# EDGAR Filing Document

**Accession Number:** 0000889132
**File Stem:** 0001193125-26-133865
**Filing Date:** 2026-3
**Character Count:** 135782
**Document Hash:** 36c3e39a54ef14d911cf483573b804ab
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-133865.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0001193125-26-133865

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**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:** 26819611

**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 March, 2026** 

**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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POSCO HOLDINGS INC. is furnishing under cover of Form 6-K:

**Exhibit 99.1:** An English-language translated documents of POSCO HOLDINGS INC.'s Business Report for the year 2025.

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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.

---

| | | |
|:---|:---|:---|
|  | <u>POSCO HOLDINGS INC.</u> | <u>POSCO HOLDINGS INC.</u> |
|  | (Registrant) | (Registrant) |
| Date: March 31, 2026 | By | /s/ Han, Young Ah |
|  | (Signature) | (Signature) |
|  | Name: Han, Young Ah | Name: Han, Young Ah |
|  | Title: Executive Vice President | Title: Executive Vice President |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g59318g0330141646751.jpg)

**BUSINESS REPORT** 

**(From January 1, 2025 to December 31, 2025)** 

THIS IS AN ENGLISH TRANSLATION OF THE BUSINESS REPORT ORIGINALLY PREPARED IN THE KOREAN LANGUAGE (IN SUCH FORM AS REQUIRED BY THE KOREAN FINANCIAL SERVICES COMMISSION). THIS ENGLISH TRANSLATION IS NOT OFFICIAL AND IS PROVIDED FOR INFORMATION PURPOSES ONLY.

UNLESS EXPRESSLY STATED OTHERWISE, ALL INFORMATION CONTAINED HEREIN IS PRESENTED ON BOTH CONSOLIDATED AND NON-CONSOLIDATED BASIS IN ACCORDANCE WITH THE KOREAN-INTERNATIONAL FINANCIAL REPORTING STANDARDS (K-IFRS) WHICH DIFFER IN CERTAIN RESPECTS FROM GENERALLY ACCEPTED ACCOUNTING PRINCIPLES IN CERTAIN OTHER COUNTRIES, INCLUDING THE UNITED STATES. WE HAVE MADE NO ATTEMPT TO IDENTIFY OR QUANTIFY THE IMPACT OF THESE DIFFERENCES.

------

**BUSINESS REPORT** 

(From January 1, 2025 to December 31, 2025)

To: Korean Financial Services Commission and Korea Exchange

---

| |
|:---|
| /s/ LEE, Ju Tae |
| **LEE, Ju Tae** |

---

---

| |
|:---|
| President and Representative Director |
| POSCO HOLDINGS INC.<br> 6261 Donghaean-ro, Pohang-si, Nam-gu, Gyungsangbuk-do, Korea |
| Telephone: +82-54-220-0114 |

---

---

| |
|:---|
| /s/ HAN, Young Ah |
| **HAN, Young Ah** |

---

---

| |
|:---|
| Head of IR Office, Executive Vice President |
| POSCO HOLDINGS INC.<br> 6261 Donghaean-ro, Pohang-si, Nam-gu, Gyungsangbuk-do, Korea |
| Telephone: +82-054-220-0114 |

---

------

**TABLE OF CONTENTS** 

I. Overview

II. Business

III. Financial Statements

IV. Corporate Governance

---

| | |
|:---|:---|
| ![LOGO](g59318adsp12.jpg) | This Report is a summary of the Business Report disclosed on the Korea Exchange on March 11, 2026.  |

---

---

| | |
|:---|:---|
| ![LOGO](g59318adsp12.jpg) | Independent auditors' reports on both consolidated and separate financial statements were filed to the SEC on March 20, 2026.  |

---

- Report for consolidated financial statements:

File/Film Number 0001193125-26-116653

- Report for separate financial statements:

File/Film Number 0001193125-26-116565

------

**I. OVERVIEW** 

**1. Scope of Business** 

**A. POSCO HOLDINGS INC.** (the "Company," formerly POSCO)<sup>1)</sup> 

(1) Change of the company name: At the Extraordinary General Meeting of Shareholders convened on January 28, 2022, POSCO (the "Company") approved the vertical spin-off plan, as proposed. Therefore, the name of the company was changed from 'POSCO' to 'POSCO HOLDINGS INC.,' effective March 2, 2022.

The Company's business scope is as follows:

---

| | |
|:---|:---|
| **Before the vertical spin-off<br>(Beginning of 2022)** | **After the vertical spin-off**<br> **(As of the date of submission)** |
| (1) To manufacture, market, promote, sell and distribute iron, steel and rolled products; | (1) To engage in holding business of controlling the business of, and guiding, organizing and improving the management of subsidiaries by acquiring and owning the shares or ownership interests in subsidiaries (including sub-subsidiaries and companies controlled by such sub-subsidiaries; collectively "subsidiaries"); |
| (2) To engage in harbor loading and unloading, transportation and warehousing businesses; | (1) To engage in holding business of controlling the business of, and guiding, organizing and improving the management of subsidiaries by acquiring and owning the shares or ownership interests in subsidiaries (including sub-subsidiaries and companies controlled by such sub-subsidiaries; collectively "subsidiaries"); |
| (3) To engage in the management of professional athletic organizations; | (1) To engage in holding business of controlling the business of, and guiding, organizing and improving the management of subsidiaries by acquiring and owning the shares or ownership interests in subsidiaries (including sub-subsidiaries and companies controlled by such sub-subsidiaries; collectively "subsidiaries"); |
| (4) To engage in the supply of gas and power generation as well as in the distribution business thereof and in the resources development business; | (2) To engage in the management and licensing of intellectual property rights including brands and trademarks; |
| (5) To engage in leasing of real estate and distribution businesses; | (3) To engage in the investment related to start-up assistance and new technology; |
| (6) To engage in the supply of district heating business; | (4) To engage in market research, management advisory and consulting services; |
| (7) To engage in marine transportation, processing and sales of minerals within or outside of Korea; | (5) To engage in technology research and commissioned services; |
| (8) To engage in educational service and other services related to business; | (6) To engage in matters entrusted by subsidiaries to assist the subsidiaries' businesses; |
| (9) To engage in manufacture, process and sale of non-ferrous metal; | (7) To engage in the supply of gas such as hydrogen and resources development business; |
| (10) To engage in technology license sales and engineering business; and | (8) To engage in leasing of real estate and distribution businesses; and |
| (11) To engage in all other conducts, activities or businesses which are related, directly or indirectly, to the attainment and continuation of the foregoing purposes | (9) To engage in all other conducts, activities or businesses which are related, directly or indirectly, to the attainment and continuation of the foregoing purposes. |

---

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**2. Business Organization** 

**A. Highlights of the Company's Business Organization** 

(1) Location of the Headquarters

---

| | | |
|:---|:---|:---|
| | **Before the vertical spin-off**<br> **(Beginning of 2022)** | **After the vertical spin-off**<br> **(As of the date of submission)** |
| <br>**Name** | **POSCO** | **POSCO HOLDINGS INC.** |
| Location of the<br> Headquarters | 6261 Donghaean-ro (Goedong-dong),<br> Nam-gu, Pohang-si, Gyeongsangbuk<br> - do, Korea | 6261 Donghaean-ro (Goedong-dong),<br> Nam-gu, Pohang-si, Gyeongsangbuk<br> - do, Korea |

---

(2) Summary of consolidated subsidiaries

(Number of companies)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Number of consolidated subsidiaries** | **Number of consolidated subsidiaries** | **Number of consolidated subsidiaries** | **Number of consolidated subsidiaries** | **Number of**<br> **major subsidiaries** |
| | **Jan 1, 2025** | **Increase** | **Decrease** | **Dec 31, 2025** | **Number of**<br> **major subsidiaries** |
| Listed | 6 |  |  | 6 | 6 |
| Unlisted | 187 | 16 | 11 | 192 | 81 |
| Total | 193 | 16 | 11 | 198 | 87 |

---

\* The number of consolidated companies above does not include POSCO HOLDINGS

\* Among listed corporations, there is one overseas corporation

(5 domestic corporations and 1 overseas corporation).

