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”). As a result of the material weakness in our internal control over financial reporting described 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, concluded that our disclosure controls and procedures were not effective as of June 29, 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.

Changes in Internal Control over Financial Reporting

There was no change in our internal controls during the fiscal quarter ended June 29, 2024 that materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting, with the exception of ongoing remediation efforts of the aforementioned material weakness.

Remediation

We have taken and are currently taking certain measures to remediate the aforementioned material weakness, including 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 June 29, 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 and continuing to refine the critical assumptions to be used in the inventory valuation assessment, including demand forecast information, historical results, market conditions, and aging of inventory.

Management believes that the outlined plans will effectively address the deficiency constituting the material weakness, with the remediation efforts, including necessary testing, anticipated to conclude by the end of 2024. However, the exact timing of completion cannot be guaranteed. As the remediation progresses, management may enact additional measures or refine elements of the remediation plan described above as deemed necessary.