# EDGAR Filing Document

**Accession Number:** 0001283699
**File Stem:** 0001193125-26-226593
**Filing Date:** 2026-5
**Character Count:** 27334
**Document Hash:** fb9962bbe2ff1e595f41fc7a73db2bc5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-226593.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001193125-26-226593

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** T-Mobile US, Inc.
- **CENTRAL INDEX KEY:** 0001283699
- **STANDARD INDUSTRIAL CLASSIFICATION:** RADIO TELEPHONE COMMUNICATIONS [4812]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 200836269
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-33409
- **FILM NUMBER:** 26986672

**BUSINESS ADDRESS:**
- **STREET 1:** 12920 SE 38TH STREET
- **CITY:** BELLEVUE
- **STATE:** WA
- **ZIP:** 98006
- **BUSINESS PHONE:** 800-318-9270

**MAIL ADDRESS:**
- **STREET 1:** 12920 SE 38TH STREET
- **CITY:** BELLEVUE
- **STATE:** WA
- **ZIP:** 98006

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** METROPCS COMMUNICATIONS INC
- **DATE OF NAME CHANGE:** 20040315

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM SD** 

**Specialized Disclosure Report** 

## T-MOBILE US, INC.
**(Exact name of registrant as specified in its charter)** 

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| | |
|:---|:---|
| **Delaware** | **1-33409** |
| **(State or other jurisdiction of**<br> **incorporation or organization)** | **(Commission**<br> **File Number)** |
| **12920 SE 38<sup>th</sup> Street Bellevue, Washington** | **12920 SE 38<sup>th</sup> Street Bellevue, Washington** |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** |

---

**Peter Osvaldik, Executive Vice President and Chief Financial Officer, (425) 378-4000** 

**(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:

☒ 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 ____.

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| | |
|:---|:---|
| **Item 1.01.** | **Conflict Minerals Disclosure and Report**  |

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T-Mobile's Conflict Minerals Report for the reporting period January 1, 2025 to December 31, 2025 is provided as Exhibit 1.01 hereto and is available at http://investor.t-mobile.com/financials/sec-filings.

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| | |
|:---|:---|
| **Item 1.02.** | **Exhibit**  |

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The Conflict Minerals Report described in Item 1.01 is filed herewith as Exhibit 1.01.

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| | |
|:---|:---|
| **Item 3.01.** | **Exhibits**  |

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| | |
|:---|:---|
| **Exhibit**<br>**Number** | **Description** |
| 1.01 | [Conflict Minerals Report](d65937dex101.htm) |

---

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**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.

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| | |
|:---|:---|
| **T-MOBILE US, INC.** | **T-MOBILE US, INC.** |
| By: | /s/ Peter Osvaldik |
|  | Peter Osvaldik |
|  | Executive Vice President and Chief Financial Officer |

---

Dated: May 15, 2026

## Exhibit 1.01

**Exhibit 1.01** 

**T-Mobile US, Inc.** 

**Conflict Minerals Report for the Year Ended December 31, 2025** 

This Conflict Minerals Report is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934, as amended (the "Rules"). The Rules require issuers to disclose information regarding the use and origin of conflict minerals necessary for the functionality or production of products manufactured or contracted to be manufactured by such issuers. The Rules define "conflict minerals" as cassiterite, columbite-tantalite, gold, wolframite and their derivatives, which are limited to tin, tantalum, tungsten and gold (referred to collectively as "3TG"). The purpose of the Rules is to identify whether an issuer's use of 3TG may have directly or indirectly financed or benefitted armed groups in the Democratic Republic of Congo and its adjoining countries (the "DRC Region" or "Covered Countries"), even though the use of conflict minerals from Covered Countries is not prohibited under U.S. law.

**Introduction** 

T-Mobile believes its suppliers are a valuable extension of its business and corporate values. T-Mobile's Supplier Code of Conduct outlines expectations around ethical business practices for its suppliers. T-Mobile requires its suppliers to operate in full compliance with laws, rules, regulations, and ethical standards of the country in which they operate or provide products or services. T-Mobile also expects its suppliers to share its commitment to ethical conduct and environmentally responsible business practices while they conduct business with or on behalf of T-Mobile. T-Mobile employs a third-party risk management process to screen for anti-corruption, global sanctions, human rights, and environmental risks before engaging with a supplier. T-Mobile's third-party risk management process continuously monitors current suppliers for supply chain risks.