\* Newly included subsidiaries: POSCO DEEPTECH IP FUND, FUTURE GRAPH CO., LTD., CHEMGAS KOREA CO.,LTD., POSCO-EVER NEW MEDICAL Investment Fund, POSCO Stainless Precision & Processing, POSCO INTERNATIONAL CVC 1st Fund, POSCO CVC 1st Fund, New Zero 2nd Co., Ltd., POSCO DX CVC 1st Fund, POSCO Group AC Fund I, POSCO Safety Solution, Startup Korea Posco group Open innovation Fund, POSCO INTERNATIONAL ALASKA ENERGY LLC, FLOW K CO., Ltd., POSCO FLOW VIETNAM CO., LTD, PT. Prime Agri Resources 

\* Excluded subsidiaries: SANPU TRADING Co., Ltd., New Energy Hub, POSCO CNGR Nickel Solution, POSCO ENGINEERING & CONSTRUCTION VIETNAM COMPANY LIMITED, SK SOLRA POWER GENERATION COPORATION, POSCO (Suzhou) Steel Processing Center Co., LTD, SUZHOU POSCO-CORE TECHNOLOGY CO., LTD, Mastern No.123 Yeoju Samgyo PFV CO., Ltd, POSCO ENGINEERING & CONSTRUCTION DO BRAZIL LTDA, Consus Private Real Estate Fund 2, Consus Pf Private Real Estate Fund 

------

(3) Major Changes in the Board of Directors

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Date of**<br> **Change** | **Type of General<br>Meeting of<br>Shareholders** | **Appointment** | **Appointment** | **Expiration of Term** |
| **Date of**<br> **Change** | **Type of General<br>Meeting of<br>Shareholders** | **New** | **Re-appointment** | **Expiration of Term** |
| March 12, 2021 | Ordinary | Inside Director<br> CHUNG, Chang Hwa | Representative Director CHOI, Jeong Woo | Inside Director<br> CHANG, In Hwa |
| March 12, 2021 | Ordinary | Outside Director<br> YOO, Young Sook | Representative Director KIM, Hag Dong | Outside Director<br> KIM, Joo Hyun |
| March 12, 2021 | Ordinary | Outside Director<br> KWON, Tae-Kyun | Representative Director CHON, Jung Son | Outside Director<br> BAHK, Byong Won |
| March 12, 2021 | Ordinary |  | Inside Director<br> JEONG, Tak |  |
| March 12, 2021 | Ordinary |  | Outside Director<br> KIM, Sung Jin |  |
| March 18, 2022 | Ordinary | Inside Director<br> YOO, Byeong Og | Representative Director CHON, Jung Son | Representative Director<br> KIM, Hag Dong |
| March 18, 2022 | Ordinary | Non-standing Director<br> KIM, Hag Dong | Inside Director<br> CHUNG, Chang Hwa | Inside Director<br> JEONG, Tak |
| March 18, 2022 | Ordinary | Outside Director<br> YOO, Jin Nyong**\***  | Outside Director<br> PAHK, Heui Jae | Outside Director<br> KIM, Shin Bae |
| March 18, 2022 | Ordinary | Outside Director<br> SOHN, Sung Kyu**\***  |  | Outside Director<br> CHUNG, Moon Ki |
| March 17, 2023 | Ordinary | Representative Director<br> JEONG, Ki Seop | Inside Director<br> YOO, Byeong Og | Representative Director<br> CHON, Jung Son |
| March 17, 2023 | Ordinary | Inside Director<br> KIM, Ji Yong | Non-standing Director<br> KIM, Hag Dong | Inside Director<br> CHUNG, Chang Hwa |
| March 17, 2023 | Ordinary | Outside Director<br> KIM, Joongi\* |  | Outside Director<br> CHANG, Seung Wha |
| March 21, 2024 | Ordinary | Representative Director<br> CHANG, In Hwa | Representative Director<br> JEONG, Ki Seop | Representative Director CHOI, Jeong Woo |
| March 21, 2024 | Ordinary | Inside Director<br> KIM, Jun Hyung | Outside Director<br> YOO, Young Sook | Inside Director<br> KIM, Ji Yong |
| March 21, 2024 | Ordinary | Inside Director<br> KIM, Ki Soo | Outside Director<br> KWON, Tae Kyun | Inside Director<br> YOO, Byeong Og |
| March 21, 2024 | Ordinary | Outside Director<br> PARK, Sung Wook**\*\***  |  | Outside Director<br> KIM, Sung Jin |
| March 21, 2024 | Ordinary |  |  | Outside Director<br> PAHK, Heui Jae**\*\*\***  |
| March 20, 2025 | Ordinary | Representative Director<br> LEE, Ju Tae | Inside Director<br> KIM, Ki Soo | Representative Director<br> JEONG, Ki Seop |
| March 20, 2025 | Ordinary | Inside Director<br> CHUN, Sung Lae | Outside Director<br> YOO, Jin Nyong | Inside Director<br> KIM, Jun Hyung |
| March 20, 2025 | Ordinary |  | Outside Director<br> SOHN, Sung Kyu**\*\*\*\***  |  |

---

\* The Outside Director KIM, Joongi was newly appointed as Audit Committee Member at the General Meeting of Shareholders held on March 17, 2023.

\*\* The newly appointed Outside Director PARK, Sung Wook was elected as an Outside Director to become an Audit Committee Member at the General Meeting of Shareholders held on March 21, 2024.

------

\*\*\* The Outside Director PAHK, Heui Jae voluntarily resigned from the General Meeting of Shareholders held on March 21, 2024.

\*\*\*\* The Outside Director SOHN, Sung Kyu was re-appointed as Audit Committee Member at the General Meeting of Shareholders held on March 20, 2025.

(4) Changes of the Major Shareholders of POSCO HOLDINGS INC.

Since January 30, 2007, National Pension Service holds the largest number of common shares of POSCO HOLDINGS INC.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) From SK Telecom to National Pension Service

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Date of change: January 30, 2007

For further reference, please refer to the public disclosures of changes in common shares of the largest shareholder on Financial Supervisory Service website (<u>http://dart.fss.or.kr</u>)

**B. POSCO HOLDINGS' Merger, Acquisition and Handover of Businesses** 

(1) January 2022: Handover of logistic related business to POSCO Terminal

(2) March 2022: Completion of vertical spin-off

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| | | |
|:---|:---|:---|
| **Classification** | **Company Name** | **Business Unit** |
| Surviving Company | POSCO HOLDINGS INC. | Development of future business portfolios and management of group's businesses |
| New Company | POSCO | Production and sale of steel |

---

**3. Changes in Share Capital** 

There have been no changes in share capital in the last 5 years.

(Unit: Share, KRW/share, KRW million)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Type** | **Details** | **As of December 31, 2025** | **As of December 31, 2024** | **As of December 31, 2023** |
| Common Stock | Total number of issued shares | \*\*80,932,952 | \*82,624,377 | 84571230 |
| Common Stock | Par value(KRW) | 5000 | 5000 | 5000 |
| Common Stock | Share capital | 482403 | 482403 | 482403 |
| Preferred Stock | Total number of issued shares |  |  |  |
| Preferred Stock | Par value(KRW) |  |  |  |
| Preferred Stock | Share capital |  |  |  |

---

------

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Type** | **Details** | **As of December 31, 2025** | **As of December 31, 2024** | **As of December 31, 2023** |
| Others | Total number of issued shares |  |  |  |
| Others | Par value(KRW) |  |  |  |
| Others | Share capital |  |  |  |
| Sum | Share capital | 482403 | 482403 | 482403 |

---

\* The decision made on July 12, 2024 by the Board of Directors to cancel treasury shares reduced the total number of shares issued by the company from 84,571,230 to 82,624,377; however, no change is observed in the size of the capital. 

