UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant	x
Filed by a Party other than the Registrant	¨

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

x    Definitive Additional Materials

¨      Soliciting Material under §240.14a-12

TILE SHOP HOLDINGS, INC.

(Name of Registrant as Specified In Its Charter)

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

Payment of Filing Fee (Check all boxes that apply):

x      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.

Your Vote Counts! TILE SHOP HOLDINGS, INC. 14000 CARLSON PARKWAY PLYMOUTH, MN 55441 TILE SHOP HOLDINGS, INC. 2023 Annual Meeting Vote by June 12, 2023 11:59 PM ET You invested in TILE SHOP HOLDINGS, 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 June 13, 2023. Vote Virtually at the Meeting* June 13, 2023 10:00 AM Central Time Virtually at: www.virtualshareholdermeeting.com/TTSH2023 *Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera here and vote without entering a control number V1.1 For complete information and to vote, visit www.ProxyVote.com Control # D95052-P85620 Get informed before you vote View the Notice, Proxy Statement and 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 30, 2023. 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.

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. Vote at www.ProxyVote.com Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Sign up for E-delivery”. Voting Items Board Recommends D95053-P85620 01) Peter H. Kamin 02) Mark J. Bonney 1. Election of Directors Nominees: 2. To ratify the appointment of Ernst & Young LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2023. 3. To approve, on a non-binding advisory basis, named executive officer compensation. NOTE: Proposal 1 is to elect Messrs. Kamin and Bonney to serve as Class II directors to hold office until the 2026 Annual Meeting of Stockholders. In their discretion, the proxies are authorized to vote upon such other matters as may properly come before the Annual Meeting of Stockholders and at any adjournment or postponement thereof. For For For