ILLUMINA, INC.
For the period ended Dec 28, 2025. Filed Feb 12, 2026.
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FY2025 · Filed Feb 12, 2026
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Report of Independent Registered Public Accounting Firm
To the Stockholders and the Board of Directors of Illumina, Inc.
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Illumina, Inc. (the Company) as of December 28, 2025 and December 29, 2024, the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity and cash flows for each of the three years in the period ended December 28, 2025, and the related notes (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 28, 2025 and December 29, 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 28, 2025, 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 28, 2025, 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 11, 2026 expressed an unqualified opinion thereon.
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 Matter
The critical audit matter communicated below is a matter arising from the current period audit of the financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of the critical audit matter 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 matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.
| Valuation of Excess and Obsolete Inventory | |
|---|---|
| Description of the Matter | The Company's inventories totaled $564 million as of December 28, 2025. As explained in Note 1 and Note 7 to the consolidated financial statements, the Company assesses the valuation of inventory each reporting period. Obsolete inventory or inventory in excess of management's estimated usage requirement is written down to its estimated net realizable value if those balances are determined to be less than cost.Auditing management's estimates for excess and obsolete inventory involved subjective auditor judgment because the estimates rely on a number of factors that are affected by market and economic conditions. In particular, the excess and obsolete inventory calculations are subject to potential significant changes in assumptions about future demand, market conditions, and the release of new products that may supersede old ones. |
| How We Addressed the Matter in Our Audit | We obtained an understanding, evaluated and tested the design and operating effectiveness of internal controls over the Company's excess and obsolete inventory valuation process, including management's assessment of the assumptions stated above and manual input and analysis of certain data underlying the excess and obsolete inventory valuation. Our audit procedures included, among others, evaluating the significant assumptions stated above and the accuracy and completeness of the underlying manual inputs provided by supply chain and operations management personnel used to value excess and obsolete inventory. We compared the balance of on-hand inventories to usage forecasts and historical usage and evaluated whether adjustments to forecasted usage were required for specific product considerations, such as new product introductions, 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 and obsolete inventory estimates that would result from changes in the underlying assumptions. |
/s/Ernst & Young LLP
We have served as the Company’s auditor since 2000.
San Diego, California
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