# EDGAR Filing Document

**Accession Number:** 0000889132
**File Stem:** 0001193125-25-216339
**Filing Date:** 2025-9
**Character Count:** 53780
**Document Hash:** 5d677ef413d54ec4dd0eeeb3a0e0bb29
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-216339.hdr.sgml**: 20250925

**ACCESSION NUMBER**: 0001193125-25-216339

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 15

**FILED AS OF DATE**: 20250925

**DATE AS OF CHANGE**: 20250925

**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:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-13368
- **FILM NUMBER:** 251340158

**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 SD** 

**Specialized Disclosure Report** 

## POSCO HOLDINGS INC.
**(Exact name of registrant as specified in its charter)** 

---

| | | |
|:---|:---|:---|
| **The Republic of Korea** | **1-13368** | **Not Applicable** |
| **(State or other jurisdiction**<br> **of incorporation)** | **(Commission**<br> **File Number)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **POSCO Center, 440 Teheran-ro,** |  |
| **Gangnam-gu** |  |
| **Seoul, Republic of Korea** | **06194** |
| **(Address of principal executive offices)** | **(Zip Code)** |

---

**CHUNG, Ihn young** 

**POSCO Center, 440 Teheran-ro, Gangnam-gu,** 

**Seoul, Republic of Korea 06194** 

**+82-2-3457-1073** 

**(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 13q-1 under the Securities and Exchange Act (17 CFR 240.13q-1) for the reporting period from January 1 to December 31, 2024.

☐ Rule 13q-1 under the Securities and Exchange Act (17 CFR 240.13q-1) for the fiscal year ended __________.

------

**Section 1 - Conflict Minerals Disclosure** 

---

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

---

Not applicable.

---

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

---

Not applicable.

**Section 2 - Resource Extraction Issuer Disclosure** 

---

| | |
|:---|:---|
| **Item 2.01** | **Resource Extraction Issuer Disclosure and Report**  |

---

**Disclosure of Payments by Resource Extraction Issuers** 

The payment disclosure required by this Item 2.01 is included as Exhibit 2.01 to this Form SD.

**Report on payments to governments for the year ended December 31, 2024** 

This report provides an overview of the payments to governments made by POSCO HOLDINGS INC. ("POSCO HOLDINGS") and its consolidated subsidiaries for the fiscal year ended December 31, 2024. Unless the context requires otherwise, references in this report to the "Company," "we," "us" and "our" refer to POSCO HOLDINGS and its consolidated subsidiaries.

All payments are reported in US Dollars. Payments that were made in currencies other than in US Dollars have been converted to US Dollars using the exchange rates as of December 31, 2024.

**Our Business Segments** 

Our six business segments are as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Steel Segment.** This segment includes the production and sale of steel products.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Infrastructure Business.** This segment includes our businesses related to provision of infrastructure and
related services. Such segment is divided into three operations as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Trading Segment.** This segment consists primarily of the global trading activities, natural resources
development activities and power generation activities of POSCO INTERNATIONAL Corporation, our consolidated subsidiary.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Construction Segment.** This segment, which is operated by POSCO Eco & Challenge Co., Ltd., our
consolidated subsidiary, consists primarily of planning, designing and construction of industrial plants, civil engineering projects and commercial and residential buildings, both in Korea and overseas.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Logistics and Others Segment.** This segment consists primarily of the information technology and
operational technology services of POSCO DX Co., Ltd. and the integrated logistics services of POSCO FLOW Co., Ltd., our consolidated subsidiaries.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Rechargeable Battery Materials Segment.** This segment includes (i) the manufacturing and sale of
various energy-related and other industrial materials by POSCO Future M Co., Ltd., our consolidated subsidiary, including anode and cathode materials for rechargeable batteries and (ii) investments made by us in production projects relating to
other materials such as lithium.

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Others Segment.** This segment includes POSCO HOLDINGS and all other entities which fall below the reporting
thresholds. POSCO HOLDINGS actively explores diversification opportunities in promising business areas.

**Our Projects** 

This report discloses the payments made by us to governments for the commercial development of oil, natural gas and brine lithium, and which involve the exploration, extraction, processing, and export of such minerals, or the acquisition of a license for any such activity. 

