SEC FORM 13F-HR/A

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	July 31, 2015
Estimated average burden
hours per response:		23.8

Report for the Calendar Year or Quarter Ended:

12-31-2023

Check here if Amendment	X	Amendment Number:	1
This Amendment (Check only one.):		is a restatement.
	X	adds new holdings entries.

Institutional Investment Manager Filing this Report:
Name:	HENNESSY ADVISORS INC
Address:	7250 REDWOOD BLVD.
	SUITE 200
	NOVATO, CA 94945
Form 13F File Number:	028-06715

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name:	Teresa M. Nilsen
Title:	President and Chief Operating Officer
Phone:	415-899-1555
Signature, Place, and Date of Signing:
/s/ Teresa M. Nilsen		Novato, CA	03-14-2024
[Signature]		[City, State]	[Date]

Report Type (Check only one.):
X	13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
	13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
	13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

Form 13F Summary Page
	Report Summary:
	Number of Other Included Managers:	0
	Form 13F Information Table Entry Total:	84
	Form 13F Information Table Value Total:	639,192,659
		(thousands)

List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state “NONE” and omit the column headings and list entries.]
NONE

SEC FORM 13-F Information Table

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	July 31, 2015
Estimated average burden
hours per response:		23.8

COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
APPLIED INDL TECHNOLOGIES INC	COM	03820C105	27,043,254	156,600	SH		SOLE		0	156,600	0
ATI INC	COM	01741R102	3,510,284	77,200	SH		SOLE		0	77,200	0
ATLASSIAN CORPORATION	CL A	049468101	136,056	572	SH		SOLE		0	572	0
BANK AMERICA CORP	COM	060505104	7,585,851	225,300	SH		SOLE		0	225,300	0
BELDEN INC	COM	077454106	2,858,250	37,000	SH		SOLE		0	37,000	0
BORGWARNER INC	COM	099724106	2,294,400	64,000	SH		SOLE		0	64,000	0
BROADCOM INC	COM	11135F101	152,926	137	SH		SOLE		0	137	0
CALIFORNIA RES CORP	COM STOCK	13057Q305	20,712,784	378,800	SH		SOLE		0	378,800	0
CAMBRIDGE BANCORP	COM	132152109	2,220,800	32,000	SH		SOLE		0	32,000	0
CARPENTER TECHNOLOGY CORP	COM	144285103	27,406,680	387,100	SH		SOLE		0	387,100	0
CECO ENVIRONMENTAL CORP	COM	125141101	4,153,344	204,800	SH		SOLE		0	204,800	0
CELLEBRITE DI LTD	ORDINARY SHARES	M2197Q107	131,112	15,140	SH		SOLE		0	15,140	0
CENCORA INC	COM	03073E105	3,306,618	16,100	SH		SOLE		0	16,100	0
CHECK POINT SOFTWARE TECH LTD	ORD	M22465104	130,788	856	SH		SOLE		0	856	0
CHENIERE ENERGY PARTNERS LP	COM UNIT	16411Q101	463,047	9,300	SH		SOLE		0	9,300	0
CINEMARK HLDGS INC	COM	17243V102	16,000,604	1,135,600	SH		SOLE		0	1,135,600	0
COLUMBIA BKG SYS INC	COM	197236102	1,867,600	70,000	SH		SOLE		0	70,000	0
COMCAST CORP NEW	CL A	20030N101	5,827,665	132,900	SH		SOLE		0	132,900	0
COMFORT SYS USA INC	COM	199908104	30,151,222	146,600	SH		SOLE		0	146,600	0
CONSOL ENERGY INC NEW	COM	20854L108	20,809,710	207,000	SH		SOLE		0	207,000	0
DIME CMNTY BANCSHARES INC	COM	25432X102	3,016,160	112,000	SH		SOLE		0	112,000	0
DISCOVER FINL SVCS	COM	254709108	674,400	6,000	SH		SOLE		0	6,000	0
EMCOR GROUP INC	COM	29084Q100	25,937,772	120,400	SH		SOLE		0	120,400	0
ENCORE WIRE CORP	COM	292562105	3,503,040	16,400	SH		SOLE		0	16,400	0
EQUITRANS MIDSTREAM CORP	COM	294600101	3,445,930	338,500	SH		SOLE		0	338,500	0
EXTREME NETWORKS	COM	30226D106	81,620	4,627	SH		SOLE		0	4,627	0
FLOWSERVE CORP	COM	34354P105	22,320,630	541,500	SH		SOLE		0	541,500	0
FLUOR CORP NEW	COM	343412102	26,917,624	687,200	SH		SOLE		0	687,200	0
GRANITE CONSTR INC	COM	387328107	3,814,500	75,000	SH		SOLE		0	75,000	0
GSK PLC	SPONSORED ADR	37733W204	5,031,266	135,760	SH		SOLE		0	135,760	0
GUESS INC	COM	401617105	23,062,306	1,000,100	SH		SOLE		0	1,000,100	0
HACKETT GROUP INC	COM	404609109	109,842	4,824	SH		SOLE		0	4,824	0
