# EDGAR Filing Document

**Accession Number:** 0001759631
**File Stem:** 0001213900-26-062857
**Filing Date:** 2026-5
**Character Count:** 36498
**Document Hash:** e3b94a5e6fa5fb285762f686acd25ae9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-062857.hdr.sgml**: 20260529

**ACCESSION NUMBER**: 0001213900-26-062857

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260529

**DATE AS OF CHANGE**: 20260529

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hyliion Holdings Corp.
- **CENTRAL INDEX KEY:** 0001759631
- **STANDARD INDUSTRIAL CLASSIFICATION:** TRUCK & BUS BODIES [3713]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38823
- **FILM NUMBER:** 261045078

**BUSINESS ADDRESS:**
- **STREET 1:** 1202 BMC DRIVE, SUITE 100
- **CITY:** CEDAR PARK
- **STATE:** TX
- **ZIP:** 78613
- **BUSINESS PHONE:** (833) 495-4466

**MAIL ADDRESS:**
- **STREET 1:** 1202 BMC DRIVE, SUITE 100
- **CITY:** CEDAR PARK
- **STATE:** TX
- **ZIP:** 78613

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Tortoise Acquisition Corp.
- **DATE OF NAME CHANGE:** 20181120

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM SD**

**Specialized Disclosure Report**

**HYLIION HOLDINGS CORP.**

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

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-38823** | **82-2538002** |
| (State or Other Jurisdiction<br> of Incorporation) | (Commission File Number) | (IRS Employer<br> Identification Number) |

---

**1202 BMC Drive, Suite 100**

**Cedar Park, TX 78613**

(Address of principal executive offices) (Zip Code)

**Jose Oxholm**

Registrant's Telephone Number, including area code **(833) 495-4466**

**(Name and telephone number, including area code, of the person to contact in connection with this report.)**

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

☒ Rule
13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025.

**SECTION 1 – CONFLICT MINERALS DISCLOSURE**

***Item 1.01*** ***Conflict Minerals Disclosure and Report***

 ****

**Conflict Minerals Disclosure**

This Specialized Disclosure Report on Form SD and the Conflict Minerals Report, filed as Exhibit 1.01 hereto, are publicly available at *www.hyliion.com* well as the SEC's EDGAR database at *www.sec.gov.*

***Item 1.02*** ***Exhibit***

The Conflict Minerals Report required by Item 1.01 is filed as Exhibit 1.01 to this Form SD.

**SECTION 2 – EXHIBITS**

***Item 2.01*** ***Exhibits***

Exhibit 1.01 – [Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD.](ea029256901ex1-01.htm)

**SIGNATURES**

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

---

| | | |
|:---|:---|:---|
|  | **HYLIION HOLDINGS CORP.** | **HYLIION HOLDINGS CORP.** |
|  | By: | /s/ Thomas Healy |
| Date: May 29, 2026 |  | Thomas Healy |
|  |  | Chief Executive Officer |

---

## Exhibit 1.01

**Exhibit 1.01**

**Hyliion Holdings Corp.**

**Conflict Minerals Report**

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

**<u>Introduction</u>**

Hyliion Holdings Corp. (also referred to as "the Company," "we," "our," and "us") is a Delaware corporation.

This Conflict Minerals Report ("CMR") for the year ended December 31, 2025, is presented to comply with Rule 13p-1 under the Securities Exchange Act of 1934 (the "Rule"). The Rule imposes certain reporting obligations on U.S. Securities and Exchange Commission ("SEC") issuers whose manufactured products contain certain minerals which are necessary to the functionality or production of their products. These minerals are cassiterite, columbite- tantalite (coltan), gold, wolframite, and their derivatives, which are limited to tin, tantalum and tungsten ("3TG" or "Conflict Minerals"). The Rule focuses on 3TG emanating from the Democratic Republic of Congo ("DRC") region and nine adjoining countries (together, the "Covered Countries"). If an issuer has reason to believe that any of the Conflict Minerals in their supply chain may have originated in the Covered Countries, or if they are unable to determine the country of origin of those Conflict Minerals, then the issuer must exercise due diligence on the Conflict Minerals' source and chain of custody and submit a CMR to the SEC that includes a description of those due diligence measures.

This CMR relates to the process undertaken for Hyliion products that were manufactured, or contracted to be manufactured, during calendar year 2025 and that contain Conflict Minerals.

**<u>Executive Summary</u>**

We performed a Reasonable Country of Origin Inquiry ("RCOI") on suppliers we believe provided materials or components containing 3TGs necessary to the manufacturing of our products during calendar year 2025. Our suppliers identified 337 valid smelters and refineries ("Smelters"). Of these 337 Smelters, we identified 48 as sourcing (or there was a reason to believe they may be sourcing) from the Covered Countries. Our due diligence review indicated that 32 of these Smelters have been audited and recognized as conformant to the Responsible Minerals Assurance Process ("RMAP"). The remaining 16 Smelters potentially sourcing from the Covered Countries were subject to our risk mitigation process which is in accordance with the OECD Due Diligence Guidance for Responsible Supply Chain of Minerals from Conflict-Affected and High-Risk Areas (the "OECD Guidance").

**<u>Company Management Systems</u>**

Hyliion established strong management systems based on Step 1 of the OECD Guidance.

