Board of Directors

Age: 57
Director Since: 2025
Principal Occupation: Walmart, Inc. (retired)
Experience: Mr. Biggs is the former Executive Vice President and Chief Financial Officer of Walmart, Inc., a global retailer. He held the Chief Financial Officer role from 2016 until June 2022, when he transitioned to the position of Executive Advisor until his retirement in January 2023. Prior to his tenure as Chief Financial Officer of Walmart, Inc., Mr. Biggs served as Chief Financial Officer of Walmart International from 2014 to 2016 and of Walmart U.S. from 2012 to 2014. He also served as Senior Vice President of Operations for Sam’s Club from 2010 to 2012. During his more than 20-year career with Walmart and its affiliates, Mr. Biggs held several other leadership roles, including Chief Financial Officer of Sam’s Club, Senior Vice President of Corporate Finance and Assistant Treasurer, and Senior Vice President of International Strategy and Mergers and Acquisitions. Before joining Walmart in 2000, Mr. Biggs worked in corporate finance and mergers and acquisitions roles with Leggett & Platt, Phillips Petroleum Co., and Price Waterhouse. Additionally, he served as Senior Advisor at Blackstone, an asset management firm, between the years 2023 and 2025.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Current) The Procter & Gamble Company, YUM! Brands, Inc., (Noncurrent) Adobe, Inc.
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) Walton Arts Center
Family Relationships: None

Age: 68
Director Since: 2011
Principal Occupation: American Red Cross of Chicago and Northern Illinois (retired)
Experience:Ms. Edwardson retired as the Chief Executive Officer of the American Red Cross of Chicago and Northern Illinois, a business unit of the American Red Cross, in 2016, a position she held since 2005. She previously served as Senior Vice President and General Counsel for UAL Corporation, a predecessor company to United Airlines Holdings, Inc. She has also been a partner in the law firm of Mayer Brown and the Executive Director of the Illinois Securities Department. Ms. Edwardson is a graduate of Loyola University in Chicago, Illinois, holding degrees in economics and law.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Noncurrent) Duluth Holdings, Inc./Chair of Compensation Committee
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) Lincoln Park Zoo/Board Chair, Rush University Medical Center
Family Relationships: None

Age: 57
Director Since: 2009
Principal Occupation: Alltel Corp. (retired)
Experience: Ms. Gasaway served as Executive Vice President and Chief Financial Officer of Alltel Corp., the Little Rock, Arkansas-based Fortune 500 wireless carrier, from 2006 to 2009. She was part of the executive team that spearheaded publicly traded Alltel’s transition through the largest private equity buyout in the telecom sector and was an integral part of the successful combination of Alltel and Verizon. She also served as Alltel’s Corporate Controller and Principal Accounting Officer from 2002 to 2006. Joining Alltel in 1999, she served as Director of General Accounting, Controller, and Vice President of Accounting and Finance. Prior to joining Alltel, she worked for eight years at Arthur Andersen LLP. Ms. Gasaway has a degree in accounting from Louisiana Tech University and is a Certified Public Accountant.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Current) Genesis Energy, LP/Chair of Audit Committee, (Noncurrent) HanesBrands Inc.
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) Louisiana Tech University Foundation, Louisiana Tech University College of Business Advisory Board, Arkansas Children’s, Inc., Arkansas Children’s Foundation
Family Relationships: None

Age: 58
Director Since: 2021
Principal Occupation: Calpine Corporation (retired)
Experience: Mr. Hill served as Executive Chairman of the Board for Calpine Corporation (Calpine), one of the nation’s largest independent competitive power companies, operating power plants and retail businesses in 22 states and Ontario, Canada until January 2026. Mr. Hill previously led Calpine as its President and Chief Executive Officer from 2014 to 2024, before which he served as Calpine’s President and Chief Operating Officer. Prior to joining Calpine, he was Executive Vice President of NRG Energy and President of NRG Texas, where he was responsible for NRG’s largest regional business. Mr. Hill received his Bachelor of Arts degree from Vanderbilt University magna cum laude and his Master of Business Administration degree from the Amos Tuck School of Dartmouth College, where he was elected an Edward Tuck Scholar.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Current) Service Corporation International
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) The Alfred P. Sloan Foundation, Amos Tuck School of Dartmouth College, Greater Houston Partnership, (Noncurrent) Calpine Corporation, Episcopal High School
Family Relationships: None

