ACM Research, Inc. SEC filings ACMR
ACM Research, Inc. has 630 filings in SEC EDGAR's recent list, going back to Aug 16, 2016. Its latest annual report, Form 10-K, was filed on Mar 2, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 144 | Notice of proposed sale | Sep 9, 2026 | — |
| 144 | Notice of proposed sale | Sep 8, 2026 | — |
| 4 | Insider transaction | Aug 26, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 26, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 26, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 20, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 18, 2026 |
| 144 | Notice of proposed sale | Aug 20, 2026 | — |
| 144 | Notice of proposed sale | Aug 18, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 31, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | May 13, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| 144 | Notice of proposed sale | Jun 5, 2026 | — |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 144 | Notice of proposed sale | Jun 3, 2026 | — |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 4 | Insider transaction | Apr 21, 2026 | Apr 17, 2026 |
| 144 | Notice of proposed sale | Apr 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 13, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 11, 2026 |
| 4 | Insider transaction | Mar 12, 2026 | Mar 10, 2026 |
| 144 | Notice of proposed sale | Mar 12, 2026 | — |
| 144 | Notice of proposed sale | Mar 12, 2026 | — |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 144 | Notice of proposed sale | Mar 10, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 144 | Notice of proposed sale | Mar 9, 2026 | — |
| 144 | Notice of proposed sale | Mar 6, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 4 | Insider transaction | Feb 6, 2026 | Feb 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2026 | — |
| 4 | Insider transaction | Dec 8, 2025 | Dec 4, 2025 |
| 144 | Notice of proposed sale | Dec 8, 2025 | — |
| 4 | Insider transaction | Dec 5, 2025 | Dec 3, 2025 |
| 4 | Insider transaction | Dec 4, 2025 | Dec 2, 2025 |
| 144 | Notice of proposed sale | Dec 4, 2025 | — |
| 144 | Notice of proposed sale | Dec 4, 2025 | — |
| 144 | Notice of proposed sale | Dec 3, 2025 | — |
| 144 | Notice of proposed sale | Dec 3, 2025 | — |
| 144 | Notice of proposed sale | Dec 2, 2025 | — |
| 4 | Insider transaction | Nov 14, 2025 | Nov 12, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 12, 2025 |
| 144 | Notice of proposed sale | Nov 13, 2025 | — |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| 4 | Insider transaction | Oct 29, 2025 | Oct 27, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 2, 2025 | — |
| 4 | Insider transaction | Sep 30, 2025 | Sep 8, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 17, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 18, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 18, 2025 |
| 144 | Notice of proposed sale | Sep 18, 2025 | — |
| 144 | Notice of proposed sale | Sep 18, 2025 | — |
| 144 | Notice of proposed sale | Sep 17, 2025 | — |
| 4 | Insider transaction | Sep 5, 2025 | Sep 3, 2025 |
| 144 | Notice of proposed sale | Sep 4, 2025 | — |
| 144 | Notice of proposed sale | Sep 3, 2025 | — |
| 4 | Insider transaction | Aug 26, 2025 | Aug 22, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 22, 2025 |
| 144 | Notice of proposed sale | Aug 25, 2025 | — |
| 144 | Notice of proposed sale | Aug 22, 2025 | — |
| 144 | Notice of proposed sale | Aug 22, 2025 | — |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Aug 14, 2025 | Aug 12, 2025 |
| 4 | Insider transaction | Jul 17, 2025 | Jul 15, 2025 |
| 144 | Notice of proposed sale | Jul 15, 2025 | — |
| 4 | Insider transaction | Jul 9, 2025 | Jul 7, 2025 |
| 144 | Notice of proposed sale | Jul 7, 2025 | — |
| 4 | Insider transaction | Jun 26, 2025 | Jun 24, 2025 |
| 144 | Notice of proposed sale | Jun 24, 2025 | — |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 144 | Notice of proposed sale | May 22, 2025 | — |
| 4 | Insider transaction | May 21, 2025 | Mar 15, 2025 |
| 3 | Initial insider ownership | May 21, 2025 | Mar 15, 2025 |
| 144 | Notice of proposed sale | May 21, 2025 | — |
| 4 | Insider transaction | May 16, 2025 | May 14, 2025 |
| 144 | Notice of proposed sale | May 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| 4 | Insider transaction | Mar 19, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 14, 2025 |
| 144 | Notice of proposed sale | Mar 17, 2025 | — |
| 4 | Insider transaction | Mar 14, 2025 | Mar 12, 2025 |
| 144 | Notice of proposed sale | Mar 14, 2025 | — |
| 4 | Insider transaction | Mar 13, 2025 | Mar 11, 2025 |
| 144 | Notice of proposed sale | Mar 13, 2025 | — |
| 4 | Insider transaction | Mar 12, 2025 | Mar 10, 2025 |
| 144 | Notice of proposed sale | Mar 12, 2025 | — |
| 144 | Notice of proposed sale | Mar 12, 2025 | — |
| 144 | Notice of proposed sale | Mar 11, 2025 | — |
