---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-063896"
form_type: "8-K"
ticker: "ACMR"
cik: "0001680062"
company_name: "ACM Research, Inc."
filed_at: "2026-09-30T12:06:46+00:00"
generated_at: "2026-10-12T13:58:09.143898+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ACM Research Shanghai backlog RMB 17.1B ($2.5B) as of Sept 29, up 88.2% YoY

## Summary
- ACM Shanghai total backlog as of September 29, 2026 was RMB 17.1 billion (USD $2.5 billion), an 88.2% increase vs prior year's disclosed backlog.
- Backlog includes tools shipped but not yet recognized as revenue under Chinese GAAP, plus orders expected to ship in the future.
- ACM Shanghai will release nine-month 2026 financial results on October 28, 2026 after China market close; ACM reports preliminary nine-month results before U.S. market open that day.
- ACM will release full Q3 2026 results and hold a conference call in early November 2026; specific date to be announced later.
- Backlog is not a GAAP measure; the company cautions orders may not generate the estimated revenue and its methodology may not be comparable to peers.

## SEC filing metadata
- accession: 0001628280-26-063896
- form_type: 8-K
- ticker: ACMR
- cik: 0001680062
- company_name: ACM Research, Inc.
- filed_at: 2026-09-30T12:06:46+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1680062/000162828026063896/0001628280-26-063896-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680062/000162828026063896/acmr-20260930.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-063896
- JSON: https://secwatch.observer/filing/0001628280-26-063896.json
- Plain text: https://secwatch.observer/filing/0001628280-26-063896.txt

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