# EDGAR Filing Document

**Accession Number:** 0000080420
**File Stem:** 0000080420-26-000078
**Filing Date:** 2026-5
**Character Count:** 63095
**Document Hash:** d9da0d400b9df06e7af791a60e064666
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000080420-26-000078.hdr.sgml**: 20260526

**ACCESSION NUMBER**: 0000080420-26-000078

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 8

**FILED AS OF DATE**: 20260526

**DATE AS OF CHANGE**: 20260526

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** POWELL INDUSTRIES INC
- **CENTRAL INDEX KEY:** 0000080420
- **STANDARD INDUSTRIAL CLASSIFICATION:** SWITCHGEAR & SWITCHBOARD APPARATUS [3613]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 880106100
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12488
- **FILM NUMBER:** 261020829

**BUSINESS ADDRESS:**
- **STREET 1:** 8550 MOSLEY DR
- **STREET 2:** POST OFFICE BOX 12818
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77075
- **BUSINESS PHONE:** 7139446900

**MAIL ADDRESS:**
- **STREET 1:** 8550 MOSLEY DRIVE P O BOX 12818
- **STREET 2:** 8550 MOSLEY DRIVE P O BOX 12818
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77075

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** PROCESS SYSTEMS INC
- **DATE OF NAME CHANGE:** 19780926

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

_________________

**FORM SD**

**Specialized Disclosure Report**

_________________

**Powell Industries, Inc.**

**(Exact name of registrant as specified in its charter)**

_________________

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| | | |
|:---|:---|:---|
| **Delaware** | **001-12488** | **88-0106100** |
| **(State or other jurisdiction of incorporation or organization)** | **(Commission File No.)** | **(I.R.S. Employer Identification No.)** |
| **8550 Mosley Road** | | |
| **Houston, Texas** | | **77075-1180** |
| **(Address of principal executive offices)** | | **(Zip Code)** |

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**Michael W. Metcalf, 713-944-6900**

**(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:

X 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 fiscal year ended 2025.

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**SECTION 1 - Conflict Minerals Disclosure**

**Item 1.01 - Conflict Minerals Report**

&nbsp;&nbsp;&nbsp;&nbsp;Powell Industries, Inc. has included the Conflict Minerals Report as an exhibit to its Form SD for the period from January 1, 2025 to December 31, 2025. Unless the context otherwise indicates, "Powell," "the Company," "we," "us" and "our" refer to Powell Industries, Inc. and its consolidated subsidiaries.

&nbsp;&nbsp;&nbsp;&nbsp;For the year 2025, certain of our operations manufactured, or contracted to manufacture, products for which 3TGs, as defined below, are necessary to their functionality or production ("Covered Products"). Conflict minerals are defined in Section 13(p) as (A) cassiterite, columbite-tantalite (coltan), gold, wolframite, and their derivatives, which are limited to tin, tantalum and tungsten (together with gold, collectively referred to as 3TGs), or (B) any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo ("DRC") or any adjoining country that shares an internationally recognized border with the DRC (the "Covered Countries"). Accordingly, we have conducted a reasonable country of origin inquiry ("RCOI") that was designed to determine whether any of the 3TGs in our Covered Products originated in the Democratic Republic of the Congo or an adjoining country (Angola, Burundi, the Central African Republic, the Republic of the Congo, Rwanda, South Sudan, Tanzania, Uganda or Zambia), or were from recycled or scrap sources.

&nbsp;&nbsp;&nbsp;&nbsp;A summary of our RCOI and steps of due diligence on the source and chain of custody of any 3TGs in our Covered Products is included in our Conflict Minerals Report, which is filed as Exhibit 1.01 to this Form SD. In addition, our Conflict Minerals Policy is publicly available on our company website at <u>powellind.com</u> under the section entitled "Suppliers" and named as "Conflict Minerals Policy Statement."

**Forward-Looking Statements**

&nbsp;&nbsp;&nbsp;&nbsp;The Report contains "forward-looking statements." All statements other than statements of historical fact included in the Report are forward-looking statements. Such forward-looking statements include, but are not limited to, statements related to improvements in its processes and engagement with suppliers, as well as other statements that are not historical facts contained in or incorporated by reference into the Report. Statements that contain words such as "believes," "expects," "anticipates," "intends," "estimates," "continue," "should," "could," "may," "plan," "project," "predict," "potential," "possible," "would," "outlook," "will" or similar expressions are forward-looking statements.

These forward-looking statements speak only as of the date of the Report; we disclaim any obligation to update or revise these statements unless required by applicable law, whether as a result of new information, future events or otherwise; and we caution you not to unduly rely on them. We have based these forward-looking statements on expectations and assumptions of management at the time the statements were made. While our management considers these expectations and

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assumptions to be reasonable, they are inherently subject to significant business, economic, competitive, regulatory and other risks, contingencies and uncertainties that could cause actual results to differ materially from those included in the Report, most of which are difficult to predict and many of which are beyond our control. These risks, contingencies and uncertainties relate to, but are not limited to, the factors detailed in the Report and in our other SEC filings.

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**Item 1.02**&nbsp;&nbsp;&nbsp;&nbsp;**Exhibit.**

We have filed our Conflict Minerals Report as Exhibit 1.01 to this Form SD.

**Item 2.01**&nbsp;&nbsp;&nbsp;&nbsp; **Exhibits.**

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| | |
|:---|:---|
| **<u>Exhibit No.</u>** | **<u>Description</u>** |
| Exhibit 1.01 | <u>[Conflict Minerals Report for the calendar year ended December 31, 2025 as required by Item 1.01 of this Form.](ex1012025conflictmineralsr.htm)</u> |

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**SIGNATURES**

&nbsp;&nbsp;&nbsp;&nbsp;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.

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| | | |
|:---|:---|:---|
| | | POWELL INDUSTRIES, INC |
| Date: May 26, 2026 | By: | /s/ Michael W. Metcalf |
|  |  | Michael W. Metcalf |
|  |  | Executive Vice President |
|  |  | Chief Financial and Principal Accounting Officer |
|  |  | (Principal Financial and Principal Accounting Officer) |

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## Exhibit 1.01

**Exhibit 1.01**

**Conflict Minerals Report**

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

This is the Conflict Minerals Report (this "Report") of Powell Industries, Inc. (referred to herein as "Powell", the "Company", "we", "us" or "our") for calendar year 2025 in accordance with Rule 13p-1 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Please refer to Section 13(p) of the Exchange Act and the general instructions to the Specialized Disclosure Report on Form SD for definitions of certain terms used in this Report, unless otherwise defined herein.

This Report for the year ended December 31, 2025 is presented to comply with Rule 13p-1 under the Exchange Act (the "Rule"). The Rule was adopted by the Securities and Exchange Commission (SEC) to implement reporting and disclosure requirements related to conflict minerals as directed by the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the "Dodd-Frank Act"). The Rule imposes certain reporting obligations on SEC registrants whose manufactured products contain conflict minerals which are necessary to the functionality or production of their products. Conflict Minerals are defined as cassiterite, columbite-tantalite, gold, wolframite, and their derivatives, which are limited to tin, tantalum, tungsten, and gold. For the purposes of this Report, tin, tantalum, tungsten and gold shall be collectively referred to as the 3TGs. These requirements apply to registrants whatever the geographic origin of the conflict minerals and whether or not they fund armed conflict.

