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Preliminary Proxy Statement

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Soliciting Material Under §240.14a-12

SPORTSMAN’S WAREHOUSE HOLDINGS, INC. 

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Shareowner Services P.O. Box 64945 St. Paul, MN 55164-0945 Sportsman’s Warehouse Holdings, Inc. ANNUAL MEETING OF STOCKHOLDERS Wednesday, May 23, 2018 8:00 am Mountain Time Sportsman’s Warehouse Holdings, Inc. 7035 South High Tech Drive Midvale, UT 84047 Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to be Held on May 23, 2018. Notice is hereby given that the Annual Meeting of Stockholders of Sportsman’s Warehouse Holdings, Inc. will be held at Sportsman’s Warehouse Holdings, Inc., 7035 South High Tech Drive, Midvale, UT 84047 on Wednesday, May 23, 2018 at 8:00 am Mountain Time. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement and 2017 Annual Report are available at investors.sportsmanswarehouse.com If you want to receive a paper copy or an e-mail with links to the electronic materials, you must request one. There is no charge to you for requesting a copy. Please make your request for a copy as instructed on the reverse side of this notice on or before May 4, 2018 to facilitate timely delivery. Matters intended to be acted upon at the meeting are listed below. The Board of Directors recommends that you vote FOR ALL of the nominees in proposal 1 and FOR proposal 2: 1. Election of Directors NOMINEES: 01 Joseph Schneider 02 Christopher Eastland 2. Ratification of the appointment of KPMG LLP as the Company’s independent registered public accounting firm for fiscal 2018. Note: At their discretion, the proxies are authorized to vote upon such other business as may properly come before the meeting or any adjournment or postponement thereof. THIS IS NOT A FORM FOR VOTING • INTERNET/MOBILE – You may use the Internet to vote your proxy 24 hours a day, 7 days a week, until 11:59 p.m. (CT) on May 22, 2018, at www.proxypush.com/spwh . Please have this Notice and the last four digits of your Social Security Number or Tax Identification Number available. Follow the instructions to vote your proxy. Scan code to the right for mobile voting. TELEPHONE – To vote by telephone, please call 1-866-883-3382 to vote your proxy 24 hours a day, 7 days a week, until 11:59 p.m. (CT) on May 22, 2018. MAIL – You may request a proxy card by following the instructions on the reverse side of this notice. IN PERSON – You may vote your shares in person by attending the Annual Meeting. • • • • Your Internet vote and voting by telephone authorizes the named proxies to vote your shares in the same manner as if you marked, signed and returned your proxy card.

To request paper copies of the proxy materials, which include the proxy card, proxy statement and annual report, please contact us via: Internet/Mobile – Access the Internet and go to www.investorelections.com/spwh . Follow the instructions to log in, and order copies. Q 1i Telephone – Call us free of charge at 1-866-870-3684 in the U.S. or Canada, using a touch-tone phone, and follow the instructions to log in and order copies. Email – Send us an email at paper@investorelections.com with “SPWH Materials Request” in the subject line. The email must include: 12 • • • • The 11-digit control # located in the box in the upper right hand corner on the front of this notice. Your preference to receive printed materials via mail -or-to receive an email with links to the electronic materials. If you choose email delivery you must include the email address. If you would like this election to apply to delivery of material for all future meetings, write the word “Permanent” and include the last 4 digits of your Tax ID number in the email. Important Information about the Notice of Proxy Materials This Notice Regarding the Online Availability of Proxy Materials (Notice) is provided to stockholders in place of the printed materials for the upcoming Stockholder Meeting. Information about the Notice: In 2007, the Securities and Exchange Commission adopted a voluntary rule permitting Internet-based delivery of proxy materials. Companies can now send Notices, rather than printed proxy materials to shareholders. This may help lower mailing, printing and storage costs for the company, while minimizing environmental impact. This Notice contains specific information regarding the meeting, proposals and the internet site where the proxy materials may be found. To view the proxy materials online: Please refer to the instructions in this Notice on how to access and view the proxy materials online, including the proxy card, annual report and proxy statement. To receive paper copies of the proxy materials: Please refer to the instructions in this Notice on how to request hard copies of proxy materials via phone, email or Internet.