&nbsp;&nbsp;&nbsp;&nbsp;◦ Step
1A - Adopt, and clearly communicate to suppliers and the public, a company policy for the supply chain of minerals originating from conflict-affected
and high-risk areas. We adopted a conflict minerals policy that is publicly available at the link provided below. https://s25.q4cdn.com/501989927/files/doc_downloads/Governance/2021/05/Hyliion-Conflict-Minerals-Policy.pdf

&nbsp;&nbsp;&nbsp;&nbsp;◦ Step
1B - Structure internal management to support supply chain due diligence. We maintain a cross-functional internal team to support our
supply chain due diligence efforts. This team reports its findings to a senior member of the supply chain management organization.

&nbsp;&nbsp;&nbsp;&nbsp;◦ Step
1C - Establish a system of transparency, information collection and control over the supply chain. We implemented a detailed process
to collect required supplier and smelter RCOI and due diligence data. Full details on the supply chain data gathering are included in
the RCOI and due diligence sections of this Report.

&nbsp;&nbsp;&nbsp;&nbsp;◦ Step
1D - Strengthen company engagement with suppliers. We engage directly with suppliers during the RCOI process. Additionally, our supplier
terms and conditions require suppliers to source materials from smelters that, if sourcing from the Covered Countries, are either conformant
with the RMI's Responsible Minerals Assurance Process assessment protocols or are working towards conformance. We have also implemented
a plan to improve the quantity and quality of supplier and smelter responses year-over-year.

&nbsp;&nbsp;&nbsp;&nbsp;◦ Step
1E - Establish a company level grievance mechanism. EthicsPoint, a toll-free help line at 1-844-989-2949, and hyliion.ethicspoint.com,
a dedicated webpage are available to those who wish to ask questions about Hyliion's policies, seek guidance on specific situations
or to anonymously report violations.

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

We designed our RCOI process in accordance with Step 2A and 2B of the OECD Guidance. Our RCOI process involved two stages:

&nbsp;&nbsp;&nbsp;&nbsp;◦ Stage
1 - Supplier RCOI (Step 2A of the OECD Guidance)

&nbsp;&nbsp;&nbsp;&nbsp;◦ Stage
2 - Smelter RCOI (Step 2B of the OECD Guidance)

For the 2025 reporting period, Hyliion's RCOI process was executed by Claigan Environmental Inc. ("Claigan").

*Supplier RCOI*

 

We designed our supplier RCOI process to identify the smelters in our supply chain. Our supplier RCOI process for the 2025 reporting period included:

&nbsp;&nbsp;&nbsp;&nbsp;◦ developing
a list of suppliers providing 3TG containing components;

&nbsp;&nbsp;&nbsp;&nbsp;◦ contacting
each supplier and requesting Conflict Minerals data using the industry-standard Conflict Minerals Reporting Template ("CMRT")

&nbsp;&nbsp;&nbsp;&nbsp;◦ reviewing
supplier responses for accuracy and completeness;

&nbsp;&nbsp;&nbsp;&nbsp;◦ aggregating
supplier-provided smelters into a single unique list of smelters meeting the definition of a smelter under one of three industry-recognized
audit protocols; and

&nbsp;&nbsp;&nbsp;&nbsp;◦ reviewing
the final smelter list (and compared it to industry peers) to determine if we reasonably identified all the smelters in our supply chain.

Through the supplier RCOI process we identified 337 Smelters in our supply chain.

*Smelter RCOI*

 

Due to the overlap between smelter RCOI and smelter due diligence, the smelter RCOI process is summarized in the due diligence section of this report.

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

Hyliion's Due Diligence Process was designed in accordance with the applicable sections of Steps 2, 3, and 4 of the OECD Guidance. For the 2025 reporting period, Hyliion's smelter RCOI and Due Diligence process were executed by Claigan.

*Smelter RCOI and Due Diligence*

 

Hyliion's smelter RCOI and due diligence processes were designed to meet the criteria of Step 2 of the OECD Guidance.

We engaged with each smelter identified in our supply chain to determine whether or not they sourced from the Covered Countries. For smelters that confirmed, either directly or through industry associations, that they did not source from the Covered Countries but who were not recognized as conformant to the RMAP, we reviewed publicly available information to determine whether there was any contrary evidence that contradicted the smelter's declaration. In doing so we reviewed sources such as NGO publications, the most recent United Nations Group of Experts reports on the DRC and performed public internet searches.

If smelters did not respond to our inquiry, we reviewed the same publicly available sources to determine whether there was reason to believe the smelter may have sourced from the Covered Countries during the reporting period.

We categorize smelters that are sourcing (or that we have reason to believe may be sourcing) from the Covered Countries and not currently RMAP Conformant as high-risk. We are conducting the risk mitigation procedures described below on all high-risk smelters.

Our suppliers identified 337 unique smelters, of which 48 smelters source, or there is a reason to believe they may source, from the Covered Countries. We determined that 32 of these 48 smelters have been audited and recognized as conformant to the RMAP. We are conducting risk mitigation on the remaining 16 smelters.

