<SEC-DOCUMENT>0001193125-23-157969-index.html : 20230531
<SEC-HEADER>0001193125-23-157969.hdr.sgml : 20230531
<ACCEPTANCE-DATETIME>20230531170857
ACCESSION NUMBER:		0001193125-23-157969
CONFORMED SUBMISSION TYPE:	497AD
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20230531
DATE AS OF CHANGE:		20230531

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GLADSTONE CAPITAL CORP
		CENTRAL INDEX KEY:			0001143513
		IRS NUMBER:				542040781
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		497AD
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-261398
		FILM NUMBER:		23981955

	BUSINESS ADDRESS:	
		STREET 1:		1521 WESTBRANCH DRIVE
		STREET 2:		SUITE 100
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
		BUSINESS PHONE:		703-287-5800

	MAIL ADDRESS:	
		STREET 1:		1521 WESTBRANCH DRIVE
		STREET 2:		SUITE 100
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
</SEC-HEADER>
<DOCUMENT>
<TYPE>497AD
<SEQUENCE>1
<FILENAME>d505681d497ad.htm
<DESCRIPTION>GLADSTONE CAPITAL CORPORATION
<TEXT>
Document 1 - file: d505681d497ad.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g505681g0531091348074.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g505681g0531091348074.jpg

</DOCUMENT>
</SEC-DOCUMENT>