SEC ownership of AAON, INC.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000824142.

Comparable stake leader

WELLINGTON MANAGEMENT GROUP LLP

Disclosed value leader

WELLINGTON MANAGEMENT GROUP LLP

Comparable rows

50/50

Latest evidence

12 May 2026

Top shareholders Insider holders Latest transactions

Public ticker: AAON on Nasdaq
Parsed ownership sources: 13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder: WELLINGTON MANAGEMENT GROUP LLP
Ranking: Comparable ownership first, then disclosed value
Comparable ownership rows: 50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder: WELLINGTON MANAGEMENT GROUP LLP
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date: 12 May 2026
Freshness: Most recent filing date in this holder set
Issuer CIK: 0000824142
Issuer location: Tulsa, OK

Ownership snapshot

Top shareholders of AAON, INC. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

WELLINGTON MANAGEMENT GRO...

Disclosed value leader

WELLINGTON MANAGEMENT GRO...

Comparable rows

50/50

Latest evidence

12 May 2026

13D/G 13F 3/4/5 Lead comparable stake: 10% 13D/G row: WELLINGTON MANAGEMENT GROUP LLP Showing 1-8 of 50 holder rows.

Quick read

WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 10%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.

Comparable ownership Top 5

WELLINGTON MANAGEMENT GROUP LLP 10%

BlackRock, Inc. 7.7%

Caron A. Lawhorn 0.02%

Christopher D. Eason 0.01%

Luke A. Bomer 0%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
WELLINGTON MANAGEMENT GROUP LLP	13D/G 13F Company 13D/G 13F	10%	$765,557,271 8,184,277 shares	+$125,811,300	30 Apr 2026
BlackRock, Inc.	13D/G 13F Company 13D/G 13F	7.7%	$551,489,064 6,271,197 shares	-$71,002,756	31 Mar 2025
Caron A. Lawhorn	3/4/5 Director 3/4/5	0.02%	$1,545,356 18,675 shares	—	12 May 2026
Christopher D. Eason	3/4/5 Former Principal Acct Officer 3/4/5	0.01%	$678,195 6,241 shares mixed-class rows	-$1,021,205	09 Oct 2025
Luke A. Bomer	3/4/5 General Counsel and Secretary 3/4/5	0%	$61,814 747 shares	—	01 Apr 2026
VANGUARD CAPITAL MANAGEMENT LLC	13F Company 13F	3.8%	$256,452,263 3,099,121 shares	—	31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC	13F Company 13F	3.6%	$240,644,530 2,908,091 shares	—	31 Mar 2026
WASATCH ADVISORS LP	13F Company 13F	2.8%	$187,686,765 2,268,118 shares	—	31 Mar 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$24,433,912.

Buys

$519,368

Insiders: 2

Sells

$24,953,280

Insiders: 6

Net

-$24,433,912

Shares: -200,781

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 6,569 Shares: 207,350

Window (months)	Buy shares	Sell shares	Buy value	Sell value	Net value
0-3	0	118,580	$0	$16,321,128	-$16,321,128
3-6	0	37,118	$0	$3,665,241	-$3,665,241
6-9	6,141	30,299	$484,400	$3,187,509	-$2,703,109
9-12	428	21,353	$34,968	$1,779,402	-$1,744,435

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 25 reporting-owner rows connected to AAON, INC.. Open a relationship link for the CIK-to-CIK filing trail.

