Expion Energy, Inc.

For the 2026 Annual Meeting of Stockholders

To be held Wednesday, November 4, 2026

This proxy statement (this “Proxy Statement”) is solicited on behalf of the board of directors (our “Board”) of Expion Energy, Inc., a Nevada corporation (the “Company,” “we,” “us,” or “ours”), for use at the annual meeting of stockholders (the “Annual Meeting”) to be held on Wednesday, November 4, 2026, at 9:00 a.m. Pacific Time, or at any continuation, postponement, or adjournment thereof. We recently changed our corporate name from “Expion360 Inc.” to “Expion Energy, Inc.” to better align with our expanded energy platform and operating strategy.

The Annual Meeting is being held for the purposes discussed in this Proxy Statement in the accompanying Notice of 2026 Annual Meeting of Stockholders (the “Notice”).