First Interstate BancSystem, Inc. (NASDAQ: FIBK) (FIBK), parent company of First Interstate Bank, and Great Western Bancorp, Inc. (NYSE: GWB), parent company of Great Western Bank, have announced that they have entered into a definitive agreement under which the companies will combine in an all‐stock transaction. Pending regulatory and shareholder approvals, the transaction is expected to close during the first calendar quarter of 2022.

Latham & Watkins LLP represents the Scott Family FIBK Shareholder Group in the transaction with a corporate deal team led by Chicago partners Mark Gerstein and Bradley Faris, with associates William Nahill, Aidan Milstead, and Michael Magstadt. Advice was also provided on banking regulatory matters by New York partner Alan Avery and on tax matters by Chicago partner Diana Doyle.