AAON, INC. — Director's Dealing 2021

May 18, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AAON, INC. (AAON)
CIK: 0000824142
Period of Report: 2021-05-16

Reporting Person: Asbjornson Scott M (Vice President, Finance & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-16	Common Stock, par value $.004	F	1112	$68.64	Disposed	846726	Direct
2021-05-16	Common Stock, par value $.004	D	1632	$68.64	Disposed	845094	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-16	Stock Option (Right to Buy)	$73.36	D	11349	Disposed	2031-03-11	Common Stock (11349.0)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $.004	540000	Indirect
Common Stock, par value $.004	2741	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$34.1	2022-05-16	Common Stock (6510.0)	6510	Direct
Stock Option (Right to Buy)	$36.95	2022-05-16	Common Stock (15960.0)	15960	Direct
Stock Option (Right to Buy)	$41.37	2022-05-16	Common Stock (69000.0)	69000	Direct
Stock Option (Right to Buy)	$44.22	2030-03-11	Common Stock (34968.0)	34968	Direct

Footnotes

F1: Tax withholding on vesting of Restricted Stock Awards due to retirement, effective May 16, 2021.

F2: Forfeiture of Restricted Stock Award (granted 3/11/2021) due to retirement, effective May 16, 2021.

F3: Date Exercisable (but not exercised) is accelerated upon retirement, effective May 16, 2021.

F4: Expiration date (1 year from retirement) is accelerated upon retirement, effective May 16, 2021.

F5: This stock award was granted (on 3/11/2020) under the Issuer's 2016 Long Term Incentive Plan and is exercisable ratably on each of the first five anniversaries of the date of the grant.

F6: Forfeiture of Stock Option Award (granted 3/11/2021) due to retirement, effective May 16, 2021.