*Risk Mitigation*

 

Hyliion is conducting risk mitigation on 16 Smelters that were not recognized as conformant to the RMAP and were sourcing (or there is a reason to believe they may be sourcing) from the DRC or surrounding countries. Hyliion's risk mitigation was designed in accordance with Step 3B of the OECD Guidance and was reported to the Chief Legal and Compliance Officer in accordance with Step 3A of the OECD Guidance.

As part of our risk mitigation process, we are performing additional due diligence to determine if there is any reason to believe the smelters directly or indirectly financed or benefited armed groups in the DRC or adjoining countries.

During the due diligence process, Hyliion found that one of the 16 identified high risk smelters was RMAP Conformant for the entirety of the reporting period in question and was removed from the RMAP Conformant list at the beginning of 2026. Around the same time, it was announced the smelter had ceased operations. Another of the 16 identified high risk smelters was RMAP Conformant for the majority of the reporting period in question and was removed from the Conformant list in August 2025. Therefore, this facility was considered low risk for most of the reporting period in question. If this smelter does not re-engage with the RMAP, Hyliion will follow-up with suppliers regarding this smelter during the 2026 reporting period.

We will not require the removal of smelters if there was no reason to believe they were directly or indirectly financing or benefitting armed groups in the Covered Countries. These smelters are scheduled to be re-visited in the 2026 reporting period.

**<u>Improvement Plan</u>**

Hyliion is committed to continuous improvement in our due diligence process to further mitigate the risk that the 3TG materials in our products could directly or indirectly benefit or finance armed groups in the Covered Countries. As part of our efforts to mitigate this risk, new or renewed supplier contracts require suppliers to provide information that will allow us to evaluate their conflict mineral status. We will continuously improve our efforts to educate our suppliers, to increase supplier response rates and improve the timeliness, accuracy and comprehensiveness of the supplier survey responses we receive. Additionally, we will enhance our efforts to encourage our suppliers to source from RMAP conformant smelters when sourcing material from the Covered Countries.

**<u>Smelters and Refineries</u>**

---

| | | |
|:---|:---|:---|
| **3TG Metal** | **Standard Smelter Name** | **Smelter ID** |
| Gold | 8853 S.p.A. | CID002763 |
| Gold | ABC Refinery Pty Ltd. | CID002920 |
| Gold | Abington Reldan Metals, LLC | CID002708 |
| Gold | Advanced Chemical Company | CID000015 |
| Gold | African Gold Refinery \* | CID003185 |
| Gold | Agosi AG | CID000035 |
| Gold | Aida Chemical Industries Co., Ltd. | CID000019 |
| Gold | Al Etihad Gold Refinery DMCC | CID002560 |
| Gold | Albino Mountinho Lda. | CID002760 |
| Gold | Alexy Metals | CID003500 |
| Gold | Almalyk Mining and Metallurgical Complex (AMMC) | CID000041 |
| Gold | AngloGold Ashanti Córrego do Sítio Mineração | CID000058 |
| Gold | Argor-Heraeus S.A. | CID000077 |
| Gold | ASAHI METALFINE, Inc. | CID000082 |
| Gold | Asahi Refining Canada Ltd. | CID000924 |
| Gold | Asahi Refining USA Inc. | CID000920 |
| Gold | Asaka Riken Co., Ltd. | CID000090 |
| Gold | Atlantic Copper, S.L.U. | CID003350 |
| Gold | Attero Recycling Pvt Ltd | CID004697 |
| Gold | AU Traders and Refiners | CID002850 |
| Gold | Augmont Enterprises Private Limited | CID003461 |

