ROKU INC

To the Stockholders and the Board of Directors of Roku, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Roku, Inc. and subsidiaries (the "Company") as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive loss, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2024, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of 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 accounting principles generally accepted in the United States of America.

We have also 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 (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 14, 2025, expressed an unqualified opinion on the Company's internal control over financial 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 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) 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 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.

Revenue Recognition - Variable Consideration Determination of Streaming Services Distribution – Refer to Note 2 to the financial statements

Critical Audit Matter Description

As part of the Company’s revenue recognition for its arrangements with content partners, management is required to estimate variable consideration from revenue sharing related to streaming services distribution.

Variable consideration related to streaming services distribution (“content partner arrangements”) is included in the estimated transaction price based on the expected value for which a significant reversal of revenue is not expected to occur. For streaming services distribution, the estimate of the variable consideration is based on management’s assessment of historical, current, and forecasted performance of the partner’s applications.

We identified the forecasts of variable consideration relating to streaming services distribution as a critical audit matter due to the significant judgment necessary to estimate variable consideration. Such estimates required a high degree of auditor judgment and an increased extent of effort relative to evaluating the reasonableness of management’s estimates and assumptions related to the forecasts of variable consideration.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management’s forecast used in the determination of future variable consideration included the following, among others:

•We tested the design and operating effectiveness of controls over management’s forecasting process related to streaming services distribution.

•We selected a sample of revenue arrangements with variable consideration and performed the following:

◦Obtained contractual documents for each selection, including master agreements and other related documents.

◦Analyzed the contractual documents to determine if all arrangement terms that may have an impact on revenue recognition were identified and properly considered in the evaluation of the accounting for the contract, including terms and conditions for revenue sharing.

◦Performed inquiries with applicable individuals in the Company’s finance, operations, and sales departments regarding the estimates for variable consideration for streaming services distribution.

◦Tested management’s accuracy of forecasting by comparing the historical forecasts of consideration to actual consideration received.

◦Evaluated changes from prior period forecasts to current period forecasts, when applicable.

◦Tested the mathematical accuracy of the compilation of the forecasts.

◦We considered the existence of contradictory evidence based on reading of internal communication to management, Company press releases, industry reports, publicly available information related to partners’ content application as well as our observations and inquiries as to the changes within the business and considerations of macro-economic and industry factors.

/s/DELOITTE & TOUCHE LLP

San Jose, California

February 14, 2025

We have served as the Company's auditor since 2008.