**<u>Company Overview</u>**

Powell Industries, Inc. (we, us, our, Powell or the Company) is a Delaware corporation founded by William E. Powell in 1947. Our major subsidiaries, all of which are wholly owned, include Powell Electrical Systems, Inc.; Powell Canada, Inc.; Powell (UK) Limited; and Powell Industries International Limited. Our website is <u>powellind.com</u>. We make available, free of charge on or through our website, copies of our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as is reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission (SEC). Additionally, all of our reports filed with the SEC are available via their website at <u>sec.gov.</u> We have also posted on our company website Powell's Conflict Minerals policy statement at <u>powellind.com</u> under the section entitled "Suppliers" and named as "Conflict Minerals Policy Statement." Unless otherwise expressly stated herein, no documents, third-party materials or references to websites (including Powell's) are incorporated by reference in, or to be considered to be a part of, this Report.

We develop, design, manufacture and service custom-engineered equipment and systems that (1) distribute, control and monitor the flow of electrical energy and (2) provide protection to motors, transformers and other electrically powered equipment. Our principal products include integrated power control room substations (PCRs®), custom-engineered modules, electrical houses (E-Houses), traditional and arc-resistant distribution switchgear and control gear, medium-voltage circuit breakers, monitoring and control communications systems, motor control centers, switches and bus duct systems. These products are designed for application voltages ranging from 480 volts to 38,000 volts.

Our product scope includes designs tested to meet both United States (U.S.) and international standards, under both the American National Standards Institute (ANSI) and International Electrotechnical Commission (IEC). We also provide spare parts, retrofit and retrofill components for existing systems, and replacement circuit breakers for obsolete switchgear no longer produced by the original manufacturer. Our principal services include field service inspection, installation, commissioning, modification and repair services. Products and services are principally sold directly to the end user or to an engineering, procurement and construction (EPC) firm on behalf of the end user.

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Each project is specifically engineered and manufactured to meet the specifications and requirements of the individual customer. We market and sell our products and services, which are typically awarded in competitive bid situations, to a wide variety of customers and governmental agencies spanning diverse markets and geographic regions. Occasionally, our contracts may operate under a consortium or teaming arrangement. Typically, we enter into these arrangements with reputable companies with whom we have previously conducted business. These arrangements are generally made to leverage competitive positioning, or where scale or size dictates the use of such arrangement. We seek to establish long-term relationships with the end users of our systems as well as EPC firms contracted by those end users. We believe that fostering a culture of safety and focusing on customer satisfaction, along with our strong balance sheet, allows us to capitalize on opportunities in the industries we serve.

**<u>Product Description</u>**

Our broad and complex product range may contain conflict minerals within the following components:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Tantalum, used in capacitors,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Tin, used in soldered components,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Tungsten, used in coatings, alloys, heating elements and electrodes,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Gold, used in circuit boards, electrodes and electronic components.

Therefore, Powell conducted a reasonable country of origin inquiry in good faith to determine whether any of the 3TGs in its products originated from Conflict-Affected and High -Risk Areas.

**<u>Description of Reasonable Country of Origin Inquiry (RCOI)</u>**

To determine whether necessary 3TGs in products originated in Conflict-Affected and High-Risk Areas, Powell retained Assent Inc. ("Assent"), a third-party service provider, to assist us in reviewing the supply chain and identifying risks. We identified the scope of our inquiry by first completing a supplier list extraction from our preferred vendor list. This list was then filtered to remove service providers, indirect materials suppliers and inactive suppliers (minimum of one year since last purchase) so that all suppliers surveyed provided items to Powell that were used in final products in the year 2025. Once the in-scope assessment was completed, the list was updated with current contact information. This target list, comprised of 579 suppliers, was then provided to Assent for upload to their Assent Sustainability Manager software system (the "Assent Sustainability Manager").

To trace materials, and demonstrate transparency procured by the supply chain, Powell utilized the Conflict Minerals Reporting Template (CMRT) Version 6.4 or higher to conduct a survey of all in-scope suppliers.

During the supplier survey, the Company contacted suppliers via the Assent Compliance Manager, a software-as-a-service (SaaS) platform provided by Assent that enables users to complete and track supplier communications, and allows suppliers to upload completed CMRTs directly to the platform for validation, assessment and management. The Assent Compliance Manager also provides functionality that meets the OECD Guidance process expectations by evaluating the quality of each supplier response and assigning a health score based on the supplier's declaration of process engagement. Additionally, the metrics provided in this report, as well as the step-by-step process for supplier engagement and upstream due diligence investigations, are managed through this platform.

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Via the Assent Compliance Manager and Assent team, Powell requested that all suppliers complete a CMRT. Training and education to guide suppliers on best practices and the use of this template was included. Assent monitored and tracked all communications in the Assent Compliance Manager for future reporting and transparency. Powell directly contacted suppliers that were unresponsive to Assent's communications during the diligence process and requested these suppliers complete the CMRT and submit it to Assent.

The Company's program continues to include automated data validation on all submitted CMRTs. The goal of data validation is to increase the accuracy of submissions and identify any contradictory answers in the CMRT. This data validation is based on questions within the declaration tab of the CMRT, which helps identify areas that require further classification or risk assessment, as well as understand the due diligence efforts of Tier 1 suppliers. The results of this data validation contribute to the program's health assessment and are shared with the suppliers to ensure they understand areas that require clarification or improvement.

All submitted declaration forms are accepted so that data is retained, but they are classified as valid or invalid based on a set criteria of validation errors (see Appendix III for CMRT validation criteria). Suppliers are contacted regarding invalid forms and are encouraged to correct validated errors to resubmit a valid form. Suppliers are provided with guidance on how to correct these validation errors in the form of feedback to their CMRT submission, training courses, and direct engagement help through Assent's multilingual Supplier Experience team. Since some suppliers may remain unresponsive to feedback, Powell tracks program gaps to account for future improvement opportunities.

As of May 5, 2026, there were 579 suppliers in-scope of the conflict minerals program and 416 provided a completed CMRT. Powell's total response rate for this reporting year was 72%. These metrics are summarized in the table below in order to assess progress over time:

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| | | |
|:---|:---|:---|
| Year | Suppliers in Scope | % Responded |
| RY 2022 | 566 | 64% |
| RY 2023 | 718 | 65% |
| RY 2024 | 648 | 70% |
| RY 2025 | 579 | 72% |

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The below metrics provide a summary of the data collected, number of suppliers in scope and responses.

![image_0.jpg](image_0.jpg)![image_1.jpg](image_1.jpg)

![image_2.jpg](image_2.jpg)

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The below summarizes the status of the smelters or refiners, the level of risk and top source countries.

![image_3.jpg](image_3.jpg)

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![image_4.jpg](image_4.jpg)

**<u>Design of Due Diligence</u>**

Powell's due diligence measures have been designed to conform, in all material respects, with the framework in the Organization for Economic Co-operation and Development ("OECD") Guidance and related supplements. The program aligns with the five steps for due diligence that are described by the OECD Guidance and Powell continues to evaluate market expectations for data collection and reporting to achieve continuous improvement opportunities.

Due diligence requires Powell's necessary reliance on data provided by direct suppliers and third-party audit programs. There is a risk of incomplete or inaccurate data. However, through active risk identification, and risk assessment, as well as continued outreach and process validation, risk gaps can be mitigated. This aligns with industry standards and market expectations for downstream companies' due diligence.

**<u>Due Diligence Performed</u>**

A. <u>Establish Strong Powell Management Systems</u>

In accordance with our due diligence framework and compliance efforts:

•  We have communicated to our in-scope suppliers our efforts to comply with Section 1502 of the Dodd-Frank Act pursuant to a compliance statement, supplier code of conduct and other communications (together, the "Compliance Statement"). We requested that our in-scope suppliers provide a comprehensive conflict minerals declaration for all conflict minerals in the form of the CMRT version 6.4 or higher. We provide our Compliance Statement to all new suppliers and for existing suppliers, communicate the Compliance Statement as part of the business review process.

