---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-042833"
form_type: "8-K"
ticker: "ACMR"
cik: "0001680062"
company_name: "ACM Research, Inc."
filed_at: "2026-06-12T20:06:10+00:00"
generated_at: "2026-06-12T20:18:46.028667+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# ACM Research stockholders elect four directors and ratify auditor at 2026 annual meeting

## Summary
- Stockholders elected all four board nominees: David H. Wang, Haiping Dun, Tracy Liu, Charles Pappis.
- Ratification of Ernst & Young Hua Ming LLP as auditor for FY2026 approved (135,717,653 for, 40,635 against, 56,209 abstain).
- Total votes present representing 135,814,497 votes (84.32% of outstanding).

## SEC filing metadata
- accession: 0001628280-26-042833
- form_type: 8-K
- ticker: ACMR
- cik: 0001680062
- company_name: ACM Research, Inc.
- filed_at: 2026-06-12T20:06:10+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1680062/000162828026042833/0001628280-26-042833-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680062/000162828026042833/acmr-20260610.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-042833
- JSON: https://secwatch.observer/filing/0001628280-26-042833.json
- Plain text: https://secwatch.observer/filing/0001628280-26-042833.txt

## Key facts
- Shareholder Votes
  ACM Research, Inc. shareholders approved Election of Directors at the 2026-06-10 meeting.
  - Proposal: director election
  - Outcome: passed
  - Meeting: 2026-06-10
  source text: Proposal 1. Stockholders voted as follows with respect to the election of each of the nominees for director identified in the proxy statement: Nominee For Withhold Broker Non-Votes David H. Wang 122,956,333 6,072,472 6,785,692 Haiping Dun 125,995,407 3,033,398 6,785,692 Tracy Liu 121,026,446 8,002,359 6,785,692 Charles Pappis 117,316,569 11,712,236 6,785,692
  evidence_url: https://www.sec.gov/Archives/edgar/data/1680062/000162828026042833/0001628280-26-042833-index.htm
- Shareholder Votes
  ACM Research, Inc. shareholders approved Ratification of appointment of Ernst & Young Hua Ming LLP as independent auditor for fiscal year 2026 at the 2026-06-10 meeting.
  - Proposal: auditor ratification
  - Outcome: passed
  - Meeting: 2026-06-10
  source text: Proposal 2. Stockholders ratified the appointment of Ernst & Young Hua Ming LLP as our independent auditor for the fiscal year ending December 31, 2026 by the following vote: For Against Abstain Ratification of Appointment of Ernst & Young Hua Ming LLP for 2026 135,717,653 40,635 56,209
  evidence_url: https://www.sec.gov/Archives/edgar/data/1680062/000162828026042833/0001628280-26-042833-index.htm

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