SILICON LABORATORIES INC

Evaluation of Disclosure Controls and Procedures

We have performed an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer (CEO) and Chief Financial Officer (CFO), of the effectiveness of our disclosure controls and procedures, as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934 (the Exchange Act). Based on that evaluation, our management, including our CEO and CFO, concluded that our disclosure controls and procedures were effective as of December 28, 2024 to provide reasonable assurance that information required to be disclosed by us in the reports filed or submitted by us under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Such disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed is accumulated and communicated to our management, including our CEO and CFO, to allow timely decisions regarding required disclosures.

Changes in Internal Control over Financial Reporting

There was no change in our internal controls during the fiscal quarter ended December 28, 2024 that materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting, other than the remediation efforts of the material weakness discussed below.

Remediation of Material Weakness in Internal Control over Financial Reporting

As previously disclosed in Item 9A. Controls and Procedures in our Annual Report on Form 10-K for the year ended December 30, 2023 filed with the SEC, our management, including our CEO and CFO, identified deficiencies in our internal control over financial reporting that we believe rose to the level of a material weakness. A material weakness is a deficiency, or a combination of deficiencies in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim consolidated financial statements will not be prevented or detected on a timely basis. This material weakness did not result in any material errors.

To address the material weakness related to undue reliance on forecasted inventory demand information used in determining inventory carrying value adjustments, we completed the following:

•Evaluated and reassessed the design of our inventory valuation methods, including key assumptions used in the determination of the net realizable value of our inventory;

•Designed and implemented enhanced controls and documentation requirements during the quarter ended December 28, 2024 that support the completeness and accuracy of data used in the inventory valuation assessment;

•Formalized management’s review and assessment of information used in the inventory valuation assessment; and

•Refined the critical assumptions to be used in the inventory valuation assessment, including demand forecast information, historical results, market conditions, and aging of inventory.

During the quarter ended December 28, 2024, we successfully completed the testing necessary to conclude that this material weakness has been remediated.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control system was designed to provide reasonable assurance to our management and Board of Directors regarding the preparation and fair presentation of published financial statements.

Our management assessed the effectiveness of our internal control over financial reporting as of December 28, 2024. In making this assessment, it used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control—Integrated Framework (2013 framework). Based on our assessment we concluded that, as of December 28, 2024, our internal control over financial reporting is effective based on those criteria.

Our independent registered public accounting firm, Ernst & Young LLP, issued an attestation report on our internal control over financial reporting. This report appears on page F-3.