UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.    )

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Check the appropriate box:

☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to §240.14a-12

Silicon Laboratories Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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☒	No fee required.
☐	Fee paid previously with preliminary materials.
☐	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

P.O. BOX 8016, CARY, NC 27512-9903 Silicon Laboratories Inc. Important Notice Regarding the Availability of Proxy Materials Stockholders Meeting to be Held on April 18, 2024 For Stockholders 23, of Record as of February 2024 This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting. To meeting, view the go proxy to: www. materials, proxydocs. andcom/SLAB. to obtain directions to attend the To vote your proxy while visiting this site, you will need the 12 digit control number in the box below. Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the internet. For a convenient way to view proxy materials and VOTE go to www.proxydocs.com/SLAB Have the 12 digit control number located in the shaded box above available when you access the website and follow the instructions. If you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year’s meeting, you must make this request on or before April 8, 2024. To order paper materials, use one of the following methods. INTERNET TELEPHONE * E-MAIL www.investorelections.com/SLAB (866) 648-8133 paper@investorelections.com When requesting proxy material via the Internet or telephone, you will need the 12 digit control number located in the shaded box above. * If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located above) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. Silicon Laboratories Inc. Meeting Materials: Notice of Meeting, Proxy Statement & Annual Report Meeting Type: Annual Meeting of Stockholders Date: Thursday, April 18, 2024 Time: 9:00 AM, Central Daylight Time Place: Annual Meeting to be held live via the Internet Please visit www.proxydocs.com/SLAB for more details You must register to attend the meeting online and/or participate at www.proxydocs.com/SLAB. SEE REVERSE FOR FULL AGENDA

Silicon Laboratories Inc. Annual Meeting of Stockholders THE BOARD OF DIRECTORS RECOMMENDS A VOTE: FOR the election of the director nominees in Proposal 1 and FOR Proposals 2 and 3. 1. To elect three Class II directors to serve on the Board of Directors until our 2027 annual meeting of stockholders, or until a successor is duly elected and qualified; 1.01 Matt Johnson 1.02 Sumit Sadana 1.03 Gregg Lowe 2. To ratify the appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 28, 2024; 3. To vote on an advisory (non-binding) resolution to approve executive compensation; and 4. To transact such other business as may properly come before the meeting or any adjournment or adjournments thereof. NOTE: In accordance with the discretion of the proxy holders, to act upon all matters incident to the conduct of the meeting and upon other matters as they may properly come before the meeting.