To Our Shareholders At First Interstate Bank, our purposeful vision issimple: we meet people where they are, helpingthem get to where they want to be. In 2025, duringmy first year as CEO, that vision guided a year offocusing our footprint, exiting lines of business, anddisciplined capital management as we sharpenedour strategy around what we do best: relationshipbanking, organic growth, and serving communities. key investments. In the fourth quarter, we beganbuilding out a commercial banking team inColorado, along with additional investments inrelationship managers across our footprint. Weopened a new branch in Columbia Falls, Montana in2025, along with a new branch in Billings, Montanain early 2026. Guided by our strategy, we maintained strongcapital levels while deploying capital toshareholders. In the fourth quarter alone, wereturned approximately $138 million throughshare repurchases and dividends, with thequarterly dividend holding steady at $0.47 percommon share. First Interstate continues to benefit from a low-cost deposit base, strong market share in attractivegrowth markets, convenient branch locations, acompetitive technology offering, and a hospitalitydriven client-centric culture. To further build on these strengths, we madestrategic decisions to exit indirect lending andcertain nonrelationship large transactional loans,as well as outsource our consumer credit cardbusiness. At the same time, decisive action wastaken to optimize our footprint. In 2025, we divestedour Arizona and Kansas branches, closed singlebranches in Minnesota and North Dakota in early2026, and announced the sale of 11 rural Nebraskalocations to be finalized in 2026. These actionsresulted in a more focused, contiguous 10-statefootprint with a stronger deposit profile, improvedefficiency, and enhanced brand density. Community commitment remained central to whowe are. In 2025, First Interstate surpassed $100million in philanthropic giving since the foundingof the First Interstate BancSystem Foundation in1990, supporting food security, financial education,volunteerism, and nonprofit partners across ourfootprint. Our philosophy is a strong communityleads to a strong bank. Looking ahead, First Interstate is well positionedwith a clear strategy, a strong balance sheet,and a team offering best-in-class experienceand products to our clients. I am confident in ourdirection and grateful for the trust you place in us. We reorganized our bank, focused on creating aflatter banking organization designed to enabledecisions to be made closer to the client. This,combined with key hires and strategic promotionsof existing team members, has resulted in fasterdecision making, improved accountability, andbest-in-class client experiences. Sincerely, Jim ReuterPresident & CEOFirst Interstate BancSystem, Inc. To drive organic growth, in addition to ourBanking organization redesign, we have made ROOTED INRELATIONSHIPSEVERY DAY Core Principles Our Core Principles are our Compass.They guide how we move forward,wherever we are. These principles shapeintentional practices that ground ourculture and empower our team to delivermeaningful results. Across every market and line of business, First Interstate’spurposeful vision remains top of mind: to meet people wherethey are and help them get to where they want to be. We do this through: Responsive financial solutions that supportindividuals, families, and businessesPhilanthropic investments that upliftnonprofits and essential servicesVolunteerism and personal engagementthat strengthen community bonds Courage We grow relationships by showing upwith respect, seeking to understand, andbeing free to challenge. At First Interstate, we don’t just work in our communities,we’re part of them. Serving our clients goes hand-in-handwith serving our communities. It’s not an either or proposition,it’s who we are. Across our footprint, we work every day tostrengthen local economies, meet financial needs with care andexpertise, and invest deeply in the well being of the places wecall home. Our approach blends philanthropy, volunteerism, andresponsive banking solutions that ensure individuals, families,and businesses have the support they need to thrive. Collaboration We build together as one team bringingthe best of our collective experiences. Curiosity We lead with inquiry to unlock potential,balancing what is with what could be. BRANCH NETWORKOPTIMIZATION In 2025, First Interstate continued to take important stepsto align our branch network with the markets that offerthe greatest opportunity for long-term growth. Our branchtransformation strategy remains focused on creating abalanced, efficient footprint, one that supports our clients’evolving preferences while positioning us to invest moredeeply in the communities where we have the strongestpotential for organic growth. As part of this effort, we completed the divestiture of ourArizona and Kansas branches to Enterprise Bank & Trust inOctober