第一州际银行 FIBK

Mr. Reuter has been President and Chief Executive Officer of the Company and First Interstate Bank as well as a member of the Board of Directors since November 2024. Mr. Reuter leads with expertise drawn from more than 38 years in the banking industry. Prior to joining the Company, Mr. Reuter was the President and Chief Executive Officer of FirstBank Holding Company of Colorado, one of the largest privately held banks in the nation, from 2017 until his retirement in March 2024. Mr. Reuter started his banking career at FirstBank in 1987 and, prior to CEO, served as the bank's Chief Operating Officer, overseeing many of the bank's divisions including: loan/mortgage operations; information technology (IT); digital banking; payments; business banking; contact center; online account/loan acquisition; marketing; and treasury management. Mr. Reuter has been actively involved in the industry, serving on the Board of Directors of the American Bankers Association (ABA), ABA Government Relations Committee, ABA Payments Systems Advisory Council, and the ABA Venture Investment Committee. He also serves on the Board of Directors for the Mid-Size Bank Coalition of America, and previously served on The Clearing House Real Time Payments Business Committee, the Federal Reserve Bank Faster Payments Task Force Steering Committee, and the Colorado Bankers Association. In addition to industry-related work, Mr. Reuter has served on the boards of numerous nonprofits including: the American Cancer Society of Colorado's CEOs Against Cancer; Women's Foundation of Colorado; Special Olympics of Colorado; Ability Connection Colorado; Blind Institute of Technology; and Cerebral Palsy of Colorado. Additionally, Mr. Reuter currently serves as Chair of the First Interstate BancSystem Foundation Board of Directors. Mr. Reuter has a Bachelor's degree in Finance from Luther College in Decorah, Iowa, and attended the Graduate School of Banking at the University of Wisconsin.

Mr. David P. Della Camera previously served as Deputy Chief Financial Officer from May 2024 to June 2025, where he was responsible for the Company's financial planning and analysis, investor relations, and certain strategic initiatives. Mr. Della Camera also served in roles at the Company including Director of Corporate Development and Financial Strategy from 2023 to 2024, Director of Financial Planning & Analysis from 2022 to 2023 and Senior Financial Manager from 2021 to 2022. Prior to joining the Company, Mr. Della Camera served in various roles at banking and financial institutions, including most recently serving as Vice President, Corporate Development and Strategic Planning for People's United Financial, Inc. from 2019 to 2021, where he was responsible for, among other things, supporting Executive management on a variety of corporate development initiatives and analyzing enterprise-wide financial performance. Prior to its acquisition by M&T Bank Corporation, People's United Financial, Inc. was a bank holding company that provided commercial banking, retail and business banking and wealth management services to individual, corporate and municipal customers. Mr. Della Camera's career also includes tenures with Discover Financial Services and United Financial Bancorp, Inc. Mr. Della Camera is a Chartered Financial Analyst (CFA) chartered through the CFA Institute and holds a Bachelor of Science degree in Economics-Finance from Bentley University.

Ms. Lori A. Meyer served as the Company's interim Chief Information Officer from June 2023 to November 2023. Ms. Meyer previously served in several leadership roles for the Company, including Director of Enterprise Planning from 2021 to 2023, Director of Enterprise Program Management from 2018 to 2021, Director of IT Business Management from 2017 to 2018, Director of IT Business Relations from 2016 to 2017, and Business Process Improvement Lead from 2013 to 2016. Ms. Meyer also managed the Bank's Operations Branch Support Division from 2007 to 2013. Ms. Meyer is a graduate of Montana State University Billings with a bachelor's degree in psychology and was recognized by the Billings Gazette as a 40 Under 40 recipient. She is Lean Six Sigma certified in process improvement/agile experience and is a graduate of the Bank Operations Institute in Dallas, Texas. An active community volunteer, Ms. Meyer regularly volunteers with Special Olympics and is passionate about supporting programs that help teens combat hunger, homelessness, and mental health challenges.