---

---

| | | |
|:---|:---|:---|
| Gold | Aurubis AG, Hamburg | CID000113 |
| Gold | Bangalore Refinery | CID002863 |
| Gold | Bangko Sentral ng Pilipinas (Central Bank of the Philippines) | CID000128 |
| Gold | Boliden Mineral AB (Ronnskar) | CID000157 |
| Gold | C. Hafner GmbH + Co. KG | CID000176 |
| Gold | Caridad | CID000180 |
| Gold | Cendres + Métaux S.A. | CID000189 |
| Gold | CGR Metalloys Pvt Ltd. | CID003382 |
| Gold | Chimet S.p.A. | CID000233 |
| Gold | Chugai Mining | CID000264 |
| Gold | Coimpa Industrial LTDA | CID004010 |
| Gold | Daye Non-Ferrous Metals Mining Ltd. | CID000343 |
| Gold | Degussa Sonne / Mond Goldhandel GmbH | CID002867 |
| Gold | Dijllah Gold Refinery FZC | CID003348 |
| Gold | Dongwu Gold Group | CID003663 |
| Gold | Dowa | CID000401 |
| Gold | DSC (Do Sung Corporation) | CID000359 |
| Gold | Eco-System Recycling Co., Ltd. East Plant | CID000425 |
| Gold | Eco-System Recycling Co., Ltd. North Plant | CID003424 |
| Gold | Eco-System Recycling Co., Ltd. West Plant | CID003425 |
| Gold | Elite Industech Co., Ltd. | CID004755 |
| Gold | Emerald Jewel Industry India Limited (Unit 1) | CID003487 |
| Gold | Emerald Jewel Industry India Limited (Unit 2) | CID003488 |
| Gold | Emerald Jewel Industry India Limited (Unit 3) | CID003489 |
| Gold | Emerald Jewel Industry India Limited (Unit 4) | CID003490 |
| Gold | Emirates Gold DMCC | CID002561 |
| Gold | Fidelity Printers and Refiners Ltd. | CID002515 |
| Gold | Fujairah Gold FZC | CID002584 |
| Gold | Gasabo Gold Refinery Ltd | CID005006 |
| Gold | GG Refinery Ltd. | CID004506 |
| Gold | GGC Gujrat Gold Centre Pvt. Ltd. | CID002852 |
| Gold | Glencore Canada Corporation - CCR Refinery | CID000185 |
| Gold | Gold by Gold Colombia | CID003641 |
| Gold | Gold Coast Refinery | CID003186 |
| Gold | Gold Corporation - The Perth Mint | CID002030 |
| Gold | Great Wall Precious Metals Co., Ltd. of CBPM | CID001909 |
| Gold | Hangzhou Fuchunjiang Smelting Co., Ltd. | CID000671 |
| Gold | Heimerle + Meule GmbH | CID000694 |
| Gold | Heraeus Limited Hong Kong (HLH) | CID000707 |
| Gold | Heraeus Precious Metals Germany (HPMG) | CID000711 |
| Gold | Hunan Chenzhou Mining Co., Ltd. | CID000767 |
| Gold | Hunan Guiyang yinxing Nonferrous Smelting Co., Ltd. | CID000773 |
| Gold | HwaSeong CJ Co., Ltd. | CID000778 |
| Gold | Impala Platinum - Platinum Metals Refinery (PMR) | CID004714 |
| Gold | Inner Mongolia Qiankun Gold and Silver Refinery Share Co., Ltd. | CID000801 |
| Gold | International Precious Metal Refiners | CID002562 |
| Gold | Ishifuku Metal Industry Co., Ltd. | CID000807 |
| Gold | Istanbul Gold Refinery | CID000814 |
| Gold | Italpreziosi | CID002765 |

---

---

| | | |
|:---|:---|:---|
| Gold | JALAN & Company | CID002893 |
| Gold | Japan Mint | CID000823 |
| Gold | Jiangxi Copper Co., Ltd. | CID000855 |
| Gold | JSC Ekaterinburg Non-Ferrous Metal Processing Plant | CID000927 |
| Gold | JSC Novosibirsk Refinery | CID000493 |
| Gold | JSC Uralelectromed \* | CID000929 |
| Gold | JX Advanced Metals Corporation | CID000937 |
| Gold | K.A. Rasmussen | CID003497 |
| Gold | Kazakhmys Smelting LLC | CID000956 |
| Gold | Kazzinc | CID000957 |
| Gold | Kennecott Utah Copper LLC | CID000969 |
| Gold | KGHM Polska Miedź Spółka Akcyjna | CID002511 |
| Gold | Kojima Chemicals Co., Ltd. | CID000981 |
| Gold | Korea Zinc Co., Ltd. | CID002605 |
| Gold | Kundan Care Products Ltd. | CID003463 |
| Gold | Kyrgyzaltyn JSC | CID001029 |
| Gold | Kyshtym Copper-Electrolytic Plant ZAO | CID002865 |
| Gold | L'Orfebre S.A. | CID002762 |
| Gold | Lingbao Gold Co., Ltd. | CID001056 |
| Gold | LS MnM Inc. | CID001078 |
| Gold | LT Metal Ltd. | CID000689 |
| Gold | Luoyang Zijin Yinhui Gold Refinery Co., Ltd . | CID001093 |
| Gold | Marsam Metals | CID002606 |
| Gold | Materion | CID001113 |
| Gold | Matsuda Sangyo Co., Ltd. | CID001119 |
| Gold | MD Overseas | CID003548 |
| Gold | Metal Concentrators SA (Pty) Ltd. | CID003575 |
| Gold | Metallix Refining Inc. | CID003557 |
| Gold | Metalor Technologies (Hong Kong) Ltd. | CID001149 |
| Gold | Metalor Technologies (Singapore) Pte., Ltd. | CID001152 |
| Gold | Metalor Technologies (Suzhou) Ltd. | CID001147 |
| Gold | Metalor Technologies S.A. | CID001153 |
| Gold | Metalor USA Refining Corporation | CID001157 |
| Gold | Metalúrgica Met-Mex Peñoles S.A. De C.V. | CID001161 |
| Gold | Minera Titan del Peru SRL (MTP) - Belen Plant | CID005014 |
| Gold | Mitsubishi Materials Corporation | CID001188 |
| Gold | Mitsui Mining and Smelting Co., Ltd. | CID001193 |
| Gold | MKS PAMP SA | CID001352 |
| Gold | MMTC-PAMP India Pvt., Ltd. | CID002509 |
| Gold | Modeltech Sdn Bhd | CID002857 |
| Gold | Morris and Watson | CID002282 |
| Gold | Moscow Special Alloys Processing Plant | CID001204 |
| Gold | Nadir Metal Rafineri San. Ve Tic. A.Ş. | CID001220 |
| Gold | Navoi Mining and Metallurgical Combinat | CID001236 |
| Gold | NH Recytech Company | CID003189 |
| Gold | Nihon Material Co., Ltd. | CID001259 |
| Gold | NOBLE METAL SERVICES | CID003690 |
| Gold | Oegussa Oesterreichische Gold- und Silber-Scheideanstalt Gesm.b.H. | CID002779 |
| Gold | Ohura Precious Metal Industry Co., Ltd. | CID001325 |