\*\* The decision made on February 19, 2025 by the Board of Directors to cancel treasury shares reduced the total number of shares issued by the company from 82,624,377 to 80,932,952; however, no change is observed in the size of the capital. 

**4. Other Information Regarding Shares** 

**A. Total Number of Shares** 

(As of December 31, 2025)

---

| | |
|:---|:---|
| **Authorized Shares** | **Issued Shares** |
| 200000000 | 80932952 |

---

![LOGO](g59318adsp12.jpg) Currency of the Republic of Korea is Korean Won ("KRW").

![LOGO](g59318adsp12.jpg) Par Value: KRW 5,000 per share

![LOGO](g59318adsp12.jpg) The decision made on February 19, 2025 by the Board of Directors to cancel treasury shares reduced the total number of shares issued by the company from 82,624,377 to 80,932,952 without any change in capital. For more details, please refer to the 'Cancellation of Treasury Shares' disclosed on February 19, 2025, at SEC.

**B. Treasury Shares Acquisition and Disposal**

(As of December 31, 2025)

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Method of<br>Purchase** | **Type** | **Beginning**<br>**Balance** | **Increased** | **Decreased** | **Cancelled** | **Ending**<br>**Balance** | **remark** |
| Direct | Common<br> Stock | 3687724 |  |  | 1691425 | 1996299 | (1) |
| Trust Contract | Common<br> Stock | 3315874 |  |  |  | 3315874 |  |
| Total | Common<br> Stock | 7003598 |  |  | 1691425 | 5312173 | (2) |

---

(1) On February 19, 2025, the board of directors resolved to cancel 1,691,425 previously acquired treasury
shares, reducing the number of treasury shares from 7,003,598 to 5,312,173. For more detail, please refer to the 'Cancellation of Treasury Shares' disclosed on February 19, 2025, to the SEC.

(2) The aforementioned number of treasury shares includes 86,611 treasury shares which are subject to the exchange
of exchangeable bonds issued by the company on September 1, 2021. The treasury shares subject to this exchange is finalized at the time the exchange right is exercised and is currently deposited with the Korea Securities Depository.

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**5.** **Voting Rights** 

(As of December 31, 2025)

---

| | | |
|:---|:---|:---|
| **Classification** | **Number of Common Shares** | **Remarks** |
| (1) Number of Issued Shares | 80932952 |  |
| (2) Shares without Voting Rights | 5312173 | Treasury stock |
| (3) Shares with Voting Rights | 75620779 |  |

---

**6.** **Earnings and Dividends** 

(Unit: KRW million)

---

| | | | |
|:---|:---|:---|:---|
|  | **2025** | **2024** | **2023** |
| (Consolidated) Profit**\*** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;657654 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1094917 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1698092 |
| (Separate) Profit | 494878 | 1621282 | 799578 |
|  Earnings per Share**\*\*** (Consolidated, KRW) | 8697 | 14451 | 22382 |
|  Cash Dividend Paid | 756208 | 757485 | 758762 |
|  Pay-out Ratio (Consolidated, %) | 115.0 | 69.2 | 44.7 |
|  Dividend per Share (KRW) | 10000 | 10000 | 10000 |
|  Dividend Yield (%) | 2.8 | 4.0 | 2.4 |

---

\* (Consolidated) Profit: Profit attributable to owners of the controlling company

\*\* Earnings per Share is based on consolidated financial statement prepared in K-IFRS

**7.** **Stock Price and Trading Volumes** 

The stock prices and trading volumes of POSCO HOLDINGS INC. for the last 6 months are as follows.

**A. The Korean Stock Market** 

(Unit: KRW/share, Thousand shares)

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | **July**<br>**2025** | **August**<br>**2025** | **September**<br>**2025** | **October**<br>**2025** | **November**<br>**2025** | **December**<br>**2025** |
|  Common Share | Highest Price | 335000 | 309000 | 285000 | 327000 | 321500 | 319500 |
|  Common Share | Lowest Price | 276000 | 285500 | 275000 | 263000 | 299000 | 302500 |
|  Common Share | Average Price | 314935 | 298800 | 280886 | 297167 | 310500 | 310238 |
|  Trading volume | Daily highest | 1421 | 502 | 536 | 711 | 706 | 431 |
|  Trading volume | Daily lowest | 275 | 123 | 131 | 141 | 168 | 144 |
|  Trading volume | Monthly | 11903 | 4727 | 5158 | 8257 | 6787 | 5431 |

---

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**B. New York Stock Exchange** 

(Unit: USD/ADS\*, Thousand ADS\*)

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | | **July**<br>**2025** | **August**<br>**2025** | **September**<br>**2025** | **October**<br>**2025** | **November**<br>**2025** | **December**<br>**2025** |
|  American Depositary Share (ADS) | Highest Price | &nbsp;&nbsp;&nbsp;&nbsp;61.15 | &nbsp;&nbsp;&nbsp;&nbsp;56.39 | &nbsp;&nbsp;&nbsp;&nbsp;52.12 | &nbsp;&nbsp;&nbsp;&nbsp;57.47 | &nbsp;&nbsp;&nbsp;&nbsp;55.11 | &nbsp;&nbsp;&nbsp;&nbsp;54.66 |
|  American Depositary Share (ADS) | Lowest Price | 51.91 | 51.59 | 48.73 | 45.13 | 51.78 | 51.01 |
|  American Depositary Share (ADS) | Average Price | 56.99 | 54.11 | 50.53 | 51.42 | 53.58 | 53.24 |
|  Trading volume | Daily highest | 346 | 215 | 292 | 219 | 284 | 226 |
|  Trading volume | Daily lowest | 78 | 53 | 68 | 70 | 100 | 63 |
|  Trading volume | Monthly | 3794 | 2317 | 3138 | 3034 | 2971 | 2765 |

---

\* ADS: One American Depositary Share represents one-fourth of one Common Share

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**II. BUSINESS** 

**1. Overview** 

**A. Classification of Business** 

We classify our business into six segments:

Steel, Infrastructure (Trading), Infrastructure (Construction), Infrastructure (Logistics and associated businesses), Rechargeable Battery Materials, and Others.

**B. Summary of Financial Status of Segment** 

(Unit: KRW million)

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business**<br> **Segment** | **2025** | **2025** | **2024** | **2024** | **2023** | **2023** |
| **Business**<br> **Segment** | **Sales** | **Operating<br>Income<br>(Loss)** | **Sales** | **Operating<br>Income<br>(Loss)** | **Sales** | **Operating<br>Income<br>(Loss)** |
|  Steel | 59413172 | 1960162 | 62200920 | 1636808 | 63538698 | 2556779 |
|  Infrastructure (Trading) | 42220911 | 1102781 | 42903253 | 1113710 | 42943752 | 1133512 |
|  Infrastructure (Construction) | 7228333 | -504421 | 9829578 | 64804 | 10267503 | 197352 |
|  Infrastructure (Logistics and etc.) | 3554224 | 83603 | 4139201 | 147603 | 3945953 | 202010 |
|  Rechargeable Battery Materials | 3338386 | -440863 | 3829851 | -277472 | 4821886 | -161334 |
|  Others | 1500108 | 972350 | 2111150 | 1600212 | 1562214 | 1106332 |
|  Total | 117255134 | 3173612 | 125013953 | 4285664 | 127080006 | 5034651 |

---

\* Based on aggregation including internal transactions among affiliates.

