# EDGAR Filing Document

**Accession Number:** 0000824142
**File Stem:** 0000824142-26-000041
**Filing Date:** 2026-5
**Character Count:** 14459
**Document Hash:** 511b1a965e0241b0c671fd9b9f870a2c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000824142-26-000041.hdr.sgml**: 20260529

**ACCESSION NUMBER**: 0000824142-26-000041

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260529

**DATE AS OF CHANGE**: 20260529

**FILER**: 

**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

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-18953
- **FILM NUMBER:** 261044060

**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 SD** 

**Specialized Disclosure Report** 

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| | |
|:---|:---|
| AAON, Inc. | AAON, Inc. |
| (Exact name of registrant as specified in its charter) | (Exact name of registrant as specified in its charter) |
| Nevada | 0-18953 |
| (State or other jurisdiction of incorporation) | (Commission file number) |
| 2425 South Yukon, Tulsa, Oklahoma | 74107 |
| (Address of principal executive offices) | (Zip code) |
| Rebecca Thompson (918) 583-2266 | Rebecca Thompson (918) 583-2266 |
| (Name and telephone number, including area code, of the person to contact in connection with this report.) | (Name and telephone number, including area code, of the person to contact in connection with this report.) |

---

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

✔ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to

December 31, 2025.

Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the reporting period for the fiscal year ended _____.

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**Section 1 - Conflict Minerals Disclosure**

**Item 1.01 Conflict Minerals Disclosure and Report**

A copy of AAON, Inc.'s Conflict Minerals Report is filed as <u>[Exhibit 1.01](aaon2025conflictmineralsre.htm)</u> hereto and is publicly available at <u>aaon.com</u>.

**Item 1.02 Exhibit**

The Conflict Minerals Report required by Item 1.01 is filed as <u>[Exhibit 1.01](aaon2025conflictmineralsre.htm)</u> to this Form SD.

**Section 2 - Resource Extraction Issuer Disclosure**

**Item 2.01 Resource Extraction Issuer Disclosure and Report**

Not applicable.

**Section 3 - Exhibits**

**Item 3.01 Exhibits**

The following exhibit is filed as part of this report:

<u>[Exhibit 1.01](aaon2025conflictmineralsre.htm)</u> - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

---

| | |
|:---|:---|
| AAON, Inc. | |
| (Registrant) | |
| /s/ Andy Cheung | May 29, 2026 |
| Chung Kin Cheung ("Andy Cheung")<br>Chief Financial Officer | (Date) |

---

## Exhibit 1.01

![aaona01a.jpg](aaona01a.jpg)

**AAON, Inc.**

**Conflict Minerals Report**

**For The Year Ended December 31, 2025**

**<u>OVERVIEW</u>**

This report has been prepared by AAON, Inc. (herein referred to as "AAON," the "Company," "we," "us," or "our") pursuant to Rule 13p-1 (the "Rule") promulgated under the Securities Exchange Act of 1934, as amended. Please refer to Rule 13p-1, Form SD and the 1934 Act Release No. 34-67716 for definitions to the terms used in this Report, unless otherwise defined herein. We are engaged in the engineering, manufacturing, marketing, and sale of premium air conditioning and heating equipment consisting of standard, semi-custom, and custom rooftop units, data centers cooling solutions, cleanroom systems, packaged outdoor mechanical rooms, air handling units, makeup air units, energy recovery units, condensing units, geothermal/water-source heat pumps, coils, and controls. We conducted an analysis of our products and found that small quantities of tin, tantalum, tungsten and gold ("3TG") are found in our products.

**<u>DUE DILIGENCE</u>**

**Design of Due Diligence**

Our due diligence measures have been designed to conform, in all material respects, with the due diligence framework presented by the The Organization for Economic Co-operation and Development ("OECD") in the publication OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas: Third Edition, OECD Publishing ("OECD Guidance") and the related Supplements for gold and for tin, tantalum and tungsten. The discussion below provides the applicable OECD Guidance recommendation followed by a summary of our activities in line with the OECD Guidance.

**1. Establish strong company management systems.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;***• Adopt and clearly communicate to suppliers and the public, a company policy for the supply chain of minerals originating from conflict-affected and high risk areas. This policy should incorporate the standards against which due diligence is to be conducted.***

We have adopted a conflict minerals policy related to our sourcing of 3TG, and communicated the policy to suppliers and the public through our website at <u>aaon.com</u>. The policy requires suppliers to perform due diligence and outlines our expectations of suppliers.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;***• Structure internal management to support supply chain due diligence.***

We have established a management team to support supply chain due diligence related to 3TG. Our management team includes individuals from supplier management, engineering, accounting and legal.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;***• Establish a system of controls and transparency over the mineral supply chain.***

As stated above, we have implemented a conflict minerals policy and have established our management team to support supply chain due diligence. Additionally, in 2014, we implemented the The Global e-Sustainability Initiative ("GeSI") and Electronic Industry Citizenship Coalition ("EICC"), known as the EICC-GeSI Conflict Minerals Reporting Template (the "Template"). The Template was developed to facilitate disclosure and communication of information regarding