---

---

| | | |
|:---|:---|:---|
| Gold | OJSC "The Gulidov Krasnoyarsk Non-Ferrous Metals Plant" (OJSC Krastsvetmet) | CID001326 |
| Gold | Pease & Curren | CID002872 |
| Gold | Penglai Penggang Gold Industry Co., Ltd. | CID001362 |
| Gold | Planta Recuperadora de Metales SpA | CID002919 |
| Gold | Prioksky Plant of Non-Ferrous Metals | CID001386 |
| Gold | PT Aneka Tambang (Persero) Tbk | CID001397 |
| Gold | PX Précinox S.A. | CID001498 |
| Gold | QG Refining, LLC | CID003324 |
| Gold | Rand Refinery (Pty) Ltd. | CID001512 |
| Gold | REMONDIS PMR B.V. | CID002582 |
| Gold | Royal Canadian Mint | CID001534 |
| Gold | SAAMP | CID002761 |
| Gold | Sabin Metal Corp. | CID001546 |
| Gold | Safimet S.p.A | CID002973 |
| Gold | SAFINA A.S. | CID002290 |
| Gold | SAM Precious Metals FZ-LLC | CID003666 |
| Gold | Samduck Precious Metals | CID001555 |
| Gold | Samwon Metals Corp. | CID001562 |
| Gold | SEMPSA Joyería Platería S.A. | CID001585 |
| Gold | Shandong Gold Smelting Co., Ltd. | CID001916 |
| Gold | Shandong Humon Smelting Co., Ltd. | CID002525 |
| Gold | Shandong Tiancheng Biological Gold Industrial Co., Ltd. | CID001619 |
| Gold | Shandong Zhaojin Gold & Silver Refinery Co., Ltd. | CID001622 |
| Gold | Shenzhen CuiLu Gold Co., Ltd. | CID002750 |
| Gold | SHENZHEN JINJUNWEI RESOURCE COMPREHENSIVE DEVELOPMENT CO., LTD. | CID004435 |
| Gold | Shenzhen Zhonghenglong Real Industry Co., Ltd. | CID002527 |
| Gold | Shirpur Gold Refinery Ltd. | CID002588 |
| Gold | Sichuan Tianze Precious Metals Co., Ltd. | CID001736 |
| Gold | Singway Technology Co., Ltd. | CID002516 |
| Gold | SOE Shyolkovsky Factory of Secondary Precious Metals | CID001756 |
| Gold | Solar Applied Materials Technology Corp. | CID001761 |
| Gold | SOLEIL METALS (Chala One Plant) | CID004704 |
| Gold | SOLEIL METALS (YAKARI Plant) | CID004705 |
| Gold | Sovereign Metals | CID003383 |
| Gold | State Research Institute Center for Physical Sciences and Technology | CID003153 |
| Gold | Sumitomo Metal Mining Co., Ltd. | CID001798 |
| Gold | SungEel HiMetal Co., Ltd. | CID002918 |
| Gold | Super Dragon Technology Co., Ltd. | CID001810 |
| Gold | T.C.A S.p.A | CID002580 |
| Gold | Tanaka Kikinzoku Kogyo K.K. | CID001875 |
| Gold | TITAN COMPANY LIMITED, JEWELLERY DIVISION | CID004491 |
| Gold | Tokuriki Honten Co., Ltd. | CID001938 |
| Gold | Tongling (Jinguan) Nonferrous Jinguan Copper Industry | CID001947 |
| Gold | TOO Tau-Ken-Altyn | CID002615 |
| Gold | Torecom | CID001955 |
| Gold | Umicore Precious Metals Thailand | CID002314 |
| Gold | Umicore S.A. Business Unit Precious Metals Refining | CID001980 |
| Gold | United Precious Metal Refining, Inc. | CID001993 |

