Great Western Bancorp, Inc. Announces Closing of Initial Public Offering and Full Exercise of the Underwriters’ Option to Purchase Additional Shares

Great Western Bancorp, Inc. (NYSE:GWB) announced today that it has completed its initial public offering of 18,400,000 shares, or 31.8%, of its common stock, which includes the full exercise of the underwriters’ option to purchase an additional 2,400,000 shares. GWB’s common stock began trading on the New York Stock Exchange on October 15, 2014, under the ticker symbol “GWB”. The shares were offered by an affiliate of National Australia Bank.

Deutsche Bank Securities and BofA Merrill Lynch acted as joint book-running managers and underwriters for the offering. Keefe, Bruyette & Woods, RBC Capital Markets, Sandler O’Neill + Partners, L.P., Macquarie Capital and Sterne Agee were co-managers for the offering.

GWB is the holding company for Great Western Bank, a full-service regional bank focused on relationship-based business and agribusiness banking. The bank services its customers through 162 branches in seven states: South Dakota, Iowa, Nebraska, Colorado, Arizona, Kansas and Missouri.

The prospectus relating to the offering may be obtained from: Deutsche Bank Securities Inc., Attention: Prospectus Group, 60 Wall Street, New York, NY 10005-2836, via telephone: (800) 503-4611 or via email: prospectus.cpdg@db.com; and BofA Merrill Lynch, Attention: Prospectus Department, 222 Broadway, New York, NY 10038, via email: dg.prospectus_requests@baml.com.

A registration statement relating to these securities was filed with and has been declared effective by the Securities and Exchange Commission. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.