WICHMAN GORDON DOUGLAS (Vice President) sold 21.4% of their position (3K shares) of AAON, INC. on the open market

Open‑market sale worth $421.2K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

WICHMAN GORDON DOUGLAS

Filed: 5/27/2026ACC: 0001903665-26-000010

InsiderWICHMAN GORDON DOUGLASCIK 1903665

→

IssuerAAON, INC.CIK 824142

Officer· Vice President

Since Jan 2022

-3K

Net shares

Net seller

$421.2K

Total sold

Open market trades

0B · 1S

Total transactions

3K acquired · 6K disposed

Non-Derivative Transactions2

Common Stock, par value $.004

Direct

M · Option Exercise

+3K

Price / share

$27.58

Trade value

$82.74K

% of position

27.3%

5/26/2026

11K→14K

Common Stock, par value $.004

Direct

S · Sale

−3K

Price / share

$140.39

Trade value

$421.17K

% of position

21.4%

5/26/2026

14K→11K

Total

Net shares

+0.00

Net value

-$338.43K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock, par value $.004 Direct	5/26/2026	M · Option Exercise	+3K	$27.58	$82.74K	27.3%	11K	14K
Common Stock, par value $.004 Direct	5/26/2026	S · Sale	−3K	$140.39	$421.17K	21.4%	14K	11K
Total			+0.00		-$338.43K

Derivative Transactions1

Stock Option (Right to Buy)

Direct

M · Option Exercise

Converts to

Common Stock

3K shares

−3K

Strike price

27.58

Held after

21.25K

Exercisable

—

5/26/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Right to Buy) Direct	Common Stock3K shares	5/26/2026	M · Option Exercise	−3K	27.58	—	21.25K

Non-Derivative Holdings (Post-Transaction)1

Common Stock, par value $.004

Indirect

Shares owned4.54K

Total

4.54K indirect4.54K

Security Title	Shares Owned	Ownership Type
Common Stock, par value $.004	4.54K	Indirect
Total	4.54K	4.54K indirect

Derivative Holdings (Post-Transaction)7

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

15.78K

Shares owned

15.78K

Exercise price

29.48

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

6.11K

Shares owned

6.11K

Exercise price

48.91

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

9.46K

Shares owned

9.46K

Exercise price

91.51

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

3.13K

Shares owned

3.13K

Exercise price

79.73

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

1.94K

Shares owned

1.94K

Exercise price

82.39

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

4.26K

Shares owned

4.26K

Exercise price

62.04

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

5.67K

Shares owned

5.67K

Exercise price

36.13

Expiration

—

Exercise window

—

Total

Underlying

46.33K

Owned

46.33K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (Right to Buy) Direct	Common Stock	29.48	—	—	15.78K	15.78K
Stock Option (Right to Buy) Direct	Common Stock	48.91	—	—	6.11K	6.11K
Stock Option (Right to Buy) Direct	Common Stock	91.51	—	—	9.46K	9.46K
Stock Option (Right to Buy) Direct	Common Stock	79.73	—	—	3.13K	3.13K
Stock Option (Right to Buy) Direct	Common Stock	82.39	—	—	1.94K	1.94K
Stock Option (Right to Buy) Direct	Common Stock	62.04	—	—	4.26K	4.26K
Stock Option (Right to Buy) Direct	Common Stock	36.13	—	—	5.67K	5.67K
Total					46.33K	46.33K