---

---

| | | |
|:---|:---|:---|
| Gold | Valcambi S.A. | CID002003 |
| Gold | WEEEREFINING | CID003615 |
| Gold | WIELAND Edelmetalle GmbH | CID002778 |
| Gold | Yamakin Co., Ltd. | CID002100 |
| Gold | Yokohama Metal Co., Ltd. | CID002129 |
| Gold | Yunnan Copper Southwest Copper Branch | CID000197 |
| Gold | Zhongyuan Gold Smelter of Zhongjin Gold Corporation | CID002224 |
| Gold | Zijin Mining Group Gold Smelting Co. Ltd. | CID002243 |
| Tantalum | 5D Production OU | CID003926 |
| Tantalum | AMG Brasil | CID001076 |
| Tantalum | D Block Metals, LLC | CID002504 |
| Tantalum | F&X Electro-Materials Ltd. | CID000460 |
| Tantalum | FIR Metals & Resource Ltd. | CID002505 |
| Tantalum | Global Advanced Metals Aizu | CID002558 |
| Tantalum | Global Advanced Metals Boyertown | CID002557 |
| Tantalum | Guangdong Rising Rare Metals-EO Materials Ltd. | CID000291 |
| Tantalum | Hengyang King Xing Lifeng New Materials Co., Ltd. | CID002492 |
| Tantalum | Jiangxi Dinghai Tantalum & Niobium Co., Ltd. | CID002512 |
| Tantalum | Jiangxi Suns Nonferrous Materials Co. Ltd. | CID004813 |
| Tantalum | Jiangxi Tuohong New Raw Material | CID002842 |
| Tantalum | JiuJiang JinXin Nonferrous Metals Co., Ltd. | CID000914 |
| Tantalum | Jiujiang Tanbre Co., Ltd. | CID000917 |
| Tantalum | Jiujiang Zhongao Tantalum & Niobium Co., Ltd. | CID002506 |
| Tantalum | KEMET de Mexico | CID002539 |
| Tantalum | Materion Newton Inc. | CID002548 |
| Tantalum | Metallurgical Products India Pvt., Ltd. | CID001163 |
| Tantalum | Mineração Taboca S.A. | CID001175 |
| Tantalum | Mitsui Kinzoku Company, Limited | CID001192 |
| Tantalum | Ningxia Orient Tantalum Industry Co., Ltd. | CID001277 |
| Tantalum | NPM Silmet AS | CID001200 |
| Tantalum | PowerX Ltd. | CID004054 |
| Tantalum | Resind Indústria e Comércio Ltda. | CID002707 |
| Tantalum | Solikamsk Magnesium Works OAO | CID001769 |
| Tantalum | Taki Chemical Co., Ltd. | CID001869 |
| Tantalum | TANIOBIS Co., Ltd. | CID002544 |
| Tantalum | TANIOBIS GmbH | CID002545 |
| Tantalum | TANIOBIS Japan Co., Ltd. | CID002549 |
| Tantalum | TANIOBIS Smelting GmbH & Co. KG | CID002550 |
| Tantalum | Telex Metals | CID001891 |
| Tantalum | Ulba Metallurgical Plant JSC | CID001969 |
| Tantalum | XIMEI RESOURCES (GUANGDONG) LIMITED | CID000616 |
| Tantalum | XinXing HaoRong Electronic Material Co., Ltd. | CID002508 |
| Tantalum | Yanling Jincheng Tantalum & Niobium Co., Ltd. | CID001522 |
| Tin | Alpha Assembly Solutions Inc | CID000292 |
| Tin | An Vinh Joint Stock Mineral Processing Company | CID002703 |
| Tin | Aurubis Beerse | CID002773 |
| Tin | Aurubis Berango | CID002774 |
| Tin | Chenzhou Yunxiang Mining and Metallurgy Co., Ltd. | CID000228 |
| Tin | Chifeng Dajingzi Tin Industry Co., Ltd. | CID003190 |

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| | | |
|:---|:---|:---|
| Tin | China Tin Group Co., Ltd. | CID001070 |
| Tin | Conecsus LLC | CID003504 |
| Tin | CRM Fundicao De Metais E Comercio De Equipamentos Eletronicos Do Brasil Ltda | CID003486 |
| Tin | CRM Synergies | CID003524 |
| Tin | CV Ayi Jaya | CID002570 |
| Tin | Dongguan Best Alloys Co., Ltd. | CID000377 |
| Tin | Dongguan CiEXPO Environmental Engineering Co., Ltd. | CID003356 |
| Tin | Dowa | CID000402 |
| Tin  | Electro-Mechanical Facility of the Cao Bang Minerals & Metallurgy Joint Stock Company | CID002572 |
| Tin | EM Vinto | CID000438 |
| Tin | Estanho de Rondônia S.A. | CID000448 |
| Tin | Fabrica Auricchio Industria e Comercio Ltda. | CID003582 |
| Tin | Fenix Metals | CID000468 |
| Tin | Gejiu City Fuxiang Industry and Trade Co., Ltd. | CID003410 |
| Tin | Gejiu Kai Meng Industry and Trade LLC | CID000942 |
| Tin | Gejiu Non-Ferrous Metal Processing Co., Ltd. | CID000538 |
| Tin | Gejiu Yunxin Nonferrous Electrolysis Co., Ltd. | CID001908 |
| Tin | Gejiu Zili Mining And Metallurgy Co., Ltd. | CID000555 |
| Tin | Global Advanced Metals Greenbushes Pty Ltd. | CID004754 |
| Tin | Guangdong Hanhe Non-Ferrous Metal Co., Ltd. | CID003116 |
| Tin | HuiChang Hill Tin Industry Co., Ltd. | CID002844 |
| Tin | Jiangxi New Nanshan Technology Ltd. | CID001231 |
| Tin | Longnan Chuangyue Environmental Protection Technology Development Co., Ltd | CID004796 |
| Tin | Luna Smelter, Ltd. | CID003387 |
| Tin | Ma'anshan Weitai Tin Co., Ltd. | CID003379 |
| Tin | Magnu's Minerais Metais e Ligas Ltda. | CID002468 |
| Tin | Malaysia Smelting Corporation (MSC) | CID001105 |
| Tin | Malaysia Smelting Corporation Berhad (Port Klang) | CID004434 |
| Tin | Melt Metais e Ligas S.A. | CID002500 |
| Tin | Metallic Resources, Inc. | CID001142 |
| Tin | Mineração Taboca S.A. | CID001173 |
| Tin | Mining Minerals Resources SARL | CID004065 |
| Tin | Minsur | CID001182 |
| Tin | Mitsubishi Materials Corporation | CID001191 |
| Tin | Modeltech Sdn Bhd | CID002858 |
| Tin | Nghe Tinh Non-Ferrous Metals Joint Stock Company | CID002573 |
| Tin | Novosibirsk Tin Combine | CID001305 |
| Tin | O.M. Manufacturing (Thailand) Co., Ltd. | CID001314 |
| Tin | O.M. Manufacturing Philippines, Inc. | CID002517 |
| Tin | Operaciones Metalúrgicas S.A. | CID001337 |
| Tin | P Kay Metal, Inc | CID005189 |
| Tin | Precious Minerals and Smelting Limited | CID003409 |
| Tin | PT Aries Kencana Sejahtera | CID000309 |
| Tin | PT Arsed Indonesia | CID005067 |
| Tin | PT ATD Makmur Mandiri Jaya | CID002503 |
| Tin | PT Bangka Prima Tin | CID002776 |
| Tin | PT Cipta Persada Mulia | CID002696 |

