Board of Directors

Since August 2014, Mr. Brenneman has been an independent business consultant and advisor. From 2011 until August 2014, Mr. Brenneman served as the President and Chief Executive Officer of Butterball LLC, the largest integrated turkey processing company in the United States and a joint venture of Seaboard Corporation and Maxwell Foods, LLC. Prior to serving as President and Chief Executive Officer, Mr. Brenneman served in various financial and management capacities at Seaboard Corporation, a global agribusiness and transportation company, from 1989 until 2011. Mr. Brenneman served as President and Chief Executive Officer of Seaboard Foods from 2001 until 2011, as Senior Vice- President and Chief Financial Officer of Seaboard Foods from 1999 to 2001, as Senior Vice President, Live Production for Seaboard Foods from 1996 until 1999 and Vice President – Finance and Administration of Seaboard Foods from 1994 to 1996. Prior to joining Seaboard, Mr. Brenneman was an accountant for several years with Arthur Andersen. Mr. Brenneman is a CPA and graduated from Wichita State University. Mr. Brenneman has served on several boards, both for-profit and not-for-profit, and is involved in private equity. Mr. Brenneman previously served on the board of CrossFirst Bank from 2009 until 2012. Currently, he serves on the boards of directors of the Clemens Family Corporation, McKee Foods, Great Lakes Cheese Co., Inc., P&P Optica Inc., New Horizon, T2 Capital Management, Lifesong for Orphans, Inc. and Made to Flourish, Inc.

Mr. Bruce has served as the CEO of Aladdin Petroleum Corporation, an oil and gas exploration and production company since 1993. Mr. Bruce has also served as general counsel for Aladdin Middle-East, Ltd., a private petroleum exploration, production and drilling company, primarily drilling in the Republic of Turkey since 1980 and serves as its Vice Chairman and Executive Vice President. In his legal career, Mr. Bruce was a law partner of Hall, Pike & Bruce from 1980-1988 and held various roles, including partner, managing partner and Of Counsel, at Martin, Pringle, Oliver, Wallace & Bauer, LLP from 1988 until his retirement in January 2022. Mr. Bruce served as corporate counsel for Union Bankshares, Inc., the holding company for Union National Bank of Wichita, for 10 years from 1985 through its acquisition by Commerce Bank in 1995. Mr. Bruce also served as legal counsel for numerous banks in obtaining de novo charters and in connection with sales and acquisitions. Mr. Bruce received a B.A. degree in History from the University of Kansas in 1977 and his law degree from Washburn University School of Law in 1980. He has served on the board of directors of CrossFirst Bank since 2021, Aladdin Petroleum Corporation since 1993, And the board of Aladdin Middle-East, Ltd. Since 1990. Additionally, Mr. Bruce has served on the board for Heartland Community Church since 1993 and is currently serving as the Chairman of the Board of Urban Preparatory Academy of Wichita, which was organized in 2021.

Mr. Caple has held the position of President of Unity Hunt, Inc. (UHI), the company through which the Lamar Hunt Family (the family) oversees its holdings, since January 2011. Additionally, Mr. Caple serves in various roles for the family’s trusts and its portfolio companies. Mr. Caple is also a co-owner of TRL Management, LLC, Farmersville Holdings, LLC, and Hickory Creek Real Estate, LLC. Prior to joining UHI, Mr. Caple served as President of VFT Capital, LP (VFT). Before VFT, Mr. Caple served as President of Novo Networks, Inc., and he previously held legal and management positions with GTE Corporation (now Verizon Communications, Inc., NYSE: VZ), Chancellor Media Corporation (now iHeart Media, Inc., NASDAQ: IHRT), and Marcus Cable, LP (now Charter Communications, Inc., NASDAQ: CHTR). Mr. Caple also practiced law with the firm of Patton, Haltom, Roberts, McWilliams & Greer, LLP. Mr. Caple received his bachelor’s degree from the University of Texas at Dallas and a law degree, cum laude, from the University of Arkansas, where he served as the Managing Editor of the Arkansas Law Review. Among other positions, Mr. Caple currently serves as Chairman of the Board for Hunt Midwest Enterprises, Inc. and Hunt Southwest Real Estate Development, LLC, and as a Board Member for UHI, Hunt Sports, LLC, Placid Holding Company, Inc., and Trinity Hunt Management GP, LLC. Mr. Caple has also been involved with several industry associations and non-profit organizations, including service as a Board Member of the Texas Alternative Investments Association, a Host Committee Member of the Great Investors’ Best Ideas Foundation Investment Symposium, a Board Member of the National Archives Foundation, a Law Committee Member of Campaign Arkansas, and a Centennial Committee Member for the University of Arkansas School of Law.

