# EDGAR Filing Document

**Accession Number:** 0000889132
**File Stem:** 0001193125-25-275618
**Filing Date:** 2025-11
**Character Count:** 6568
**Document Hash:** 5d4b54bb6469dbf15d3e4ce6c1100419
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-275618.hdr.sgml**: 20251112

**ACCESSION NUMBER**: 0001193125-25-275618

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251112

**FILED AS OF DATE**: 20251112

**DATE AS OF CHANGE**: 20251112

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** POSCO HOLDINGS INC.
- **CENTRAL INDEX KEY:** 0000889132
- **STANDARD INDUSTRIAL CLASSIFICATION:** STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-13368
- **FILM NUMBER:** 251468201

**BUSINESS ADDRESS:**
- **STREET 1:** POSCO CENTER
- **STREET 2:** 440 TEHERAN-RO
- **CITY:** GANGNAM-GU, SEOUL
- **STATE:** M5
- **ZIP:** 06194
- **BUSINESS PHONE:** 02-3457-0114

**MAIL ADDRESS:**
- **STREET 1:** POSCO CENTER
- **STREET 2:** 440 TEHERAN-RO
- **CITY:** GANGNAM-GU, SEOUL
- **STATE:** M5
- **ZIP:** 06194

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** POSCO
- **DATE OF NAME CHANGE:** 20020517

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** POHANG IRON & STEEL CO LTD
- **DATE OF NAME CHANGE:** 19930607

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**Form 6-K** 

**REPORT OF FOREIGN PRIVATE ISSUER** 

**PURSUANT TO RULE 13a-16 OR 15D-16** 

**UNDER THE SECURITIES EXCHANGE ACT OF 1934** 

**For the month of November, 2025** 

**Commission File Number: 1-13368** 

## POSCO HOLDINGS INC.
**(Translation of registrant's name into English)** 

**POSCO Center, 440 Teheran-ro, Gangnam-gu, Seoul, Korea, 06194** 

**(Address of principal executive offices)** 

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

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**<u>Decision on Acquisition of Shares or Investment Certificates of Other Corporation</u>**

(Voluntary Disclosure)

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| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp; 1. Details of<br>Issuing Company | <br> Name of Company<br>| LithiumCo (pseudonym) | LithiumCo (pseudonym) | LithiumCo (pseudonym) |
| &nbsp;&nbsp; 1. Details of<br>Issuing Company | <br> Nationality<br>| Australia | Representative | - |
| &nbsp;&nbsp; 1. Details of<br>Issuing Company | Capital Stock (KRW) | - | <br> Relationship to<br>Company<br>| - |
| &nbsp;&nbsp; 1. Details of<br>Issuing Company | Total Number of Shares<br> Issued | - | Main Business | Mining |
| 2. Details of Acquisition | Number of Shares to Be<br> Acquired | - | - | - |
| 2. Details of Acquisition | Acquisition Amount<br> (KRW) | 1112080500000 | 1112080500000 | 1112080500000 |
| 2. Details of Acquisition | <br> Equity Capital (KRW)<br>| 61450367919684 | 61450367919684 | 61450367919684 |
| 2. Details of Acquisition | Ratio to Equity Capital<br> (%) | 1.8 | 1.8 | 1.8 |
| 2. Details of Acquisition | <br> If Classified as a<br> Large-scale Corporation<br>| Yes | Yes | Yes |
| &nbsp;&nbsp; <br> 3. Number of Shares Held and Shareholding Ratio<br> after Acquisition | Number of Shares Held | - | - | - |
| &nbsp;&nbsp; <br> 3. Number of Shares Held and Shareholding Ratio<br> after Acquisition | <br> Shareholding Ratio(%)<br>| 30 | 30 | 30 |
| <br> 4. Acquisition Method | <br> 4. Acquisition Method | <br> Cash Acquisition | <br> Cash Acquisition | <br> Cash Acquisition |
| 5. Purpose of Acquisition | 5. Purpose of Acquisition | Investment in prominent assets to enhance cost-competitiveness of the lithium business | Investment in prominent assets to enhance cost-competitiveness of the lithium business | Investment in prominent assets to enhance cost-competitiveness of the lithium business |
| 6. Scheduled Acquisition Date | 6. Scheduled Acquisition Date | - | - | - |
| 7. Date of Board Resolution (Decision Date) | 7. Date of Board Resolution (Decision Date) | 2025-11-11 | 2025-11-11 | 2025-11-11 |
| &nbsp;&nbsp; - Attendance of Outside<br>Directors | Present(No.) | 6 | 6 | 6 |
| &nbsp;&nbsp; - Attendance of Outside<br>Directors | Absent(No.) | - | - | - |
| &nbsp;&nbsp; - Attendance of Auditors(members of Audit Committee) | &nbsp;&nbsp; - Attendance of Auditors(members of Audit Committee) | - | - | - |
| 8. If entered into an agreement for Put Option, Call Option, Put Back Option, etc. | 8. If entered into an agreement for Put Option, Call Option, Put Back Option, etc. | No | No | No |
| &nbsp;&nbsp; - Details of agreements | &nbsp;&nbsp; - Details of agreements | - | - | - |

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| | |
|:---|:---|
| 9. Other references useful for making investment decisions | - This disclosure pertains to the acquisition of 30% of the shares by POSCO HOLDINGS of the intermediate holding company to be incorporated by Mineral Resources Ltd. in Australia to operate the lithium business. |
|  | - Under '1. Details of the Issuing Company', Name of Company, Representative, Capital Stock, and Total Number of Shares Issued have been omitted since the Issuing Company has yet to be incorporated. As soon as the information is generated, an amended disclosure will be submitted. |
|  | - Under '2. Details of Acquisition', Number of Shares to Be Acquired remains unstated as the Issuing Company has yet to be incorporated. This information will be provided with an amended disclosure once it is confirmed. |
|  | - Under '2. Details of Acquisition', Acquisition amount (in KRW) is USD 765,000,000, which applied the SMBS basic exchange rate (1 USD= 1,453.70) on the date of the Board resolution, or November 11, 2025. |
|  | - Item '6. Scheduled Acquisition Date' may change based on the progress of the merger filing in Australia and/or China, FIRB approval in Australia, and/or agreement between the parties. |
|  | - Item '7. Date of Board Resolution' refers to the date of resolution by the POSCO HOLDINGS Board. |
|  | - The aforementioned schedule and details may change based on the progress of the transaction; any change will be reported by submitting amended disclosures. |

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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 undersigned, thereunto duly authorized.

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| | | |
|:---|:---|:---|
|  | <u>POSCO HOLDINGS INC.</u> | <u>POSCO HOLDINGS INC.</u> |
|  | (Registrant) | (Registrant) |
| Date: November 12 , 2025 | By | /s/ Han, Young-Ah |
|  |  | (Signature) |
|  |  | Name: Han, Young-Ah |
|  |  | Title: Senior Vice President |

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