---
schema_version: "secwatch.filing_event.v1"
accession: "0001680062-26-000016"
form_type: "8-K"
ticker: "ACMR"
cik: "0001680062"
company_name: "ACM Research, Inc."
filed_at: "2026-02-04T23:59:59+00:00"
generated_at: "2026-05-16T04:57:33.911751+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# ACM Shanghai explains Q4 2025 revenue decline; maintains 2026 gross margin 42%-48%

## Summary
- Q4 2025 revenue fell QoQ due to equipment delivery delays and revenue recognition timing to Q1 2026.
- 2026 revenue guidance difference between ACM Shanghai (Chinese GAAP) and ACMR (US GAAP) due to recognition policies.
- Advanced packaging equipment (ex-electroplating) ~10% of 2025 revenue; electroplating >20%.
- Gross margin expected stable in 42%-48% range, R&D expense ratio 14%-19% for 2026.
- Overseas expansion: products delivered to customers in Singapore and four systems to US in 2025.

## SEC filing metadata
- accession: 0001680062-26-000016
- form_type: 8-K
- ticker: ACMR
- cik: 0001680062
- company_name: ACM Research, Inc.
- filed_at: 2026-02-04T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1680062/000168006226000016/0001680062-26-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680062/000168006226000016/acmr-20260204.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001680062-26-000016
- JSON: https://secwatch.observer/filing/0001680062-26-000016.json
- Plain text: https://secwatch.observer/filing/0001680062-26-000016.txt

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