<SEC-DOCUMENT>0001476765-22-000078-index.html : 20220809
<SEC-HEADER>0001476765-22-000078.hdr.sgml : 20220809
<ACCEPTANCE-DATETIME>20220809163903
ACCESSION NUMBER:		0001476765-22-000078
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		16
CONFORMED PERIOD OF REPORT:	20220630
FILED AS OF DATE:		20220809
DATE AS OF CHANGE:		20220809

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GOLUB CAPITAL BDC, Inc.
		CENTRAL INDEX KEY:			0001476765
		IRS NUMBER:				471893276
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	814-00794
		FILM NUMBER:		221148980

	BUSINESS ADDRESS:	
		STREET 1:		200 PARK AVENUE
		STREET 2:		25TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166
		BUSINESS PHONE:		212.750.6060

	MAIL ADDRESS:	
		STREET 1:		200 PARK AVENUE
		STREET 2:		25TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10166

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GOLUB CAPITAL INVESTMENT Corp
		DATE OF NAME CHANGE:	20170511

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Golub Capital BDC, Inc.
		DATE OF NAME CHANGE:	20100414

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Golub Capital BDC LLC
		DATE OF NAME CHANGE:	20091113
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>gbdc-20220630.htm
<DESCRIPTION>10-Q
<TEXT>
Document 1 - file: gbdc-20220630.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-31.1 <SEQUENCE>2 <FILENAME>gbdcfy2022q310-qexhibit311.htm <DESCRIPTION>EX-31.1 <TEXT> Document 2 - file: gbdcfy2022q310-qexhibit311.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-31.2 <SEQUENCE>3 <FILENAME>gbdcfy2022q310-qexhibit312.htm <DESCRIPTION>EX-31.2 <TEXT> Document 3 - file: gbdcfy2022q310-qexhibit312.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-32.1 <SEQUENCE>4 <FILENAME>gbdcfy2022q310-qexhibit321.htm <DESCRIPTION>EX-32.1 <TEXT> Document 4 - file: gbdcfy2022q310-qexhibit321.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>5 <FILENAME>gbdc-20220630.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 5 - file: gbdc-20220630.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>6 <FILENAME>gbdc-20220630_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT <TEXT> Document 6 - file: gbdc-20220630_def.xml
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</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>8 <FILENAME>gbdc-20220630_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT <TEXT> Document 8 - file: gbdc-20220630_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>9 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 9 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>10 <FILENAME>R2.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 10 - file: R2.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>11 <FILENAME>gbdc-20220630_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 11 - file: gbdc-20220630_htm.html
Document 11 - RAW XML: gbdc-20220630_htm.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>12 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 12 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>13 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>14 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 14 - file: FilingSummary.html
Document 14 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>17 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>18 <FILENAME>0001476765-22-000078-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 18 - file: 0001476765-22-000078-xbrl.zip
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