---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-000455"
form_type: "8-K"
ticker: "UCTT"
cik: "0001275014"
company_name: "Ultra Clean Holdings, Inc."
filed_at: "2023-01-09T23:59:59+00:00"
generated_at: "2026-06-20T17:34:02.241272+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Ultra Clean Holdings revises Q4 2022 revenue guidance down to $560M-$570M from $600M-$650M

## Summary
- New Q4 2022 revenue guidance of $560M-$570M, down from prior $600M-$650M range.
- Customer order modifications due to weakening industry environment cited as primary driver.
- Resurgence of COVID at UCT's China facility caused manufacturing output declines.
- Company launching cost improvement initiatives to reduce operating expenses.
- Full details to be provided on Q4 and FY 2022 earnings call.

## SEC filing metadata
- accession: 0000950170-23-000455
- form_type: 8-K
- ticker: UCTT
- cik: 0001275014
- company_name: Ultra Clean Holdings, Inc.
- filed_at: 2023-01-09T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1275014/000095017023000455/0000950170-23-000455-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1275014/000095017023000455/uctt-20230109.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-000455
- JSON: https://secwatch.observer/filing/0000950170-23-000455.json
- Plain text: https://secwatch.observer/filing/0000950170-23-000455.txt

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