UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): June 7, 2021

SILICON LABORATORIES INC.

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code: (512) 416-8500

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Securities Exchange Act of 1934. ¨

Item 8.01 Other Events.

On June 7, 2021, the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Act”), expired in connection with the previously announced Asset Purchase Agreement, dated April 22, 2021 (the “Purchase Agreement”), between Skyworks Solutions, Inc., a Delaware corporation (“Buyer”), and Silicon Laboratories Inc., a Delaware corporation (the “Company”), pursuant to which Buyer has agreed to acquire certain assets, rights, and properties, and assume certain liabilities, comprising the Company’s infrastructure and automotive business (the “Asset Purchase”).

The expiration of the waiting period under the HSR Act satisfies one of the conditions to the closing of the Asset Purchase. The closing of the Asset Purchase remains subject to the satisfaction or waiver of the remaining conditions to the closing of the Asset Purchase set forth in the Purchase Agreement, including, among other things, the accuracy of representations and warranties, the material performance of covenants, and no occurrence of a material adverse effect.

Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements based on Silicon Laboratories’ current expectations. The words “believe,” “estimate,” “expect,” “intend,” “anticipate,” “plan,” “project,” “will” and similar phrases as they relate to Silicon Laboratories are intended to identify such forward-looking statements. These forward-looking statements reflect the current views and assumptions of Silicon Laboratories and are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. Among the factors that could cause actual results to differ materially from those in the forward-looking statements are the following: the occurrence of any event, change or other circumstance that could give rise to the termination of the Purchase Agreement; the failure to satisfy any of the conditions to the completion of the proposed transaction; the effect of the announcement of the proposed transaction on the ability of Silicon Laboratories to retain and hire key personnel and maintain relationships with its customers, suppliers, advertisers, partners and others with whom it does business, or on its operating results and businesses generally; risks associated with the disruption of management’s attention from ongoing business operations due to the proposed transaction; the ability to meet expectations regarding the timing and completion of the proposed transaction; and other factors that are detailed in the SEC filings of Silicon Laboratories Inc. Silicon Laboratories disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

SIGNATURE

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 hereunto duly authorized.