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| | | |
|:---|:---|:---|
| Tin | PT Masbro Alam Stania | CID003380 |
| Tin | PT Mitra Stania Prima | CID001453 |
| Tin | PT Mitra Sukses Globalindo | CID003449 |
| Tin | PT Premium Tin Indonesia | CID000313 |
| Tin | PT Prima Timah Utama | CID001458 |
| Tin | PT Putera Sarana Shakti (PT PSS) | CID003868 |
| Tin | PT Rajehan Ariq | CID002593 |
| Tin | PT Timah Tbk Kundur | CID001477 |
| Tin | PT Timah Tbk Mentok | CID001482 |
| Tin | Resind Indústria e Comércio Ltda. | CID002706 |
| Tin | RIKAYAA GREENTECH PRIVATE LIMITED | CID004692 |
| Tin | Rui Da Hung | CID001539 |
| Tin | Super Ligas | CID002756 |
| Tin | Takehara PVD Materials Plant / PVD Materials Division of MITSUI MINING & SMELTING CO., LTD. | CID004403 |
| Tin | Thaisarco | CID001898 |
| Tin | Tin Smelting Branch of Yunnan Tin Co., Ltd. | CID002180 |
| Tin | Tin Technology & Refining | CID003325 |
| Tin | VQB Mineral and Trading Group JSC | CID002015 |
| Tin | White Solder Metalurgia e Mineração Ltda. | CID002036 |
| Tin | Woodcross Smelting Company Limited | CID004724 |
| Tin | Yunnan Chengfeng Non-ferrous Metals Co., Ltd. | CID002158 |
| Tin | Yunnan Yunfan Non-ferrous Metals Co., Ltd. | CID003397 |
| Tungsten | A.L.M.T. Corp. | CID000004 |
| Tungsten | Albasteel Industria e Comercio de Ligas Para Fundicao Ltd. | CID003427 |
| Tungsten | Asia Tungsten Products Vietnam Ltd. | CID002502 |
| Tungsten | China Molybdenum Tungsten Co., Ltd. | CID002641 |
| Tungsten | Chongyi Zhangyuan Tungsten Co., Ltd. | CID000258 |
| Tungsten | Cronimet Brasil Ltda | CID003468 |
| Tungsten | Fujian Xinlu Tungsten Co., Ltd. | CID003609 |
| Tungsten | Ganzhou Jiangwu Ferrotungsten Co., Ltd. | CID002315 |
| Tungsten | Ganzhou Seadragon W & Mo Co., Ltd. | CID002494 |
| Tungsten | Geo Enterprise | CID005373 |
| Tungsten | Global Tungsten & Powders LLC. | CID000568 |
| Tungsten | Guangdong Xianglu Tungsten Co., Ltd. | CID000218 |
| Tungsten | H.C. Starck Tungsten GmbH | CID002541 |
| Tungsten | Hubei Green Tungsten Co., Ltd. | CID003417 |
| Tungsten | Hunan Jintai New Material Co., Ltd. | CID000769 |
| Tungsten | Hunan Shizhuyuan Nonferrous Metals Co., Ltd. Chenzhou Tungsten Products Branch | CID002513 |
| Tungsten | Hydrometallurg, JSC | CID002649 |
| Tungsten | Japan New Metals Co., Ltd. | CID000825 |
| Tungsten | Jiangwu H.C. Starck Tungsten Products Co., Ltd. | CID002551 |
| Tungsten | Jiangxi Gan Bei Tungsten Co., Ltd. | CID002321 |
| Tungsten | Jiangxi Minmetals Gao'an Non-ferrous Metals Co., Ltd. | CID002313 |
| Tungsten | Jiangxi Xinsheng Tungsten Industry Co., Ltd. | CID002317 |
| Tungsten | Jiangxi Yaosheng Tungsten Co., Ltd. | CID002316 |
| Tungsten | Jing Yuan Tungsten Technology Co., Ltd. | CID005012 |
| Tungsten | JSC "Kirovgrad Hard Alloys Plant" | CID003408 |
| Tungsten | KENEE MINING VIETNAM COMPANY LIMITED | CID004619 |

