ACM Research, Inc. filings document the company’s semiconductor process-equipment business, reported operating results, governance matters, and capital-structure events tied to its U.S.-listed parent company and ACM Research (Shanghai), Inc. Forms 8-K furnish quarterly and annual results releases, preliminary revenue and shipment disclosures, subsidiary public-market announcements, and completed changes in ACM’s ownership interest in ACM Shanghai.
Proxy filings cover annual meeting proposals, including director elections and auditor ratification. The filing record also includes disclosures on ACM Shanghai’s STAR Market listing context, shareholder voting matters, material-event reporting, and related governance and ownership information for the company’s operating structure.
Research, Inc., through its controlling subsidiary ACMR US, completed an inquiry-based sale of 4,801,648 shares of Research (Shanghai), Inc. at RMB 160.00 (approximately $23.05) per share to 30 institutional investors.
After this transaction, the aggregate ownership of ACMR US and its concert parties in Shanghai decreased from 74.84% to 73.72%, a 1.00% reduction of Shanghai’s total share capital. Shanghai states there are no undisclosed operational risks or other material matters under applicable STAR Market listing rules, and the change does not alter its controlling shareholder or actual controller.
ACM Research, Inc. reported that shares of its operating subsidiary, Research (Shanghai), Inc. are listed on the Sci-Tech innovation board (the STAR Market) of the Shanghai Stock Exchange. In line with STAR Market rules, the Shanghai subsidiary filed a Record of January 2026 Investor Relations Activity with the exchange.
The Shanghai Stock Exchange posted this investor relations record on January 29, 2026, and ACM Research furnished an unofficial English translation as Exhibit 99.1. The company emphasized that this information is being furnished, not filed, and is not incorporated by reference into its Securities Act filings.
ACM Research, Inc. announced that its operating subsidiary, Research (Shanghai), Inc., has set a preliminary transfer price for a planned sale of 4,801,648 shares on the Shanghai Stock Exchange through an inquiry-based share transfer plan.
The preliminarily determined price is RMB 160.00 (approximately $23.05) per share, based on quotations from 38 institutional investors. The actual number of shares sold, sale prices, and aggregate proceeds may vary and are subject to market conditions, completion of settlement procedures in China, and other listed risks.
The Vanguard Group filed an amended Schedule 13G reporting beneficial ownership of 4,972,103 shares of Research Inc common stock, representing 8.3% of the class as of the event date of 12/31/2025.
Vanguard reports no sole voting or dispositive power, with 408,800 shares subject to shared voting power and all 4,972,103 shares subject to shared dispositive power. Vanguard states the securities are held in the ordinary course of business and not for the purpose of changing or influencing control. The filing also notes an internal realignment effective 01/12/2026, after which certain Vanguard subsidiaries are expected to report beneficial ownership separately while pursuing the same investment strategies.
Research, Inc. reported that its operating subsidiary, Research (Shanghai), Inc., has notified the Shanghai Stock Exchange that the company intends to sell 4,801,648 shares of the Shanghai subsidiary through an inquiry-based transfer plan. These shares represent about 1.34% of Research, Inc.’s ownership in the subsidiary and about 1% of the subsidiary’s total shares outstanding, each as of January 30, 2026. The company plans to use any sale proceeds for general corporate purposes, and notes that the actual number of shares sold and proceeds received will depend on market conditions and other factors.
ACM Research, Inc. filed a current report to note that it has updated its 2025 revenue outlook and provided an initial revenue outlook for 2026. This update was communicated in a press release titled “ACM Research Updates 2025 Revenue Outlook and Provides Initial Outlook for 2026 Revenue,” which is included as an exhibit to the filing and incorporated by reference.
The report classifies this disclosure under results of operations and financial condition, signaling that management is sharing revised expectations for how the business may perform. The press release is furnished rather than filed, which affects how it is treated under securities law but not its informational value for understanding the company’s forward-looking views.
ACM Research, Inc. (ACMR) reported that its operating subsidiary, ACM Research (Shanghai), Inc., which is listed on the STAR Market of the Shanghai Stock Exchange, filed a Record of November 2025 Investor Relations Activity with the Shanghai Stock Exchange. The exchange posted this record on November 19, 2025, and ACM has attached an unofficial English translation as Exhibit 99.1.
The company specifies that this information, including Exhibit 99.1, is being furnished rather than filed, meaning it is not subject to certain liability provisions of the U.S. securities laws and is not automatically incorporated by reference into other ACM Research filings.
ACM Research (ACMR) director Haiping Dun filed a Form 4 reporting a charitable-style transfer. On 11/12/2025, he made a gift of 755,090 shares of Class A common stock (transaction code G) at $0 to the Haiping Dun & Chi-Pin H Dun Revocable Trust, where he serves as co‑trustee and immediate family members are beneficiaries.
Following the transaction, reported holdings shifted to 0 shares direct and 755,090 shares indirect via the trust. This filing reflects a change in form of ownership, not an open-market sale.
ACM Research (ACMR): insider Form 4 shows option exercises and sales. An officer reported exercising 15,000 stock options at $5.60 on 11/12/2025 and another 15,000 at $5.60 on 11/13/2025. On the same dates, 15,000 shares were sold at $32.76 and 15,000 shares at $33.77, respectively.
The sales were made under a Rule 10b5-1 trading plan adopted on 08/13/2025. Following each day’s transactions, the filing lists 50,001 shares beneficially owned directly. The exercised options were fully vested and carry an expiration date of 04/22/2029.
ACM Research (ACMR) filed its Q3 2025 10‑Q, reporting stronger results. Revenue was $269,160 for the quarter versus $203,976 a year ago, with diluted EPS of $0.52. For the nine months, revenue reached $656,879 and diluted EPS was $1.26. Net income attributable to ACM Research, Inc. was $35,889 in Q3.
Gross profit was $113,149 on cost of revenue of $156,011. Operating expenses rose to $84,226, led by higher R&D and SG&A. Cash and cash equivalents were $1,058,909 as of September 30, 2025. Operating cash flow for the nine months was $(44,244), while financing activities provided $738,115, including $622,964 of net proceeds from an issuance of shares by ACM Shanghai.
In September 2025, ACM Shanghai issued 38.6 million ordinary shares in a private offering, lowering ACM Research’s interest in ACM Shanghai from 81.1% to 74.6% at September 30, 2025. Shares outstanding were 59,854,640 Class A and 5,021,811 Class B as of November 3, 2025.