144 0001863522 XXXXXXXX LIVE 0000824142 AAON, INC. 000-18953 2425 SOUTH YUKON AVE. TULSA OK 74107 9185832266 Eason Christopher Douglas Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

12003 1021241.84 81530676 08/25/2025 NASDAQ Common 08/25/2025 Option Granted - 05/11/2021 Issuer N 7231 08/25/2025 Cash Common 08/25/2025 Option Granted - 03/15/2022 Issuer N 2142 08/25/2025 Cash Common 08/25/2025 Option Granted - 03/06/2023 Issuer N 1185 08/25/2025 Cash Common 08/25/2025 Option Granted - 03/11/2024 Issuer N 596 08/25/2025 Cash Common 08/25/2025 Option Granted - 03/11/2021 Issuer N 549 08/25/2025 Cash Common 08/25/2025 Option Granted - 03/11/2020 Issuer N 300 08/25/2025 Cash Y 08/25/2025 /s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Christopher D. Eason