As of December 31, 2024, our reportable projects are as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Argentina Sal de Oro Project:** extraction of brine lithium used in production of lithium hydroxide and
lithium carbonate, through brine well production, in the Hombre Muerto salt lake located in Salta and Catamarca provinces of Argentina. We hold a 100.0% interest in the project. We consider this mining property as one project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Malaysia Block PM524 Project:** offshore oil and natural gas exploration project located in the eastern sea
of the Malay peninsula. We hold a 80.0% interest in the project. We consider this mining property as one project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Indonesia Block Bunga Project:** offshore oil and natural gas exploration project located in the eastern sea
of Java, Indonesia. We hold a 50.0% interest in the project. We consider this mining property as one project.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Australia Atlas, Roma North and Range Project:** (i) extraction of coal seam gas, through well
drilling, in the Atlas and Roma North gas fields located in Eastern Australia and (ii) exploration of additional natural gas, including in the Range gas field located in Eastern Australia. We hold a 50.1% interest in the project. We consider
this natural gas project as one project.

**Section 3 - Exhibits** 

---

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

---

The following exhibit is filed as part of this report on Form SD.

Exhibit 2.01 – Resource Extraction Payment Report

------

**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.

---

| | |
|:---|:---|
| POSCO HOLDINGS INC. | POSCO HOLDINGS INC. |
| By: | /s/ HAN, Young Ah |
| Name: | HAN, Young Ah |
| Title: | Senior Vice President |
| Date: | September 25, 2025 |

---

## Exhibit 2.01

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#### Exhibit 2.01

#### Resource Extraction Payment Report

#### Project-level Disclosure
The table below sets forth our payments made to governments for the fiscal year ended December 31, 2024, by project and type of payment.

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (in US Dollars) <sup>(1)</sup> |
|  | Taxes | Royalties | Fees | Production<br> Entitlements | Bonuses | Dividends | Payments for<br> Infrastructure<br> Improvements | Community<br> and Social<br> Responsibility<br> Payments | Total |
| Argentina |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sal de Oro Project | $8347249 | $— | $904230 | $— | $— | $— | $— | $— | $9251479 |
| Malaysia |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Block PM524 Project |  |  | 814217 |  |  |  |  |  | $814217 |
| Indonesia |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Block Bunga Project |  |  | 162231 |  |  |  |  |  | $162231 |
| Australia |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Atlas, Roma North, Range Project | 1084930 | 12703328 | 605290 |  |  |  | —  |  | $14393548 |
| Total | $9432179 | $12703328 | $2485968 | $— | $— | $— | $— | $— | $24621475 |

---

(1) All payments are reported in US Dollars. Payments relating to project in Argentina were made in Argentine Pesos, payments relating to project in Malaysia were made in Malaysian Ringgits, payments relating to project in Indonesia were made in Indonesian Rupiahs, and payments relating to the project in Australia were made in Australian Dollars. Such payments made in currencies other than in US Dollars have been converted to US Dollars using the exchange rates as of December 31, 2024.

------

#### Government-level Disclosure
The table below sets forth our payments made to governments for the fiscal year ended December 31, 2024, by government and type of payment.

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> | For the year ended December 31, 2024 (In US Dollars) <sup>(1)</sup> |
|  | Taxes | Royalties | Fees | Production<br> Entitlements | Bonuses | Dividends | Payments for<br> Infrastructure<br> Improvements | Community<br> and Social<br> Responsibility<br> Payments | Total |
| Argentina |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;National Government | $8168414 | $— | $— | $— | $— | $— | $— | $— | $8168414 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;State Government | 175890 |  | 904230 |  |  |  |  |  | 1080120 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Municipal Government | 2945 |  |  |  |  |  |  |  | 2945 |
| Malaysia |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;State-owned enterprise |  |  | 814217 |  |  |  |  |  | 814217 |
| Indonesia |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;State-owned enterprise |  |  | 162231 |  |  |  |  |  | 162231 |
| Australia |  |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;National Government |  |  | 88930 |  |  |  |  |  | 88930 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;State Government |  | 12703328 | 510744 |  |  |  |  |  | 13214072 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Local Government | 1084930 |  | 5616 |  |  |  |  |  | 1090546 |
| Total | $9432179 | $12703328 | $2485968 | $— | $— | $— | $— | $— | $24621475 |

