Statement of Changes in Beneficial Ownership (4)

FORM 4

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Golub David	2. Issuer Name and Ticker or Trading Symbol GOLUB CAPITAL BDC, Inc. [ GBDC ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) Chief Executive Officer
(Last)          (First)          (Middle) C/O GOLUB CAPITAL BDC, INC., 200 PARK AVENUE, 25TH FLOOR	3. Date of Earliest Transaction (MM/DD/YYYY) 7/28/2021
(Street) NEW YORK, NY 10166 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.001 per share	7/28/2021		P		4143	A	$15.9426	2377488.062	I	By GGP Holdings, L.P. (1)
Common Stock, par value $0.001 per share	7/29/2021		P		5000	A	$15.9674	2382488.062	I	By GGP Holdings, L.P. (1)
Common Stock, par value $0.001 per share								188676	I	By CDGPE, LLC (2)
Common Stock, par value $0.001 per share								166672	I	By CDGQ, LLC (3)
Common Stock, par value $0.001 per share								14977.824	I	By Golub Onshore GP, LLC (4)
Common Stock, par value $0.001 per share								1359031.232	I	By GCOP LLC (5)
Common Stock, par value $0.001 per share								125388.954	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:
(1)	Due to his control and ownership in GGP Holdings, L.P., Mr. Golub is viewed as having investment power over all of the shares owned by such entity.
(2)	The shares reported herein are directly beneficially owned by CDGPE, LLC and are held for the benefit of Mr. Golub's family trust.
(3)	The shares reported herein are directly beneficially owned by CDGQ, LLC and are held for the benefit of Mr. Golub's family trust.
(4)	Due to his control and ownership in Golub Onshore GP, LLC, Mr. Golub is viewed as having investment power over all of the shares owned by such entity.
(5)	Due to his control of and ownership interest in GCOP LLC, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Golub David C/O GOLUB CAPITAL BDC, INC. 200 PARK AVENUE, 25TH FLOOR NEW YORK, NY 10166	X		Chief Executive Officer

Signatures
/s/ David B. Golub		7/30/2021
**Signature of Reporting Person		Date