Age: 67
Director Since: 1991
Principal Occupation: Hunt Automotive Group
Experience: Mr. Hunt served as an employee of the Company from 1983 through 1997. He is the Managing Member of Progressive Car Finance, a private company that provides financing for automobile dealers, and 71B Auto Auction and 71B Mobile Auto Auction, both private companies engaged in the auction of automobiles, trucks, boats, and other motor vehicles to dealers and the general public in Arkansas and Kansas. A graduate of the University of Arkansas, he has degrees in marketing and transportation.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Current) AmeriTrust Financial Technologies, Inc.
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) The New School, Razorback Foundation
Family Relationships: Son of co-founders J.B. and Johnelle Hunt

Age: 60
Director Since: 2023
Principal Occupation: Navistar, Inc. (retired)
Experience: Mr. Lisboa retired as President and Chief Executive Officer of Navistar, Inc., a global original equipment manufacturer in the transportation industry, in October 2021. Prior to his ultimate leadership role of the company, Mr. Lisboa’s 35-year career with Navistar included management positions in sales and marketing, manufacturing, supply chain, and procurement within both domestic and international operations. Mr. Lisboa is a graduate of Pontifícia Universidade Católica de São Paulo where he received a Bachelor of Science degree in business administration with a marketing specialization.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Current) James Hardie Industries plc/Chairman of People and Remuneration Committee
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) Ascendance Trucks, LLC, Allegiance Trucks, LLC
Family Relationships: None

Age: 63
Director Since: 2002
Principal Occupation: Private Investor
Experience: Mr. Robo is a private investor and former Chairman and Chief Executive Officer of NextEra Energy, Inc., a leading clean energy company, and NextEra Energy Partners, LP, a growth-oriented limited partnership formed by NextEra Energy, Inc. to acquire, manage, and own contracted clean energy projects. Mr. Robo served as Chief Executive Officer of NextEra Energy from 2012 until his retirement in 2022 and as Chairman from 2013 to 2022. Prior to joining NextEra Energy in 2002, Mr. Robo spent ten years at General Electric Company, serving as President and Chief Executive Officer of GE Mexico from 1997 until 1999 and as President and Chief Executive Officer of the GE Capital TIP/ Modular Space division from 1999 until February 2002. From 1984 through 1992, Mr. Robo worked for Mercer Management Consulting. He received a BA summa cum laude from Harvard College and an MBA from Harvard Business School, where he was a Baker Scholar.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): (Current) Kayne Anderson BDC, Inc./Chairman, (Noncurrent) NextEra Energy, Inc., NextEra Energy Partners, LP
Other Directorships – Private Organizations (Prev. 5 Yrs.): (Current) Mayo Clinic
Family Relationships: None

Age: 54
Director Since: 2024
Principal Occupation: J.B. Hunt Transport Services, Inc.
Experience: Ms. Simpson has served as the Company’s President since August 2022 and assumed the additional role of Chief Executive Officer upon Mr. Roberts’s retirement from the position on July 1, 2024. A graduate of the University of Arkansas, Ms. Simpson joined the Company in 1994 as an hourly Customer Service Representative. Prior to being named President, she served as Executive Vice President of People and Human Resources from 2020 to 2022, Chief Commercial Officer from 2017 to 2022, and President of Highway Services from 2017 until 2020. She previously served separately as President of the Company’s Truckload and Integrated Capacity Solutions business segments as well as the Company’s Chief Marketing Officer.
Other Directorships - Publicly Held Companies (Prev. 5 Yrs.): None
Other Directorships - Privately Held Companies (Prev. 5 Yrs.):(Current) Razorback Foundation, (Noncurrent) Mercy Health Foundation NWA
Family Relationships: None