Every material Form 8-K First Interstate BancSystem filed with the SEC in 2026, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
First Interstate BancSystem reported third-quarter 2026 net income of $62.2 million, or $0.65 per diluted share, down from $83.9 million, or $0.87, in the second quarter and $71.4 million, or $0.69, a year earlier. The second quarter included a $19.5 million gain from the sale of eleven Nebraska branches, and net interest margin rose to 3.53%, which the company cited as a sign of improving earnings power. The company also declared a $0.47 per share dividend payable November 13, 2026.
Net income was $62.2 million, or $0.65 per diluted share, versus $83.9 million, or $0.87, in Q2 2026 and $71.4 million, or $0.69, in Q3 2025.
Net interest margin rose to 3.53% from 3.45% in Q2 2026 and 3.34% in Q3 2025.
Q2 2026 results included a $19.5 million gain on the sale of eleven Nebraska branches.
Board declared a $0.47 per share dividend, payable November 13, 2026, to holders of record as of November 3, 2026.
First Interstate BancSystem and its bank subsidiary signed an employment agreement with Jeff Lee on September 14, 2026, formalizing his appointment as Executive Vice President and Chief Operations Officer. The filing sets out severance terms, including enhanced payments if he is terminated without cause or leaves for good reason within six months before or 18 months after a change in control.
Employment agreement with Jeff Lee executed and effective September 14, 2026; his COO appointment took effect with the signing.
Severance without cause or for good reason: one times base salary plus one times average annual cash incentive over the prior three years, paid over 12 months, with up to 12 months of insurance coverage.
Change-in-control severance: two times base salary plus two times target annual cash incentive, a pro-rata target bonus, and up to 24 months of insurance coverage.
Non-compete and non-solicitation restrictions run 12 months after termination, or 18 months if termination falls within the change-in-control window.
First Interstate BancSystem announced that Jeff Lee, 57, will join as Executive Vice President and Chief Operations Officer of the company and First Interstate Bank, with a formal start expected on September 14, 2026. The filing sets an initial base salary of $480,000 and an expected restricted stock unit award with a $200,000 grant date value, which is a routine executive hiring step for shareholders.
Jeff Lee, 57, to become EVP and Chief Operations Officer; start expected September 14, 2026
Initial annual base salary set at $480,000
Expected time-based restricted stock units with $200,000 grant date value, vesting in three annual installments beginning September 14, 2027
Lee was an independent strategic consultant from March 2025 to November 2025; previously held roles at Seacoast Banking Corporation of Florida until January 2024
First Interstate BancSystem reported second-quarter 2026 net income of $83.9 million, or $0.87 per diluted share, up from $60.2 million, or $0.61, in the first quarter and $71.7 million, or $0.69, a year earlier. The board also raised its share repurchase authorization by $150.0 million to a total of $450.0 million and declared a $0.47 per share dividend, which matters to shareholders because it reflects higher earnings and continued capital return.
Q2 2026 net income of $83.9 million, or $0.87 per diluted share, versus $60.2 million, or $0.61, in Q1 2026
Net interest margin rose to 3.45% from 3.41% in Q1 2026; the Nebraska branch sale produced a $19.5 million gain
Board raised the buyback authorization by $150.0 million to $450.0 million total; about $29.7 million remained available as of June 30, 2026
Dividend of $0.47 per share declared July 22, 2026, payable August 14, 2026, to holders of record on August 4, 2026
First Interstate BancSystem appointed Matthew Ritter and Kevin Turner as Class II directors on July 13, 2026, filling seats created by a board size increase. The board now has 13 members, and both new directors were determined to be independent under NASDAQ rules.
Matthew Ritter and Kevin Turner appointed as Class II directors on July 13, 2026, with terms expiring at the 2029 annual meeting.
Ritter joins the Risk Committee and Technology, Innovation and Operations Committee; Turner joins the Audit Committee and Technology, Innovation and Operations Committee.
Filing discloses a loan from First Interstate Bank to an entity through which Ritter conducts his investment business, made on terms the company says are comparable to those for unrelated borrowers.
Turner previously served as chief operating officer of Microsoft Corporation (2005 to 2016).