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•  We implemented internal compliance efforts, including internal reporting requirements, to support our supply chain due diligence process.

•  We implemented a risk mitigation response plan to address business relationships with suppliers that are DRC conflict undeterminable (as defined in Item 1.01(d)(5) of Form SD). Our program includes continuous monitoring to adjust our strategies as sourcing data improves and new information is received.

Powell has adopted a company policy with respect to conflict minerals which is posted on our website at powellind.com, under the Supply Chain section, named "Conflict Minerals Statement" (Conflict-Minerals-Policy.pdf). In addition, the Supplier Code of Conduct emphasizes the requirement that suppliers exercise due diligence in sourcing.

Powell has established a management system for conflict minerals. Our management system is sponsored by the Chief Financial Officer as well as executive-level representatives and a team of subject matter experts from relevant functions, such as our Strategic Sourcing Manager, Corporate Controller, Vice President of Research and Product Development, Trade Compliance and Category Managers.

The team of subject matter experts is responsible for implementing our conflict minerals compliance strategy and senior management is briefed about the results of our due diligence efforts.

*Control Systems*

Controls include, but are not limited to, our code of conduct which outlines expected behaviors for all Powell employees and a conflict minerals policy which can be found on our website under the section entitled "Supply Chain." We rely on our direct suppliers to provide information on the origin of the 3TG contained in components and materials supplied to us – including sources of 3TG that are supplied to them from lower tier suppliers. Contracts with our suppliers are frequently in force for three to five years or more and we cannot unilaterally impose new contract terms and flow-down requirements. As we enter into new contracts, or our contracts renew, we are adding a clause to require suppliers to provide information about the source of 3TG and smelters. It will take a number of years to ensure that all our supplier contracts contain appropriate flow-down clauses. In the meantime, as described below, we are working with selected suppliers to ensure they provide the 3TG sourcing information until the contracts can be amended.

*Supplier Engagement* 

With respect to the OECD requirement to strengthen engagement with suppliers, we have, through Assent, provided education on the conflict minerals regulation. We have leveraged the existing communications within the Company, specifically the procurement department, to encourage supplier interactions with Assent as well as to help suppliers understand the requirement for completion of their CMRTs. Feedback from this engagement has allowed us to enhance the training and focus and adapt it to each user's needs. It has also allowed for our supplier communications to be more focused and to clarify expectations.

*Grievance Mechanisms*

We have multiple longstanding grievance mechanisms whereby employees, contractors, suppliers and agents can report violations of Powell's policies. There are established escalation protocols for reporting grievances internally,

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as well as the EthicsPoint hotline, which is independently managed. Our ethics and reporting Hotline can be found at powellind.ethicspoint.com. Any violations are reported to the Corporate Compliance Officer.

Violations or grievances at the industry level can be reported to the RMI directly as well. This can be done at http://www.responsiblemineralsinitiative.org/responsible-minerals-assurance-process/grievance-mechanism/

*Records Maintenance*

Powell has adopted a policy to retain relevant documentation for a period of five years. Through Assent, a document retention policy has been implemented to retain conflict minerals related documents, including supplier responses to CMRTs and the sources identified within each reporting period. Powell stores all of the information and findings from this process in a shared database that can be audited by internal or external parties.

B. <u>Identify and Assess Risks in Our Supply Chain</u>

*Supplier Risk Evaluation*

Risks associated with Tier 1 suppliers' due diligence processes were assessed by their declaration responses on a CMRT, which the Assent Compliance Manager identifies automatically based on established criteria. These risks are addressed by Assent staff and members of the Company's internal Conflict Minerals Team, who engage with suppliers to gather pertinent data and ask for corrective actions if needed, performing an overall assessment of the supplier's conformity status, which is referred to as "conflict minerals status."

Risks at the supplier level may include non-responsive suppliers or incomplete CMRTs. In cases where a company-level CMRT is submitted, Powell is unable to determine if all of the specified smelters/refiners were used for 3TGs in the products supplied to the Company.

Assent's supplier risk assessment (flagging suppliers' risk as *high, medium, low*) identifies problematic suppliers in a company's supply chain. The risk assessment is derived from the smelter validation process, which establishes risk at the smelter level via an analysis that takes into account multiple conflict minerals factors.

*Smelter Risk Evaluation*

Other supply chain risks were identified by assessing the due diligence practices and audit status of smelters/refiners identified in the supply chain by upstream suppliers that listed mineral processing facilities on their CMRT declarations. Assent's Smelter validation program compared listed facilities into the list of smelters/refiners consolidated by the RMI to ensure that the facilities met the recognized definition of a 3TGs processing facility that was operational during the 2025 calendar year.

Assent determined if the smelter had been audited against a standard in conformance with the OECD Guidance, such as the Responsible Minerals Assurance Process (RMAP). Powell does not have a direct relationship with smelters/refiners, and does not perform direct audits of these entities within their pre-supply chain. Smelters that are conformant to RMAP audit standards are considered to have their sourcing validated as "conflict free or responsibly sourced." In cases where the smelter/refiner's due diligence practices have not been audited against the RMAP standard or they are considered non-conformant by RMAP, further due diligence steps are followed to notify

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suppliers reporting these facilities. Smelters/refiners are actively monitored to proactively identify other risks pertaining to conflict minerals.

Each facility that meets the definition of a smelter or refiner of a 3TG mineral is assessed according to red-flag indicators defined in the OECD Guidance. Assent uses numerous factors to determine the level of risk that each smelter poses to the supply chain by identifying red flags. These factors include:

▸Geographic proximity to Conflict-Affected and High-Risk Areas.

▸Known mineral source country of origin.

▸RMAP audit status.

▸Credible evidence of unethical or conflict sourcing.

▸Peer assessments conducted by credible third-party sources.

▸Sanctions risks

Risk mitigation activities are initiated whenever a supplier's CMRT reports facilities of concern. Through Assent, suppliers with submissions that included any smelters of concern were immediately provided with feedback instructing suppliers to take their own independent risk mitigation actions. Examples include the submission of a product-specific CMRT to better identify the connection to products that they supply to Powell. **Additional escalation may have been necessary to address any continued sourcing from these smelters of concern.** Suppliers are given clear performance objectives within reasonable timeframes with the ultimate goal of progressive elimination of these smelters of concern from the supply chain.

In addition, suppliers are guided to the educational materials on mitigating the risks identified through the data collection process.

Suppliers are also evaluated on program strength, which assists in making key risk mitigation decisions as the program progresses. The criteria used to evaluate the strength of the program is based on certain questions in the CMRT related to the suppliers' conflict minerals practices and policies.

C. <u>Design and Implement a Strategy to Respond to Risks</u>

Together with Assent, Powell developed processes to assess and respond to the risks identified in the supply chain. Powell has a risk management plan, through which the conflict minerals program is implemented, managed, and monitored. As the program progresses, escalations are sent to non-responsive suppliers to outline the importance of a response via CMRTs and to outline the required cooperation for compliance to the conflict minerals rules and the Company's expectations.

<br>Feedback on supplier submissions is given directly to suppliers and educational resources are provided to assist suppliers in corrective action methods or to improve their internal programs. In cases where suppliers have continuously been non-responsive or are not committed to corrective action plans, the Company will assess if replacing that supplier is feasible. The results of the program and risk assessment are shared with the Conflict Minerals Team and the Powell's Leadership Team to ensure transparency within the Company.