Rows

Largest Forms 3/4/5 holder

Norman H. Asbjornson

Net 12M change

-$24,433,912

Latest report

02 Jun 2026

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Norman H. Asbjornson	Director, 10%+ Owner	$1,069,045,841			Mixed	29 May 2026
Scott M. Asbjornson	Vice President, Finance & CFO	$104,087,625			Mixed	16 May 2021
Matthew J. Tobolski	Chief Executive Officer, Director	$42,382,402	-$1,082,960	-2.5%	Mixed	13 May 2026
David E. Benson	Fellow, AAON, Inc.	$36,201,959			Mixed	11 Mar 2025
A. H. McElroy II	Director	$21,565,582			Mixed	12 May 2026
Angela E. Kouplen	Director	$6,038,202			Mixed	12 May 2026
Paul K. Lackey Jr.	Director	$4,952,775			Mixed	13 Dec 2021
LeClair Stephen O	Director	$4,825,220			Mixed	12 May 2026
Gary D. Fields	Director	$4,368,144	-$15,640,671	-78%	Mixed	29 May 2026
Rebecca Thompson	Chief Accounting Officer	$4,327,840	-$5,880,953	-58%	Mixed	02 Jun 2026
Gordon D. Wichman	Executive Vice President	$3,791,418	-$421,170	-10%	Mixed	26 May 2026
Stephen E. Wakefield	Principal Engineering Advisor	$2,824,589	+$484,400	+21%	Mixed	30 Jan 2026
Robert Teis	VP, Business Technology	$2,648,718			Mixed	14 Mar 2025
Casey R. Kidwell	Chief Administration Officer	$2,250,890	-$906,321	-29%	Mixed	14 May 2026
Chung Kin Cheung	Chief Financial Officer	$2,003,995			Mixed	20 Apr 2026
Rony D. Gadiwalla	Former - VP, Info. Technology	$1,918,350			Mixed	20 Dec 2022
David R. Stewart	Director	$1,762,493			Mixed	12 May 2026
Caron A. Lawhorn	Director	$1,545,356			Mixed	12 May 2026
Bruce Ware	Director	$1,360,243			Mixed	12 May 2026
Stephen LeClair	Director	$1,146,750			Mixed	11 May 2021

Recent insider transactions for AAON, INC.