\* 'Energy Materials' segment was renamed as 'Rechargeable Battery Materials' by management decision in June 2025.

**2. Business Status of Segments** 

**A. Steel** 

There are 86 consolidated companies in the steel segment, e.g., POSCO and POSCO STEELEON, and overseas companies, including PT.Krakatau POSCO in Indonesia, POSCO (Zhangjiagang) Stainless Steel Co., Ltd. in China, and overseas processing centers.

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∎ **POSCO** 

**(1) Summary of Business** 

POSCO produces steel components, such as hot rolled, cold rolled, and stainless steel, at Pohang Steelworks and Gwangyang Steelworks, of which latter is the largest in the world.

Steel is a key industry that has served a pivotal role in achieving national economic development. Steel is used as a basic material in diverse manufacturing businesses, such as automobiles, shipbuilding, home appliances and construction; therefore, steel, by its nature, is intricately connected to the frontline industries.

In 2025, cumulative global crude steel production declined year-on-year. The decrease is attributed to structural changes in the steel trade environment due to rising protectionism, persistent sluggish demand across global construction and manufacturing, and reduced output from China following its prolonged real estate downturn.

**Global Crude Steel Production** 

(Unit: Million Ton, %)

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| | | | |
|:---|:---|:---|:---|
| **Crude Steel Production** | **2025** | **2024** | **2023** |
|  Global | 1804 | 1839 | 1850 |
|  Korea | 62 | 64 | 67 |
| (Ratio) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.4%) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.5%) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.6%) |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;※ Source: worldsteel (www.worldsteel.org)

The steel industry is affected by the business cycle and fluctuations in the demand industry.

Therefore, steel demand is impacted by changes in the real economy as well as market conditions of demand industries, i.e., shipbuilding, automobiles, home appliance, and construction.

The steel industry is a capital- and technology-intensive industry that requires massive initial investment. Hence, steelmakers are focused on reducing production costs to achieve price competitiveness.

POSCO aims to maintain its competitive edge in the domestic market by strengthening long-term partnership with key customers and by devising comprehensive responses, such as marketing, R&D, technology services, and productions, to address global protectionism. In addition, we are expanding steel processing centers to meet the needs of global frontline industries, such as automobiles, shipbuilding, home appliances, and construction, while strengthening our global sales network by operating steel production bases in Indonesia (upstream) and India (cold-rolling mills). Additionally, we are seeking opportunities to expand overseas production capacity; one such example is the JV project completed with Hebei Steel.

------

On the production side, we are developing strategic, high value-added World Top Premium products and upgrading sales network to actively respond to the growing demand for next-generation, carbon-reduced steel in new mobility, low-carbon energy, and smart infrastructure. Furthermore, we aim to lead the global initiative to achieve carbon net-zero; hence we have developed a decarbonization roadmap, which includes the construction of a HyREX (hydrogen-based steelmaking) technology demo plant.

**(2) Market Share** 

(Unit: Million Ton, %)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Category** | **2025** | **2025** | **2024** | **2024** | **2023** | **2023** |
| **Category** | **Production** | **Market share** | **Production** | **Market share** | **Production** | **Market share** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Crude Steel Production | 62 | 100.0% | 64 | 100.0% | 67 | 100.0% |
| POSCO | 35 | 56.5% | 35 | 55.2% | 36 | 53.5% |
| Others | 27 | 43.5% | 29 | 45.8% | 31 | 46.5% |

---

※ Source: worldsteel (www.worldsteel.org)

The steel industry's major demand sectors include automobiles, shipbuilding, and construction, in which steel is a key raw material. The company's sales consists of approximately 52% domestic sales and 48% exports, with Southeast Asia, Japan and Europe accounting for a significant portion of exports. We maintain a make-to-order production and sales system while keeping the proportion of direct sales to end-users in the domestic market at around 61% to secure sales stability.

To effectively adapt to changing market dynamics, the Company is carrying out a comprehensive strategy to reinforce our core competitiveness, optimize the product portfolio, foster a safe working environment, and lead the transition toward decarbonization and AI. Detailed initiatives are outlined below.

With a strategy that fuels innovation across all areas, we are strengthening our fundamental competitiveness. Our efforts include technology-driven cost reduction and enhanced robustness of facilities that directly impact product quality. Additionally, to proactively respond to shifts in demand industries, our domestic and overseas operations are being realigned to focus on premium steel. Furthermore, we are bolstering productivity and efficiency through facility automation and business process innovations.

POSCO is readjusting its product portfolio to focus on strategic products in order to address evolving trends in steel-consuming industries. We are downsizing facilities for low-profit commodity products while aggressively investing in production lines for high-value-add products. Furthermore, our R&D organizations will be reorganized around these strategic priorities. In parallel, we are upgrading our regional portfolio strategy to optimize global competitiveness.

------

Safety is our top priority and a core value of our corporate culture. We are reinforcing safety by identifying potential hazards in the workplace and ensuring compliance to safety standards, while also developing safety solutions utilizing AI technologies.

We are strategically spearheading decarbonization and AI transformation. Our organizational capabilities are focused on ensuring stable operation of the Electric Arc Furnace (EAF), which is slated for full-scale operation this year. In alignment with national greenhouse gas (GHG) reduction targets, we are making thorough, company-wide efforts to commercialize HyREX (Hydrogen Reduction Ironmaking) technology and to secure a stable supply of low-carbon fuel and raw materials. Furthermore, to build the 'POSCO-style AI Steelworks,' we are expanding investments and fostering specialized talent as we automate high-risk, low-efficiency manual tasks and scale up the Intelligent Factory model plants.

Even though POSCO is an unlisted company and therefore does not have any obligation to establish a special committee under the board of directors, we have created an ESG committee to strengthen our external communication with interested parties. Furthermore, we have also established an audit committee to support ESG governance. As a result, the company has been named Sustainability Champion by the World Steel Association — an honor awarded to leading companies in the ESG field — for four consecutive years.

∎ **POSCO STEELEON** 

POSCO STEELEON offers differentiated value by developing new market and technology and by providing designs and solutions in both domestic and overseas surface-treated steel market.

The surface-treated steel market is divided into general-purpose and high-end segments. Competition is fierce in the general-purpose market because product technology is standardized and the market is flooded with low-priced Chinese products. On the other hand, we believe that the market for high-end material not only generates high added value but also has potential to grow in terms of size.

Despite challenges posed by oversupply of domestic and foreign steel products and slowdown in demand industries, POSCO STEELEON is striving to secure a stable profit base and expand market share by improving the competitiveness of high valued-added products, such as aluminum coated sheets, galvanized steel sheets with high corrosion resistance, and Print/Lami color steel sheets.

POSCO STEELEON is striving to strengthen its competitiveness in the high-end construction/exterior materials through research and development customized to customer needs. In addition, POSCO STEELEON is preparing to expand its overseas business; the company operates a color steel sheet production line (50,000 ton) and coated steel sheet production line (20,000 ton) in Yangon, Myanmar, securing a bridgehead in Southeast Asia, a region projected for rapid growth.

------

∎ **POSCO M-TECH** 

**(1) Summary of Business** 

POSCO M-TECH is a specialized supplier of packaging and supplementary materials for steel. This includes aluminum deoxidizers, which removes oversaturated oxygen in the steelmaking process. POSCO M-TECH continuously develops packaging machines and materials for steel products. The steel packaging business has enhanced cost competitiveness by reducing packaging materials and improving packaging quality, while the packaging equipment business has focused on developing automated equipment.

