On May 27, 2022 (the “Effective Date”), AAON, Inc., an Oklahoma corporation, AAON Coil Products, Inc., a Texas corporation, and BasX, Inc., an Oregon corporation, all wholly-owned subsidiaries of AAON, Inc., a Nevada Corporation (the "Company"), entered into the First Amendment to the Amended and Restated Loan Agreement (collectively, the "Amended Loan Agreement") with the following lenders: BOKF, NA dba Bank of Oklahoma, JPMorgan Chase Bank, N.A., and U.S. Bank, N.A. (collectively, the "Lenders") with BOKF, NA dba Bank of Oklahoma as the administrative agent for the Lenders. The Amended Loan Agreement provides for a $200 million revolving credit facility with the Lenders from the Effective Date with a maturity date on May 27, 2027, and amends the prior $100 million Amended and Restated Loan Agreement with BOKF, NA dba Bank of Oklahoma dated November 24, 2021.