Announces Third Quarter Fiscal Year 2017 Earnings and Conference Call Date

Great Western Bancorp, Inc. (NYSE:GWB),
the parent company of Great Western Bank (www.greatwesternbank.com),
announced today that it will release third quarter financial results on
Thursday, July 27, 2017.

The company’s earnings will be discussed during a live conference call,
beginning at 8:30 AM (ET), by Chairman, President and Chief Executive
Officer Ken Karels, Chief Financial Officer Peter Chapman, Chief Risk
Officer Steve Ulenberg, Chief Credit Officer Michael Gough, Regional
President Doug Bass and Head of Investor Relations David Hinderaker.

Interested persons may access the conference call by dialing (855)
238-8837 approximately 10 minutes prior to start time. Please ask to be
joined into the Great Western Bancorp, Inc. (GWB) call. International
callers should dial (412) 542-4114. This call will also be broadcast
live over the Internet and can be accessed in the Investor Relations
section of Great Western’s website at www.greatwesternbank.com.

A replay will be available beginning one hour following the conference
call ending on August 10, 2017. To access the replay, dial (877)
344-7529 (U.S.) and use conference ID #10109131. International callers
should dial (412) 317-0088 and enter the same conference ID number.

About Great Western Bancorp, Inc.

Great Western Bancorp, Inc. is the holding company for Great Western
Bank, a full-service regional bank focused on relationship-based
business and agribusiness banking. Great Western Bank offers small and
mid-sized businesses a focused suite of financial products and a range
of deposit and loan products to retail customers through several
channels, including the branch network, online banking system, mobile
banking applications and customer care centers. The bank services its
customers through more than 170 branches in nine states: Arizona,
Colorado, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota and
South Dakota. To learn more about Great Western Bank visit www.greatwesternbank.com.

Forward Looking Statements

The materials posted may contain forward-looking statements, including
guidance, involving significant risks and uncertainties, which will be
identified by words such as “believe,” “expect,” “anticipate,” “intend,”
“estimate,” “should,” “is likely,” “will,” “going forward” and other
expressions that indicate future events and trends and may be followed
by or reference cautionary statements. A number of factors could cause
actual results to differ materially from those in the forward-looking
information. These factors are outlined in our most recent earnings
press release and in more detail in our most current 10-Q and 10-K
filings. Great Western Bancorp, Inc. disclaims any obligation to update
any of the forward-looking statements that are made from time to time to
reflect future events or developments or changes in expectations.