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 *
NATIONAL AUSTRALIA BANK LTD
   2. Issuer Name and Ticker or Trading Symbol
Great Western Bancorp, Inc. [GWB] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
LEVEL 1, 800 BOURKE STREET		 3. Date of Earliest Transaction (Month/Day/Year)
04/30/2015
(Street)

DOCKLANDS, VICTORIA, C3 3008		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 $0.01 per share 04/30/2015   S   20,000,000 (1) (2) D $ 20.5863 19,486,114 I See footnote (3)
Common Stock, par value $0.01 per share 05/01/2015   S   3,000,000 (1) (2) D $ 20.5863 16,486,114 I See footnote (3)

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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
NATIONAL AUSTRALIA BANK LTD
LEVEL 1, 800 BOURKE STREET
DOCKLANDS, VICTORIA, C3 3008		   X   X    
National Americas Holdings LLC
245 PARK AVENUE
NEW YORK, NY 10167		     X    

Signatures

 By: /s/ Louise R. Thomson, as Company Secretary for National Australia Bank Limited   05/04/2015
**Signature of Reporting Person Date
 By: /s/ Donald J. Straka, as Secretary for National Americas Holdings LLC   05/04/2015
**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) On April 30, 2015, National Americas Holdings LLC ("NAH"), a wholly owned subsidiary of National Australia Bank Limited ("NAB"), and NAB entered into an underwriting agreement (the "Underwriting Agreement") with Great Western Bancorp, Inc. (the "Company") and Merrill Lynch, Pierce, Fenner & Smith Incorporated, Deutsche Bank Securities Inc. and J.P. Morgan Securities LLC, as representatives of the several underwriters listed on Schedule A thereto (the "Underwriters"), providing for the sale of by NAH 20,000,000 shares of common stock of the Company in an underwritten public offering (the "Offering").
(2) (Continued from footnote 1) The Underwriting Agreement also granted the Underwriters an option to purchase up to an additional 3,000,000 shares of common stock of the Company from NAH within 30 days from the date of the Underwriting Agreement. On May 1, 2015, the Underwriters exercised the option in full. As a result, NAH has agreed to sell 23,000,000 shares to the Underwriters at a price of $20.58625 per share of common stock, representing 39.7% of the outstanding common stock of the Company. The closing is expected to occur on May 6, 2015.
(3) These securities are owned of record by NAH. NAB, as the ultimate parent of NAH, is deemed to beneficially own all shares of common stock of the Company. The board of directors of NAB has the power to vote, or direct the vote of, and to dispose, or direct the disposition of, shares of common stock of the Company owned of record by NAH. Each of NAB and NAH may be deemed a director by deputization of the Company.

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