# EDGAR Filing Document

**Accession Number:** 0000824142
**File Stem:** 0000824142-26-000037
**Filing Date:** 2026-5
**Character Count:** 6708
**Document Hash:** 6034d47c34414099a06dba8803395582
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000824142-26-000037.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0000824142-26-000037

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260512

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ASBJORNSON NORMAN H
- **CENTRAL INDEX KEY:** 0000903063

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-18953
- **FILM NUMBER:** 26985147

**MAIL ADDRESS:**
- **STREET 1:** AAON INC
- **STREET 2:** 2425 SOUTH YUKON
- **CITY:** TULSA
- **STATE:** OK
- **ZIP:** 74107
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AAON, INC.
- **CENTRAL INDEX KEY:** 0000824142
- **STANDARD INDUSTRIAL CLASSIFICATION:** AIR COND & WARM AIR HEATING EQUIP & COMM & INDL REFRIG EQUIP [3585]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 870448736
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2425 SOUTH YUKON AVE.
- **CITY:** TULSA
- **STATE:** OK
- **ZIP:** 74107
- **BUSINESS PHONE:** 9185832266

**MAIL ADDRESS:**
- **STREET 1:** 2425 SOUTH YUKON AVE.
- **CITY:** TULSA
- **STATE:** OK
- **ZIP:** 74107

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AAON INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DIAMOND HEAD RESOURCES INC
- **DATE OF NAME CHANGE:** 19900808

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>ASBJORNSON NORMAN H<br><sub>(Last) (First) (Middle)</sub><br>AAON INC<br>2425 SOUTH YUKON<br><sub>(Street)</sub><br>TULSA, OK 74107<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-05-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>AAON, INC. [ AAON ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock, par value $.004 | 2026-05-12 |  | A |  | 1290<sup>(1)</sup> | A | $0 | 98794 | D |  |
| Common Stock, par value $.004 |  |  |  |  |  |  |  | 10837 | I | 401(k) Plan |
| Common Stock, par value $.004 |  |  |  |  |  |  |  | 1289290 | I | Private Foundation |
| Common Stock, par value $.004 |  |  |  |  |  |  |  | 11683842 | I | Trustee of trusts |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Stock Option (Right to Buy) | $22.93 |  |  |  |  |  |  | 2022-05-12 | 2027-02-22 | Common Stock | 53805 |  | 53805 | D |  |
| Stock Option (Right to Buy) | $24.63 |  |  |  |  |  |  | 2022-05-12 | 2028-01-02 | Common Stock | 173550 |  | 173550 | D |  |
| Stock Option (Right to Buy) | $27.58 |  |  |  |  |  |  | 2022-05-12 | 2029-03-11 | Common Stock | 285000 |  | 285000 | D |  |
| Stock Option (Right to Buy) | $48.91 |  |  |  |  |  |  | 2022-05-12 | 2031-03-11 | Common Stock | 16429 |  | 16429 | D |  |
| Stock Option (Right to Buy) | $29.48 |  |  |  |  |  |  | 2022-05-12 | 2030-03-11 | Common Stock | 118320 |  | 118320 | D |  |

---

### Footnotes:

(1) This stock award is granted under the Issuer's 2024 Long Term Incentive Plan and is exercisable or vests on the first anniversary of the date of the grant.

**Signature:** Norman H. Asbjornson  
**Date:** 2026-05-14

### Remarks:

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.**