**Business Areas** 

---

| | | |
|:---|:---|:---|
| **Business Areas** | **Major Goods and Services** | **Major Customer** |
| Steel raw material business | Aluminum deoxidizer pellets, mini pellets, ingots and etc. | POSCO |
| Steel product packaging business | Steel packaging service, maintenance of packaging facilities and etc. | POSCO |
| Engineering business | Steel packaging engineering, mechanical equipment and etc. | POSCO |
| Consignment operation business | Ferro-manganese factory and etc. | POSCO |

---

**(2) Market Share** 

(Unit: Ton)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Category** | **2025** | **2025** | **2024** | **2024** | **2023** | **2023** |
| **Category** | **Sales<br>Volume** | **Market<br>share** | **Sales<br>Volume** | **Market<br>share** | **Sales<br>Volume** | **Market<br>share** |
|  POSCO M-TECH | 35387 | 41.3% | 38284 | 44.3% | 31984 | 44.7% |
|  PJ Metal | 50213 | 58.7% | 48231 | 55.7% | 39600 | 55.3% |
|  Total | 85600 | 100.0% | 86515 | 100.0% | 71584 | 100.0% |

---

※ The exact market share of aluminum deoxidizers cannot be estimated since total domestic production and sales
volume are not tallied.

**B. Infrastructure [Trading segment]** 

There are 38 subsidiaries in trading segment including POSCO INTERNATIONAL.

∎ **POSCO INTERNATIONAL** 

**[Trading]** 

The industrial environment is becoming increasingly challenging as protectionism intensifies in major economies and global economic downturn continues. Nevertheless, POSCO INTERNATIONAL is pioneering new markets and businesses. Leveraging its long-accumulated know-how and extensive overseas network, the company is strengthening the value chains of its core businesses — including materials, mobility, and food — while fostering future growth through its bio business.

------

**Market Share** 

(Unit: USD million)

---

| | | | |
|:---|:---|:---|:---|
| **Category** | **2025** | **2024** | **Growth Rate** |
|  All Trading Companies in Korea | 709407 | 683609 | 3.8% |
|  POSCO INTERNATIONAL Corp. | 7780 | 8684 | -10.4% |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;※ Source: Korea International Trade Association (www.kita.net)

• **Steel/Mobility business**: Through collaboration with other POSCO Group affiliates, we are generating
synergies to expand our business portfolio. We are in the process of establishing supply chains for the renewable energy industry and Hot Briquetted Iron (HBI) feedstock for the steelworks, while further strengthening our role in securing stable raw
material supplies for rechargeable battery materials.

• **Motor core business:** POSCO INTERNATIONAL started engaging in the electric vehicle (EV) motor core business
with POSCO Mobility Solution, the company's subsidiary. We plan to expand our motor core production to 7.5 million by 2030. In particular, we demonstrate first-class quality competitiveness by leveraging POSCO's high-quality non-oriented (NO) electrical steel and POSCO Mobility Solution's proprietary stacking technology in our production.

• **Palm farm in Indonesia**: Through the development of the PT. BIA palm plantation in Indonesia, we have
established a stable Crude Palm Oil (CPO) production system and secured profitability. We operate a sustainable palm business based on RSPO certification. Notably, in 2025, we significantly expanded our production base by completing the acquisition
of PT. Sampoerna Agro (now renamed PT. Prime AgriResources), a listed Indonesian company. In the second half of the same year, we completed the construction of a refinery with annual capacity of 500,000 tons. Consequently, we have successfully
integrated upstream and midstream processes to our value chain, spanning 'seed-plantation-milling-refining,'.

**[Energy]** 

Global demand for natural gas remains strong, particularly with rising power demand from AI-driven growth of the digital industry. Asia's surging energy demand is also boosting the oil and gas development sector. The company aims to enhance competitiveness in the energy business and ensure stable operations in a shifting market.

• **Myanmar Gas Field business**: In February 2021, as part of the third phase of the development project, the
company began EPCIC to install a gas compression platform to produce low-pressure gas from the reservoir. Since completing construction in April 2024, the company has been producing gas through the new
facilities since May 2024. Additionally, in July 2024, we began construction on the fourth phase of the development project, which will secure additional reserves to sustain the current level of gas production, with plans to begin operation in 2027.

------

• **Onshore gas business in Australia:** For timely implementation of the Group's decarbonization and
hydrogen business strategies and to expand its existing energy business, currently centered in Myanmar, the company acquired Senex Energy Limited in Australia. Senex Energy Limited is an energy company located in Brisbane on the east coast of
Australia, that produces gas from onshore oil and gas fields in eastern Australia for domestic and overseas customers. By the end of 2025, we completed the construction of three gas processing plants, establishing a 60PJ annual production system,
with efforts to continue growing our production and sales volumes.

• **LNG terminal & connected business:** The Gwangyang LNG Terminal, Korea's first
privately operated LNG import terminal, has a storage capacity of 930,000 KL across six tanks. By the end of 2026, we will expand to build two additional units to obtain total storage capacity of 1,330,000 KL. Serving as a key facility in the LNG
value chain, it plays a pivotal role in connecting upstream LNG production with the downstream gas supply to end-users. The company is pursuing phased expansion beyond Gwangyang to meet both local demand and
captive demand within the Group, while actively expanding into LNG bunkering, ship commissioning, and trading businesses.

• **Power generation business:** As the first private power generator in Korea, our Incheon LNG Combined Cycle
Power Plant has been delivering reliable power supply to the Seoul metropolitan area for over 50 years. Located in Incheon's Seo-gu district, the plant operates seven combined cycle power generators with
total capacity of 3,412 MW, which accounts for about 9% of the region's generation capacity. The power plant is a smart power generation facility, incorporating IoT and big data technologies in its operations.

• **Domestic onshore wind power business:** In January 2015, the Sinan Green Energy acquired a business permit
to run an onshore wind farm in Jaeun-myeon in Sinan-gun city of the Jeollanam-do province. We are operating 20 onshore wind power generators since their installation in
2019. With a generation capacity of 62.7 MW, this onshore wind power complex produces approximately 120,000 MWh of clean energy annually, which is equivalent to removing 49,000 tons of carbon dioxide emissions annually.

• **Expansion into new business** To reduce carbon emissions, the company is developing LNG-hydrogen co-firing power generation, with plans to further expand LNG and renewable energy projects both domestically and internationally.

**B. Infrastructure [Construction segment]** 

There are 21 subsidiaries in construction segment including POSCO E&C.

------

∎ **POSCO E&C** 

**[Plant Business]** 

POSCO E&C has established a unique position in the domestic steel plant sector with extensive experience in supplying and constructing equipment for integrated steel mills and auxiliary facilities. The company has expanded into global markets, such as India, Brazil, and Indonesia, enhancing its reputation as a global player. Recently, the company has focused on carbon-reduced steel technologies and water electrolysis projects. In power generation, POSCO E&C was the first construction company to enter the South American market in 2006 to build coal-fired and gas combined cycle power plants. The company is also expanding involvement in nuclear power projects, including large-scale plants and national projects like i-SMR. In addition, by being the first in the world to apply high-manganese steel in LNG tank construction, the company has participated in numerous domestic and overseas LNG terminal projects, e.g., Gulf MTP LNG terminal projects in Thailand. We have also built multiple plants in Pohang, Gwangyang, Argentina, and North America to produce raw materials and components for the rechargeable battery.

The company has an extensive track record in various sectors, including roads, bridges, airports, seaports, and water treatment, and continues to expand its presence in the world. Particularly in the offshore wind sector, the company is focused on signing projects and collaborating with global industry leaders to take early action to gain dominance in the market. In effect, the company aims to systematically enhance our project execution capability and take a leading position as an EPC player in the offshore wind industry.