---

(1) All payments are reported in US Dollars. Payments relating to project in Argentina were made in Argentine Pesos, payments relating to project in Malaysia were made in Malaysian Ringgits, payments relating to project in Indonesia were made in Indonesian Rupiahs, and payments relating to the project in Australia were made in Australian Dollars. Such payments made in currencies other than in US Dollars have been converted to US Dollars using the exchange rates as of December 31, 2024.

------

#### Payment Details Disclosure
The table below provides the details of payments made to governments for the fiscal year ended December 31, 2024.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 | For the year ended December 31, 2024 |
| Subnational Political<br>Jurisdiction | Government | Business Segment | Project | Resource | Extraction Method | Amount<br> (In US<br> Dollars) <sup>(1)</sup> |
| Argentina |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Salta and Catamarca | National Government | Rechargeable Battery Materials<br> Segment | Sal de Oro Project | Brine Lithium | Brine Well Production | $8168414 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Salta | State and Municipal | Rechargeable Battery Materials<br> Segment | Sal de Oro Project | Brine Lithium | Brine Well Production | 907175 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Catamarca | State | Rechargeable Battery Materials<br> Segment | Sal de Oro Project | Brine Lithium | Brine Well Production | 175890 |
| Total |  |  |  |  |  | $9251479 |
| Malaysia |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Terengganu | State-owned<br> enterprise | Infrastructure Business —<br> Trading Segment | Block PM524 Project | Oil and Natural Gas | Well Drilling | $814217 |
| Total |  |  |  |  |  | $814217 |
| Indonesia |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Java | State-owned<br> enterprise | Infrastructure Business —<br> Trading Segment | Block Bunga Project | Oil and Natural Gas | Well Drilling | $162231 |
| Total |  |  |  |  |  | $162231 |
| Australia |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Queensland | National, State and<br> Local | Infrastructure Business —<br> Trading Segment | Atlas, Roma North<br> and Range Project | Coal Seam Gas | Well Drilling | $14393548 |
| Total |  |  |  |  |  | $14393548 |

---

(1) All payments are reported in US Dollars. Payments relating to project in Argentina were made in Argentine Pesos, payments relating to project in Malaysia were made in Malaysian Ringgits, payments relating to project in Indonesia were made in Indonesian Rupiahs, and payments relating to the project in Australia were made in Australian Dollars. Such payments made in currencies other than in US Dollars have been converted to US Dollars using the exchange rates as of December 31, 2024.

