SHAREHOLDER INVESTIGATION: Halper Sadeh LLP Investigates FIBK, FTSI, MCFE, ABTX, STXB; Shareholders are Encouraged to Contact the Firm

NEW YORK, Dec. 16, 2021 /PRNewswire/ -- Halper Sadeh LLP, a global investor rights law firm, announces it is investigating the following companies:

First Interstate BancSystem, Inc. (NASDAQ: FIBK) concerning potential violations of the federal securities laws and/or breaches of fiduciary duties relating to its merger with Great Western Bancorp, Inc. Following completion of the transaction, First Interstate shareholders will collectively own 57% of the combined company. If you are a First Interstate shareholder, click here to learn more about your rights and options.