T-Mobile's suppliers are also required to follow its Responsible Sourcing Guidelines, which set forth the Company's expectations regarding sourcing practices and supply chain due diligence. T-Mobile's Responsible Sourcing Guidelines require suppliers to conduct their own due diligence into the source and chain of custody of any conflict minerals used in products supplied to T-Mobile, provide full transparency of the mineral supply chain back to the mining source by using a robust and verifiable traceability system, adopt a conflict minerals policy and supplier due diligence practices consistent with US law and international standards, respond to T-Mobile's inquiries about conflict minerals and verify their source and chain of custody, and provide information about the specific smelters and refiners that supplied conflict minerals and their countries of origin.

Pursuant to the Rules, T-Mobile undertook to determine whether any products that it manufactured or contracted to manufacture during the calendar year ended December 31, 2025 (the "Reporting Period") contained conflict minerals necessary for the functionality or production of such products. As a result, T-Mobile determined that, during the Reporting Period, T-Mobile contracted to manufacture the following product ("Covered Product") that contains 3TG necessary for the functionality or production of the product:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• SyncUp KIDS Watch 2

Suppliers of 3TG used in the Covered Product either sourced their materials from countries outside the DRC Region or conform to international responsible mineral sourcing standards.

T-Mobile is considered a downstream purchaser in the mineral supply chain because it does not extract, process or refine 3TG and does not have a direct relationship with any 3TG mines, smelters or refiners. As a result, T-Mobile relies on its direct suppliers, who in turn rely on their suppliers, to assist with its reasonable country of origin inquiry and due diligence efforts for the minerals contained in the Covered Product.

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**Reasonable Country of Origin Inquiry** 

In accordance with the Rules, T-Mobile conducted a reasonable country of origin inquiry ("RCOI") to determine whether any of the 3TG in the Covered Product originated in the DRC Region or were from recycled or scrap sources. T-Mobile's RCOI included a review of information provided by T-Mobile's supplier of the Covered Product to confirm the presence, source, and chain of custody of the 3TG used in its supply chain. As part of its RCOI, T-Mobile requested that its supplier complete the Conflict Minerals Reporting Template ("CMRT") developed by the Responsible Minerals Initiative ("RMI") to gather information regarding the smelters or refiners that provided 3TG contained in the Covered Product. When the nature of the information provided by the supplier warranted further analysis, T-Mobile personnel contacted the supplier for further evidence to clarify or validate the response.

Based on the RCOI described above, T-Mobile determined that all of the smelters or refiners disclosed by the supplier of the covered product that may have sourced 3TG from within the DRC Region have been audited and designated as conformant with the RMI's Responsible Minerals Assurance Process. RMI uses an independent third-party assessment of smelter management systems and sourcing practices to validate conformance with responsible sourcing due diligence standards.

**Due Diligence Process** 

T-Mobile's due diligence measures were designed in accordance with the Organization for Economic Co-operation and Development's Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas, including related supplements (the "OECD Guidance"), consistent with T-Mobile's position as a downstream company. T-Mobile's due diligence measures included the following steps:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.  ***Establish Strong Company Management Systems*** 

In 2017, T-Mobile adopted Responsible Sourcing Guidelines to promote transparency and the responsible sourcing of minerals in its supply chain. T-Mobile's Responsible Sourcing Guidelines require suppliers to conduct their own due diligence into the source and chain of custody of any conflict minerals used in the functionality or production of products that they supply to T-Mobile, provide full transparency of the mineral supply chain back to the mining source using a robust and verifiable traceability system, and respond to T-Mobile's inquiries related to conflict minerals in a timely manner. T-Mobile's Supplier Code of Conduct requires suppliers to comply with its Responsible Sourcing Guidelines when conducting business with T-Mobile. T-Mobile also expects its suppliers to apply the same standards of conduct to their upstream suppliers. T-Mobile's Responsible Sourcing Guidelines are available at www.t-mobile.com/our-story/working-together/suppliers/responsible-sourcing.

