================================================================================ SECURITIES AND EXCHANGE COMMISSION UNITED STATES Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 3, 2003 ---------------- HENNESSY ADVISORS, INC. ----------------------- (Exact name of registrant as specified in its charter) California 000-49872 68-0176227 ---------- --------- ---------- (State or other jurisdiction Commission (IRS Employer of incorporation) File Number) Identification No.) 750 Grant Avenue, Suite 100 94945 Novato, California ----- (Address of principal executive offices) (Zip Code) Registrant's telephone number including area code: (415) 899-1555 -------------- Not Applicable -------------- (Former name or former address, if changed since last report) ================================================================================ Item 7. Financial Statements and Exhibits (c) Exhibits 99.1 Press Release dated December 3, 2003 Item 9. Regulation FD Disclosure On December 3, 2003, Hennessy Advisors, Inc. ("Hennessy") announced that it has surpassed $1 billion in assets under management in its five no-load Hennessy Funds. Additional information regarding Hennessy is provided in its press release dated December 3, 2003, attached hereto as Exhibit 99.1. 2 Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. HENNESSY ADVISORS, INC. (registrant) December 3, 2003 By: /s/ Teresa M. Nilsen ------------------------------------- Teresa M. Nilsen Chief Financial Officer and Executive Vice President 3