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Because of Powell's size, the complexity of its products, and the depth, breadth, and constant evolution of its supply chain, it is difficult to identify parties upstream from its direct suppliers. Powell continues to work with suppliers to identify the upstream sources of the 3TGs through the CMRTs, follow up on invalid responses on the CMRTs, use of a risk-based assessment of identified smelters and assessment of the conflict minerals programs of its suppliers, as described below in this Report. Information and findings from this process are stored in the Assent Sustainability Manager, a database that can be tracked and audited.

We believe that the inquiries and investigations described above represent a reasonable effort to determine the mines or locations of origin of the 3TGs in our applicable products, including (1) seeking information about 3TG smelters and refiners in our supply chain by requesting that our suppliers complete the CMRT, (2) verifying those smelters and refiners with the expanding RMI lists, (3) conducting the due diligence review and (4) obtaining additional documentation and verification, as applicable. As mentioned above, our existing policy related to relevant documentation of our conflict mineral compliance process requires that documentation be retained for a period of at least five years.

D. <u>Implement Targeted Independent Third-Party Due Diligence</u>

Powell does not have a direct relationship with conflict minerals smelters and refiners and, as a result, does not perform or direct audits of these entities within its supply chain. Powell captured smelter and refiner information as part of the CMRT, as some suppliers provided the names of facilities it used as smelters or refiners. Assent compared the facilities identified by the suppliers to the list of smelters maintained by the RMI.

Assent directly engages smelters/refiners that are not currently enrolled in an industry recognized audit/assessment program to encourage their participation and for those smelters/refiners already conformant to the corresponding program's standards, Assent thanks them for their efforts on behalf of its compliance partners. Powell is a signatory of these communications in accordance with the requirements of downstream companies detailed in the OECD Guidance.

E. <u>Report Annually on Supply Chain Due Diligence</u>

We have responded to various customer requests for information regarding our conflict minerals determination.

Powell reports annually on supply chain due diligence by filing a Form SD and a Conflict Minerals Report with the SEC. This report is available on the Investor section of the Company's website at 0000080420-25-000064 \| SD \| Powell Industries, Inc. Information found on or accessed through this website is not considered part of this report and is not incorporated by reference herein. We also disclose our company policy with respect to conflict minerals on our website at <u>powellind.com</u> under the section entitled "Supply Chain" and named as "Conflict Minerals Policy Statement."

**Supply Chain Outreach Results**

Supply chain outreach is required to identify the upstream sources of origin of tin, tantalum, tungsten, and gold. Following the industry standard process, CMRTs are sent to and requested from Tier 1 suppliers, who are expected to follow this process until the smelter and refiner sources are identified. For the 2025 reporting year, Powell received CMRT forms from 72% of the suppliers surveyed. All submitted forms are accepted and classified as valid

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or invalid in order to retain all data. Suppliers were contacted if they submitted invalid forms and were encouraged to resubmit a valid form. As of May 15, 2026, there were 10 invalid or incomplete supplier submissions.

While due diligence is ongoing and the information received continues to improve in quantity and quality, the majority of the responses received provided data at a company or divisional level or did not specify the smelters or refiners used for materials specifically supplied to us. We have decided to disclose validated smelters provided to us by our supply chain. However, we cannot definitively determine whether any of the 3TGs reported by the suppliers were contained in materials supplied to us or to validate that any of these smelters or refiners are actually in our supply chain. As a result, we are unable to identify all smelters and refiners as well as all the countries of origin of the 3TGs that are contained in the applicable products

As of May 15, 2026, Powell validated 333 smelters or refiners identified within its supply chain. If a supplier indicated that the facility was certified as "conflict-free," such status was confirmed by Assent if the facility was listed by the RMI as certified.

&nbsp;&nbsp;&nbsp;&nbsp;

**Supply Chain Outreach Results & Data Transparency**

Supply chain outreach is required to identify the upstream sources of origin of tin, tantalum, tungsten, and gold. Following the industry standard process, CMRTs are sent to and requested from Tier 1 suppliers, who are expected to follow this process until the smelter and refiner sources are identified.

Appendix I includes all smelters/refiners that suppliers listed in completed CMRTs that met the recognized definition of a 3TGs processing facility and were operational during the 2025 calendar year. As is a common practice when requests are sent upstream in the supply chain, those who purchase materials from smelters may not be able to discern exactly which company's product lines the materials may end up in. As a result, those providing the smelters/refiners have the practice to list all smelters/refiners they may purchase from within the reporting period. Therefore, the smelters/refiners (as sources) listed in Appendix I are likely to be more comprehensive than the list of smelters/refiners which actually processed the 3TGs contained in Powell's products.

Suppliers that identified these specific smelters of concern on their CMRT were contacted in accordance with the OECD Guidance, as stipulated in the previous sections.

*Country of Origin*

Appendix II includes an aggregated list of countries of origin from which the reported facilities collectively source 3TGs, based on reasonable identification of country of origin data obtained via Assent's supply chain database. It is understood that over-reporting might occur which could result in Appendix II having more countries than those strictly relevant to the Company's products.

**Steps to Improve Future Due Diligence and Supply Chain Risk Mitigation**

Powell takes the following steps to improve the due diligence conducted to further mitigate any risk that the necessary conflict minerals in its products could benefit armed groups in the Covered Countries:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Reinforce conflict minerals policy statement on website and specified requirements in standard terms and conditions for any new or renewed supplier contracts.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• New and existing suppliers must certify compliance with Powell's Supplier Code of Conduct and Ethics, which includes due diligence for Responsible Sourcing and Fair Labor Standards (requirement implemented in June 2022).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Continue engagement with suppliers and direct them to training resources to increase the response rate and improve the content of the supplier survey responses.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Engage any suppliers found to be supplying Powell with conflict minerals to establish an alternative source of conflict minerals that does not support the conflict in the Covered Countries.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Define and improve best practices and build leverage over its supply chain in accordance with the OECD Guidance.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Smelter Risk Evaluation through Assent, comprehensive and ongoing analysis is conducted by their smelter library manager to assess sourcing risk. The information is then used to provide supplier feedback and conduct outreach with higher risk suppliers.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Following the OECD Guidance process, increase the emphasis on clean and validated smelter and refiner information from the supply chain through feedback and detailed smelter analysis.

Based on its due diligence process as of the date of this Report, Powell has found no instances where it was necessary to terminate a supplier contract or to find a replacement supply of any conflict minerals.

**Page 12 of 27**

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**<u>Appendix I: Smelter List</u>**

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| | | | |
|:---|:---|:---|:---|
| <br>**Metal** | <br>**Smelter Name** | **Smelter Facility Location** | <br>**Smelter ID** |
| Tin | EM Vinto | Bolivia (Plurinational State Of) | CID000438 |
| Tin | Fenix Metals | Poland | CID000468 |
| Tin | China Tin Group Co., Ltd. | China | CID001070 |
| Tin | Mineracao Taboca S.A. | Brazil | CID001173 |
| Tin | Minsur | Peru | CID001182 |
| Tin | Operaciones Metalurgicas S.A. | Bolivia (Plurinational State Of) | CID001337 |
| Tin | PT Mitra Stania Prima | Indonesia | CID001453 |
| Tin | PT Timah Tbk Kundur | Indonesia | CID001477 |
| Tin | PT Timah Tbk Mentok | Indonesia | CID001482 |
| Tin | Thaisarco | Thailand | CID001898 |
| Tin | Aurubis Beerse | Belgium | CID002773 |
| Tin | Aurubis Berango | Spain | CID002774 |
| Tungsten | A.L.M.T. Corp. | Japan | CID000004 |
| Gold | Advanced Chemical Company | United States Of America | CID000015 |
| Gold | Aida Chemical Industries Co., Ltd. | Japan | CID000019 |
| Gold | Agosi AG | Germany | CID000035 |
| Gold | Almalyk Mining and Metallurgical Complex (AMMC) | Uzbekistan | CID000041 |
| Gold | AngloGold Ashanti Corrego do Sitio Mineracao | Brazil | CID000058 |
| Gold | Argor-Heraeus S.A. | Switzerland | CID000077 |
| Gold | Asahi Pretec Corp. | Japan | CID000082 |
| Gold | Asaka Riken Co., Ltd. | Japan | CID000090 |
| Tungsten | Kennametal Huntsville | United States Of America | CID000105 |
| Gold | Aurubis AG | Germany | CID000113 |