Stephen B. Bowman Mr. Bowman served as Chief Financial Officer of The Northern Trust Corporation, a global financial institution, from 2014 until his retirement in 2020. As CFO, Mr. Bowman was responsible for the company's Global Finance function including Controller's group, Financial Planning and Analysis, Tax, Investor Relations, Treasury, Capital Adequacy, Business Unit Finance, Corporate Real Estate, Procurement, Fee Billing, and Finance Technology. Prior to his CFO role, Mr. Bowman served in various leadership positions at The Northern Trust Corporation, including Chief Human Resources Officer and CEO of Northern Trust's European region and North American region. Mr. Bowman is a National Trustee of Miami University and serves as the Chair of the Investment Subcommittee. Mr. Bowman also serves on the board of directors for Glenwood Academy, FNZ Trust Company, and Commonwealth Edison Company. Mr. Bowman has a Bachelor's degree from Miami University, and an M.B.A. from DePaul University. Additional Current Public Company Board Memberships Voya Financial, Inc. (Audit, Risk, and Technology Committee member)

Mr. Rykhus retired as President and Chief Executive Officer of Raven Industries in 2021 after serving in that role for 11 years and for the company for 31 years in leadership positions. Raven was a publicly held corporation that serves the precision agriculture, high performance specialty films, and situational awareness markets, and was acquired by CNHi at the time of Mr. Rykhus' retirement as CEO. Under Mr. Rykhus's leadership, the company transformed from an industrial company to a growing technology driven organization. Mr. Rykhus currently serves on the boards of directors of several non-profit organizations and advises other businesses. Mr. Rykhus has a Bachelor's degree from University of Minnesota, and an M.B.A. from Colorado State University. Other Public Company Board Memberships Within the Last Five Years Raven Industries and Great Western Bancorp (Compensation (Chair) Executive, Audit, and Governance committees)

Joyce A. Phillips During a 30-year career, Ms. Phillips has led significant businesses including retail banking, credit cards, insurance, and wealth management. Ms. Phillips is Founder and CEO of EqualFuture Corp., a FinTech startup based in San Francisco, that delivers affordable personal financial wellness via a SaaS model to individuals and businesses. Prior executive roles include Group Managing Director M&A, Chief Marketing and Innovation Officer, and CEO of Australia and New Zealand Banking Group Limited's (ANZ) Global Wealth Division. Prior to joining ANZ, Ms. Phillips was President and Chief Operating Officer at American Life Insurance Company (ALICO), a global subsidiary of American International Group, Inc. Ms. Phillips previously held senior executive roles for Citigroup including Head of International Retail Banking. In that role she was responsible for strengthening product and distribution in 42 countries. Ms. Phillips was included in the U.S. Banker 25 Most Powerful Women in Banking and Finance list multiple years and named one of the Top 100 FinTech leaders in Asia. Ms. Phillips also serves on various non-profit boards including Girls Inc. NYC, the Smithsonian National Board, and the First Interstate BancSystem Foundation Board of Directors. Ms. Phillips has a Bachelor's degree from the University at Buffalo and an M.B.A. from NYU Stern School of Business. Other Public Company Board Memberships Within the Last Five Years Katapult Holdings, Inc.(Nominating and CorporateGovernance (Chair) and AuditCommittees), Western Union Company (Compensation and ESG Committees).

David L. Jahnke has been a director since September 2011, and served as Chair of the Board from May 2020 to May 2024 and as Vice Chair of the Board from August 2019 to May 2020. In 2010, Mr. Jahnke completed a 35-year career as a partner of KPMG with a focus on global clients, especially in the financial services industry. Additional Current Public: Radius Recycling, Inc. (Lead Director, Audit, and Nominating and Corporate Governance (Chair) Committees).

