Stock Splits for AAON AAON, Inc

Announce Date	Payable Date	Ex Date	Ratio
08/21/2001	09/28/2001	10/01/2001	3-2
04/25/2002	06/04/2002	06/05/2002	3-2
07/12/2007	08/21/2007	08/22/2007	3-2
05/05/2011	06/13/2011	06/14/2011	3-2
05/22/2013	07/02/2013	07/03/2013	3-2
06/05/2014	07/16/2014	07/17/2014	3-2