FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   KNIERIEM KARLYN M 2. Date of Event Requiring Statement (Month/Day/Year) 06/15/2018 3. Issuer Name and Ticker or Trading Symbol Great Western Bancorp, Inc. [GWB] (Last) (First) (Middle) C/O GREAT WESTERN BANCORP, INC., 225 S MAIN AVENUE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP and Chief Risk Officer 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) SIOUX FALLS, SD 57104 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	  (1)	  (1)	Common Stock, par value $0.01 per share	536	$ (2)	D	Â
Restricted Stock Units - 2017	  (1)	  (1)	Common Stock, par value $0.01 per share	243	$ (3)	D	Â
Restricted Stock Units (2017 STI)	  (1)	  (1)	Common Stock, par value $0.01 per share	117	$ (4)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
KNIERIEM KARLYN M C/O GREAT WESTERN BANCORP, INC. 225 S MAIN AVENUE SIOUX FALLS, SD 57104	Â	Â	  EVP and Chief Risk Officer	Â

Signatures

Donald J. Straka, as attorney-in-fact for Karlyn M Knieriem		06/19/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Each restricted stock unit represents a contingent right to receive one share of the common stock, par value $0.01 per share, of Great Western Bancorp, Inc.
(2)	The restricted stock units vest on October 17, 2018. The restricted stock units have no expiration date.
(3)	The restricted stock units vest in three equal installments beginning on December 1, 2018. The restricted stock units have no expiration date.
(4)	The restricted stock units vest on December 1, 2018. The restricted stock units have no expiration date.

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