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smelters and refiners that provide material to a manufacturer's supply chain. It includes questions regarding a direct supplier's conflict-free policy, its due diligence process, and information about its supply chain such as the names and locations of smelters and refiners as well as the origin of 3TG used by those facilities. Utilizing the Template enhances our ability for information gathering and tracking, record maintenance, as well as information sharing regarding smelters and refiners.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;***• Strengthen company engagement with suppliers. A supply chain policy should be incorporated into contracts and/or agreements with suppliers.***

The products that we manufacture typically contain hundreds of parts from many direct suppliers. We have relationships with a vast network of suppliers and there are generally multiple tiers between the 3TG mines and our direct suppliers. Therefore, we must rely on our direct suppliers to work with their upstream suppliers in order that they may provide us with accurate information about the origin of 3TG in the components we purchase.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;***• Establish a company-level, or industry-wide, grievance mechanism as an early warning risk awareness system.***

We have established an email address to allow interested parties to contact us at <u>conflictminerals@aaon.com</u> with any questions or for more information.

**2. Identify and assess risk in the supply chain.**

Because of the complexity of our supply chain, we developed a risk-based approach that focused on our suppliers that we believed were likely to provide us with components and raw materials containing 3TG from the Covered Countries, as defined in the Rule. This was accomplished by the management team reviewing the listing of components and raw materials provided by all suppliers and identifying those components and raw materials that may contain 3TG. As stated above, we implemented the Template to facilitate our due diligence efforts for the current reporting period. We have determined that requesting our suppliers to complete the Template represents our reasonable best efforts to determine the mines or locations of origin of 3TG in our supply chain.

Responses were provided using the Template as well as other forms of communication utilized by the suppliers. We reviewed and evaluated the responses against criteria developed by our management team to determine which required further engagement. The criteria included inconsistent, incomplete and/or inaccurate responses, as well as responses that indicated the supplier potentially sources 3TG from Covered Countries under the Rule.

Our team identified 247 suppliers in the current reporting period based upon the criteria noted above. All of the suppliers were sent the Template (via mail) as well as a cover letter outlining the requirements of the Rule.

Of the 247 suppliers we sent the Template to, we received 43 responses, or a response rate of approximately 17 percent. The majority of responses received provided data at a company level. Of the 43 responses received, based upon review and evaluation against our criteria, we identified 6 suppliers whose response indicated that their company may have supplied components or raw materials containing 3TG that originated in or may have originated in the Covered Countries per the Rule. However, despite the due diligence we have undertaken during the reporting period, based upon the responses obtained, we are unable to determine whether the 3TG represented, that may have originated from the Covered Countries, were incorporated into the components or raw materials supplied to us in 2025. Therefore, we are unable to determine whether any of our products manufactured during the reporting period contained 3TG that originated from the Covered Countries.

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**3. Design and implement a strategy to respond to identified risks.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Senior management is briefed about our due diligence efforts.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We have adopted a conflict minerals policy and implemented a management team for oversight over the conflict minerals process.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We have implemented a risk management plan that outlines the company responses to identified risks.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We engage in regular ongoing risk assessment through our suppliers' data submissions and focus on continuous improvement efforts to improve the return rate of our future survey efforts as well as the completeness and accuracy of our suppliers' responses.

**4. Carry out independent third-party audit of supply chain due diligence at identified points in the supply chain.**

We do not typically have a direct relationship with 3TG smelters and refiners and therefore do not perform or direct audits of these entities. We review public information provided by EICC and GeSI with respect to their Conflict-Free Smelter Program which is updated with such information.

**5. Report on supply chain due diligence.**

This Conflict Minerals Report constitutes our annual report on our 3TG due diligence, is available on our website at <u>aaon.com</u> and is filed with the Securities and Exchange Commission. As described in section 2, despite our due diligence efforts for the calendar year 2025, based upon the responses of our suppliers, we were unable to determine whether the 3TG represented to have originated from the Covered Countries were incorporated into the components or raw materials supplied to us during this reporting period.

**Cautionary Note Concerning Forward-looking Statements**

This report includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "expects", "anticipates", "intends", "plans", "believes", "seeks", "estimates", "should", "will", and variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in such forward-looking statements. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. We undertake no obligations to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise. Important factors that could cause results to differ materially from those in the forward-looking statements include (1) the timing and extent of changes in raw material and component prices, (2) the effects of fluctuations in the commercial/industrial new construction market, (3) the timing and extent of changes in interest rates, as well as other competitive factors during the year, and (4) general economic, market or business conditions.

For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in any forward-looking statements, see "Risk Factors" and "Forward Looking Statements" in AAON's Annual Report on Form 10-K for the most recent fiscal year, as may be revised and updated by AAON's Quarterly Reports on Form 10-Q, and AAON's Current Reports on Form 8-K.

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