---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-26-023310"
form_type: "8-K"
ticker: "ACMR"
cik: "0001680062"
company_name: "ACM Research, Inc."
filed_at: "2026-05-29T20:01:48+00:00"
generated_at: "2026-05-29T20:03:33.910159+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ACM Shanghai board approves H-share listing on HKEX Main Board, up to 7% of share capital

## Summary
- Board of ACM Shanghai (subsidiary of ACMR) approved H-share offering and listing on HKEX Main Board.
- Proposed issuance of H shares up to 7% of total share capital post-offering, with 15% over-allotment option.
- Use of proceeds: product development, R&D, global expansion, working capital, and loan repayment.
- Listing subject to shareholder approval and regulatory clearances from CSRC, SEHK, SFC.
- Resolution validity period of 24 months from shareholder approval, extendable if approvals obtained.

## SEC filing metadata
- accession: 0001140361-26-023310
- form_type: 8-K
- ticker: ACMR
- cik: 0001680062
- company_name: ACM Research, Inc.
- filed_at: 2026-05-29T20:01:48+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/1680062/000114036126023310/0001140361-26-023310-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680062/000114036126023310/ef20075131_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-26-023310
- JSON: https://secwatch.observer/filing/0001140361-26-023310.json
- Plain text: https://secwatch.observer/filing/0001140361-26-023310.txt

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