AAON, Inc. expanded its Board of Directors from nine to eleven members by creating two new Class III positions and appointed Robert L. Buttermore III and Patrick J. Jermain as independent directors effective July 28, 2026. Buttermore, currently Senior Vice President and Chief Supply Chain Officer at Rockwell Automation, joins the Compensation Committee, while Jermain, former CFO of Plexus Corporation, serves on the Audit Committee. The Board simultaneously amended its bylaws to increase the maximum board size to eleven positions. These appointments are part of an ongoing succession process aimed at aligning director expertise with the company's scaling operations and long-term growth strategy in commercial HVAC and mission-critical cooling markets.