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**Page 13 of 27**

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| | | | |
|:---|:---|:---|:---|
| Gold | Bangko Sentral ng Pilipinas (Central Bank of the Philippines) | Philippines | CID000128 |
| Gold | Boliden Ronnskar | Sweden | CID000157 |
| Gold | C. Hafner GmbH + Co. KG | Germany | CID000176 |
| Gold | Caridad | Mexico | CID000180 |
| Gold | CCR Refinery - Glencore Canada Corporation | Canada | CID000185 |
| Gold | Cendres + Metaux S.A. | Switzerland | CID000189 |
| Gold | Yunnan Copper Industry Co., Ltd. | China | CID000197 |
| Tungsten | Guangdong Xianglu Tungsten Co., Ltd. | China | CID000218 |
| Tin | Chenzhou Yunxiang Mining and Metallurgy Co., Ltd. | China | CID000228 |
| Gold | Chimet S.p.A. | Italy | CID000233 |
| Tungsten | Chongyi Zhangyuan Tungsten Co., Ltd. | China | CID000258 |
| Gold | Chugai Mining | Japan | CID000264 |
| Tantalum | Guangdong Rising Rare Metals-EO Materials Ltd. | China | CID000291 |
| Tin | Alpha Assembly Solutions Inc | United States Of America | CID000292 |
| Tin | PT Aries Kencana Sejahtera | Indonesia | CID000309 |
| Gold | Daye Non-Ferrous Metals Mining Ltd. | China | CID000343 |
| Gold | DSC (Do Sung Corporation) | Korea, Republic Of | CID000359 |
| Tin | Dongguan Best Alloys Co., Ltd. | China | CID000377 |
| Gold | Dowa | Japan | CID000401 |
| Tin | Dowa | Japan | CID000402 |
| Gold | Eco-System Recycling Co., Ltd. East Plant | Japan | CID000425 |
| Tin | Estanho de Rondonia S.A. | Brazil | CID000448 |
| Tantalum | F&X Electro-Materials Ltd. | China | CID000460 |
| Gold | JSC Novosibirsk Refinery | Russian Federation | CID000493 |
| Tin | Gejiu Non-Ferrous Metal Processing Co., Ltd. | China | CID000538 |
| Tin | Gejiu Zili Mining And Metallurgy Co., Ltd. | China | CID000555 |
| Tungsten | Global Tungsten & Powders LLC | United States Of America | CID000568 |
| Tantalum | XIMEI RESOURCES (GUANGDONG) LIMITED | China | CID000616 |
| Gold | Hangzhou Fuchunjiang Smelting Co., Ltd. | China | CID000671 |

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**Page 14 of 27**

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| | | | |
|:---|:---|:---|:---|
| Gold | LT Metal Ltd. | Korea, Republic Of | CID000689 |
| Gold | Heimerle + Meule GmbH | Germany | CID000694 |
| Gold | Heraeus Metals Hong Kong Ltd. | China | CID000707 |
| Gold | Heraeus Germany GmbH Co. KG | Germany | CID000711 |
| Gold | Hunan Chenzhou Mining Co., Ltd. | China | CID000767 |
| Tungsten | Hunan Jintai New Material Co., Ltd. | China | CID000769 |
| Gold | Hunan Guiyang yinxing Nonferrous Smelting Co., Ltd. | China | CID000773 |
| Gold | HwaSeong CJ CO., LTD. | Korea, Republic Of | CID000778 |
| Gold | Inner Mongolia Qiankun Gold and Silver Refinery Share Co., Ltd. | China | CID000801 |
| Gold | Ishifuku Metal Industry Co., Ltd. | Japan | CID000807 |
| Gold | Istanbul Gold Refinery | Turkey | CID000814 |
| Gold | Japan Mint | Japan | CID000823 |
| Tungsten | Japan New Metals Co., Ltd. | Japan | CID000825 |
| Gold | Jiangxi Copper Co., Ltd. | China | CID000855 |
| Tantalum | JiuJiang JinXin Nonferrous Metals Co., Ltd. | China | CID000914 |
| Tantalum | Jiujiang Tanbre Co., Ltd. | China | CID000917 |
| Gold | Asahi Refining USA Inc. | United States Of America | CID000920 |
| Gold | Asahi Refining Canada Ltd. | Canada | CID000924 |
| Gold | JSC Ekaterinburg Non-Ferrous Metal Processing Plant | Russian Federation | CID000927 |
| Gold | JSC Uralelectromed | Russian Federation | CID000929 |
| Gold | JX Nippon Mining & Metals Co., Ltd. | Japan | CID000937 |
| Tin | Gejiu Kai Meng Industry and Trade LLC | China | CID000942 |
| Gold | Kazakhmys Smelting LLC | Kazakhstan | CID000956 |
| Gold | Kazzinc | Kazakhstan | CID000957 |
| Tungsten | Kennametal Fallon | United States Of America | CID000966 |
| Gold | Kennecott Utah Copper LLC | United States Of America | CID000969 |

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**Page 15 of 27**

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| | | | |
|:---|:---|:---|:---|
| Gold | Kojima Chemicals Co., Ltd. | Japan | CID000981 |
| Gold | Kyrgyzaltyn JSC | Kyrgyzstan | CID001029 |
| Gold | Lingbao Gold Co., Ltd. | China | CID001056 |
| Tantalum | AMG Brasil | Brazil | CID001076 |
| Gold | LS MnM Inc. | Korea, Republic Of | CID001078 |
| Gold | Luoyang Zijin Yinhui Gold Refinery Co., Ltd. | China | CID001093 |
| Gold | Materion | United States Of America | CID001113 |
| Gold | Matsuda Sangyo Co., Ltd. | Japan | CID001119 |
| Tin | Metallic Resources, Inc. | United States Of America | CID001142 |
| Gold | Metalor Technologies (Suzhou) Ltd. | China | CID001147 |
| Gold | Metalor Technologies (Hong Kong) Ltd. | China | CID001149 |
| Gold | Metalor Technologies (Singapore) Pte., Ltd. | Singapore | CID001152 |
| Gold | Metalor Technologies S.A. | Switzerland | CID001153 |
| Gold | Metalor USA Refining Corporation | United States Of America | CID001157 |
| Gold | Metalurgica Met-Mex Penoles S.A. De C.V. | Mexico | CID001161 |
| Tantalum | Metallurgical Products India Pvt., Ltd. | India | CID001163 |
| Tantalum | Mineracao Taboca S.A. | Brazil | CID001175 |
| Gold | Mitsubishi Materials Corporation | Japan | CID001188 |
| Tin | Mitsubishi Materials Corporation | Japan | CID001191 |
| Tantalum | Mitsui Mining and Smelting Co., Ltd. | Japan | CID001192 |
| Gold | Mitsui Mining and Smelting Co., Ltd. | Japan | CID001193 |
| Tantalum | NPM Silmet AS | Estonia | CID001200 |
| Gold | Moscow Special Alloys Processing Plant | Russian Federation | CID001204 |
| Gold | Nadir Metal Rafineri San. Ve Tic. A.S. | Turkey | CID001220 |
| Tin | Jiangxi New Nanshan Technology Ltd. | China | CID001231 |
| Gold | Navoi Mining and Metallurgical Combinat | Uzbekistan | CID001236 |
| Gold | Nihon Material Co., Ltd. | Japan | CID001259 |
| Tantalum | Ningxia Orient Tantalum Industry Co., Ltd. | China | CID001277 |
| Tin | Novosibirsk Tin Combine | Russian Federation | CID001305 |