T-Mobile has adopted an internal management system to screen suppliers for compliance with its Responsible Sourcing Guidelines and the Rules. T-Mobile's conflict minerals due diligence is coordinated by its Third-Party Risk Management and Legal Affairs groups, who report to T-Mobile's Chief Financial Officer and General Counsel, respectively. Any issues or concerns regarding T-Mobile's supply chain can be reported at any time through T-Mobile's designated integrity hotline or compliance and ethics email address.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.  ***Identify and Assess Risks in the Supply Chain*** 

As described above in "Reasonable Country of Origin Inquiry," T-Mobile's conflict minerals due diligence is based on engagement with the suppliers of Covered Products, including a survey process in which T-Mobile requests information using a CMRT. Individuals within T-Mobile's relevant working groups manage the collection of information reported on the CMRT, coordinate follow-up communications with suppliers as needed, and evaluate information collected as well as additional information that may be available from other sources for potential risks. T-Mobile relies on the representations of its suppliers regarding the conformance of the smelters or refiners that supply minerals used in such suppliers' production processes.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.  ***Design and Implement a Strategy to Respond to Identified Risks*** 

If T-Mobile knows or has reason to believe that a supplier may be sourcing conflict minerals originating in one of the Covered Countries, T-Mobile reviews the smelters or refiners identified by the supplier against independently verified lists of smelters or refiners that are conformant to a cross-recognized, responsible mineral sourcing validation program, such as RMI's Responsible Minerals Assurance Process. Conformant smelters and refiners have the systems and processes in place to support the responsible sourcing of raw materials and can provide evidence to support their sourcing activities. Based on this review, T-Mobile considers whether direct engagement with the supplier and additional risk mitigation steps are necessary.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.  ***Support the Development and Implementation of Independent Third-Party Audits*** 

Due to its position as a downstream company, T-Mobile relies on the upstream audits conducted by industry organizations. T-Mobile supports the development and implementation of independent third-party audits of smelters' and refiners' sourcing via cross-recognized, responsible mineral sourcing validation programs.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.  ***Report on Supply Chain Due Diligence*** 

This Conflict Minerals Report is filed with the Securities and Exchange Commission, and a copy of it will be made available at http://investor.t-mobile.com/financials/sec-filings.

**Due Diligence Findings** 

One relevant supplier was identified as supplying the Covered Product for the Reporting Period. Based on information that T-Mobile received from this supplier, 209 unique smelters and refiners may have contributed 3TG contained in the Covered Product for 2025. All smelters identified by the supplier that sourced 3TG from the DRC Region have been audited and designated as conformant with the RMI's Responsible Minerals Assurance Process, and the supplier maintains in good standing in that program through continuous validation.

Based on the information provided by the supplier using the CMRT, the smelters or refiners listed in Annex A may have contributed 3TG contained in the Covered Product. T-Mobile's supplier for the Covered Product may have provided country of origin and facility information for its entire supply chain without specifying which facilities contributed 3TG that was actually used in components of the Covered Product. As a result, the list in Annex A may be overly broad with respect to which smelters or refiners in fact processed the 3TG used in the Covered Product.