## Exhibit 2.01

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          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_StateOwnedEnterpriseMember" xlink:to="lab_pkx_StateOwnedEnterpriseMember" />
          <link:loc xlink:type="locator" xlink:href="pkx-20241231.xsd#pkx_BrineLithiumMember" xlink:label="loc_pkx_BrineLithiumMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_pkx_BrineLithiumMember" xml:lang="en-US">Brine Lithium [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_BrineLithiumMember" xlink:to="lab_pkx_BrineLithiumMember" />
          <link:loc xlink:type="locator" xlink:href="pkx-20241231.xsd#pkx_CoalSeamGasMember" xlink:label="loc_pkx_CoalSeamGasMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_pkx_CoalSeamGasMember" xml:lang="en-US">Coal Seam Gas [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_CoalSeamGasMember" xlink:to="lab_pkx_CoalSeamGasMember" />
          <link:loc xlink:type="locator" xlink:href="pkx-20241231.xsd#pkx_OilAndNaturalGasMember" xlink:label="loc_pkx_OilAndNaturalGasMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_pkx_OilAndNaturalGasMember" xml:lang="en-US">Oil and Natural Gas [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_OilAndNaturalGasMember" xlink:to="lab_pkx_OilAndNaturalGasMember" />
          <link:loc xlink:type="locator" xlink:href="pkx-20241231.xsd#pkx_InfrastructureBusinessTradingSegmentMember" xlink:label="loc_pkx_InfrastructureBusinessTradingSegmentMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_pkx_InfrastructureBusinessTradingSegmentMember" xml:lang="en-US">Infrastructure Business Trading Segment [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_InfrastructureBusinessTradingSegmentMember" xlink:to="lab_pkx_InfrastructureBusinessTradingSegmentMember" />
          <link:loc xlink:type="locator" xlink:href="pkx-20241231.xsd#pkx_RechargeableBatteryMaterialsSegmentMember" xlink:label="loc_pkx_RechargeableBatteryMaterialsSegmentMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_pkx_RechargeableBatteryMaterialsSegmentMember" xml:lang="en-US">Rechargeable Battery Materials Segment [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_RechargeableBatteryMaterialsSegmentMember" xlink:to="lab_pkx_RechargeableBatteryMaterialsSegmentMember" />
          <link:loc xlink:type="locator" xlink:href="pkx-20241231.xsd#pkx_SecondaryBatteryMaterialsSegmentMember" xlink:label="loc_pkx_SecondaryBatteryMaterialsSegmentMember" />
          <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="lab_pkx_SecondaryBatteryMaterialsSegmentMember" xml:lang="en-US">Secondary Battery Materials Segment [Member]</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_pkx_SecondaryBatteryMaterialsSegmentMember" xlink:to="lab_pkx_SecondaryBatteryMaterialsSegmentMember" />
        </link:labelLink>
      </link:linkbase>
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
  <import namespace="http://xbrl.sec.gov/currency/2025" schemaLocation="https://xbrl.sec.gov/currency/2025/currency-2025.xsd" />
  <import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <import namespace="http://xbrl.sec.gov/rxp/2025" schemaLocation="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd" />
  <import namespace="http://xbrl.org/2020/extensible-enumerations-2.0" schemaLocation="https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd" />
  <import namespace="http://xbrl.sec.gov/snj-def/2025" schemaLocation="https://xbrl.sec.gov/snj/2025/snj-2025_def.xsd" />
  <import namespace="http://xbrl.sec.gov/snj/2025" schemaLocation="https://xbrl.sec.gov/snj/2025/snj-2025.xsd" />
  <element name="AtlasRomaNorthRangeProjectMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_AtlasRomaNorthRangeProjectMember" substitutionGroup="xbrli:item" />
  <element name="BlockBungaProjectMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_BlockBungaProjectMember" substitutionGroup="xbrli:item" />
  <element name="BlockPM524ProjectMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_BlockPM524ProjectMember" substitutionGroup="xbrli:item" />
  <element name="SaldeOroProjectMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_SaldeOroProjectMember" substitutionGroup="xbrli:item" />
  <element name="LocalGovernmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_LocalGovernmentMember" substitutionGroup="xbrli:item" />
  <element name="MunicipalGovernmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_MunicipalGovernmentMember" substitutionGroup="xbrli:item" />
  <element name="NationalGovernmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_NationalGovernmentMember" substitutionGroup="xbrli:item" />
  <element name="StateGovernmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_StateGovernmentMember" substitutionGroup="xbrli:item" />
  <element name="StateOwnedEnterpriseMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_StateOwnedEnterpriseMember" substitutionGroup="xbrli:item" />
  <element name="BrineLithiumMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_BrineLithiumMember" substitutionGroup="xbrli:item" />
  <element name="CoalSeamGasMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_CoalSeamGasMember" substitutionGroup="xbrli:item" />
  <element name="OilAndNaturalGasMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_OilAndNaturalGasMember" substitutionGroup="xbrli:item" />
  <element name="InfrastructureBusinessTradingSegmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_InfrastructureBusinessTradingSegmentMember" substitutionGroup="xbrli:item" />
  <element name="RechargeableBatteryMaterialsSegmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_RechargeableBatteryMaterialsSegmentMember" substitutionGroup="xbrli:item" />
  <element name="SecondaryBatteryMaterialsSegmentMember" type="dtr-types:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="pkx_SecondaryBatteryMaterialsSegmentMember" substitutionGroup="xbrli:item" />
</schema>
</XBRL>

```