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**Page 16 of 27**

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| | | | |
|:---|:---|:---|:---|
| Tin | O.M. Manufacturing (Thailand) Co., Ltd. | Thailand | CID001314 |
| Gold | Ohura Precious Metal Industry Co., Ltd. | Japan | CID001325 |
| Gold | OJSC "The Gulidov Krasnoyarsk Non-Ferrous Metals Plant" (OJSC Krastsvetmet) | Russian Federation | CID001326 |
| Gold | MKS PAMP SA | Switzerland | CID001352 |
| Gold | Penglai Penggang Gold Industry Co., Ltd. | China | CID001362 |
| Gold | Prioksky Plant of Non-Ferrous Metals | Russian Federation | CID001386 |
| Gold | PT Aneka Tambang (Persero) Tbk | Indonesia | CID001397 |
| Tin | PT Prima Timah Utama | Indonesia | CID001458 |
| Gold | PX Precinox S.A. | Switzerland | CID001498 |
| Gold | Rand Refinery (Pty) Ltd. | South Africa | CID001512 |
| Tantalum | Yanling Jincheng Tantalum & Niobium Co., Ltd. | China | CID001522 |
| Gold | Royal Canadian Mint | Canada | CID001534 |
| Tin | Rui Da Hung | Taiwan, Province Of China | CID001539 |
| Gold | Sabin Metal Corp. | United States Of America | CID001546 |
| Gold | Samduck Precious Metals | Korea, Republic Of | CID001555 |
| Gold | Samwon Metals Corp. | Korea, Republic Of | CID001562 |
| Gold | SEMPSA Joyeria Plateria S.A. | Spain | CID001585 |
| Gold | Shandong Tiancheng Biological Gold Industrial Co., Ltd. | China | CID001619 |
| Gold | Shandong Zhaojin Gold & Silver Refinery Co., Ltd. | China | CID001622 |
| Gold | Sichuan Tianze Precious Metals Co., Ltd. | China | CID001736 |
| Gold | SOE Shyolkovsky Factory of Secondary Precious Metals | Russian Federation | CID001756 |
| Gold | Solar Applied Materials Technology Corp. | Taiwan, Province Of China | CID001761 |
| Tantalum | Solikamsk Magnesium Works OAO | Russian Federation | CID001769 |
| Gold | Sumitomo Metal Mining Co., Ltd. | Japan | CID001798 |

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**Page 17 of 27**

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| | | | |
|:---|:---|:---|:---|
| Gold | Super Dragon Technology Co., Ltd. | Taiwan, Province Of China | CID001810 |
| Tantalum | Taki Chemical Co., Ltd. | Japan | CID001869 |
| Gold | Tanaka Kikinzoku Kogyo K.K. | Japan | CID001875 |
| Tantalum | Telex Metals | United States Of America | CID001891 |
| Tin | Gejiu Yunxin Nonferrous Electrolysis Co., Ltd. | China | CID001908 |
| Gold | Great Wall Precious Metals Co., Ltd. of CBPM | China | CID001909 |
| Gold | Shandong Gold Smelting Co., Ltd. | China | CID001916 |
| Gold | Tokuriki Honten Co., Ltd. | Japan | CID001938 |
| Gold | Tongling Nonferrous Metals Group Co., Ltd. | China | CID001947 |
| Gold | Torecom | Korea, Republic Of | CID001955 |
| Tantalum | Ulba Metallurgical Plant JSC | Kazakhstan | CID001969 |
| Gold | Umicore S.A. Business Unit Precious Metals Refining | Belgium | CID001980 |
| Gold | United Precious Metal Refining, Inc. | United States Of America | CID001993 |
| Gold | Valcambi S.A. | Switzerland | CID002003 |
| Tin | VQB Mineral and Trading Group JSC | Viet Nam | CID002015 |
| Gold | Western Australian Mint (T/a The Perth Mint) | Australia | CID002030 |
| Tin | White Solder Metalurgia e Mineracao Ltda. | Brazil | CID002036 |
| Tungsten | Wolfram Bergbau und Hutten AG | Austria | CID002044 |
| Tungsten | Xiamen Tungsten Co., Ltd. | China | CID002082 |
| Gold | Yamakin Co., Ltd. | Japan | CID002100 |
| Gold | Yokohama Metal Co., Ltd. | Japan | CID002129 |
| Tin | Yunnan Chengfeng Non-ferrous Metals Co., Ltd. | China | CID002158 |
| Tin | Tin Smelting Branch of Yunnan Tin Co., Ltd. | China | CID002180 |
| Gold | Zhongyuan Gold Smelter of Zhongjin Gold Corporation | China | CID002224 |
| Gold | Gold Refinery of Zijin Mining Group Co., Ltd. | China | CID002243 |
| Gold | Morris and Watson | New Zealand | CID002282 |
| Gold | SAFINA A.S. | Czechia | CID002290 |

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**Page 18 of 27**

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| | | | |
|:---|:---|:---|:---|
| Tungsten | Jiangxi Minmetals Gao'an Non-ferrous Metals Co., Ltd. | China | CID002313 |
| Gold | Umicore Precious Metals Thailand | Thailand | CID002314 |
| Tungsten | Ganzhou Jiangwu Ferrotungsten Co., Ltd. | China | CID002315 |
| Tungsten | Jiangxi Yaosheng Tungsten Co., Ltd. | China | CID002316 |
| Tungsten | Jiangxi Xinsheng Tungsten Industry Co., Ltd. | China | CID002317 |
| Tungsten | Malipo Haiyu Tungsten Co., Ltd. | China | CID002319 |
| Tungsten | Xiamen Tungsten (H.C.) Co., Ltd. | China | CID002320 |
| Tungsten | Jiangxi Gan Bei Tungsten Co., Ltd. | China | CID002321 |
| Tin | Magnu's Minerais Metais e Ligas Ltda. | Brazil | CID002468 |
| Tantalum | Hengyang King Xing Lifeng New Materials Co., Ltd. | China | CID002492 |
| Tungsten | Ganzhou Seadragon W & Mo Co., Ltd. | China | CID002494 |
| Tin | Melt Metais e Ligas S.A. | Brazil | CID002500 |
| Tungsten | Asia Tungsten Products Vietnam Ltd. | Viet Nam | CID002502 |
| Tin | PT ATD Makmur Mandiri Jaya | Indonesia | CID002503 |
| Tantalum | D Block Metals, LLC | United States Of America | CID002504 |
| Tantalum | FIR Metals & Resource Ltd. | China | CID002505 |
| Tantalum | Jiujiang Zhongao Tantalum & Niobium Co., Ltd. | China | CID002506 |
| Tantalum | XinXing HaoRong Electronic Material Co., Ltd. | China | CID002508 |
| Gold | MMTC-PAMP India Pvt., Ltd. | India | CID002509 |
| Gold | KGHM Polska Miedz Spolka Akcyjna | Poland | CID002511 |
| Tantalum | Jiangxi Dinghai Tantalum & Niobium Co., Ltd. | China | CID002512 |
| Tungsten | Hunan Shizhuyuan Nonferrous Metals Co., Ltd. Chenzhou Tungsten Products Branch | China | CID002513 |
| Gold | Fidelity Printers and Refiners Ltd. | Zimbabwe | CID002515 |
| Gold | Singway Technology Co., Ltd. | Taiwan, Province Of China | CID002516 |
| Tin | O.M. Manufacturing Philippines, Inc. | Philippines | CID002517 |
| Gold | Shandong Humon Smelting Co., Ltd. | China | CID002525 |
| Gold | Shenzhen Zhonghenglong Real Industry Co., Ltd. | China | CID002527 |
| Tantalum | KEMET de Mexico | Mexico | CID002539 |
| Tungsten | H.C. Starck Tungsten GmbH | Germany | CID002541 |