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**Annex A** 

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| | | |
|:---|:---|:---|
| **Mineral** | **Smelter or Refiner Name** | **Country Location of Smelter or Refiner** |
| Gold | Abington Reldan Metals, LLC | United States of America |
| Gold | Advanced Chemical Company | United States of America |
| Gold | Agosi AG | Germany |
| Gold | Aida Chemical Industries Co., Ltd. | Japan |
| Gold | Almalyk Mining and Metallurgical Complex (AMMC) | Uzbekistan |
| Gold | AngloGold Ashanti Corrego do Sitio Mineracao | Brazil |
| Gold | Argor-Heraeus S.A. | Switzerland |
| Gold | ASAHI METALFINE, Inc. | Japan |
| Gold | Asahi Refining Canada Ltd. | Canada |
| Gold | Asahi Refining USA Inc. | United States of America |
| Gold | Asaka Riken Co., Ltd. | Japan |
| Gold | Aurubis AG | Germany |
| Gold | Bangalore Refinery | India |
| Gold | Bangko Sentral ng Pilipinas (Central Bank of the Philippines) | Philippines |
| Gold | Boliden Ronnskar | Sweden |
| Gold | C. Hafner GmbH + Co. KG | Germany |
| Gold | CCR Refinery - Glencore Canada Corporation | Canada |
| Gold | Chimet S.p.A. | Italy |
| Gold | Chugai Mining | Japan |
| Gold | Coimpa Industrial LTDA | Brazil |
| Gold | Dowa | Japan |
| Gold | DSC (Do Sung Corporation) | Republic of Korea |
| Gold | Eco-System Recycling Co., Ltd. East Plant | Japan |
| Gold | Eco-System Recycling Co., Ltd. North Plant | Japan |
| Gold | Eco-System Recycling Co., Ltd. West Plant | Japan |
| Gold | Elite Industech Co., Ltd. | Taiwan |
| Gold | GG Refinery Ltd. | Tanzania |
| Gold | Gold by Gold Colombia | Colombia |
| Gold | Gold Refinery of Zijin Mining Group Co., Ltd. | China |
| Gold | Heimerle + Meule GmbH | Germany |
| Gold | Heraeus Germany GmbH Co. KG | Germany |
| Gold | Heraeus Metals Hong Kong Ltd. | China |
| Gold | Impala Platinum - Platinum Metals Refinery (PMR) | South Africa |
| Gold | Impala Platinum - Rustenburg Smelter | South Africa |
| Gold | Impala Platinum - Rustenburg Smelter | South Africa |
| Gold | Inner Mongolia Qiankun Gold and Silver Refinery Share Co., Ltd. | China |
| Gold | Ishifuku Metal Industry Co., Ltd. | Japan |
| Gold | Istanbul Gold Refinery | Turkey |

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| | | |
|:---|:---|:---|
| Gold | Italpreziosi | Italy |
| Gold | Japan Mint | Japan |
| Gold | Jiangxi Copper Co., Ltd. | China |
| Gold | JX Nippon Mining & Metals Co., Ltd. | Japan |
| Gold | Kazzinc | Kazakhstan |
| Gold | Kennecott Utah Copper LLC | United States Of America |
| Gold | KGHM Polska Miedz Spolka Akcyjna | Poland |
| Gold | Kojima Chemicals Co., Ltd. | Japan |
| Gold | Korea Zinc Co., Ltd. | Republic of Korea |
| Gold | LS MnM Inc. | Republic of Korea |
| Gold | LT Metal Ltd. | Republic of Korea |
| Gold | Materion | United States of America |
| Gold | Matsuda Sangyo Co., Ltd. | Japan |
| Gold | Metal Concentrators SA (Pty) Ltd. | South Africa |
| Gold | Metalor Technologies (Hong Kong) Ltd. | China |
| Gold | Metalor Technologies (Singapore) Pte., Ltd. | Singapore |
| Gold | Metalor Technologies (Suzhou) Ltd. | China |
| Gold | Metalor Technologies S.A. | Switzerland |
| Gold | Metalor USA Refining Corporation | United States of America |
| Gold | Metalurgica Met-Mex Penoles S.A. De C.V. | Mexico |
| Gold | Mitsubishi Materials Corporation | Japan |
| Gold | Mitsui Mining and Smelting Co., Ltd. | Japan |
| Gold | MKS PAMP SA | Switzerland |
| Gold | MMTC-PAMP India Pvt., Ltd. | India |
| Gold | Nadir Metal Rafineri San. Ve Tic. A.S. | Turkey |
| Gold | Navoi Mining and Metallurgical Combinat | Uzbekistan |
| Gold | NH Recytech Company | Republic of Korea |
| Gold | Nihon Material Co., Ltd. | Japan |
| Gold | Ohura Precious Metal Industry Co., Ltd. | Japan |
| Gold | Planta Recuperadora de Metales SpA | Chile |
| Gold | PT Aneka Tambang (Persero) Tbk | Indonesia |
| Gold | PX Precinox S.A. | Switzerland |
| Gold | Rand Refinery (Pty) Ltd. | South Africa |
| Gold | REMONDIS PMR B.V. | Netherlands |
| Gold | Royal Canadian Mint | Canada |
| Gold | SAFINA A.S. | Czechia |
| Gold | SEMPSA Joyeria Plateria S.A. | Spain |
| Gold | Shandong Gold Smelting Co., Ltd. | China |
| Gold | Shandong Zhaojin Gold & Silver Refinery Co., Ltd. | China |
| Gold | Sichuan Tianze Precious Metals Co., Ltd. | China |
| Gold | Solar Applied Materials Technology Corp. | Taiwan |

