MNTN, Inc.

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On September 3, 2026, the Board of Directors (the “Board”) of MNTN, Inc. (the “Company”) elected Michael J. Katz as a Class II director, effective as of such date, to serve until the Company’s 2027 annual meeting of stockholders or until his successor is duly elected and qualified. Mr. Katz, 48, currently serves as a strategic advisor to T-Mobile US, Inc. (“T-Mobile”), after serving as its Chief Business & Product Officer from December 2025 to July 2026. In that role, Mr. Katz led teams across marketing, strategy, product, brand and communications, along with the enterprise technology, data and AI organizations that power every customer interaction across T-Mobile. Mr. Katz has served in various other leadership roles across his nearly three-decade career at T-Mobile, including as T-Mobile’s President, Marketing, Strategy and Products from October 2023 to December 2025; President, Marketing Innovation and Experience from December 2022 to October 2023; Chief Marketing Officer from June 2022 to December 2022; President, T-Mobile Business Group from September 2021 to March 2022; and Executive Vice President, T-Mobile for Business from 2016 to September 2021. Mr. Katz has been recognized by Forbes as one of the 50 most influential chief marketing officers multiple times, reflecting his impact in building customer-first brands and businesses. He currently serves on the board of Swedish Health Services and is a member of the Colorado State University College of Business Global Leadership Council. Mr. Katz holds a Bachelor of Arts from Colorado State University. Mr. Katz is eligible to participate in the Company’s Non-Employee Director Compensation Program (the “Program”), the terms of which are described in the Company’s definitive proxy statement filed with the Securities and Exchange Commission on April 30, 2026. The Company expects to enter into its standard form of indemnification agreement with Mr. Katz. There is no arrangement or understanding between Mr. Katz and any other persons pursuant to which Mr. Katz was selected as a director and he has no direct or indirect material interest in any transaction required to be disclosed pursuant to Item 404(a) of Regulation S-K. There are no family relationships between Mr. Katz and any other director or executive officer of the Company.