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**Page 19 of 27**

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| | | | |
|:---|:---|:---|:---|
| Tungsten | TANIOBIS Smelting GmbH & Co. KG | Germany | CID002542 |
| Tungsten | Masan High-Tech Materials | Viet Nam | CID002543 |
| Tantalum | TANIOBIS Co., Ltd. | Thailand | CID002544 |
| Tantalum | TANIOBIS GmbH | Germany | CID002545 |
| Tantalum | Materion Newton Inc. | United States Of America | CID002548 |
| Tantalum | TANIOBIS Japan Co., Ltd. | Japan | CID002549 |
| Tantalum | TANIOBIS Smelting GmbH & Co. KG | Germany | CID002550 |
| Tungsten | Jiangwu H.C. Starck Tungsten Products Co., Ltd. | China | CID002551 |
| Tantalum | Global Advanced Metals Boyertown | United States Of America | CID002557 |
| Tantalum | Global Advanced Metals Aizu | Japan | CID002558 |
| Gold | Al Etihad Gold Refinery DMCC | United Arab Emirates | CID002560 |
| Gold | Emirates Gold DMCC | United Arab Emirates | CID002561 |
| Gold | International Precious Metal Refiners | United Arab Emirates | CID002562 |
| Tin | CV Ayi Jaya | Indonesia | CID002570 |
| Tin | Electro-Mechanical Facility of the Cao Bang Minerals & Metallurgy Joint Stock Company | Viet Nam | CID002572 |
| Tin | Nghe Tinh Non-Ferrous Metals Joint Stock Company | Viet Nam | CID002573 |
| Gold | T.C.A S.p.A | Italy | CID002580 |
| Gold | REMONDIS PMR B.V. | Netherlands | CID002582 |
| Gold | Fujairah Gold FZC | United Arab Emirates | CID002584 |
| Gold | Shirpur Gold Refinery Ltd. | India | CID002588 |
| Tungsten | Niagara Refining LLC | United States Of America | CID002589 |
| Tin | PT Rajehan Ariq | Indonesia | CID002593 |
| Gold | Korea Zinc Co., Ltd. | Korea, Republic Of | CID002605 |
| Gold | Marsam Metals | Brazil | CID002606 |
| Gold | TOO Tau-Ken-Altyn | Kazakhstan | CID002615 |
| Tungsten | China Molybdenum Tungsten Co., Ltd. | China | CID002641 |

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**Page 20 of 27**

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| | | | |
|:---|:---|:---|:---|
| Tungsten | Hydrometallurg, JSC | Russian Federation | CID002649 |
| Tungsten | Uzbek Refractory and Heat-Resistant Metals | Uzbekistan | CID002660 |
| Tin | PT Cipta Persada Mulia | Indonesia | CID002696 |
| Tin | An Vinh Joint Stock Mineral Processing Company | Viet Nam | CID002703 |
| Tin | Resind Industria e Comercio Ltda. | Brazil | CID002706 |
| Tantalum | Resind Industria e Comercio Ltda. | Brazil | CID002707 |
| Gold | Abington Reldan Metals, LLC | United States Of America | CID002708 |
| Tungsten | Unecha Refractory metals plant | Russian Federation | CID002724 |
| Gold | Shenzhen CuiLu Gold Co., Ltd. | China | CID002750 |
| Tin | Super Ligas | Brazil | CID002756 |
| Gold | Albino Mountinho Lda. | Portugal | CID002760 |
| Gold | SAAMP | France | CID002761 |
| Gold | L'Orfebre S.A. | Andorra | CID002762 |
| Gold | 8853 S.p.A. | Italy | CID002763 |
| Gold | Italpreziosi | Italy | CID002765 |
| Gold | WIELAND Edelmetalle GmbH | Germany | CID002778 |
| Gold | Ogussa Osterreichische Gold- und Silber-Scheideanstalt GmbH | Austria | CID002779 |
| Tantalum | Jiangxi Tuohong New Raw Material | China | CID002842 |
| Tungsten | Moliren Ltd. | Russian Federation | CID002845 |
| Gold | AU Traders and Refiners | South Africa | CID002850 |
| Gold | GGC Gujrat Gold Centre Pvt. Ltd. | India | CID002852 |
| Gold | Modeltech Sdn Bhd | Malaysia | CID002857 |
| Tin | Modeltech Sdn Bhd | Malaysia | CID002858 |
| Gold | Bangalore Refinery | India | CID002863 |
| Gold | Kyshtym Copper-Electrolytic Plant ZAO | Russian Federation | CID002865 |
| Gold | Degussa Sonne / Mond Goldhandel GmbH | Germany | CID002867 |
| Gold | Pease & Curren | United States Of America | CID002872 |
| Gold | JALAN & Company | India | CID002893 |

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**Page 21 of 27**

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| | | | |
|:---|:---|:---|:---|
| Gold | SungEel HiMetal Co., Ltd. | Korea, Republic Of | CID002918 |
| Gold | Planta Recuperadora de Metales SpA | Chile | CID002919 |
| Gold | ABC Refinery Pty Ltd. | Australia | CID002920 |
| Gold | Safimet S.p.A | Italy | CID002973 |
| Tin | Guangdong Hanhe Non-Ferrous Metal Co., Ltd. | China | CID003116 |
| Gold | State Research Institute Center for Physical Sciences and Technology | Lithuania | CID003153 |
| Gold | African Gold Refinery | Uganda | CID003185 |
| Gold | Gold Coast Refinery | Ghana | CID003186 |
| Gold | NH Recytech Company | Korea, Republic Of | CID003189 |
| Tin | Chifeng Dajingzi Tin Industry Co., Ltd. | China | CID003190 |
| Gold | QG Refining, LLC | United States Of America | CID003324 |
| Tin | Tin Technology & Refining | United States Of America | CID003325 |
| Gold | Dijllah Gold Refinery FZC | United Arab Emirates | CID003348 |
| Tin | Dongguan CiEXPO Environmental Engineering Co., Ltd. | China | CID003356 |
| Tin | Ma'anshan Weitai Tin Co., Ltd. | China | CID003379 |
| Tin | PT Masbro Alam Stania | Indonesia | CID003380 |
| Gold | CGR Metalloys Pvt Ltd. | India | CID003382 |
| Gold | Sovereign Metals | India | CID003383 |
| Tin | Luna Smelter, Ltd. | Rwanda | CID003387 |
| Tin | Yunnan Yunfan Non-ferrous Metals Co., Ltd. | China | CID003397 |
| Tungsten | Lianyou Metals Co., Ltd. | Taiwan, Province Of China | CID003407 |
| Tungsten | JSC "Kirovgrad Hard Alloys Plant" | Russian Federation | CID003408 |
| Tin | Precious Minerals and Smelting Limited | India | CID003409 |
| Tin | Gejiu City Fuxiang Industry and Trade Co., Ltd. | China | CID003410 |