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| | | |
|:---|:---|:---|
| Gold | Sumitomo Metal Mining Co., Ltd. | Japan |
| Gold | SungEel HiMetal Co., Ltd. | Republic of Korea |
| Gold | T.C.A S.p.A | Italy |
| Gold | Tanaka Kikinzoku Kogyo K.K. | Japan |
| Gold | Tokuriki Honten Co., Ltd. | Japan |
| Gold | TOO Tau-Ken-Altyn | Kazakhstan |
| Gold | Umicore S.A. Business Unit Precious Metals Refining | Belgium |
| Gold | United Precious Metal Refining, Inc. | United States of America |
| Gold | Valcambi S.A. | Switzerland |
| Gold | Western Australian Mint (T/a The Perth Mint) | Australia |
| Gold | WIELAND Edelmetalle GmbH | Germany |
| Gold | Yamakin Co., Ltd. | Japan |
| Gold | Yokohama Metal Co., Ltd. | Japan |
| Gold | Zhongyuan Gold Smelter of Zhongjin Gold Corporation | China |
| Tantalum | AMG Brasil | Brazil |
| Tantalum | Changsha South Tantalum Niobium Co., Ltd. | China |
| Tantalum | Changsha South Tantalum Niobium Co., Ltd. | China |
| Tantalum | D Block Metals, LLC | United States of America |
| Tantalum | F&X Electro-Materials Ltd. | China |
| Tantalum | FIR Metals & Resource Ltd. | China |
| Tantalum | Global Advanced Metals Aizu | Japan |
| Tantalum | Global Advanced Metals Boyertown | United States of America |
| Tantalum | Guangdong Rising Rare Metals-EO Materials Ltd. | China |
| Tantalum | Hengyang King Xing Lifeng New Materials Co., Ltd. | China |
| Tantalum | Jiangxi Dinghai Tantalum & Niobium Co., Ltd. | China |
| Tantalum | Jiangxi Tuohong New Raw Material | China |
| Tantalum | JiuJiang JinXin Nonferrous Metals Co., Ltd. | China |
| Tantalum | Jiujiang Tanbre Co., Ltd. | China |
| Tantalum | Jiujiang Zhongao Tantalum & Niobium Co., Ltd. | China |
| Tantalum | KEMET de Mexico | Mexico |
| Tantalum | Materion Newton Inc. | United States of America |
| Tantalum | Metallurgical Products India Pvt., Ltd. | India |
| Tantalum | Mineracao Taboca S.A. | Brazil |
| Tantalum | Mitsui Mining and Smelting Co., Ltd. | Japan |
| Tantalum | Ningxia Orient Tantalum Industry Co., Ltd. | China |
| Tantalum | NPM Silmet AS | Estonia |
| Tantalum | PowerX Ltd. | Rwanda |
| Tantalum | QuantumClean | United States of America |
| Tantalum | QuantumClean | United States of America |
| Tantalum | Resind Industria e Comercio Ltda. | Brazil |
| Tantalum | Taki Chemical Co., Ltd. | Japan |

