144 0001642826 XXXXXXXX LIVE 0000824142 AAON, INC. 000-18953 2425 SOUTH YUKON AVE. TULSA OK 74107 9185832266 Fields Gary D Officer Common Wells Fargo Clearing Services

One North Jefferson Avenue St. Louis MO 63103

19000 2654964.99 81911710 05/29/2026 NASDAQ Common 01/28/2025 RSU's and PSU's Issuer N 19000 01/28/2025 N/A N Gary Fields

2425 South Yukon Avenue Tulsa OK 74107

Aaon, Inc. 05/26/2026 21173 2971365.96 Gary Fields

2425 South Yukon Avenue Tulsa OK 74107

Aaon, Inc. 05/13/2026 19081 2625490.27 Gary Fields

2425 South Yukon Avenue Tulsa OK 74107

Aaon, Inc. 05/12/2026 31271 4192464.58 The shares were acquired from 1/28/2025 to 1/21/2026 via RSU'S and PSU'S 05/29/2026 Gary Fields