Boardroom Alpha
10-K primary document
FIBK · Annual Report (Form 10-K) · Filed February 26, 2026

First Interstate Bancsystem Inc10-K exhibit

fibk-20251231xex211_subsid.htm
Document

Exhibit 21.1
Subsidiaries of First Interstate BancSystem, Inc.
SubsidiaryState of Incorporation or Jurisdiction of OrganizationBusiness Name
First Interstate BankMontanaFirst Interstate Bank
FI Statutory Trust IConnecticutFI Statutory Trust I
FI Capital Trust IIDelawareFI Capital Trust II
FI Statutory Trust IIIDelawareFI Statutory Trust III
FI Capital Trust IVDelawareFI Capital Trust IV
FI Statutory Trust VDelawareFI Statutory Trust V
FI Statutory Trust VIDelawareFI Statutory Trust VI
Northwest Bancorporation Capital Trust IDelawareNorthwest Bancorporation Capital Trust I
Great Western Statutory Trust IVConnecticutGreat Western Statutory Trust IV
GWB Capital Trust VIDelawareGWB Capital Trust VI
HF Financial Capital Trust VDelawareHF Financial Capital Trust V
HF Financial Capital Trust VIDelawareHF Financial Capital Trust VI
Sunstate Bancshares Trust IIDelawareSunstate Bancshares Trust II



Disclaimer

The opinions and information contained herein have been obtained or derived from sources believed to be reliable, but Boardroom Alpha cannot guarantee its accuracy and completeness, and that of the opinions based thereon.

This report contains opinions and is provided for informational purposes only – it does not constitute investment, legal or tax advice. You should not rely solely upon the research herein for purposes of transacting securities or other investments, and you are encouraged to conduct your own research and due diligence, and to seek the advice of a qualified securities professional before you make any investment.

None of the information contained in this report constitutes, or is intended to constitute a recommendation by Boardroom Alpha of any particular security or trading strategy or a determination by Boardroom Alpha that any security or trading strategy is suitable for any specific person. To the extent any of the information contained herein may be deemed to be investment advice, such information is impersonal and not tailored to the investment needs of any specific person.

No representation or warranty, expressed or implied, is made on behalf of Boardroom Alpha as to the accuracy or completeness of the information contained herein. Boardroom Alpha does not accept any liability for any direct, indirect or consequential loss or damage suffered by any person as a result of relying on all or any part of this research and any liability is expressly disclaimed.

Full disclaimer