Dennis L. Johnson Prior to his retirement in 2020, Mr. Johnson was President and Chief Executive Officer of United Heritage Mutual Holding Company since 2001, and United Heritage Financial Group and United Heritage Life Insurance Company, which are insurance, annuity, and financial products companies, since 1999. Mr. Johnson served as President and Chief Executive Officer of United Heritage Financial Services, a broker-dealer, from 1994-1998 and served as General Counsel of United Heritage Mutual Holding Company and its predecessor and certain of its affiliates from 1983 to 1999. Mr. Johnson also serves on the boards of Northwest Nazarene University Foundation and Fidelity Security Assurance Company. Mr. Johnson is a former trustee of the Public Employees Retirement System of Idaho and is a member of the Idaho Citizens' Committee on Legislative Compensation, appointed by the Idaho Supreme Court. Mr. Johnson has a Bachelor's degree from Northwest Nazarene College, and a Juris Doctor from the University of Idaho. Public company experience as Chair and a director of IDACORP, Inc./Idaho Power Company. Previously, director at Bank of the Cascades. Additional Current Public Company Board Memberships IDACORP, Inc. (Board Chair and Corporate Governance & Nominating Committee Chair).

Ms. Renu Agrawal From 2006 to 2019, Ms. Agrawal served at Wells Fargo in senior executive roles, including Executive Vice President and Chief Operating Officer for its Financial Institutions Group from 2017 to 2019, Executive Vice President and Head of its International Treasury Management business from 2012 to 2017, and Senior Vice President in Corporate Strategy. Earlier, she was COO of ValleyCrest Companies and of Quisic, a venture-backed EdTech firm, and a Principal at McKinsey & Company. She began her career as a scientist at Polaroid. Ms. Agrawal also serves on the board of Neythri, an organization of South Asian professional women and was named to the NACD Directorship 100 in 2024 Ms. Agrawal serves on the boards of Sunrise Produce, a private equity-owned wholesale distributor, and NMI Holdings, Inc. She also served on the board of Woodruff-Sawyer, one of the largest privately held insurance brokerages, where she chaired the Audit and Risk Committee and served on the Compensation Committee until its acquisition by AJ Gallagher & Co. in April 2025. She was also a director of Allvue Systems, a Vista Equity-owned SaaS company. Ms. Agrawal has a Ph.D. in Materials Science and Engineering and an M.B.A. from MIT, as well as a Bachelor of Technology degree from Indian Institute of Technology in Kanpur, India. Additional Current Public Company Board Memberships, NMI Holdings, Inc (Audit and Risk Committees) and Other Public Company Board Memberships Within the Last Five Years Luther Burbank Corporation (Audit and Risk and Nominating and Governance Committees).

Mr. Scudder retired as Executive Chairman of the Board of Old National Bancorp in January 2024, following a 38-year career with Old National Bancorp and First Midwest Bancorp, both of which were publicly traded institutions. He served as Executive Chairman of Old National Bancorp following its merger with First Midwest Bank Corp. in February 2022 and previously served as President and Chief Executive Officer of First Midwest Bank Corp. from 2007 to 2022 and Chief Financial Officer from 2002 to 2007, and, prior to 2002, held enterprise-wide senior leadership responsibilities across financial, operational, risk, and governance functions. Mr. Scudder is a member of the Board of Trustees of DePaul University and currently serves as its Chairman. He is also the Vice Chairman of the Board of Directors for Silver Cross Hospital. He has and continues to serve on a number of organizations and affiliations within the financial services industry and the broader community. Mr. Scudder holds a Bachelor's degree from Illinois Wesleyan University as well as a Master's degree from DePaul University. Other Public Company Board Memberships Within the Last Five Years Old National Bancorp (Executive Chair), First Midwest Bancorp (Chairman and CEO).

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. Mr. Lee, who is 57 years old, has more than 20 years of banking leadership experience in operations, technology, digital banking, information security, marketing and business transformation. From May 2013 until January 2024, Mr. Lee served in several officer roles within Seacoast Banking Corporation of Florida, a financial holding company listed on the Nasdaq Global Select Market (NASDAQ: SBCF), beginning as Chief Marketing Officer until his transition to Chief Digital Officer in May 2019 and subsequent transition to Chief Operations and Technology Officer in March 2021. Since leaving Seacoast Banking Corporation of Florida, from March 2025 to November 2025, Mr. Lee served as an independent strategic consultant to a publicly traded banking institution. Before joining Seacoast Banking Corporation of Florida, Mr. Lee held senior marketing and digital leadership positions with American Express International, Bonnier Corporation, and BGT Partners. Mr. Lee holds a Bachelor of Business Administration degree from the University of Memphis and a Master of Business Administration degree from the University of Florida - Warrington College of Business.

