Ownership Submission
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

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
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 __X__ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Executive Officer
(Last)
(First)
(Middle)
C/O GOLUB CAPITAL BDC, INC., 150 SOUTH WACKER DRIVE, SUITE 800		 3. Date of Earliest Transaction (Month/Day/Year)
12/31/2012
(Street)

CHICAGO, IL 60606		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 12/31/2012   S   1,216,983 D $ 15.9 794,808 I By Golub Capital Company IV, LLC (1) (2)
Common Stock, par value $0.001 per share 12/31/2012   P   113,208 A $ 15.9 113,208 I By GCI Development LLC (3)
Common Stock, par value $0.001 per share               1,135,853 I By Golub Capital Company VI LLC (4)
Common Stock, par value $0.001 per share               83,246 D  
Common Stock, par value $0.001 per share               2,291,784 I By Golub Capital Company V LLC (5)
Common Stock, par value $0.001 per share               1,794 I By GC Investment Management LLC (6)
Common Stock, par value $0.001 per share               1,752,048 I By GEMS Fund, L.P. (7)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction 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
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Golub David
C/O GOLUB CAPITAL BDC, INC.
150 SOUTH WACKER DRIVE, SUITE 800
CHICAGO, IL 60606		   X   X   Chief Executive Officer  

Signatures

 /s/ David B. Golub   01/03/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Mr. Golub is a control person of Golub Capital LLC, the investment advisor of Golub Capital Company IV, LLC. Due to his control of and ownership interest in Golub Capital Company IV, LLC, which directly owns 794,808 shares of Common Stock of the Issuer, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity although voting rights to the Common Stock have been passed through to the members of Golub Capital Company IV, LLC. Mr. Golub disclaims beneficial ownership of such shares of Common Stock except to the extent of his pecuniary interest therein.
(2) On December 31, 2012, Golub Capital Company IV, LLC sold in block trades to two funds, for which an entity controlled by Mr. Golub serves as a non-discretionary sub-adviser, an aggregate of 977,988 shares of Common Stock at a price of $15.90 per share. Also on December 31, 2012, Golub Capital Company IV, LLC sold an aggregate of 238,995 shares to Golub Capital Employee Grant Program Rabbi Trust and GCI Development LLC. As described below, the shares purchased by these entities will be utilized for awarding equity incentive compensation to employees of Golub Capital. Golub Capital Company IV, LLC sold a portion of their shares in order to diversify their investments. After the sale, Golub Capital Company IV, LLC still directly holds 764,808 shares of Common Stock.
(3) On December 31, 2012, GCI Development LLC purchased an aggregate of 113,208 shares from Golub Capital Company IV, LLC. Due to his control of and ownership interest in GCI Development LLC, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity. These shares will be held for the benefit of employees of GCI Development LLC and vest subject to certain adjustments as specified by the terms of the compensation arrangements, Mr. Golub disclaims beneficial ownership of such shares of Common Stock held by GCI Development LLC except to the extent of his pecuniary interest therein.
(4) Mr. Golub is a control person of Golub Capital LLC, the investment advisor of Golub Capital Company VI LLC. Due to his control of and ownership interest in Golub Capital Company VI LLC, which directly owns 1,135,853 shares of Common Stock of the Issuer, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity although voting rights to the Common Stock have been passed through to the members of Golub Capital Company VI LLC. Mr. Golub disclaims beneficial ownership of such shares of Common Stock except to the extent of his pecuniary interest therein.
(5) Mr. Golub is a control person of Golub Capital LLC, the investment advisor of Golub Capital Company V, LLC. Due to his control of and ownership interest in Golub Capital Company V LLC, which directly owns 2,291,784 shares of Common Stock of the Issuer, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity although voting rights to the Common Stock have been passed through to the members of Golub Capital Company V LLC. Mr. Golub disclaims beneficial ownership of such shares of Common Stock except to the extent of his pecuniary interest therein.
(6) Due to his control of and ownership interest in GC Investment Management LLC, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity. These shares will be held for the benefit of employees of GC Investment Management LLC and vest subject to certain adjustments as specified by the terms of the compensation arrangements, Mr. Golub disclaims beneficial ownership of such shares of Common Stock held by GC Investment Management LLC except to the extent of his pecuniary interest therein.
(7) Mr. Golub is a control person of GC Advisors LLC, the investment advisor of GEMS Fund, L.P. Due to his control of and ownership interest in GEMS Fund, L.P., which directly owns 1,752,048 shares of Common Stock of the Issuer, Mr. Golub may be viewed as having investment power over all of the shares owned by such entity although voting rights to the Common Stock have been passed through to the limited partners of GEMS Fund, L.P. Mr. Golub disclaims beneficial ownership of such shares of Common Stock except to the extent of his pecuniary interest therein.

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