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| | | |
|:---|:---|:---|
| Tantalum | TANIOBIS Co., Ltd. | Thailand |
| Tantalum | TANIOBIS GmbH | Germany |
| Tantalum | TANIOBIS Japan Co., Ltd. | Japan |
| Tantalum | Telex Metals | United States of America |
| Tantalum | Ulba Metallurgical Plant JSC | Kazakhstan |
| Tantalum | XIMEI RESOURCES (GUANGDONG) LIMITED | China |
| Tantalum | XinXing HaoRong Electronic Material Co., Ltd. | China |
| Tantalum | XinXing HaoRong Electronic Material Co., Ltd. | China |
| Tantalum | Yanling Jincheng Tantalum & Niobium Co., Ltd. | China |
| Tin | Alpha Assembly Solutions Inc | United States of America |
| Tin | Aurubis Beerse | Belgium |
| Tin | Aurubis Berango | Spain |
| Tin | Chenzhou Yunxiang Mining and Metallurgy Co., Ltd. | China |
| Tin | Chifeng Dajingzi Tin Industry Co., Ltd. | China |
| Tin | China Tin Group Co., Ltd. | China |
| Tin | CRM Synergies | Spain |
| Tin | CV Ayi Jaya | Indonesia |
| Tin | CV Ayi Jaya | Indonesia |
| Tin | Dongguan Best Alloys Co., Ltd. | China |
| Tin | Dowa | Japan |
| Tin | EM Vinto | Bolivia |
| Tin | Estanho de Rondonia S.A. | Brazil |
| Tin | Feinhutte Halsbrucke GmbH | Germany |
| Tin | Feinhutte Halsbrucke GmbH | Germany |
| Tin | Fenix Metals | Poland |
| Tin | Gejiu Non-Ferrous Metal Processing Co., Ltd. | China |
| Tin | Global Advanced Metals Greenbushes Pty Ltd. | Australia |
| Tin | Guangdong Hanhe Non-Ferrous Metal Co., Ltd. | China |
| Tin | Luna Smelter, Ltd. | Rwanda |
| Tin | Magnu's Minerais Metais e Ligas Ltda. | Brazil |
| Tin | Malaysia Smelting Corporation Berhad (Port Klang) | Malaysia |
| Tin | Metallic Resources, Inc. | United States of America |
| Tin | Mineracao Taboca S.A. | Brazil |
| Tin | Mining Minerals Resources SARL | Democratic Republic of the Congo |
| Tin | Minsur | Peru |
| Tin | Mitsubishi Materials Corporation | Japan |
| Tin | O.M. Manufacturing (Thailand) Co., Ltd. | Thailand |
| Tin | O.M. Manufacturing Philippines, Inc. | Philippines |
| Tin | Operaciones Metalurgicas S.A. | Bolivia |
| Tin | P Kay Metal, Inc | United States of America |
| Tin | PT ATD Makmur Mandiri Jaya | Indonesia |