| 144 | Notice of proposed sale | Mar 10, 2025 | — |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 4 | Insider transaction | Feb 10, 2025 | Feb 6, 2025 |
| 144 | Notice of proposed sale | Feb 6, 2025 | — |
| 144 | Notice of proposed sale | Feb 6, 2025 | — |
| 4 | Insider transaction | Dec 3, 2024 | Nov 29, 2024 |
| 4 | Insider transaction | Dec 3, 2024 | Nov 29, 2024 |
| 4 | Insider transaction | Nov 29, 2024 | Nov 26, 2024 |
| 144 | Notice of proposed sale | Nov 29, 2024 | — |
| 144 | Notice of proposed sale | Nov 29, 2024 | — |
| 4 | Insider transaction | Nov 26, 2024 | Nov 22, 2024 |
| 4 | Insider transaction | Nov 26, 2024 | Nov 22, 2024 |
| 144 | Notice of proposed sale | Nov 26, 2024 | — |
| 144 | Notice of proposed sale | Nov 22, 2024 | — |
| 144 | Notice of proposed sale | Nov 22, 2024 | — |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 8, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 29, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 22, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 8, 2024 | — |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 144 | Notice of proposed sale | Oct 4, 2024 | — |
| 144 | Notice of proposed sale | Oct 4, 2024 | — |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 1, 2024 |
| 144 | Notice of proposed sale | Oct 3, 2024 | — |
| 144 | Notice of proposed sale | Oct 2, 2024 | — |
| 144 | Notice of proposed sale | Oct 1, 2024 | — |
| 4 | Insider transaction | Sep 24, 2024 | Sep 21, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 144 | Notice of proposed sale | Aug 29, 2024 | — |
| 4 | Insider transaction | Aug 26, 2024 | Aug 22, 2024 |
| 144 | Notice of proposed sale | Aug 22, 2024 | — |
| 4 | Insider transaction | Aug 20, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 14, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jun 12, 2024 | Jun 10, 2024 |
| 144 | Notice of proposed sale | Jun 11, 2024 | — |
| 144 | Notice of proposed sale | Jun 10, 2024 | — |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 144 | Notice of proposed sale | Jun 7, 2024 | — |
| 144 | Notice of proposed sale | Jun 6, 2024 | — |
| 144 | Notice of proposed sale | Jun 6, 2024 | — |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| 4 | Insider transaction | May 31, 2024 | May 29, 2024 |
| 144 | Notice of proposed sale | May 29, 2024 | — |
| 144 | Notice of proposed sale | May 29, 2024 | — |
| 4 | Insider transaction | May 24, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 24, 2024 | May 22, 2024 |
| 144 | Notice of proposed sale | May 22, 2024 | — |
| 144 | Notice of proposed sale | May 22, 2024 | — |
| 4 | Insider transaction | May 16, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 16, 2024 | May 14, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 14, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 14, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 144 | Notice of proposed sale | Mar 14, 2024 | — |
| 144 | Notice of proposed sale | Mar 14, 2024 | — |
| 144 | Notice of proposed sale | Mar 14, 2024 | — |
| 144 | Notice of proposed sale | Mar 13, 2024 | — |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 144 | Notice of proposed sale | Mar 8, 2024 | — |
| 144 | Notice of proposed sale | Mar 8, 2024 | — |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 1, 2024 | Feb 28, 2024 |
| 4 | Insider transaction | Mar 1, 2024 | Feb 28, 2024 |
| 144 | Notice of proposed sale | Feb 28, 2024 | — |
| 144 | Notice of proposed sale | Feb 28, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jan 26, 2024 | — |
| 4 | Insider transaction | Jan 16, 2024 | Jan 12, 2024 |
| 144 | Notice of proposed sale | Jan 12, 2024 | — |
| 4 | Insider transaction | Dec 28, 2023 | Dec 26, 2023 |
| 4 | Insider transaction | Dec 28, 2023 | Dec 26, 2023 |
| 144 | Notice of proposed sale | Dec 26, 2023 | — |
| 144 | Notice of proposed sale | Dec 26, 2023 | — |
| 4 | Insider transaction | Dec 1, 2023 | Nov 29, 2023 |
| 4 | Insider transaction | Dec 1, 2023 | Nov 29, 2023 |
| 144 | Notice of proposed sale | Nov 29, 2023 | — |
| 144 | Notice of proposed sale | Nov 29, 2023 | — |
| 4 | Insider transaction | Nov 27, 2023 | Nov 22, 2023 |
| 4 | Insider transaction | Nov 27, 2023 | Nov 22, 2023 |
| 144 | Notice of proposed sale | Nov 22, 2023 | — |
| 144 | Notice of proposed sale | Nov 22, 2023 | — |
| 4 | Insider transaction | Nov 22, 2023 | Nov 20, 2023 |
| 144 | Notice of proposed sale | Nov 20, 2023 | — |
| 4 | Insider transaction | Nov 16, 2023 | Nov 14, 2023 |
| 4 | Insider transaction | Nov 16, 2023 | Nov 14, 2023 |
| 4 | Insider transaction | Nov 15, 2023 | Nov 13, 2023 |
| 144 | Notice of proposed sale | Nov 13, 2023 | — |
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Company profile
- Industry
- Special Industry Machinery, NEC (SIC 3559)
- Listed as
- ACMR (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- CA
- Headquarters
- Fremont, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1680062
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.