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| | | |
|:---|:---|:---|
| Tungsten | Kennametal Fallon | CID000966 |
| Tungsten | Kennametal Huntsville | CID000105 |
| Tungsten | LAOS SOUTHERN MINING SMELTING SOLE CO.,LTD | CID005017 |
| Tungsten | Lianyou Metals Co., Ltd. | CID003407 |
| Tungsten | Lianyou Resources Co., Ltd. | CID004397 |
| Tungsten | Malipo Haiyu Tungsten Co., Ltd. | CID002319 |
| Tungsten | Masan High-Tech Materials | CID002543 |
| Tungsten | Moliren Ltd. | CID002845 |
| Tungsten | Nam Viet Cromit Joint Stock Company | CID004034 |
| Tungsten | Niagara Refining LLC | CID002589 |
| Tungsten | NPP Tyazhmetprom LLC | CID003416 |
| Tungsten | OOO "Technolom" 1 | CID003614 |
| Tungsten | OOO "Technolom" 2 | CID003612 |
| Tungsten | Philippine Bonway Manufacturing Industrial Corporation | CID004797 |
| Tungsten | Philippine Carreytech Metal Corp. | CID004438 |
| Tungsten | S.P.T. spol.s r.o. | CID005068 |
| Tungsten | Shinwon Tungsten (Fujian Shanghang) Co., Ltd. | CID004430 |
| Tungsten | TANIOBIS Smelting GmbH & Co. KG | CID002542 |
| Tungsten | Tungamoy Metals Inc. | CID005248 |
| Tungsten | Tungsten Vietnam Joint Stock Company | CID003993 |
| Tungsten | Unecha Refractory Metals Plant | CID002724 |
| Tungsten | Uzbekistan Technological Metallurgical Complex JSC | CID002660 |
| Tungsten | Wolfram Bergbau and Hütten AG | CID002044 |
| Tungsten | Xiamen Tungsten (H.C.) Co., Ltd. | CID002320 |
| Tungsten | Xiamen Tungsten Co., Ltd. | CID002082 |
| Tungsten | YUDU ANSHENG TUNGSTEN CO., LTD. | CID003662 |

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\* Denotes a smelter or refiner listed on the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) sanctions list. Hyliion does not purchase materials from or conduct any business directly with sanctioned entities. Most of Hyliion's suppliers provide smelter data at a company-wide level, therefore Hyliion is unable to confirm whether the sanctioned entities were in the company's supply chain during the reporting period.

Forty-eight of the 337 unique Smelters identified during our RCOI either declared that they were sourcing, or there was reason to believe were sourcing, from the Covered Countries. Based on the Smelters' disclosures and the publicly available information, we have reason to believe these Smelters may be sourcing from the following Covered Countries: The Democratic Republic of the Congo, Rwanda, Burundi, Uganda, Tanzania, Angola, and Zambia. Our due diligence review indicated that 32 of the 48 Smelters have been audited and recognized as conformant to the RMAP.

**<u>Additional Risk Factors</u>**

The statements included in this Conflict Minerals Report are based on the RCOI process and due diligence performed in good faith by Hyliion. These statements are based on the information available at the time. A number of factors could introduce errors or otherwise affect the accuracy of these statements.

These factors include, but are not limited to: (i) gaps in supplier or smelter data, (ii) errors or omissions by suppliers or smelters, (iii) uncertainty or varied interpretations of the disclosure requirements described in the SEC final rules, (iv) all instances of conflict minerals necessary to the functionality or manufacturing of our products may not have been reported correctly by our suppliers, (v) some suppliers and smelters are unfamiliar with the diligence process and information required to be provided, which could lead to inaccurate or incomplete responses, (vi) timeliness of data received from our suppliers, (vii) information that is in the public domain may not be discovered despite having conducted a reasonable search, (viii) there may be errors in publicly available information, (ix) language barriers or errors in translation could lead to inaccurate information, (x) there could be oversights or errors in conflict free smelter audits, (xi) materials sourced from the Covered Countries could be inaccurately declared as sourced from outside the Covered Countries, (xii) illegally tagged Conflict Minerals could be introduced into the supply chain without our knowledge or the knowledge of our suppliers, (xiii) difficulties obtaining information from companies that are no longer in business, and (xiv) smuggling of Conflict Minerals outside the Covered Countries may make identification of their origin more difficult.

This Specialized Disclosure Report on Form SD contains forward looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements include any plans or intentions to improve the number and quality of supplier and smelter response rates and steps we intend to take to mitigate risk in our supply chain. These forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those projected. In particular, the Company's risk mitigation and improvement plans may be affected by: (a) changes in global regulations related to the extraction of and disclosure obligations related to conflict minerals; (b) the ability of our suppliers and smelters to provide accurate information in response to our requests; (c) the availability of alternate sources of materials necessary to the functionality or production of our products on commercially reasonable terms or at all; (d) the ability of certified smelters to meet demand for raw materials; and (e) limits on our ability to unilaterally influence supplier behavior. These forward-looking statements are made as of the date hereof and we assume no obligation to update such statements.