MNTN, Inc.

Your vote is important. Voting your shares will ensure the presence of a quorum at the Annual Meeting and will save the Company the expense of further solicitation. Stockholders are encouraged to attend, participate in and vote at the virtual Annual Meeting via the live webcast. Whether or not you plan to attend the virtual Annual Meeting, your vote is important. Please promptly complete and return your signed proxy card in the enclosed envelope or submit your proxy by telephone or via the Internet as described on your proxy card or voting instruction form. As described in the 2026 Proxy Statement (the “Proxy Statement”), you may also vote electronically at the virtual Annual Meeting if you attend and participate in the virtual Annual Meeting.