HENNESSY ADVISORS INC

Pursuant to the rules of the Exchange Act, services that deliver our communications to shareholders that hold their stock through a broker may deliver a single copy of our annual report on Form 10-K and proxy statement to multiple shareholders who share the same address unless one or more of such shareholders have provided contrary instructions. This procedure, referred to as householding, reduces the volume of duplicate materials shareholders receive and reduces mailing expenses. You may revoke your consent to future householding mailings or may enroll in householding by contacting your broker. If you would like to receive a separate copy of this proxy statement and our annual report on Form 10‑K for the fiscal year ended September 30, 2024, please submit a written request to our corporate secretary, Teresa M. Nilsen, at Hennessy Advisors, Inc., 7250 Redwood Boulevard, Suite 200, Novato, California 94945, or call 1‑800‑966‑4354, and we will promptly deliver them to you.