---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-055184"
form_type: "8-K"
ticker: "UCTT"
cik: "0001275014"
company_name: "Ultra Clean Holdings, Inc."
filed_at: "2023-10-25T23:59:59+00:00"
generated_at: "2026-06-09T09:55:38.916295+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Ultra Clean reports Q3 net loss of $14.5M; revenue $435M misses earnings guidance

## Summary
- Q3 revenue $435.0M (Products $380.9M, Services $54.1M); net loss $(14.5)M ($(0.32)/diluted share).
- GAAP gross margin 15.0%, operating margin 1.3%, down from prior quarter's 16.2% and 3.0%.
- Non-GAAP net income $2.0M ($0.04/diluted) vs $7.1M ($0.16/diluted) in Q2 2023.
- Q4 2023 outlook: revenue $420M-$470M; GAAP EPS $(0.30)-$(0.10); non-GAAP EPS $0.02-$0.22.
- CEO cites decline in higher-margin Services and higher tax rate for earnings below guided range.

## SEC filing metadata
- accession: 0000950170-23-055184
- form_type: 8-K
- ticker: UCTT
- cik: 0001275014
- company_name: Ultra Clean Holdings, Inc.
- filed_at: 2023-10-25T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1275014/000095017023055184/0000950170-23-055184-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1275014/000095017023055184/uctt-20231025.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-055184
- JSON: https://secwatch.observer/filing/0000950170-23-055184.json
- Plain text: https://secwatch.observer/filing/0000950170-23-055184.txt

## Key facts
- Earnings Releases
  Ultra Clean Holdings, Inc. updated its the third quarter ended September 29, 2023 guidance (reaffirmed).
  - Period: the third quarter ended September 29, 2023
  - Guidance: reaffirmed
  - Result: reported results
  source text: Ultra Clean Holdings, Inc. (“UCT,” the “Company” or “We”) issued a press release announcing its financial results for its third fiscal quarter ended September 29, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1275014/000095017023055184/0000950170-23-055184-index.htm

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