FIRST INTERSTATE BANCSYSTEM INC Compensation Agreements

Company Director Compensation Summary (Filed With SEC on February 29, 2024)

Company Director Compensation Summary (Filed With SEC on February 24, 2023)

Company Director Compensation Summary (Filed With SEC on February 25, 2022)

Amendment 2021-1 to the First Interstate BancSystem, Inc. Deferred Compensation Plan (Filed With SEC on November 4, 2021)

First Amendment to the First Interstate BancSystem, Inc. Deferred Compensation Plan (Filed With SEC on May 7, 2021)

First Interstate BancSystem, Inc. Director Compensation Summary (Filed With SEC on March 1, 2021)

First Interstate BancSystem, Inc. Director Compensation (Filed With SEC on February 27, 2020)

First Interstate BancSystem, Inc. Director Compensation (Filed With SEC on February 27, 2019)

Fourth Amendment to the First Interstate BancSystem, Inc. 2006 Equity Compensation Plan (Filed With SEC on July 31, 2013)

Third Amendment to the First Interstate BancSystem, Inc. 2006 Equity Compensation Plan (Filed With SEC on May 1, 2013)

Amendment to the First Interstate BancSystem, Inc. 2006 Equity Compensation Plan, dated March 19, 2010 (Filed With SEC on March 22, 2010)

2006 Equity Compensation Plan (Filed With SEC on June 1, 2006)

EX-10.14 Deferred Compensation Plan (Filed With SEC on March 19, 2003)