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AXCELIS TECHNOLOGIES INC

For the period ended Dec 31, 2024. Filed Feb 28, 2025.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2024 · Filed Feb 28, 2025

ACLS$106.79-0.8%Stored close · as of Nov 10, 2026

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Contents

Item 8. Report of Independent Registered Public Accounting Firm

To the Stockholders and the Board of Directors of Axcelis Technologies, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Axcelis Technologies, Inc. (the Company) as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive income, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2024, and the related notes and financial statement schedule listed in the Index at Item 15(a) (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 27, 2025 expressed an unqualified opinion thereon.

Adoption of ASU 2023-07 Segment Reporting (Topic 280)

As discussed in Note 2 to the consolidated financial statements, the Company changed its segment disclosures in 2024 and 2023 due to the adoption of ASU No. 2023-07, Segment Reporting.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

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​​Systems Revenue recognition ​
Description of the Matter​As discussed in Note 2 and Note 3 to the consolidated financial statements, the Company generates revenue from the sale of ion implantation and other processing equipment used in the manufacture of semiconductor chips (“systems revenue”). The Company’s revenue contracts for systems have multiple performance obligations, including the systems themselves and obligations that are not delivered simultaneously with the systems. Systems revenue accounted for $782.6 million of the Company’s total revenue of $1.0 billion in 2024.​
Auditing management’s recognition of revenue was challenging because of the higher extent of audit effort and because the amounts are material to the consolidated financial statements and related disclosures. During our risk assessment process, we identified a higher inherent risk related to revenue primarily due to the size of the account, as well as the focus on revenue from readers of the financial statements.​
How We Addressed the Matter in Our Audit​We obtained an understanding, evaluated the design and tested the operating effectiveness of controls over the Company’s systems revenue recognition process, including controls designed to mitigate the risk of override of controls. This included testing controls over management’s review of manual journal entries and revenue related account reconciliations. ​To test systems revenue recognition, we reconciled revenue recognized to the Company’s general ledger to test completeness and performed substantive test of details over significant transactions deemed to be key items and a representative sample of the remaining transactions. For example, we selected and read a sample of arrangements to evaluate the completeness of the promised products and services and the related revenue recognized. We also confirmed directly with certain of the Company’s customers the terms of the selected system revenue arrangements. ​
​​Estimate of Excess Inventory​
Description of the Matter​The Company’s inventories totaled $282.2 million, net, as of December 31, 2024. As described in Note 2 and Note 6 to the consolidated financial statements, the Company records a provision for estimated excess inventory. Management determines the provision using its assumptions of future materials usage, based on estimates of demand and market conditions.​Auditing the Company’s provision for excess inventory is complex due to the highly judgmental nature of the factors used to estimate demand and market conditions. Specifically, the Company’s estimated materials usage may be significantly affected by management’s assumptions of forecasted system sales and the size and utilization of the installed base of systems. Management’s identification and measurement of these factors are forward looking and could be affected by future economic and market conditions that could have a significant effect on the excess inventory reserve.​
How We Addressed the Matter in Our Audit​We obtained an understanding, evaluated the design, and tested the operating effectiveness of internal controls, including management review controls, over the Company’s excess inventory reserve estimation process. This included management’s assessment of the assumptions and data underlying the excess inventory provision. For example, we tested controls over management’s review of its systems sales forecasts, as well as management’s review of the assumptions relating to the market size and utilization of installed systems. We also tested management’s controls over the completeness and accuracy of the data used in the estimation model. ​Our substantive audit procedures included, among others, evaluating the significant assumptions stated above and testing the accuracy and completeness of the underlying data used by management to compute the value of excess inventory. For example, we compared the quantities of on-hand inventories to historical and forecasted materials usage and evaluated adjustments to forecasts for specific product considerations, such as technological changes or alternative uses. We also assessed the historical accuracy of management’s estimates and performed sensitivity analyses over the significant assumptions to evaluate the changes in the excess inventory estimates that would result from changes in the underlying assumptions.​

/s/Ernst & Young LLP

We have served as the Company’s auditor since 1999.

Boston, Massachusetts

February 27, 2025

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