---
schema_version: "secwatch.filing_event.v1"
accession: "0000950103-22-007934"
form_type: "8-K"
ticker: "UCTT"
cik: "0001275014"
company_name: "Ultra Clean Holdings, Inc."
filed_at: "2022-05-04T23:59:59+00:00"
generated_at: "2026-06-26T00:27:47.051964+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Ultra Clean Holdings appoints Christopher S. Cook as President, Products Business

## Summary
- Appointed Christopher S. Cook as President, Products Business effective April 29, 2022.
- Cook previously served as EVP at Cypress Semiconductor, President at Flex Power, and leadership roles at Infineon.
- Annual salary set at $480,000; eligible for management bonus plan with target payout of 60% of base salary.
- Received RSU award valued at $900,000 vesting over 3 years, plus a $100,000 sign-on bonus subject to 12-month retention.

## SEC filing metadata
- accession: 0000950103-22-007934
- form_type: 8-K
- ticker: UCTT
- cik: 0001275014
- company_name: Ultra Clean Holdings, Inc.
- filed_at: 2022-05-04T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1275014/000095010322007934/0000950103-22-007934-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1275014/000095010322007934/dp172606_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950103-22-007934
- JSON: https://secwatch.observer/filing/0000950103-22-007934.json
- Plain text: https://secwatch.observer/filing/0000950103-22-007934.txt

## Key facts
- Executive change
  Christopher S. Cook was appointed as President, Products Business at Ultra Clean Holdings, Inc..
  - Action: appointed
  - Role: President, Products Business
  source text: On April 29, 2022, the Board of Directors (the “Board”) of Ultra Clean Holdings, Inc. (the “Company”) appointed Christopher S. Cook as the Company’s President, Products Business, effective April 29, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1275014/000095010322007934/0000950103-22-007934-index.htm

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