HOMESTREET INC	COM	43785V102	2,111,500	205,000	SH		SOLE		0	205,000	0
HUNT J B TRANS SVCS INC	COM	445658107	2,696,490	13,500	SH		SOLE		0	13,500	0
INFOSYS LTD	SPONSORED ADR	456788108	123,220	6,704	SH		SOLE		0	6,704	0
LIBERTY ENERGY INC	COM CL A	53115L104	21,278,220	1,173,000	SH		SOLE		0	1,173,000	0
MACOM TECH SOLUTIONS HLDGS INC	COM	55405Y100	129,293	1,391	SH		SOLE		0	1,391	0
MARATHON OIL CORP	COM	565849106	623,328	25,800	SH		SOLE		0	25,800	0
MATERION CORP	COM	576690101	3,695,692	28,400	SH		SOLE		0	28,400	0
MEDTRONIC PLC	SHS	G5960L103	5,074,608	61,600	SH		SOLE		0	61,600	0
MICROCHIP TECHNOLOGY INC.	COM	595017104	131,482	1,458	SH		SOLE		0	1,458	0
MIDLAND STATES BANCORP INC	COM	597742105	3,031,600	110,000	SH		SOLE		0	110,000	0
MILLERKNOLL INC	COM	600544100	23,342,332	874,900	SH		SOLE		0	874,900	0
MODINE MFG CO	COM	607828100	35,414,040	593,200	SH		SOLE		0	593,200	0
MOSAIC CO NEW	COM	61945C103	1,893,690	53,000	SH		SOLE		0	53,000	0
MOTOROLA SOLUTIONS INC	COM NEW	620076307	131,498	420	SH		SOLE		0	420	0
MSC INDL DIRECT INC	CL A	553530106	21,649,388	213,800	SH		SOLE		0	213,800	0
NCR ATLEOS CORPORATION	COM SHS	63001N106	9,799,801	403,450	SH		SOLE		0	403,450	0
NCR VOYIX CORPORATION	COM	62886E108	14,170,580	838,000	SH		SOLE		0	838,000	0
NORTHWESTERN ENERGY GROUP INC	COM NEW	668074305	982,075	19,298	SH		SOLE		0	19,298	0
NXP SEMICONDUCTORS N V	COM	N6596X109	131,377	572	SH		SOLE		0	572	0
O-I GLASS INC	COM	67098H104	2,324,322	141,900	SH		SOLE		0	141,900	0
OIL STS INTL INC	COM	678026105	2,290,267	337,300	SH		SOLE		0	337,300	0
ORANGE CNTY BANCORP INC	COM	68417L107	843,360	14,000	SH		SOLE		0	14,000	0
OSHKOSH CORP	COM	688239201	23,926,087	220,700	SH		SOLE		0	220,700	0
OVINTIV INC	COM	69047Q102	2,477,088	56,400	SH		SOLE		0	56,400	0
OXFORD INDS INC	COM	691497309	2,780,000	27,800	SH		SOLE		0	27,800	0
PAR PAC HOLDINGS INC	COM NEW	69888T207	26,128,208	718,400	SH		SOLE		0	718,400	0
PARSONS CORP DEL	COM	70202L102	24,061,827	383,700	SH		SOLE		0	383,700	0
PHINIA INC	COMMON STOCK	71880K101	387,712	12,800	SH		SOLE		0	12,800	0
PRINCIPAL FINANCIAL GROUP INC	COM	74251V102	2,273,563	28,900	SH		SOLE		0	28,900	0
PURE STORAGE INC	CL A	74624M102	113,684	3,188	SH		SOLE		0	3,188	0
SERVICE PROPERTY TRUST	COM SH BEN INT	81761L102	2,484,286	290,900	SH		SOLE		0	290,900	0
SHELL PLC	SPON ADS	780259305	5,619,320	85,400	SH		SOLE		0	85,400	0
STERLING INFRASTRUCTURE INC	COM	859241101	32,156,001	365,700	SH		SOLE		0	365,700	0
STONEX GROUP INC	COM	861896108	3,377,723	45,750	SH		SOLE		0	45,750	0
SYNCHRONY FINANCIAL	COM	87165B103	496,470	13,000	SH		SOLE		0	13,000	0
TEEKAY CORPORATION	COM	Y8564W103	3,672,955	513,700	SH		SOLE		0	513,700	0
TELEFONAKTIEBOLAGET LM ERICSS	ADR B SEK 10	294821608	151,691	24,078	SH		SOLE		0	24,078	0
TEREX CORP NEW	COM	880779103	3,102,840	54,000	SH		SOLE		0	54,000	0
TSAKOS ENERGY NAVIGATION LTD	SHS	G9108L173	2,941,928	132,400	SH		SOLE		0	132,400	0
UNITED MICROELECTRONICS CORP	SPON ADR NEW	910873405	137,238	16,222	SH		SOLE		0	16,222	0
UNUM GROUP	COM	91529Y106	3,328,192	73,600	SH		SOLE		0	73,600	0
VALERO ENERGY CORP	COM	91913Y100	5,973,500	45,950	SH		SOLE		0	45,950	0
VALLEY NATL BANCORP	COM	919794107	1,574,700	145,000	SH		SOLE		0	145,000	0
VERTEX ENERGY INC	COM	92534K107	1,091,919	322,100	SH		SOLE		0	322,100	0
VISTEON CORP	COM NEW	92839U206	2,335,630	18,700	SH		SOLE		0	18,700	0
WABASH NATL CORP	COM	929566107	3,010,350	117,500	SH		SOLE		0	117,500	0
WAFD INC	COM	938824109	3,296,000	100,000	SH		SOLE		0	100,000	0
WEATHERFORD INTL PLC	ORD SHS	G48833118	4,686,057	47,900	SH		SOLE		0	47,900	0
WEBSTER FINL CORP	COM	947890109	1,624,320	32,000	SH		SOLE		0	32,000	0
XPO INC	COM	983793100	24,665,344	281,600	SH		SOLE		0	281,600	0
YPF SOCIEDAD ANONIMA	SPON ADR CL D	984245100	4,649,895	270,500	SH		SOLE		0	270,500	0
ZIFF DAVIS INC	COM	48123V102	121,883	1,814	SH		SOLE		0	1,814	0