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Reconciliations to U.S. generally accepted accounting principles (“GAAP”) financial measures from non-GAAP financial measures are presented below under “Reconciliation of GAAP to Non-GAAP Financial Measures.” Non-GAAP financial measures exclude stock-based compensation and, with respect to net income attributable to ACM Research, Inc. and basic and diluted earnings per share, also exclude unrealized loss on short-term investments.

Outlook

ACM is maintaining its revenue guidance range of $650 million to $725 million for fiscal year 2024. This expectation is based on ACM management’s current assessment of the continuing impact from international trade policy, together with various expected spending scenarios of key customers, supply chain constraints, and the timing of acceptances for first tools under evaluation in the field, among other factors.

Operating Highlights and Recent Announcements

• Shipments. Total shipments in the first quarter of 2024 were $245 million, up 175% from the first quarter of 2023. Total shipments include deliveries for revenue in the quarter and deliveries of first tool systems awaiting customer acceptance for potential revenue in future quarters.
• Expanded Advanced Packaging Portfolio with Introduction of Frame Wafer Cleaning Tool. We introduced our Frame Wafer Cleaning Tool for advanced packaging. The tool effectively cleans semiconductor wafers during the post-debonding cleaning process. The Frame Wafer Cleaning Tool also includes an innovative solvent reclamation system that provides environmental and cost benefits. We have also successfully completed the installation and qualification of the first tool with a major Chinese manufacturer.

First Quarter 2024 Financial Summary

Unless otherwise noted, the following figures refer to the first quarter of 2024 and comparisons are with the first quarter of 2023.

• Revenue was $152.2 million, up 105.0%, reflecting higher sales of single wafer cleaning, Tahoe and semi-critical cleaning equipment and advanced packaging (excluding ECP), and services and spares.
• Gross margin was 52.0% versus 53.8%. Non-GAAP gross margin, which excludes stock-based compensation, was 52.5% versus 54.0%. Gross margin exceeded ACM’s long-term business model range of 40% to 45%. ACM expects gross margin to vary from period to period due to a variety of factors, such as product mix, currency impacts and sales volume.
• Operating expenses were $53.9 million, an increase of 73.1%. Operating expenses as a percentage of revenue decreased to 35.4% from 41.9%. Non-GAAP operating expenses, which exclude the effect of stock-based compensation, were $40.1 million, up 37.4%. Non-GAAP operating expenses as a percentage of revenue decreased to 26.3% from 39.3%.
• Operating income was $25.2 million, up from $8.9 million. Operating margin was 16.6% versus 11.9%. Non-GAAP operating income, which excludes the effect of stock-based compensation, was $39.8 million, up from $10.9 million. Non-GAAP operating margin, which excludes stock-based compensation, was 26.2% versus 14.7%.
• Unrealized loss on short-term investments was $2.6 million. The loss reflects the change in market value of the investments by ACM’s principal operating subsidiary, ACM Research (Shanghai), Inc., in short-term investments. The value is marked-to-market quarterly and is excluded in the non-GAAP financial metrics.
• Income tax expense was $4.4 million, compared to $2.9 million.
• Net income attributable to ACM Research, Inc. was $17.4 million, up from $7.1 million. Non-GAAP net income attributable to ACM Research, Inc., which excludes the effect of stock-based compensation and unrealized loss on short-term investments, was $34.6 million, up from $9.9 million.
• Net income per diluted share attributable to ACM Research, Inc. was $0.26, compared to $0.11. Non-GAAP net income per diluted share, which excludes the effect of stock-based compensation and unrealized loss on short-term investments, was $0.52, up from $0.15.
• Cash and cash equivalents, plus restricted cash and short-term and long-term time deposits were $288.3 million at March 31, 2024, versus $304.5 million at December 31, 2023.
  

Conference Call Details

A conference call to discuss results will be held on Wednesday, May 8, 2024, at 8:00 a.m. Eastern Time (8:00 p.m. China Time). To join the conference call via telephone, participants must use the following link to complete an online registration process. Upon registering, each participant will receive email instructions to access the conference call, including dial-in information and a PIN number allowing access to the conference call. This pre-registration process is designed by the operator to reduce delays due to operator congestion when accessing the live call.

Online Registration: https://register.vevent.com/register/BI7d8a11ab6f694bde910596cd97b8276d

Participants who have not pre-registered may join the webcast by accessing the link at ir.acmrcsh.com/events.

A live and archived webcast will be available on the Investors section of the ACM website at www.acmrcsh.com.

Use of Non-GAAP Financial Measures

ACM presents non-GAAP gross margin, operating expenses, operating income, net income attributable to ACM Research, Inc. and basic and diluted earnings per share as supplemental measures to GAAP financial measures regarding ACM’s operational performance. These supplemental measures exclude the impact of stock-based compensation, which ACM does not believe is indicative of its core operating results. In addition, non-GAAP net income attributable to ACM Research, Inc. and basic and diluted earnings per share exclude the effect of stock-based compensation and unrealized loss on short-term investments, which ACM also believes are not indicative of its core operating results. A reconciliation of each non-GAAP financial measure to the most directly comparable GAAP financial measure is provided below under “Reconciliation of GAAP to non-GAAP Financial Measures.”

ACM believes these non-GAAP financial measures are useful to investors in assessing its operating performance. ACM uses these financial measures internally to evaluate its operating performance and for planning and forecasting of future periods. Financial analysts may focus on and publish both historical results and future projections based on the non-GAAP financial measures. ACM also believes it is in the best interests of investors for ACM to provide this non-GAAP information.

While ACM believes these non-GAAP financial measures provide useful supplemental information to investors, there are limitations associated with the use of these non-GAAP financial measures. These non-GAAP financial measures may not be reported by competitors, and they may not be directly comparable to similarly titled measures of other companies due to differences in calculation methodologies. The non-GAAP financial measures are not an alternative to GAAP information and are not meant to be considered in isolation or as a substitute for comparable GAAP financial measures. They should be used only as a supplement to GAAP information and should be considered only in conjunction with ACM’s consolidated financial statements prepared in accordance with GAAP.

Forward-Looking Statements

Certain statements contained in this press release are not historical facts and may be forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “plans,” “expects,” “believes,” “anticipates,” “designed,” and similar words are intended to identify forward-looking statements. Forward-looking statements are based on ACM management’s current expectations and beliefs, and involve a number of risks and uncertainties that are difficult to predict and that could cause actual results to differ materially from those stated or implied by the forward-looking statements. A description of certain of these risks, uncertainties and other matters can be found in filings ACM makes with the U.S. Securities and Exchange Commission, all of which are available at www.sec.gov. Because forward-looking statements involve risks and uncertainties, actual results and events may differ materially from results and events currently expected by ACM. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. ACM undertakes no obligation to publicly update these forward-looking statements to reflect events or circumstances that occur after the date hereof or to reflect any change in its expectations with regard to these forward-looking statements or the occurrence of unanticipated events.