Mr. Geist has served since June 2014 as President of RAGE Administrative and Marketing Services (“RAMS”), a large franchisee of restaurants. Prior to being appointed President, Mr. Geist served as Real Estate Director at RAMS. Additionally, Mr. Geist has served as Managing Partner of Starwood Investments, L.P. (“Starwood”) since February 2012. Starwood has holdings in securities, real estate, and other investments. Prior to joining RAMS and Starwood, Mr. Geist served as President of Blue Ribbon Technologies, a provider of document imaging and storage, as well as customizable web design. Before joining Blue Ribbon, Mr. Geist was Managing Partner and owner of Zland of Denver, a company that provides integrated web-based applications for the marketing, commerce and operations of business. Mr. Geist has also held various positions for Beauty First, a provider of hair care services and products throughout its chain of stores. Mr. Geist is a partner in Flint Oak Ranch, which is a private hunting resort. Mr. Geist received his B.S. degree from the University of Kansas. He has served on the board of CrossFirst Bank since 2013.

Ms. Grigsby has over 30 years of senior management experience in accounting, treasury, risk management, corporate governance, and corporate finance, primarily in the oil and gas exploration and production industry. Most recently, Ms. Grigsby served as Secretary of Economic Administration for the State of Oklahoma, from March 2021 through November 2022. In this role, Ms. Grigsby oversaw more than 20 state agencies including the Oklahoma Employment Security Commission, the Office of the State Treasurer, the Oklahoma Tax Commission, the Lottery Commission and the State’s Pension and Retirement Systems. Prior to this role, Ms. Grigsby served as Executive Vice President and Chief Financial Officer of Ascent Resources, LLC, an oil and gas exploration and production company located in Oklahoma City, Oklahoma, from 2015 until 2020. Ms. Grigsby previously served as CFO of American Energy –Woodford, LLC and CEO and CFO of American Energy Minerals, LLC from February 2015 to July 2015. Prior to her roles at American Energy, Ms. Grigsby spent almost 19 years with Chesapeake Energy Corporation (NYSE: CHK) and served in various executive roles, including Senior Vice President, Treasurer and Corporate Secretary and Senior Vice President – Corporate and Strategic Planning. Ms. Grigsby is also a principal and co-founder of Amethyst Investments, LLC, a passive financial investment company in Oklahoma City, Oklahoma. Ms. Grigsby currently serves on the board of directors of Silverbow Resources, Inc. (NYSE: SBOW); on the board of directors and audit committee of Cetarus Ltd.; and on the board of directors and investment committee of CompSource Mutual Insurance Company. Ms. Grigsby serves as immediate past chair of the board of directors of the YMCA of Greater Oklahoma City and on the board of directors of the Oklahoma Hall of Fame and the United Way of Central Oklahoma. Ms. Grigsby holds a BS degree in Accounting from Oklahoma State University and an MBA from Oklahoma City University. Ms. Grigsby is a Certified Public Accountant and Chartered Global Management Accountant and is a member of the Oklahoma Society of Certified Public Accountants and the American Institute of Certified Public Accountants. Ms. Grigsby is also National Association of Corporate Directors (NACD) Directorship Certified^TM.

