---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-025599"
form_type: "8-K"
ticker: "ACMR"
cik: "0001680062"
company_name: "ACM Research, Inc."
filed_at: "2026-04-17T23:59:59+00:00"
generated_at: "2026-05-15T05:32:02.703955+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ACM Shanghai proposes H-share listing on HKEX to expand international reach

## Summary
- ACM Shanghai proposes issuance of H shares and listing on The Stock Exchange of Hong Kong Limited.
- Listing aims to strengthen capital base, attract talent, and enhance international competitiveness.
- Controlling shareholder and actual controller will remain unchanged after the listing.
- Proposal is preliminary; requires Board, shareholder, CSRC, HKEX approvals with significant uncertainty.
- ACM Research (ACMR) operates ACM Shanghai, which trades on Shanghai SSE Sci-Tech board.

## SEC filing metadata
- accession: 0001628280-26-025599
- form_type: 8-K
- ticker: ACMR
- cik: 0001680062
- company_name: ACM Research, Inc.
- filed_at: 2026-04-17T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- 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/1680062/000162828026025599/0001628280-26-025599-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680062/000162828026025599/acmr-20260417.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-025599
- JSON: https://secwatch.observer/filing/0001628280-26-025599.json
- Plain text: https://secwatch.observer/filing/0001628280-26-025599.txt

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