**[Construction Business Sector]** 

POSCO E&C has top class construction capabilities, product development capabilities, and commercialization capabilities in the field of high-rise buildings and large-scale new city development. Representatively, the company is leading the Songdo International Business City Development Project and have successfully completed high-rise/supersize landmark projects such as POSCO Tower Songdo, Busan Haeundae LCT, and Yeouido Park One. Additionally, in the fields of urban redevelopment/reconstruction and remodeling, POSCO E&C has achieved the highest number of orders in the industry, earning recognition for its brand value from consumers and successfully executing numerous projects. Recently, our offerings are differentiated to meet diverse customer needs; 'HAUTIERE' is our high-end residential brand that joins other premium solutions. In light of the upcoming super-aged society, the company plans to diversify its portfolio by continuously expanding into new business, such as senior residences.

**B. Infrastructure [Logistics and etc. segment]** 

There are 15 subsidiaries of logistics and etc. segment including POSCO Flow and POSCO DX.

⬛ **POSCO DX** 

POSCO DX has both IT and operation automation technology (OT) capabilities. By converging IT and OT, the company has acquired prominence in applying this technology to manufacturing. Leveraging its proprietary AI-based platform, PosFrame, POSCO DX rolled out the Smart Factory technologies at POSCO's steelworks and has since expanded its application into rechargeable battery material production processes as well as food & beverage manufacturing. As a result, POSCO DX is now known as a specialized provider of Smart Factory solutions. More recently, the company has been integrating AI and robotics to kick Smart Factory operations into next gear and to build the Intelligent Factory.

------

In addition, based on its capabilities in building fulfillment logistics systems and hubs, POSCO DX delivered projects such as POSCO's logistics facilities, Incheon Airport's Baggage Handling System (BHS), and Hanjin Express's Mega Hub logistics center.

**C. Secondary Battery Materials Segment** 

Secondary Battery Materials segment includes businesses related to EV battery materials, such as lithium, nickel, cathode material, anode material, and recycling, and there are a total of 16 subsidiaries, including POSCO Future M and POSCO Argentina.

⬛ **POSCO Future M** 

**[Basic Industrial Materials]** 

**- Refractory production**: Refractories maintain their chemical properties and strength even at high temperatures, making them indispensable in industrial facilities, including the furnaces in steelworks and petrochemical plants. In the refractory business, POSCO Future M produces refractories and installs them in blast furnaces and various plants. Recognized for its expertise in refractory installation, the company is expanding its business to plants in other fields both domestically and internationally. However, there are challenges due to overproduction by refractory companies worldwide and the flood of Chinese low-cost products entering the market. Therefore, POSCO Future M is striving to secure competitiveness in the global market by achieving maximum cost competitiveness and developing high value-added products.

**- Lime business**: The quicklime market is dominated by POSCO and Hyundai Steel, which together account for over 90% of the total quicklime used for steelmaking. POSCO Future M is the largest supplier to POSCO.

**[Energy Materials]**

In order to leap forward as an energy materials company, POSCO Future M acquired the anode materials division of LS Mtron in August 2010 and merged with the cathode materials company POSCO ESM in April 2019. POSCO Future M produces both anode active materials (anode materials) and cathode active materials (cathode materials), which are high-value-added materials in the rechargeable battery value chain.

As an integral part of POSCO Group, POSCO Future M has established a full battery materials value chain, ranging from raw to active battery materials and battery recycling. It is the only company to produce graphite-based anode materials, a critical mineral predominated by China. Therefore, the company expects sales to increase in the future by supplying global automakers and battery makers that seek to decouple from China.

------

However, if POSCO Group's production of raw materials, such as lithium, nickel, and graphite, declines or is delayed against the plan or if we are unable to meet the stricter Rules of Origin guidelines, we may not be able to reap all of the projected benefits.

**D. Others** 

In Others segment, there are 23 subsidiaries in total, including POSCO HOLDINGS. POSCO HOLDINGS is focusing on investment in new growth businesses and opportunities.

**3. Key Products** 

**A. Sales of Key Products (2025)** 

(Unit: KRW hundred million, %)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Business** <br> **Segment**  | **Item /**<br> **Business Sector** | **Specific Use** | **Total Sales** | **Ratio** |
| Steel | Hot-rolled Product (HR) | Steel pipe, Shipbuilding, etc. | 122271 | 20.6% |
| Steel | Cold-rolled Product (CR) | Automobile, Home appliances, etc. | 190715 | 32.1% |
| Steel | Stainless Steel Products | Tableware, pipes, etc. | 97478 | 16.4% |
| Steel | Others | Plates, Wire rods, etc. | 183668 | 30.9% |
|  | Gross Sum | Gross Sum | 594132 | 100.0% |
|  | Deduction of Internal Trade | Deduction of Internal Trade | -221283 |  |
|  | Sub Total | Sub Total | 372849 |  |
| Infra-structure | Trading | Steel, Metal | 309657 | 58.4% |
| Infra-structure | Trading | Chemical, Strategic Item, Energy | 71711 | 13.5% |
| Infra-structure | Trading | Others | 40403 | 7.6% |
| Infra-structure | Construction | Architecture (Domestic) | 42872 | 8.1% |
| Infra-structure | Construction | Plant (Domestic) | 20378 | 3.8% |
| Infra-structure | Construction | Others (Domestic) | 1807 | 0.3% |
| Infra-structure | Construction | Overseas Construction | 3905 | 0.7% |
| Infra-structure | Construction | Owned Construction | 1282 | 0.2% |
| Infra-structure | Construction | Others | 4957 | 0.9% |
| Infra-structure | Logistics and etc. | Others | 33063 | 6.2% |
|  | Gross Sum | Gross Sum | 530035 | 100.00% |
|  | Deduction of Internal Trade | Deduction of Internal Trade | -233353 |  |
|  | Sub Total | Sub Total | 296682 |  |

---

------

(Unit: KRW hundred million, %)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Business** <br> **Segment**  | **Item /**<br> **Business Sector** | **Specific Use** | **Total Sales** | **Ratio** |
| Rechargeable Battery Materials | Gross Sum | Gross Sum | 33384 | 100.0% |
| Rechargeable Battery Materials | Deduction of Internal Trade | Deduction of Internal Trade | -12421 |  |
|  | Sub Total | Sub Total | 20963 |  |
| Others | Gross Sum | Gross Sum | 15000 | 100.0% |
| Others | Deduction of Internal Trade | Deduction of Internal Trade | -14545 |  |
|  | Sub Total | Sub Total | 455 |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total Sum | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total Sum | 690949 |  |

---

\* 'Energy Materials' segment was renamed as 'Rechargeable Battery Materials' by management decision in June 2025.

\* Due to the organizational restructuring of POSCO E&C in December 2025, the performance of 'Civil Engineering (Domestic)' sector has been consolidated into 'Plant (Domestic)' sector.

**B. Key Products Price Variation** 

(Unit: KRW thousand/ Ton, KRW/kWh)

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Products** | **2025** | **2025** | **2024** | **2024** | **2023** | **2023** |
|  Steel | Hot-rolled Product (HR) |  | 869 |  | 910 |  | 967 |
|  Steel | Cold-rolled Product (CR) |  | 1068 |  | 1144 |  | 1157 |
|  Infrastructure (Trading) | Electric Power |  | 144 |  | 160 |  | 205 |
|  Rechargeable Battery Materials | Refractory |  | 973 |  | 1001 |  | 991 |
|  Rechargeable Battery Materials | Lime |  | 158 |  | 142 |  | 147 |

---

\* Construction and Logistics and associated businesses segments of Infrastructure are omitted because the raw materials fluctuations defy meaningful measurement. In the case of the Rechargeable Battery Materials business, detailed descriptions are omitted to avoid risk of information leakage. 

**[Steel]** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) Criteria for Calculation

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Subjects for Calculation: Unit sales prices of the standard hot-rolled product and cold-rolled product

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Calculation Method and Unit: The average price of each product based on its total sales including the freight
costs during the given period.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) Price Changing Factors

Key external factors include global economic conditions, international trade environment, and demand volumes from major steel-consuming industries (construction, manufacturing, etc.)

