First Interstate BancSystem (FIBK) Proxy Filing summary

Executive summary

• Annual shareholder meeting scheduled for May 20, 2025, at 4:00 p.m. MDT in Billings, MT.

• Proxy materials are available online, by email, or by mail upon request.

• Board recommends voting FOR all director nominees and FOR proposals 2 and 3.

Voting matters and shareholder proposals

• Election of four Class I director nominees: Stephen B. Bowman, Stephen M. Lacy, Joyce A. Phillips, and Jeremy P. Scott.

• Advisory vote on executive compensation (say-on-pay) included.

• Ratification of Ernst & Young LLP as independent auditor for fiscal year ending December 31, 2025.

• Proxies may vote on other business as permitted by law.

Board of directors and corporate governance

• Board recommends a vote FOR each of the director nominees.