On July 13, 2026, the Board of Directors of First Interstate BancSystem, Inc. appointed Mr. Matthew Ritter to serve as Class II directors on the Board. Mr. Ritter has more than 25 years of finance, real estate, energy and private investment experience. Mr. Ritter is Co-Founder and Principal of KnightBridge Capital, LLC, a private investment firm, and is Principal and Co-Founder of Pinnacle Real Estate Advisors, LLC. Mr. Ritter previously served as Co-Founder of Clear Creek Advisors from 2017 to 2024, as Managing Member of Wolf Resources, LLC from 2016 to 2020 and as a Partner of Arrowhead Energy Partners LLC from 2020 to 2021. From December 2022 to January 2026, Mr. Ritter served as a director of FirstBank Holding Company of Colorado, Inc.

Mr. Nathan R. Jones has led the risk and credit organizations across the entirety of the Company's operations since April 2025 with expertise drawn from more than 25 years in the banking industry. Prior to his current role with First Interstate, Mr. Jones was Chief Credit Officer at Heartland Financial USA, Inc. (HTLF), from July 2020 to January 2025, where he was responsible for leading all aspects of credit and loan operations. Previously, he served as Chief Credit Officer for Fulton Financial Corporation from 2018 to July 2020. His career also includes executive and senior level roles at First Horizon, Marshall and Ilsley, and Bank of America. Mr. Jones has been actively engaged in the industry, having served on the RMA's Mid-Size Bank Advisory Board and Credit Advisory Board. Mr. Jones earned a Bachelor of Arts degree in Psychology and a Master of Business Administration from Southern Methodist University.

Stephen M. Lacy has been a director since February 2022. Mr. Lacy is the retired Chair of Meredith Corporation, a public media and marketing company serving American women. He joined Meredith Corporation in 1998 as Vice President and Chief Financial Officer. He served as Vice President and Chief Financial Officer until 2006 and Chief Executive Officer from 2006 until 2019. He was appointed Chair of Meredith Corporation in 2010 and served until his retirement in November 2020. Mr. Lacy also served on the board of directors of Great Western Bancorp prior to its acquisition by the Company. Mr. Lacy also serves on the board of the Kansas State University Alumni Association, The Community Foundation of Greater Des Moines, and United Way of Central Iowa. Additional Current Public Company Board Memberships: Hormel Foods Corporation (Compensation Committee Chair, Audit Committee).

Mr. Chris L. Shepler has been Executive Vice President and Chief Banking Officer since November 2025 following his role as Executive Vice President and Co-Chief Banking Officer from September 2025 to November 2025. In his role as Co-Chief Banking Officer, he was responsible for the Bank's branches in Colorado, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota and, in his current role, is responsible for all Bank branches. With more than 30 years of leadership experience in commercial, business, wealth, and consumer/small business banking, Mr. Shepler brings a proven track record of driving growth, operational excellence, and client-centric innovation across some of the world's leading financial institutions. Mr. Shepler served as Managing Director and National Commercial Banking Region Coverage Executive at Wells Fargo from 2019 to April 2025, where he led a national team serving over 20,000 clients across four U.S. hubs. Under his leadership, the organization achieved significant gains in client growth, operational efficiency, and risk governance. Prior to Wells Fargo, Mr. Shepler held senior executive roles at HSBC and Bank of America, where he spearheaded enterprise-wide integration initiatives, built high-performing teams, and launched scalable strategies that transformed client engagement and revenue performance. Mr. Shepler holds a Bachelor of Science in Business Administration from the University of Southern California.