------

**[Infrastructure (Trading Segment)]** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) Criteria for Calculation

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Subjects for Calculation: Price of electric power

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Calculation Method and Unit: Unit price per electric power ÷ Net power volume generated

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) Price Changing Factors

- Power: Korea Gas Corporation cost, etc.

\* The cost consists of introduction cost, supply cost, etc., and is affected by crude oil and exchange rates

**[Rechargeable Battery Materials]** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) Criteria for Calculation

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Subjects for Calculation: Unit price of refractory and quicklime

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Calculation Method and Unit: The average price of each product based on its total sales including the freight
costs during the given period.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) Price Changes Factors

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Price of refractories: Affected by business condition of the front industry and raw material cost.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Quicklime price: Mainly influenced by utility unit price and raw materials cost.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C) Raw materials for energy materials: Subject to price fluctuations depending on the international supply of
mineral resources.

**4. Major Raw Materials** 

**A. Current Status of Major Raw Materials (2025)** 

(Unit: KRW hundred million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Type of<br>Purchase** | **Item** | **Specific Use** | **Purchase**<br>**Amount**<br>**(Portion, %)** | **Portion**<br>**(%)** |
|  Steel | Steel | Raw<br>Materials | Materials for<br> Iron-making | Iron Ore for Blast<br> Furnaces | 144790 | 60.7% |
|  Steel | Steel | Raw<br>Materials | Sub-materials | Sub-materials for Ironmaking, Steelmaking | 52073 | 21.8% |
|  Steel | Steel | Raw<br>Materials | Stainless Steel Materials | Key Materials for<br> STS Production | 41811 | 17.5% |
|  Infra-<br> structure | Trading | Raw<br>Materials | LNG | Material for Power Generation | 13868 | 100.0% |
|  Infra-<br> structure | Construction | Raw<br>Materials | Ready-mixed Concrete | Construction of Structure | 2423 | 22.0% |
|  Infra-<br> structure | Construction | Raw<br>Materials | Steel<br> Reinforcement | Strengthening Concrete | 1830 | 16.6% |
|  Infra-<br> structure | Construction | Raw<br>Materials | Cable | Electricity Transfer | 160 | 1.5% |
|  Infra-<br> structure | Construction | Raw<br>Materials | Steel Pile | Foundation of Structure | 16 | 0.1% |
|  Infra-<br> structure | Construction | Raw<br>Materials | Others | Construction of Pipe and Structure etc. | 6575 | 59.8% |
|  Infra-<br> structure | Logistics<br> and etc. | Raw<br>Materials | Others | For other use | 6155 | 100.0% |
|  Rechargeable Battery<br> Materials | Rechargeable Battery<br> Materials | Raw<br>Materials | NCM and etc. | Production of cathode materials | 13104 | 83.0% |
|  Rechargeable Battery<br> Materials | Rechargeable Battery<br> Materials | Raw<br>Materials | Graphite and etc. | Production of<br> anode materials | 506 | 3.2% |
|  Rechargeable Battery<br> Materials | Rechargeable Battery<br> Materials | Raw<br>Materials | Limestone and etc. | Production of Lime | 1144 | 7.3% |
|  Rechargeable Battery<br> Materials | Rechargeable Battery<br> Materials | Raw<br>Materials | Others | Production of refractory | 1029 | 6.5% |

---

\* Amount: CIF + customs duties + stevedoring fees + other incidental expenses 

------

**B. Price Movement Trends of Major Raw Materials** 

(Unit: KRW thousand)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Category** | **2025** | **2024** | **2023** |
|  Steel | Steel | Iron Ore<br> (per ton) | 133 | 135 | 145 |
|  Steel | Steel | Coal<br> (per ton) | 268 | 329 | 387 |
|  Steel | Steel | Scrap Iron<br> (per ton) | 485 | 505 | 526 |
|  Steel | Steel | Nickel<br> (per ton) | 21559 | 22934 | 28043 |
|  Infrastructure | Trading | LNG<br> (per ton) | 944 | 1058 | 1428 |
|  Infrastructure | Construction | Ready-mixed Concrete<br> (per m<sup>3</sup>) | 88 | 90 | 85 |
|  Infrastructure | Construction | Steel Pile<br> (per m) | 131 | 181 | 165 |
|  Infrastructure | Construction | Steel Reinforcement<br> (per kg) | 0.9 | 0.9 | 0.9 |
|  Infrastructure | Construction | Cable<br> (per m) | 1.2 | 1 | 0.9 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | Refractory<br> (per ton) | 631 | 443 | 334 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | Limestone<br> (per ton) | 25 | 25 | 24 |

---

\* Infrastructure (Logistics and associated businesses) and Others segment are omitted because the raw materials fluctuations defying meaningful measurement. In Rechargeable Battery Materials business, detailed descriptions are omitted to avoid risk of information leakage.

------

**[Steel]** 

(1) Iron Ore: After remaining flat post-Chinese National Day holiday in October, iron ore price rose 4% QoQ to U$96/ton in December driven by winter stockpiling and optimism over economic stimulus measures.

(Unit: U$/Ton)

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **'25.Q4** | **'25.Q3** | **'25.Q2** | **'25.Q1** | **'24.Q4** | **'24.Q3** | **'24.Q2** | **'24.Q1** | **'23.Q4** | **'23.Q3** | **'23.Q2** | **'23.Q1** |
|  96 | 92 | 89 | 96 | 94 | 89 | 101 | 113 | 117 | 106 | 102 | 118 |

---

(2) Coal: Prices rose 9% QoQ to U$200/ton, fueled by potential supply constraints during the wet season in East Australia (Nov–Apr) and robust winter stockpiling by steelmakers.

(Unit: U$/Ton)

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **'25.Q4** | **'25.Q3** | **'25.Q2** | **'25.Q1** | **'24.Q4** | **'24.Q3** | **'24.Q2** | **'24.Q1** | **'23.Q4** | **'23.Q3** | **'23.Q2** | **'23.Q1** |
|  200 | 184 | 184 | 185 | 203 | 211 | 242 | 308 | 334 | 264 | 243 | 344 |

---

(3) Scrap: Prices rose 1% QoQ to U$344/ton, spurred by steel mills' winter inventory demand hike and tight supply resulting from reduced collection during the winter season.

(Unit: U$/Ton)

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **'25.Q4** | **'25.Q3** | **'25.Q2** | **'25.Q1** | **'24.Q4** | **'24.Q3** | **'24.Q2** | **'24.Q1** | **'23.Q4** | **'23.Q3** | **'23.Q2** | **'23.Q1** |
|  344 | 340 | 337 | 342 | 350 | 364 | 376 | 392 | 385 | 385 | 403 | 438 |

---

(4) Nickel: Prices fell 1% QoQ to U$14,892/ton due to market uncertainties triggered by US-China trade conflict which continues to drive down STS and EV battery demand, intensifying oversupply against the previous year.