Showing up to 300 recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares owned	Date	Ownership
Rebecca Thompson	AAON	Common Stock, par value $.004	Sale	-100%	$606,667	$143.42	-4,230	0	02 Jun 2026	401(k) Plan
Gary D. Fields	AAON	Common Stock, par value $.004	Sale	-55.5%	$2,663,800	$140.20	-19,000	15,252	29 May 2026	Direct
Norman H. Asbjornson	AAON	Common Stock, par value $.004	Gift	-6.83%			-88,000	1,201,290	29 May 2026	Private Foundation
Norman H. Asbjornson	AAON	Common Stock, par value $.004	Gift	-0.87%			-101,441	11,582,401	29 May 2026	Trustee of trusts
Gordon D. Wichman	AAON	Common Stock, par value $.004	Sale	-21.4%	$421,170	$140.39	-3,000	10,997	26 May 2026	Direct
Gordon D. Wichman	AAON	Common Stock, par value $.004	Options Exercise	27.3%			3,000	13,997	26 May 2026	Direct
Gordon D. Wichman	AAON	Stock Option (Right to Buy)	Options Exercise	-12.4%			-3,000	21,250	26 May 2026	Direct
Gary D. Fields	AAON	Common Stock, par value $.004	Sale	-38.2%	$2,971,419	$140.34	-21,173	34,252	26 May 2026	Direct
Gary D. Fields	AAON	Common Stock, par value $.004	Options Exercise	61.8%			21,173	55,425	26 May 2026	Direct
Gary D. Fields	AAON	Stock Option (Right to Buy)	Options Exercise	-100%			-21,173	0	26 May 2026	Direct
Casey R. Kidwell	AAON	Common Stock, par value $.004	Sale	-19%	$436,071	$138.30	-3,153	13,463	14 May 2026	Direct
Casey R. Kidwell	AAON	Common Stock, par value $.004	Options Exercise	25.4%			3,153	15,547	14 May 2026	Direct
Casey R. Kidwell	AAON	Stock Option (Right to Buy)	Options Exercise	-75.2%			-3,153	1,042	14 May 2026	Direct
Matthew J. Tobolski	AAON	Common Stock, par value $.004	Sale	-6.54%	$1,082,960	$135.37	-8,000	114,371	13 May 2026	By spouse, as trustee of trust for benefit of family members
Matthew J. Tobolski	AAON	Common Stock, par value $.004	Tax liability	-2.55%			-467	17,872	13 May 2026	Direct
Gary D. Fields	AAON	Common Stock, par value $.004	Sale	-35.8%	$2,625,546	$137.60	-19,081	34,252	13 May 2026	Direct
Gary D. Fields	AAON	Common Stock, par value $.004	Options Exercise	55.7%			19,081	53,333	13 May 2026	Direct
Gary D. Fields	AAON	Stock Option (Right to Buy)	Options Exercise	-100%			-19,081	0	13 May 2026	Direct
Norman H. Asbjornson	AAON	Common Stock, par value $.004	Award	1.32%			1,290	98,794	12 May 2026	Direct
Bruce Ware	AAON	Common Stock, par value $.004	Award	15%			1,290	9,876	12 May 2026	Direct
David R. Stewart	AAON	Common Stock, par value $.004	Award	15%			1,290	9,876	12 May 2026	Direct
A. H. McElroy II	AAON	Common Stock, par value $.004	Award	1.74%			1,290	75,380	12 May 2026	Direct
LeClair Stephen O	AAON	Common Stock, par value $.004	Award	4.26%			1,290	31,566	12 May 2026	Direct
Caron A. Lawhorn	AAON	Common Stock	Award	7.42%			1,290	18,675	12 May 2026	Direct
Angela E. Kouplen	AAON	Common Stock, par value $.004	Award	3.41%			1,290	39,159	12 May 2026	Direct
Gary D. Fields	AAON	Common Stock, par value $.004	Sale	-47.7%	$4,192,398	$134.07	-31,271	34,252	12 May 2026	Direct
Gary D. Fields	AAON	Common Stock, par value $.004	Options Exercise	107.8%			31,271	60,270	12 May 2026	Direct
Gary D. Fields	AAON	Stock Option (Right to Buy)	Options Exercise	-100%			-31,271	0	12 May 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Sale	-25.9%	$1,321,098	$136.59	-9,672	27,681	07 May 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Options Exercise	34.9%			9,672	37,353	07 May 2026	Direct
Rebecca Thompson	AAON	Stock Option (Right to Buy)	Options Exercise	-100%			-9,672	0	07 May 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Sale	-1.42%	$40,108	$100.27	-400	27,681	27 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Options Exercise	1.45%			400	28,081	27 Apr 2026	Direct
Rebecca Thompson	AAON	Stock Option (Right to Buy)	Options Exercise	-3.97%			-400	9,672	27 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Sale	-44.2%	$2,196,002	$100.21	-21,914	27,681	24 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Options Exercise	380%			21,914	27,681	24 Apr 2026	Direct
Rebecca Thompson	AAON	Stock Option (Right to Buy)	Options Exercise	-69.4%			-21,914	9,672	24 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Sale	-20.8%	$729,929	$100.10	-7,292	27,681	23 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Options Exercise	35.8%			7,292	27,681	23 Apr 2026	Direct
Rebecca Thompson	AAON	Stock Option (Right to Buy)	Options Exercise	-43%			-7,292	9,672	23 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Sale	-7.63%	$228,952	$100.11	-2,287	27,681	21 Apr 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Options Exercise	9.01%			2,287	27,681	21 Apr 2026	Direct
Rebecca Thompson	AAON	Stock Option (Right to Buy)	Options Exercise	-19.1%			-2,287	9,672	21 Apr 2026	Direct
Chung Kin Cheung	AAON	Common Stock, par value $.004	Award	762.4%			15,507	17,541	20 Apr 2026	Direct
Gordon D. Wichman	AAON	Common Stock, par value $.004	Tax liability	-1.41%			-144	10,073	12 Mar 2026	Direct
Matthew J. Tobolski	AAON	Common Stock, par value $.004	Tax liability	-4.22%			-413	9,378	12 Mar 2026	Direct
Rebecca Thompson	AAON	Common Stock, par value $.004	Tax liability	-1.22%			-324	26,142	12 Mar 2026	Direct
Matthew Shaub	AAON	Common Stock, par value $.004	Tax liability	-8.64%			-154	1,629	12 Mar 2026	Direct
Casey R. Kidwell	AAON	Common Stock, par value $.004	Tax liability	-1.42%			-180	12,482	12 Mar 2026	Direct
Casey R. Kidwell	AAON	Common Stock, par value $.004	Sale	-29.2%	$470,250	$90.00	-5,225	12,662	12 Mar 2026	Direct

^* marks a reported price that did not pass the local price check.