AAON (AAON) EVP has 144 shares withheld to cover stock tax

Rhea-AI Filing Summary

AAON, INC. Executive Vice President Gordon Douglas Wichman reported routine tax-related share dispositions. On March 12, 2026, a total of 144 shares of common stock were withheld at $91.51 per share to satisfy tax obligations, rather than sold on the open market.

After these transactions, he holds 10,073 common shares directly and also reports additional indirect holdings through a 401(k) plan, along with several outstanding stock option awards detailed in the filing.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wichman Gordon Douglas

(Last) (First) (Middle)

2425 S YUKON AVE

(Street)

TULSA OK 74107

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AAON, INC. [ AAON ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Vice President

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $.004	03/12/2026		F		89	D	$91.51(1)	10,128	D
Common Stock, par value $.004	03/12/2026		F		55	D	$91.51(1)	10,073	D
Common Stock, par value $.004								4,526	I	401(k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$27.58							03/11/2020	03/11/2029	Common Stock	24,250		24,250	D
Stock Option (Right to Buy)	$29.48							03/11/2021	03/11/2030	Common Stock	15,780		15,780	D
Stock Option (Right to Buy)	$48.91							03/11/2022	03/11/2031	Common Stock	6,106		6,106	D
Stock Option (Right to Buy)	$36.13							03/15/2023	03/15/2032	Common Stock	5,670		5,670	D
Stock Option (Right to Buy)	$62.04							03/06/2024	03/06/2033	Common Stock	4,261		4,261	D
Stock Option (Right to Buy)	$79.73							03/11/2025	03/11/2034	Common Stock	3,126		3,126	D
Stock Option (Right to Buy)	$82.39							03/11/2026	03/11/2035	Common Stock	1,935		1,935	D

Explanation of Responses:

1. All shares granted/purchased/converted/sold, as applicable, at an exact price. A breakdown is not applicable.

Remarks:

	Gordon D. Wichman	03/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did AAON (AAON) report for Gordon Douglas Wichman?

AAON reported that Executive Vice President Gordon Douglas Wichman had 144 common shares withheld on March 12, 2026, at $91.51 per share. The Form 4 describes these as tax-withholding dispositions, meaning shares were used to cover tax liabilities, not sold in the open market.

How many AAON (AAON) shares does Gordon Douglas Wichman hold after this Form 4?

Following the reported tax-withholding dispositions, Gordon Douglas Wichman directly holds 10,073 AAON common shares. He also has additional indirect holdings through a 401(k) plan and multiple outstanding stock option awards, giving him further potential future exposure to AAON stock beyond his direct share position.

Was the AAON (AAON) insider transaction a sale or tax withholding?

The Form 4 classifies both transactions as code F, meaning shares were withheld to pay taxes. This indicates a tax-withholding disposition, not a discretionary open-market sale. Such events typically occur automatically when equity awards vest or are exercised and generate taxable income.

What price was used for the AAON (AAON) tax-withholding shares?

The 144 AAON common shares used for tax withholding were valued at $91.51 per share on March 12, 2026. This price is used to determine the tax liability satisfied by delivering shares instead of cash, as disclosed in the Form 4 transaction details.

Does Gordon Douglas Wichman still hold AAON (AAON) stock options after this filing?

Yes. The filing lists several outstanding stock option awards on AAON common stock with various exercise prices and expiration dates. These options give him the right to buy shares in the future, supplementing his direct 10,073-share holding and indirect 401(k) plan position disclosed in the report.

How large is the AAON (AAON) insider’s tax-withholding transaction relative to his holdings?

The tax-withholding covered 144 shares, while his direct holdings after the transaction total 10,073 shares. This indicates the disposition is small relative to his remaining position, consistent with a routine tax event tied to equity compensation rather than a significant change in his investment exposure.