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**Page 22 of 27**

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| | | | |
|:---|:---|:---|:---|
| Tungsten | NPP Tyazhmetprom LLC | Russian Federation | CID003416 |
| Tungsten | Hubei Green Tungsten Co., Ltd. | China | CID003417 |
| Gold | Eco-System Recycling Co., Ltd. North Plant | Japan | CID003424 |
| Gold | Eco-System Recycling Co., Ltd. West Plant | Japan | CID003425 |
| Tungsten | Albasteel Industria e Comercio de Ligas Para Fundicao Ltd. | Brazil | CID003427 |
| Tin | PT Mitra Sukses Globalindo | Indonesia | CID003449 |
| Gold | Augmont Enterprises Private Limited | India | CID003461 |
| Gold | Kundan Care Products Ltd. | India | CID003463 |
| Tungsten | Cronimet Brasil Ltda | Brazil | CID003468 |
| Tin | CRM Fundicao De Metais E Comercio De Equipamentos Eletronicos Do Brasil Ltda | Brazil | CID003486 |
| Gold | Emerald Jewel Industry India Limited (Unit 1) | India | CID003487 |
| Gold | Emerald Jewel Industry India Limited (Unit 2) | India | CID003488 |
| Gold | Emerald Jewel Industry India Limited (Unit 3) | India | CID003489 |
| Gold | Emerald Jewel Industry India Limited (Unit 4) | India | CID003490 |
| Gold | K.A. Rasmussen | Norway | CID003497 |
| Gold | Alexy Metals | United States Of America | CID003500 |
| Tin | CRM Synergies | Spain | CID003524 |
| Gold | MD Overseas | India | CID003548 |
| Gold | Metallix Refining Inc. | United States Of America | CID003557 |
| Gold | Metal Concentrators SA (Pty) Ltd. | South Africa | CID003575 |
| Tin | Fabrica Auricchio Industria e Comercio Ltda. | Brazil | CID003582 |
| Tungsten | Fujian Xinlu Tungsten Co., Ltd. | China | CID003609 |
| Tungsten | OOO "Technolom" 2 | Russian Federation | CID003612 |
| Tungsten | OOO "Technolom" 1 | Russian Federation | CID003614 |
| Gold | WEEEREFINING | France | CID003615 |
| Gold | Gold by Gold Colombia | Colombia | CID003641 |
| Tungsten | YUDU ANSHENG TUNGSTEN CO., LTD. | China | CID003662 |
| Gold | Dongwu Gold Group | China | CID003663 |

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**Page 23 of 27**

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| | | | |
|:---|:---|:---|:---|
| Gold | Sam Precious Metals | United Arab Emirates | CID003666 |
| Gold | NOBLE METAL SERVICES | United States Of America | CID003690 |
| Tin | PT Putera Sarana Shakti (PT PSS) | Indonesia | CID003868 |
| Tantalum | 5D Production OU | Estonia | CID003926 |
| Tungsten | Tungsten Vietnam Joint Stock Company | Viet Nam | CID003993 |
| Gold | Coimpa Industrial LTDA | Brazil | CID004010 |
| Tungsten | Nam Viet Cromit Joint Stock Company | Viet Nam | CID004034 |
| Tantalum | PowerX Ltd. | Rwanda | CID004054 |
| Tin | Mining Minerals Resources SARL | Congo, Democratic Republic Of The | CID004065 |
| Tungsten | Lianyou Resources Co., Ltd. | Taiwan, Province Of China | CID004397 |
| Tin | Takehara PVD Materials Plant / PVD Materials Division of MITSUI MINING & SMELTING CO., LTD. | Japan | CID004403 |
| Tungsten | Shinwon Tungsten (Fujian Shanghang) Co., Ltd. | China | CID004430 |
| Tin | Malaysia Smelting Corporation Berhad (Port Klang) | Malaysia | CID004434 |
| Gold | SHENZHEN JINJUNWEI RESOURCE COMPREHENSIVE DEVELOPMENT CO., LTD. | China | CID004435 |
| Tungsten | Philippine Carreytech Metal Corp. | Philippines | CID004438 |
| Gold | TITAN COMPANY LIMITED, JEWELLERY DIVISION | India | CID004491 |
| Gold | GG Refinery Ltd. | Tanzania, United Republic Of | CID004506 |
| Tungsten | KENEE MINING VIETNAM COMPANY LIMITED | Viet Nam | CID004619 |
| Tin | RIKAYAA GREENTECH PRIVATE LIMITED | India | CID004692 |
| Gold | Attero Recycling Pvt Ltd | India | CID004697 |
| Gold | SOLEIL METALS (Chala One Plant) | Peru | CID004704 |
| Gold | SOLEIL METALS (YAKARI Plant) | Peru | CID004705 |
| Gold | Impala Platinum - Platinum Metals Refinery (PMR) | South Africa | CID004714 |

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**Page 24 of 27**

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| | | | |
|:---|:---|:---|:---|
| Tin | Woodcross Smelting Company Limited | Uganda | CID004724 |
| Tin | Global Advanced Metals Greenbushes Pty Ltd. | Australia | CID004754 |
| Gold | Elite Industech Co., Ltd. | Taiwan, Province Of China | CID004755 |
| Tin | Longnan Chuangyue Environmental Protection Technology Development Co., Ltd | China | CID004796 |
| Tungsten | Philippine Bonway Manufacturing Industrial Corporation | Philippines | CID004797 |
| Tantalum | Jiangxi Sanshi Nonferrous Metals Co., Ltd | China | CID004813 |
| Gold | Gasabo Gold Refinery Ltd | Rwanda | CID005006 |
| Tungsten | Jing Yuan Tungsten Technology Co., Ltd. | Taiwan, Province Of China | CID005012 |
| Gold | Minera Titán del Perú SRL (MTP) - Belen Plant | Peru | CID005014 |
| Tungsten | S.P.T. spol.s r.o. | Czechia | CID005068 |
| Tin | P Kay Metal, Inc | United States Of America | CID005189 |
| Tungsten | Tungamoy Metals Inc. | Korea, Republic Of | CID005248 |
| Tin | PT Premium Tin Indonesia | Indonesia | CID000313 |
| Tin | PT Bangka Prima Tin | Indonesia | CID002776 |
| Tin | PT Artha Cipta Langgeng | Indonesia | CID001399 |
| Tin | PT Mitra Graha Raya | Indonesia | CID004685 |
| Tin | Conecsus LLC | United States Of America | CID003504 |

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**Page 25 of 27**

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**<u>Appendix II: Countries of Origin</u>**

Includes: list of countries that declared smelters are known to source from.

![image_5.jpg](image_5.jpg)

**Page 26 of 27**

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**<u>Appendix III: CMRT Declaration Rejection/Approval Criteria</u>**

<u>Assent Sustainability Platform Logic Structure</u>

The following tables map the Assent Sustainability Platform's status outputs and CMRT logic structure when determining supplier conflict mineral statuses as displayed on the dashboard. Using this table, and referencing the CMRT questions listed above, users will be able to determine what answers were provided by their suppliers to earn their conflict minerals statuses.

Dashboard Supplier Response Status

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| | |
|:---|:---|
| Supplier Status | Description |
| Not Submitted | A CMRT has not been submitted by the supplier |
| Complete | A CMRT has been submitted, and is valid and complete |
| Incomplete | A supplier with parts associated to them has submitted a partially completed Product-Level or User-Defined CMRT |
| Invalid Submission | A CMRT has been submitted and deemed invalid based on contradicting responses in the template |
| Out of Scope | The supplier is out of scope for conflict minerals and does not need to be contacted |

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**Page 27 of 27**

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