Material Event (Form 8-K)

Expion360 Inc. (the "Company") confirms it has regained compliance with Nasdaq Listing Rule 5550(b)(1) (the "Equity Rule"). As a result, the Company's common stock, par value $0.001 per share (the "Common Stock"), continues to be listed and traded on The Nasdaq Capital Market.

As previously disclosed, on August 20, 2025, the Company received a notification letter from the Nasdaq Listing Qualifications department of The Nasdaq Stock Market ("Nasdaq") stating that the stockholders' equity balance reported in the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2025 filed with the Securities and Exchange Commission on August 13, 2025 was below the $2.5 million required minimum for continued listing on the Nasdaq Capital Market under the Equity Rule.

Following the Company's reduction of the exercise price of certain outstanding warrants in August 2025 in exchange for the prompt exercise of such warrants by the warrant holders for cash, the Company's stockholders' equity balance increased above the required threshold. On September 17, 2025, the Company received a letter from the Nasdaq Listing Qualifications department confirming the Company's regained compliance with the Equity Rule and that the Company was therefore in compliance with Nasdaq's listing requirements.