First Interstate Bancsystem Inc filed 6 current reports with the SEC under Item 5.02, which covers directors and officers leaving or being appointed, the latest on 2026-09-16. Between them they name 2 people, with 2 appointments and 1 departure. Each change below is quoted from the filing and linked to it.
Every change, newest first
Reported
With the execution of the Employment Agreement, the previously announced appointment of Mr. Lee as Executive Vice President and Chief Operations Officer of the Company and the Bank became effective.
Reported
On August 21, 2026, the registrant announced the appointment of Mr. Jeff Lee to become Executive Vice President and Chief Operations Officer of the registrant and its wholly owned subsidiary, First Interstate Bank (the "Bank"), with Mr. Lee's employment starting date expected to begin formally on September 14, 2026 (the "Effective Date").
Appointed: Matthew Ritter, Director
On July 13, 2026, the Board of Directors (the "Board") of First Interstate BancSystem, Inc. (the "Company") appointed Mr. Matthew Ritter and Mr. Kevin Turner to serve as Class II directors on the Board, each with a term expiring at the Company's 2029 annual meeting of shareholders.
Appointed: Matthew Ritter
Mr. Ritter has been appointed to serve on the Board's Risk Committee and Technology, Innovation and Operations Committee, and Mr. Turner has been appointed to serve on the Board's Audit Committee and Technology, Innovation and Operations Committee.
Reported
The registrant expects to conduct a national search for a replacement for this role, which role is expected to be performed by the registrant's other in-house lawyers until a successor is appointed.
Reported
Pursuant to the director retirement policy set forth in the Corporate Governance Guidelines of First Interstate BancSystem, Inc. (the "Company"), on May 27, 2026, each of Ms. Patricia L. Moss and Messrs. David L. Jahnke and Stephen M. Lacy, each having reached the retirement age of 72, was deemed to have retired and resigned automatically from the Company's Board of Directors (the "Board") as a Class II, Class III and Class I director, respectively, effective immediately prior to the Company's 2026 annual meeting of shareholders (the "2026 Annual Meeting").
Departing: Kristina Robbins, Chief Executive Officer
On May 11, 2026, First Interstate BancSystem, Inc. (the "Company") announced that the employment as Executive Vice President and Chief Operations Officer of the Company ("COO") and its wholly owned bank subsidiary by Ms. Kristina Robbins was terminated, without cause, effective immediately, and that Ms. Robbins employment with the Company would be contemporaneously transitioned to a new role of Executive Advisor to the Company's Chief Executive Officer, Mr. James Reuter (the "CEO").
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.