AAON 公司 AAON

Matthew J. Tobolski is the Chief Executive Officer and a Director of AAON, having served as CEO of AAON since May 2025, when he was also elected as a director. Mr. Tobolski leverages the talents of AAON's operations, engineering, sales, marketing and administration teams to drive sustainable growth and continue delivering best-in-class solutions to customers. Prior to this role, Mr. Tobolski served as President and Co-Founder of BASX Solutions from the company's inception in 2013 until AAON acquired BASX in 2021. He served as the President and CEO of Tobolski Watkins Engineering, a structural and earthquake engineering firm, from 2008 to 2017, and as Executive Advisor at Structural Integrity Associates from 2017 to 2020, following the acquisition of Tobolski Watkins Engineering. Mr. Tobolski earned a bachelor's degree in Civil Engineering from the University of Massachusetts Dartmouth, and a master's degree and Ph.D. in Structural Engineering from the University of California San Diego. He is a member of ASHRAE and ASCE, and he is a licensed Civil and Structural Engineer in California, Oregon and Washington.

Gary D. Fields is a Director of AAON and Special Advisor to the Board, elected as a director of AAON in 2015. Gary D. Fields served as President of AAON from November 2016 until January 1, 2024, and served as Chief Executive Officer from May 2020 until May 2025. Mr. Fields has been involved in the HVAC industry for more than 35 years. From 1983 to 2012, Mr. Fields was an HVAC equipment sales representative at (and, from 2002 to 2012, a member of the ownership group of) Texas AirSystems, the largest independent HVAC equipment and solutions provider in the state of Texas, with locations in Dallas, Fort Worth, Houston, Austin, and San Antonio. Mr. Fields has been significantly involved with the Fort Worth, Texas, Chapter of ASHRAE (the American Society of Heating, Refrigerating and Air-Conditioning Engineers), having served as Chairman of various ASHRAE committees and ultimately serving as President of the Society. Mr. Fields is currently an owner and President of GKR Partners LTD, an HVAC business development consulting firm, which provided business development advice and consultation to the Company and its sales representatives from 2013 to 2016.

Casey Kidwell is the Chief Administrative Officer of AAON.

Matthew Shaub is the Executive Vice President and General Manager, BASX Business Unit of AAON.

A.H. McElroy II, P.E., is the Chairman of the Board, an Independent Director of AAON, elected to the Board in 2007. Additionally, the Board elected Mr. McElroy as Independent Chairman of the Board at the 2022 Annual Meeting. Since 1997 Mr. McElroy has served as President, CEO and Chairman of McElroy Manufacturing, Inc., a privately held manufacturing company based in Tulsa, Oklahoma. Since 2002, Mr. McElroy has also served as Chairman of Southern Specialties Co., a privately held specialty sheet metal manufacturer. Since 2016, Mr. McElroy has served on the board of directors of Pryer Aerospace, a privately held Tulsa, Oklahoma, based aerospace structural component and sheet metal manufacturer, and from 2016 to June 2019, served on the Advisory Board of HydroHoist Marine Group, a privately held Claremore, Oklahoma, based boat lift manufacturer. Since 2017, Mr. McElroy has served as a member on the local advisory board of directors of Ascension St. John Health System, a healthcare system in northeastern Oklahoma and Southern Kansas. Mr. McElroy is a graduate of the STAGEN Leadership Academy ILP and ALP, YPO International: Integrated Brand Building, Harvard Business School & YPO: High Profit, Go to Market Program, and Harvard Business School & YPO: Sustainable Market Leadership Program. Mr. McElroy holds a bachelor's degree in Mechanical Engineering from the University of Tulsa.

David R. Stewart is an Independent Director of AAON, elected as a director of AAON in October 2021. Mr. Stewart currently serves as Chief Administrative Officer and Trustee of the Oklahoma Ordnance Works Authority located in Pryor, Oklahoma, an industrial public trust that owns and operates MidAmerica Industrial Park. He was appointed to his current position in December 2012 by former Oklahoma Governor Mary Fallin. MidAmerica Industrial Park consists of 9,000 acres and is home to over 80 companies in diverse industries (including Google, Siemens and Chevron Phillips), employing approximately 4,500 people. MidAmerica Industrial Park is one of the largest industrial parks in the U.S. and top ten in the world with on-site rail, water and electric power. Prior to his current position, Mr. Stewart, a citizen of the Cherokee Nation, served as Chief Executive Officer of Cherokee Nation Businesses, LLC. During his tenure as CEO of Cherokee Nation Businesses, LLC, he helped negotiate the Tribal-State Gaming Compact in 2004 and led the Cherokee Nation's efforts to successfully diversify its business portfolio to include a wide range of non-gaming enterprises employing over 3,500 people. Mr. Stewart earned his Master of Science and Bachelor of Science degrees from Oklahoma State University and is a certified public accountant. Governor Kevin Stitt appointed Mr. Stewart as a member to the Governor's Council of Workforce and Economic Development. He was also appointed by the Governor to the Oklahoma State Board of Career and Technology Education, which provides oversight of the career technical training system in the state of Oklahoma. Mr. Stewart currently is a member of the Board of Directors for the Tulsa Regional Chamber, Executive Committee for Tulsa's Future, and is Chair of the Board of Directors for the Oklahoma Business Roundtable. He also serves on the Board of Directors of the State Chamber of Oklahoma and Tulsa Community College Foundation.

