---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-054506"
form_type: "8-K"
ticker: "UCTT"
cik: "0001275014"
company_name: "Ultra Clean Holdings, Inc."
filed_at: "2023-10-23T23:59:59+00:00"
generated_at: "2026-06-09T16:21:22.232310+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.78
calibrated_materiality_score: 0.78
confidence: "high"
source: SEC EDGAR
---

# Ultra Clean pre-announces Q3 GAAP EPS ~$(0.32), well below prior guidance; revenue at/above midpoint

## Summary
- Revenue expected at or above $430M midpoint of $405-$455M guidance range.
- GAAP diluted EPS ~$(0.32) vs prior guidance $(0.19)-$0.04; non-GAAP EPS ~$0.04 vs $0.08-$0.28.
- Shortfall due to abrupt Services business volume decline, reduced efficiencies, unfavorable product/geographic mix.
- Full Q3 results to be released Oct 25, 2023 after market close; conference call at 1:45 p.m. PT.

## SEC filing metadata
- accession: 0000950170-23-054506
- form_type: 8-K
- ticker: UCTT
- cik: 0001275014
- company_name: Ultra Clean Holdings, Inc.
- filed_at: 2023-10-23T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.78
- calibrated_materiality_score: 0.78
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1275014/000095017023054506/0000950170-23-054506-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1275014/000095017023054506/uctt-20231023.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-054506
- JSON: https://secwatch.observer/filing/0000950170-23-054506.json
- Plain text: https://secwatch.observer/filing/0000950170-23-054506.txt

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