SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

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☐	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

PCTEL, 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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Your Vote Counts! PCTEL, INC. 2021 Annual Meeting Vote by May 25, 2021 11 :59 PM ET PCTEL, INC. 471 BRIGHTON DRIVE BLOOMINGDALE, IL 601 08 You invested in PCTEL, INC. and it‘s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy material for the stockholder meeting to be held on May 26, 2021. Get informed before you vote View the Notice & Proxy Statement, Annual Report on Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 12, 2021. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. Smartphone users Vote Virtually at the Meeting* Point your camera here and May 26, 2021 11:00 AM CDT vote without entering a ~Inumber Virtually at: www.virtualshareholdermeeting.com/PCTI2021 *Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Voting Items Recommends 1. Election of Directors Nominees: 0 For 01) Cindy K. Andreotti 02) Cynthia A. Keith 2. Non-binding advisory vote to approve the Company’s named executive officer compensation. 0 For 3. Ratification of the appointment of Grant Thornton LLP as the Company’s independent registered public accounting O For firm for the fiscal year ending December 31, 2021. NOTE: Giving your proxy also means that you authorize the persons named as proxies to vote in their discretion on any other matter properly presented at the meeting or any postponement or adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Sign up forE-delivery”.