First Interstate BancSystem terminated Executive Vice President and General Counsel/Corporate Secretary Kirk D. Jensen involuntarily and without cause, effective July 9, 2026. The company said the departure was not due to any disagreement over financial reporting, operations, policies or practices, and plans a national search for a replacement while other in-house lawyers perform the role.
Kirk D. Jensen's employment ended effective July 9, 2026, involuntarily and without cause.
Jensen held the roles of Executive Vice President and General Counsel/Corporate Secretary.
The company expects to run a national search for a replacement; in-house lawyers will cover the role until a successor is appointed.
The company said the termination was not the result of any disagreement over financial reporting, operations, policies or practices.
Three directors, Patricia L. Moss, David L. Jahnke and Stephen M. Lacy, were deemed to have retired on May 27, 2026, under the company's director retirement age policy of 72, and the board was reduced from 14 to 11 seats. Shareholders also approved a charter amendment, effective May 28, 2026, that applies a plurality voting standard to contested director elections while keeping majority voting for uncontested elections.
Moss, Jahnke and Lacy were deemed retired and resigned from the board on May 27, 2026, before the 2026 annual meeting; the company said none of the retirements involved a disagreement with the company.
Board size was reduced from 14 to 11 directors, with each class reduced to avoid vacancies.
Shareholders approved the charter amendment: 72,701,511 for and 1,281,015 against; it took effect with a filing on May 28, 2026.
Shareholders voted on the auditor: Ernst & Young LLP was ratified for fiscal 2026 with 79,488,279 votes for and 233,150 against.
First Interstate BancSystem said its Executive Vice President and Chief Operations Officer, Kristina Robbins, was terminated without cause effective immediately on May 11, 2026, and moved into an Executive Advisor role reporting to CEO James Reuter. The CEO is expected to handle COO duties until a successor is named, which matters to shareholders because the company's operations leadership is changing and no permanent replacement has been named in the filing.
Kristina Robbins' COO employment was terminated without cause, effective May 11, 2026 (announced that day).
Robbins will serve as Executive Advisor to CEO James Reuter, expected to end August 1, 2026, unless ended earlier.
CEO James Reuter is expected to perform COO duties until a successor is appointed; the filing names no successor.
Robbins will keep her current compensation and benefits during the advisory period under a Transition and Separation Agreement dated May 11, 2026.
First Interstate BancSystem reported first-quarter 2026 net income of $60.2 million, or $0.61 per diluted share, up from $50.2 million a year earlier but down from $108.8 million in the fourth quarter of 2025, which included a $62.7 million gain on the sale of its Arizona and Kansas branches. Net interest income fell 2.1% from a year earlier to $200.7 million, while net interest margin rose to 3.41%. The board also declared a $0.47 per share dividend, and the company repurchased 2.39 million shares during the quarter for about $84.0 million.
Net income of $60.2 million, or $0.61 per diluted share, versus $108.8 million ($1.08) in Q4 2025 and $50.2 million ($0.49) in Q1 2025
Q4 2025 noninterest income included a $62.7 million gain from the sale of the Arizona and Kansas branches
Net interest income was $200.7 million, down from $206.4 million in Q4 2025 and down 2.1% from Q1 2025; net interest margin was 3.41%
Dividend of $0.47 per share payable May 21, 2026, to holders of record as of May 11, 2026
First Interstate BancSystem reported fourth-quarter 2025 net income of $108.8 million, or $1.08 per diluted share, up from $71.4 million in the third quarter and $52.1 million a year earlier. The results include a $62.7 million gain from the sale of its Arizona and Kansas branches, which closed on October 10, 2025, and the board raised its stock repurchase authorization by $150.0 million, to $300.0 million in total since August 2025.
Q4 2025 net income of $108.8 million, or $1.08 per diluted share, versus $0.69 in Q3 2025 and $0.50 in Q4 2024
$62.7 million gain from the sale of the Arizona and Kansas branches, which closed on October 10, 2025, was the main driver of higher noninterest income
Net interest income fell 3.7% year over year to $206.4 million in Q4 2025, while net interest margin rose to 3.36%
Board authorized an additional $150.0 million for buybacks on January 27, 2026, and declared a $0.47 per share dividend payable February 20, 2026 to holders of record as of February 10, 2026
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