SILICON LABORATORIES INC. 10-Q

Item 5. Other Information Rule 10b5-1 Trading Arrangements The following table describes contracts, instructions, or written plans for the purchase or sale of our securities by our directors and officers (as defined under Rule 16b-1(f) of the Exchange Act) intended to satisfy the affirmative defense conditions of Rule 10b5-1(c), entered into during the quarter ended October 4, 2025. There were no non-Rule 10b5-1 trading arrangements entered into or terminated during the quarter ended October 4, 2025. Name and Title of Director or Officer Date of Adoption of Arrangement Duration of the Arrangement Aggregate Number of Securities to be Purchased or Sold Pursuant to the Arrangement Brandon Tolany Senior VP, Worldwide Sales, Marketing & Applications August 29, 2025 Expires September 1, 2026 16,200 Nina Richardson Director August 6, 2025 Expires August 17, 2026 1,355 40 Table of Contents Item 6. Exhibits The following exhibits are filed as part of this report: Exhibit Number 3.1* Fifth Amended and Restated Certificate of Incorporation (filed as Exhibit 3.1 to the Form 10-Q filed on August 5, 2025). 3.2* Sixth Amended and Restated Bylaws of Silicon Laboratories Inc. (filed as Exhibit 3.1 to the Form 8-K filed on April 21, 2023). 4.1* Specimen certificate for shares of common stock (filed as Exhibit 4.1 to the IPO Registration Statement). 31.1 Certification of the Principal Executive Officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002. 31.2 Certification of the Principal Financial Officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002. 32.1** Certification as required by Section 906 of the Sarbanes-Oxley Act of 2002. 101.INS Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document 101.SCH Inline XBRL Taxonomy Extension Schema Document 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) ______________________________________________ * Incorporated herein by reference to the indicated filing. ** Furnished herewith. 41 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. SILICON LABORATORIES INC. November 4, 2025 /s/ R. Matthew Johnson Date R. Matthew Johnson President and Chief Executive Officer (Principal Executive Officer) November 4, 2025 /s/ Dean Butler Date Dean Butler Senior Vice President and Chief Financial Officer (Principal Financial Officer) November 4, 2025 /s/ Mark D. Mauldin Date Mark D. Mauldin Chief Accounting Officer (Principal Accounting Officer) 42