Mr. Hansen has more than 35 years’ experience managing businesses in multiple industries in both North America and Europe. In addition to managing for growth he has also been principally involved in a variety of transaction types, including acquisitions, de-mergers and exits in both the public and private markets. He has been a principal at HCI, LLC since 2011, providing advisory services to mid-sized businesses with an emphasis on management, strategy and investment. Mr. Hansen served as Chief Executive Officer and President of the Enterprise Center in Johnson County, a non-profit venture development organization that provides education, connections to capital, mentoring and office space to Kansas City entrepreneurs, from June 2013 to February 2020. Mr. Hansen has also served as a manager and internal consultant for Murfin Drilling, an oil and gas production company, since November 2013. Prior to his roles with the Enterprise Center in Johnson County and Murfin Drilling, Mr. Hansen was Executive Vice President at Thorn EMI, PLC. Additionally, Mr. Hansen has served as the CEO or Managing Director for four private companies. Mr. Hansen is a graduate of the University of Maine and holds a certificate in Management from Columbia University. He serves as a board member for the Enterprise Center in Johnson County and Matrix Measuring Systems.

Mr. Humphreys has served as Manager and Lead Investor of Triad Marketing Inc. since May 2010 and as Manager and Lead Investor of 410 Investments, LLC since 2007, both of which are focused on commercial real estate and private equity. He also serves as a Managing Partner of 640 Legacy Partners, LLC, which owns and manages commercial real estate and other alternative assets. Mr. Humphreys previously served as Manager of Covenant Hospitality, LLC from February 2011 through May 2016. Mr. Humphreys graduated from the University of Oklahoma, where he studied Marketing. Mr. Humphreys also studied at Denver Seminary and spent eight years as the senior leader of Bridgeway Church in Oklahoma City. Mr. Humphreys previously served on the board of CrossFirst Bank from 2012 until 2018. He is a current board member for 640 Legacy Partners, LLC, Martin Bionics and Humphreys Real Estate Income Fund.

Mr. King is a principal of Luther King Capital Management (“LKCM”), an investment management company. He joined the firm in 2004 and serves as Director of Public Equity Investment Strategies and a portfolio manager. Prior to joining LKCM, Mr. King was an equity analyst at Hester Capital Management and a private equity investment analyst at Pacesetter Capital Group and Crates Thompson Capital. Mr. King graduated with a Bachelor of Arts in English Literature from Princeton University and a Master of Business Administration from the University of Texas at Austin. He also completed the TCU Ranch Management Program. Mr. King holds board positions with St. Mark’s School of Texas, the Investment Advisor Association, Caesar Kleberg Wildlife Research Institute, Texas and Southwestern Cattle Raisers Foundation, LKCM Center for Financial Studies at TCU and the University of Texas MBA Investment Fund. He has also served on the board of CrossFirst Bank since 2018.

Mr. Kuykendall owns and is President of Equipment World, Inc., a construction equipment dealership located in Tulsa, Oklahoma. The business sells equipment across the country and serves a regional area providing rentals, parts and services. Mr. Kuykendall joined the company in 1987 upon his graduation from Oklahoma State University and has spent over 30 years working to build the business. Mr. Kuykendall is involved in various industry associations and has served on the board of the Association of Oklahoma General Contractors. He has served on the board of CrossFirst Bank since 2017.

Mr. Maddox has served as President and CEO of the Company since June 1, 2020, and CEO of the Bank since November 28, 2008. He also served as President of the Bank from November 28, 2008 until July 1, 2022 when the roles of CEO and President of the Bank were split. Prior to joining the Bank, he was a Regional President for Intrust Bank. In this role, he managed Intrust Bank’s operations in Northeast Kansas. Mr. Maddox has over 18 years of banking experience. Mr. Maddox attended the University of Kansas from which he received a business degree in 1991 and a law degree in 1994. While at KU, Mr. Maddox was a four-year basketball letterman and a member of the KU team that won the National Championship in 1988. Mr. Maddox serves on the Kansas City Civic Council. He has served on the board of CrossFirst Bank since 2008. Mr. Maddox’s employment agreement grants him the right to be appointed as a director of the Company and the Bank.

