06-20T11:11:02.504241+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Onto Innovation appoints Stephen D. Kelley, CEO of Advanced Energy, to board and audit committee

## Summary
- Board expands from 7 to 8 members with Kelley's appointment effective Jan 24, 2023.
- Kelley currently serves as President & CEO of Advanced Energy Industries (since March 2021).
- Previously was President & CEO of Amkor Technology (2013-2020); also held exec roles at Texas Instruments, Philips, Cree.
- He will serve on the Audit Committee and is deemed independent under NYSE rules.
- Compensation follows standard non-employee director plan; enters indemnification agreement.

## SEC filing metadata
- accession: 0000950170-23-001088
- form_type: 8-K
- ticker: ONTO
- cik: 0000704532
- company_name: ONTO INNOVATION INC.
- filed_at: 2023-01-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/704532/000095017023001088/0000950170-23-001088-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/704532/000095017023001088/onto-20230124.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-001088
- JSON: https://secwatch.observer/filing/0000950170-23-001088.json
- Plain text: https://secwatch.observer/filing/0000950170-23-001088.txt

## Key facts
- Executive change
  Stephen D. Kelley was appointed as Director at ONTO INNOVATION INC..
  - Action: appointed
  - Role: Director
  source text: Effective January 24, 2023, the Board of Directors (“the Board”) of Onto Innovation Inc. (the “Company”) appointed Stephen D. Kelley to the Board for a term continuing until the 2023 Annual Meeting of Stockholders, when all directors will be subject to election by stockholders.
  evidence_url: https://www.sec.gov/Archives/edgar/data/704532/000095017023001088/0000950170-23-001088-index.htm

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