Explanatory Note
This Amendment No. 1 supplements and amends the definitive proxy statement on Schedule 14A filed by AAON, Inc.
(the “Company) with the Securities and Exchange Commission on April 8, 2024 (the “Proxy Statement”).
The sole purpose of this Amendment No. 1 is to update the Company’s cover page. The Company inadvertently
checked the 'Preliminary Proxy Statement' box, the Proxy Statement filed on April 8, 2024 was the 'Definitive Proxy
Statement', as such the cover is updated to reflect the current filing.