Mr. Rauckman is the owner of, and financial consultant for, Rauckman Advisors, LLC, where he has worked since November 2017. Mr. Rauckman was previously a financial advisor for MoBank (formerly Bank of Kansas City), a subsidiary of BOK Financial Corporation, from February 2015 through May 2016. Prior to joining the Bank of Kansas City, Mr. Rauckman served as the Chief Financial Officer and Treasurer of Garmin Ltd. from January 1999 until December 2014. He was named CFO of the Year by the Kansas City Business Journal in 2008. Mr. Rauckman received a B.S. in Business Administration and an MBA degree in Finance from the University of Kansas. Mr. Rauckman serves as a board member and the audit committee chairman of JE Dunn Construction Group; a board member and the nomination/governance committee chairman of MGP Ingredients, Inc.; and a member of the board of CrossFirst Bank since 2018.

Mr. Robinson has over 34 years of leadership experience in telecommunications infrastructure operations and engineering, technology innovation, corporate security and fraud detection, banking and business risk management. Since March 2006, Mr. Robinson has owned and served as President and CEO of Leadergy Catalyst LLC, a senior leadership and consulting company specializing in emerging technologies, business process development, risk management, operational scalability, and high-performance team development. During this time, he has helped client companies achieve efficiencies through process improvement, and execution excellence consulting. Mr. Robinson has also served in a variety of other senior leadership positions, including Chief Operating Officer of CommLink Technology, President and Chief Operating Officer of Motricity Corp., Division President at TNS, and Vice President International Network for Sprint Corporation. He has served on the board of CrossFirst Bank since its inception in 2007. He also serves on the Board of Colorado Central Telecom as their Chairman, and as a Board member of Sangre De Christo Electric Association.

Mr. Stogner is the President and Owner of Crestview Real Estate, LLC (“Crestview”), which is a full-service commercial real estate company based in Dallas, Texas. Crestview specializes in development, leasing, property management, and asset management of commercial real estate. Mr. Stogner is also a principal in The Cogent Group, LLC, which is an investment company that specializes in net leased investments. Mr. Stogner has served as President of Crestview and as a principal in The Cogent Group, LLC since April 2008. During his career, which has spanned over 30 years in commercial real estate, he has been involved in the development of over seven million square feet of commercial space primarily in the retail shopping center sector of the business. This has included food anchored retail centers, specialty centers and single tenant assets. Mr. Stogner graduated from Baylor University with a B.B.A. in Management, Marketing, and Real Estate and was a football letterman.

Mr. Swinson is CEO of CenTrio Energy, North America’s leading pure-play district energy platform. He joined CenTrio in 2021 and has been driving operational excellence and corporate expansion since the company was acquired in 2021. He is leading the company’s growth in current and new markets and its continued transformation to a sustainable energy-centered district energy platform that empowers customers to pursue carbon-reducing district energy operations across North America. Previously, he held the position of President and CEO of Thermal Energy Corporation (TECO) from 2005 to 2021. The company was named International District Energy Association’s 2019 System of the Year under his leadership. Mr. Swinson is a member of the Alabama Engineering Hall of Fame (2022), the TMC Advisory Board of directors and the TMC Venture Fund Advisory Board of Directors. He has also been a member of the International District Energy Association (IDEA) since 1983 and is the recipient of the Norman R. Taylor Person of the Year Award (2015). He holds a bachelor’s degree in mechanical engineering from Auburn University and a master’s degree in business administration from the Kellogg Graduate School of Management at Northwestern University. He is a licensed professional engineer and is a frequent presenter and publisher on emerging issues in the energy field.