Bruce Ware is an Independent Director of AAON, elected as a director of AAON in October 2021. Mr. Ware is Chairman and CEO of One America Bancorp Inc., a financial institution that he founded to provide niche financial and banking services. Prior thereto, he was a Corporate Vice President at DaVita, where he led growth, partnership, and capital raising activities. Prior to DaVita, Mr. Ware served as Assistant Treasurer of Comstock Resources, an exploration and production company where he oversaw banking relationships, investor relations, human resources, and strategic initiatives. Mr. Ware started his career in the New York office of Donaldson, Lufkin & Jenrette in the investment banking department. He holds an MBA from Harvard Business School, an MA from The University of Texas at Austin, and a BBA in Finance from The University of Mississippi. Mr. Ware also serves on the Board of Directors of Seneca Foods Corporation, where he is a member of the Audit Committee. He previously served on the Board of Directors for Blackhawk Bank of Beloit, Wisconsin, where he was a member of the Audit and Compensation Committees. He is a Trustee of the University of Mississippi Foundation.

Norman H. Asbjornson is a Director of AAON, having served as a director since the company's inception. Norman H. Asbjornson served as Chief Executive Officer of AAON since its inception until May 2020, when he transitioned to the position of Executive Chairman. He retired as Executive Chairman in May 2022. Mr. Asbjornson also served as President of AAON from its inception until November 2016, when the Board of Directors appointed Mr. Gary D. Fields as President. Additionally, Mr. Asbjornson served as the Executive Chairman of the Board of AAON-Oklahoma and Chairman of AAON Coil Products, Inc., both our wholly-owned subsidiaries, until his retirement in May 2022.

On July 28, 2026, the Board of Directors of AAON, Inc. appointed Robert L. Buttermore III, as independent directors to fill the newly created Class III positions, each effective immediately. Mr. Buttermore serves as Senior Vice President and Chief Supply Chain Officer of Rockwell Automation, one of the world's leading industrial automation and digital transformation companies. He is responsible for Rockwell's global manufacturing, sourcing, logistics, customer care, and trade compliance operations. Prior to his current role, he served in a variety of leadership positions spanning general management, global business leadership, Asia-Pacific operations, and commercial growth initiatives. He previously led Rockwell's Power Control business and oversaw strategic expansion initiatives supporting industrial, semiconductor, energy, HVAC, and data center customers. Mr. Buttermore holds a bachelor's degree in mechanical engineering from The Ohio State University.

On April 2, 2026, AAON, Inc. announced a transition in the Chief Financial Officer role. Andy Cheung will join AAON on April 20, 2026, as its Executive Vice President and Chief Financial Officer. Mr. Cheung, age 51, most recently served as Executive Vice President and Chief Financial Officer of a publicly traded manufacturing company, where he served for the past three years. Prior to that, he held senior financial leadership positions for more than 25 years in the HVAC and automotive industries. Mr. Cheung was born in Hong Kong and received his Bachelor of Business Administration in Accounting from Hong Kong University of Science & Technology, and an MBA from the University of Chicago. Mr. Cheung is also a Certified Public Accountant.

On December 1, 2025, AAON, Inc. announced that its Board of Directors has promoted Doug Wichman to the position of Executive Vice President and General Manager of its AAON business unit effective January 1, 2026. Mr. Wichman has been with the Company since 2012, most recently serving as Executive Director of Manufacturing since November 2024. Prior to that, he served as Executive Vice President of AAON Coil Products from 2022 to 2024, AAON's Director of Manufacturing in Tulsa and Plant Manager from 2017 to 2018.

Effective January 1, 2025 Mr. Benson will continue to serve the Company in his new role as AAON Fellow, Solution Sales. During 2024, Mr. Benson served as Vice President of the Company and as President of BASX, and prior thereto and as Co-Founder and Chairman of BASX from 2014 through 2023. From 1993 to 2014, Mr. Benson was President and Founder of Huntair, Inc., and before that held various executive roles in facilities and manufacturing.