AAON (AAON) CFO discloses 2,034 shares and stock options on Form 3

Rhea-AI Filing Summary

AAON, INC. Chief Financial Officer Cheung Chung Kin filed an initial Form 3 showing his equity holdings in the company. He reports direct ownership of 2,034 shares of Common Stock.

He also holds a stock option covering 5,211 shares of Common Stock with an exercise price of $97.90 per share, expiring on April 20, 2036. According to the award terms, this option was granted under AAON's 2024 Long Term Incentive Plan and vests ratably on each of the first three anniversaries of the grant date.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Cheung Chung Kin

Role Chief Financial Officer

Type	Security	Shares	Price	Value
holding	Stock Option (Right to Buy)	--	--	--
holding	Common Stock, par value $.004	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 5,211 shares (Direct, null); Common Stock, par value $.004 — 2,034 shares (Direct, null)

Footnotes (1)

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Key Figures

Direct common shares: 2,034 shares Option underlying shares: 5,211 shares Option exercise price: $97.90 per share +2 more

5 metrics

Direct common shares 2,034 shares Total common stock directly owned following the reported holdings

Option underlying shares 5,211 shares Common shares underlying stock option (right to buy)

Option exercise price $97.90 per share Exercise price for the stock option granted under 2024 Long Term Incentive Plan

Option expiration date April 20, 2036 Expiration date of the stock option position

Vesting schedule 3 annual tranches Option vests ratably on each of the first three anniversaries of grant

Key Terms

Stock Option (Right to Buy), Long Term Incentive Plan, vests ratably, beneficial ownership

4 terms

Stock Option (Right to Buy) financial

"security_title: "Stock Option (Right to Buy)""

Long Term Incentive Plan financial

"granted under the Issuer's 2024 Long Term Incentive Plan"

A long term incentive plan is a company program that awards executives and key employees bonuses—often in stock, options, or cash—only if the business meets multi-year performance goals. It links management pay to company results—like tying a coach’s bonus to a team’s multi-season record—so investors monitor it for how leaders are motivated, potential share dilution, and signals about the company’s long-term priorities.

vests ratably financial

"is exercisable or vests ratably on each of the first three anniversaries"

beneficial ownership financial

"Form 3 initial beneficial ownership statement for the reporting person"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Cheung Chung Kin

(Last) (First) (Middle)

2425 S YUKON AVE.

(Street)

TULSA OKLAHOMA 74107

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/20/2026

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

3a. Foreign Trading Symbol

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $.004	2,034(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	04/20/2027	04/20/2036	Common Stock	5,211(1)	$97.9	D

Explanation of Responses:

1. This stock award is granted under the Issuer's 2024 Long Term Incentive Plan and is exercisable or vests ratably on each of the first three anniversaries of the date of the grant.

Remarks:

	Chung Kin Cheung	04/30/2026
	** 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 5 (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.
* Form 3: SEC 1473 (03-26)

FAQ

What does AAON (AAON) Chief Financial Officer Cheung Chung Kin report on this Form 3?

Cheung Chung Kin reports his initial beneficial ownership in AAON. He directly holds 2,034 shares of common stock and a stock option over 5,211 shares, giving investors a clear view of his current equity stake and incentive alignment.

How many AAON (AAON) common shares does the CFO directly own on this Form 3?

The CFO directly owns 2,034 shares of AAON common stock. This figure represents his reported direct equity stake as of the Form 3 filing date, separate from any stock options or other derivative awards disclosed in the same filing.

What stock option position does the AAON (AAON) CFO disclose on this Form 3?

He discloses a stock option labeled “Stock Option (Right to Buy)” over 5,211 AAON common shares. The option has a $97.90 exercise price and expires on April 20, 2036, providing long-dated equity exposure tied to AAON’s share performance.

How and when does the AAON (AAON) CFO’s stock option vest?

The stock option vests ratably over three years. It was granted under AAON’s 2024 Long Term Incentive Plan and becomes exercisable in equal portions on each of the first three anniversaries of the grant date, aligning compensation with multi‑year performance.

Is this AAON (AAON) Form 3 showing a new buy or sell transaction by the CFO?

No specific buy or sell transaction is reported; the filing records existing holdings. Form 3 is an initial beneficial ownership statement, listing the CFO’s current common shares and option awards rather than reporting open‑market purchases or sales.