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| | | |
|:---|:---|:---|
| Tin | PT Bangka Prima Tin | Indonesia |
| Tin | PT Cipta Persada Mulia | Indonesia |
| Tin | PT Mitra Stania Prima | Indonesia |
| Tin | PT Premium Tin Indonesia | Indonesia |
| Tin | PT Prima Timah Utama | Indonesia |
| Tin | PT Putera Sarana Shakti (PT PSS) | Indonesia |
| Tin | PT Rajehan Ariq | Indonesia |
| Tin | PT Timah Tbk Kundur | Indonesia |
| Tin | PT Timah Tbk Mentok | Indonesia |
| Tin | Resind Industria e Comercio Ltda. | Brazil |
| Tin | Rui Da Hung | Taiwan |
| Tin | Soft Metais Ltda. | Brazil |
| Tin | Super Ligas | Brazil |
| Tin | Takehara PVD Materials Plant / PVD Materials Division of MITSUI MINING & SMELTING CO., LTD. | Japan |
| Tin | Thaisarco | Thailand |
| Tin | Tin Smelting Branch of Yunnan Tin Co., Ltd. | China |
| Tin | Tin Technology & Refining | United States of America |
| Tin | TRATHO Metal Quimica | Brazil |
| Tin | White Solder Metalurgia e Mineracao Ltda. | Brazil |
| Tin | Yunnan Yunfan Non-ferrous Metals Co., Ltd. | China |
| Tungsten | A.L.M.T. Corp. | Japan |
| Tungsten | China Molybdenum Tungsten Co., Ltd. | China |
| Tungsten | Chongyi Zhangyuan Tungsten Co., Ltd. | China |
| Tungsten | Cronimet Brasil Ltda | Brazil |
| Tungsten | Ganzhou Seadragon W & Mo Co., Ltd. | China |
| Tungsten | Global Tungsten & Powders LLC | United States of America |
| Tungsten | Guangdong Xianglu Tungsten Co., Ltd. | China |
| Tungsten | H.C. Starck Tungsten GmbH | Germany |
| Tungsten | Hubei Green Tungsten Co., Ltd. | China |
| Tungsten | Japan New Metals Co., Ltd. | Japan |
| Tungsten | Jiangwu H.C. Starck Tungsten Products Co., Ltd. | China |
| Tungsten | Jiangxi Gan Bei Tungsten Co., Ltd. | China |
| Tungsten | Jiangxi Tonggu Non-ferrous Metallurgical & Chemical Co., Ltd. | China |
| Tungsten | Jiangxi Xinsheng Tungsten Industry Co., Ltd. | China |
| Tungsten | Jiangxi Yaosheng Tungsten Co., Ltd. | China |
| Tungsten | KENEE MINING VIETNAM COMPANY LIMITED | Vietnam |
| Tungsten | Kennametal Fallon | United States of America |
| Tungsten | Kennametal Huntsville | United States of America |
| Tungsten | Lianyou Metals Co., Ltd. | Taiwan |
| Tungsten | Lianyou Resources Co., Ltd. | Taiwan |
| Tungsten | Malipo Haiyu Tungsten Co., Ltd. | China |

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| | | |
|:---|:---|:---|
| Tungsten | Masan High-Tech Materials | Vietnam |
| Tungsten | Niagara Refining LLC | United States of America |
| Tungsten | Shinwon Tungsten (Fujian Shanghang) Co., Ltd. | China |
| Tungsten | TANIOBIS Smelting GmbH & Co. KG | Germany |
| Tungsten | Wolfram Bergbau und Hutten AG | Austria |
| Tungsten | Xiamen Tungsten (H.C.) Co., Ltd. | China |
| Tungsten | Xiamen Tungsten Co., Ltd. | China |

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Countries of origin from which these smelters or refiners may source conflict minerals include:

Albania

Algeria

Andorra

Antigua and Barbuda

Argentina

Armenia

Australia

Austria

Azerbaijan

Bahamas

Bangladesh

Barbados

Belarus

Belgium

Benin

Bolivia

Bosnia and Herzegovina

Brazil

Brunei

Bulgaria

Burkina Faso

Burundi

Cambodia

Cameroon

Canada

Chile

China

Colombia

Costa Rica

Côte d'Ivoire

Croatia

Cyprus

Czech Republic

Democratic Republic of the Congo

Denmark

Dominica

Dominican Republic

Ecuador

Egypt

El Salvador

Estonia

Eswatini

Ethiopia

Fiji

Finland

France

Georgia

Germany

Ghana

Greece

Grenada

Guatemala

Guinea

Guyana

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Honduras

Hungary

Iceland

India

Indonesia

Ireland

Israel

Italy

Jamaica

Japan

Jordan

Kazakhstan

Kenya

Kyrgyzstan

Laos

Latvia

Lebanon

Liberia

Liechtenstein

Lithuania

Luxembourg

Madagascar

Malaysia

Mali

Malta

Mauritania

Mexico

Mongolia

Morocco

Mozambique

Myanmar

Namibia

Netherlands

New Zealand

Nicaragua

Niger

Nigeria

Norway

Oman

Panama

Papua New Guinea

Peru

Philippines

Poland

Portugal

Republic of Korea

Romania

Russia

Rwanda

Saint Kitts and Nevis

Saint Lucia

Saint Vincent and the Grenadines

San Marino

Saudi Arabia

Senegal

Serbia

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Sierra Leone

Singapore

Slovakia

Slovenia

South Africa

Spain

Sri Lanka

Suriname

Sweden

Switzerland

Taiwan

Tajikistan

Tanzania

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