ACM Research — Third Quarter 2026 Earnings Summary

Financial Performance:

• Preliminary unaudited revenue for Q3 2026 is expected to range between $360 million and $365 million.
• This revenue range represents a year-over-year growth of 34% to 36%.
• Preliminary total shipments for Q3 2026 are expected to range between $335 million and $340 million.
• Total shipments represent a year-over-year growth of 27% to 29%.
• As of June 30, 2026, ACM held a 73.2% equity interest in ACM Research (Shanghai), Inc.
• A substantial majority of ACM's consolidated revenue and net income is contributed by ACM Shanghai.
• ACM Shanghai reports stand-alone financial results in RMB under Chinese GAAP, which may differ materially from ACM's consolidated results reported in U.S. dollars under U.S. GAAP.

Guidance and Future Outlook:

• Full financial results for Q3 2026 and the revenue outlook for the remainder of the year will be discussed on an earnings call scheduled for November 5, 2026, at 8 a.m. Eastern Time.
• Actual unaudited Q3 2026 results are subject to the completion of quarter-end closing procedures and review by ACM's independent registered public accounting firm.

Business Segments and Product Lines:

• ACM provides semiconductor process equipment spanning cleaning, electroplating, stress-free polishing, vertical furnace processes, track, PECVD, and wafer- and panel-level packaging tools.
• The company focuses on enabling advanced and semi-critical semiconductor device manufacturing.
• ACM delivers customized, high-performance, cost-effective process solutions designed to improve productivity and product yield for semiconductor manufacturers.

Other Key Points:

• This preliminary announcement coincides with the scheduled release of unaudited financial results by ACM Research (Shanghai), Inc. to the Shanghai Stock Exchange website.
• Investor and media inquiries are handled by The Blueshirt Group in the United States and The Blueshirt Group Asia in China.