---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-038545"
form_type: "8-K"
ticker: "UCTT"
cik: "0001275014"
company_name: "Ultra Clean Holdings, Inc."
filed_at: "2025-08-07T23:59:59+00:00"
generated_at: "2026-05-17T17:10:03.201369+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Ultra Clean appoints James Xiao as CEO effective Sept 2, 2025; Chris Cook becomes CBO

## Summary
- James Xiao appointed CEO effective Sept 2, 2025; Clarence Granger steps down as CEO but remains non-executive Chair.
- Xiao base salary $710K, 105% target bonus, $600K sign-on, equity $5M ($2M RSU + $3M annual equity).
- Chris Cook promoted to Chief Business Officer; salary $595K, 85% target bonus, $1.7M RSU one-time award.
- Cook severance: 100% salary & bonus, 12 mo. COBRA, equity vest 12 mo.; change-in-control: 150% plus 24 mo.

## SEC filing metadata
- accession: 0001628280-25-038545
- form_type: 8-K
- ticker: UCTT
- cik: 0001275014
- company_name: Ultra Clean Holdings, Inc.
- filed_at: 2025-08-07T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1275014/000162828025038545/0001628280-25-038545-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1275014/000162828025038545/uctt-20250804.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-038545
- JSON: https://secwatch.observer/filing/0001628280-25-038545.json
- Plain text: https://secwatch.observer/filing/0001628280-25-038545.txt

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