(Unit: U$/lb, U$/Ton)

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **'25.Q4** | **'25.Q3** | **'25.Q2** | **'25.Q1** | **'24.Q4** | **'24.Q3** | **'24.Q2** | **'24.Q1** | **'23.Q4** | **'23.Q3** | **'23.Q2** | **'23.Q1** |
| 6.75 | 6.81 | 6.88 | 7.06 | 7.27 | 7.37 | 8.35 | 7.53 | 7.83 | 9.23 | 10.12 | 11.79 |
| 14892 | 15014 | 15171 | 15571 | 16038 | 16259 | 18415 | 16589 | 17247 | 20344 | 22308 | 25983 |

---

\* LME: London Metal Exchange

------

**[Infrastructure]** 

(1) Criteria for Calculation

---

| | | | |
|:---|:---|:---|:---|
| **Business Sector** | **Products** | **Criteria for Calculation** | **Factors of Price Changes** |
| Trading | LNG | Average purchase price and LNG direct purchase price of Korea Gas Corporation | Cost of Korea Gas Corporation (cost consists of introduction cost, supply cost, etc. and is affected by crude oil, exchange rate, etc.) |
| Construction | Ready-mixed Concrete | Standard 25-210-15 | The negotiation price in the metropolitan area (effective from March 1, 2025) |
| Construction | Steel Pile | STP 275_F508x12t | 2025 price calculation criteria updated.<br> - Pre-2025 standards: SPIRAL, 609.6, 12T, STP275, KS F 4602, STEEL PILE |
| Construction | Steel Reinforcement | SD400 10mm | Increase the price of raw materials (scrap) |
| Construction | Cable | TFR-3, 0.6/1KV, 2.5SQ, 2C | Increase the price of raw materials (electric copper) |

---

**[Rechargeable Battery Materials]** 

(1) Criteria for Calculation

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Unit Price based on receipt amount

(2) Price Changing Factors

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Refractory raw materials: Price fluctuations and compositional costs of raw materials in China

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Limestone: Raw material price fluctuation is not extreme, and there are slight variations depending on the freight cost

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Energy materials: Price trends are not disclosed considering concerns about information leakage

------

**5. Production and Facilities** 

**A. Production Capacity** 

**[Steel]** 

∎ **POSCO** 

(Unit: Thousand Ton)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **2025** | **2024** | **2023** |
|  Steel | Crude Steel | 39810 | 40461 | 40680 |

---

∎ **POSCO STEELEON** 

(Unit: Thousand Ton)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **Plant** | **2025** | **2024** | **2023** |
|  Steel | Galvanized / Color-coated Steel | Pohang | 1000 | 1000 | 1000 |
|  Steel | Galvanized / Color-coated Steel | Myanmar | 70 | 70 | 70 |
|  Total | Total | Total | 1070 | 1070 | 1070 |

---

∎ **POSCO M-TECH** 

(Unit: Ton)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **2025** | **2024** | **2023** |
|  Raw materials for steel production | Deoxidizer | 41005 | 39058 | 39294 |

---

**[Infrastructure (Trading)]** 

∎ **POSCO INTERNATIONAL** 

(Unit: MW)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **Products** | **2025** | **2024** | **2023** |
|  Power Generation | Electric Power | Incheon | 3412 | 3412 | 3412 |

---

**[Rechargeable Battery Materials]** 

∎ **POSCO FUTURE M** 

(Unit: Ton)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **Place of Business** | **2025** | **2024** | **2023** |
|  Refractory | Brick and etc. | Pohang | 116560 | 116560 | 116560 |
|  LIME | Quicklime | Pohang | 1095000 | 1095000 | 1095000 |
|  LIME | Quicklime | Gwangyang | 1095000 | 1095000 | 1095000 |
|  Total | Total | Total | 2306560 | 2306560 | 2306560 |

---

**\*** In the case of the rechargeable battery materials sector, detailed notation is omitted in consideration of technology and information leakage concerns. 

**\*** As the Hwaseong Plant is operated under a simple consignment arrangement for POSCO facilities, the information is omitted. 

------

**B. Production Result and Capacity Utilization Rate** 

**[Steel]** 

(1) Production

(Unit: Thousand Ton)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Products** | **Products** | **2025** | **2024** | **2023** |
|  Crude Steel | Crude Steel | 38643 | 39281 | 39941 |
|  Products | Hot-Rolled Steel | 10724 | 10172 | 10660 |
|  Products | Plate | 6365 | 6636 | 6602 |
|  Products | Wire Rod | 1594 | 2131 | 2325 |
|  Products | Pickled-Oiled Steel | 2725 | 2713 | 2780 |
|  Products | Cold-Rolled Products | 7365 | 7498 | 7133 |
|  Products | Coated Steel | 7164 | 7543 | 7299 |
|  Products | Electrical Steel | 1084 | 998 | 828 |
|  Products | Stainless Steel | 3098 | 3333 | 3104 |
|  Products | Others | 1525 | 1698 | 1795 |
|  Products |  |  |  |  |
|  | Total | 41644 | 42720 | 42528 |

---

\* The amount of products is the aggregate amount of POSCO's production and production of POSCO's subsidiaries, 

which may include interested parties' transactions.

(2) Capacity Utilization Rate (2025)

(Unit: Thousand Ton)

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Company** | **Capacity** | **Production** | **Utilization Rate** |
|  Crude Steel<br> Production | POSCO | 39810 | 34537 | 86.8% |
|  Crude Steel<br> Production | PT. Krakatau POSCO | 2952 | 2934 | 99.4% |
|  Crude Steel<br> Production | POSCO (Zhangjiagang) Stainless<br> Steel Co., Ltd. | 1100 | 722 | 65.7% |
|  Crude Steel<br> Production | POSCO Yamato Vina Steel Joint Stock Company | 550 | 450 | 81.8% |
|  Total | Total | 44412 | 38643 | 87.0% |

---

**[Infrastructure (Trading)]** 

Due to the nature of the business, it is difficult to measure production performance and operating rates for Infrastructure (Construction), and Infrastructure (Logistics and associated businesses) segments, therefore, the information is omitted in this part.

------

∎ **POSCO INTERNATIONAL** 

(1) Production Result

(Unit: GWh)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **Place of Business** | **2025** | **2024** | **2023** |
|  Power Generation | Electric Power | Incheon | 10529 | 12193 | 11213 |

---

(2) Capacity Utilization Rate (2025)

(Unit: Hour, %)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Business Area** | **Production Base** | **Capacity** | **Production** | **Utilization Rate** |
|  Power Generation | Incheon Power Plant | 8760 | 5004 | 57.13% |

---

**[Rechargeable Battery Materials]** 

∎ **POSCO FUTURE M** 

(1) Production Result

(Unit: Ton)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business Area** | **Products** | **Place of Business** | **2025** | **2023** | **2022** |
|  Refractory | Brick and etc. | Pohang | 79417 | 80191 | 77437 |
|  LIME | Quicklime | Pohang | 1088517 | 1055911 | 1110594 |
|  LIME | Quicklime | **Gwangyang** | 1187103 | 1216072 | 1243040 |
|  Total | Total | Total | 2355037 | 2352174 | 2431071 |

---

**\*** In the case of the rechargeable battery materials sector, detailed notation is omitted in consideration of technology and information leakage concerns. 

**\*** As the Hwaseong Plant is operated under a simple consignment arrangement for POSCO facilities, the information is omitted. 

(2) Capacity Utilization Rate (2025)

(Unit: Ton)

---

| | | | |
|:---|:---|:---|:---|
| **Business Area** | **Capacity** | **Production** | **Utilization Rate** |
|  Refractory Factory | 116560 | 79417 | 68% |
|  Quicklime Factory (Pohang) | 1095000 | 1088517 | 99% |
|  Quicklime Factory (Gwangyang) | 1095000 | 1187103 | 92% |
|  Total | 2306560 | 2355037 |  |

---

**\*** In the case of the rechargeable battery materials sector, detailed notation is omitted in consideration of technology and information leakage concerns. 

**\*** As the Hwaseong Plant is operated under a simple consignment arrangement for POSCO facilities, the information is omitted. 

------

**C. Production Facilities** 

(1) The current status of production facilities (2025)

**[Land]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance** | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 1957023 | 47378 | -28 |  | 2004373 |
|  Infrastructure | Trading | 514978 | 262927 | -13 | -1364 | 776528 |
|  Infrastructure | Construction | 348243 | 205 | -13667 |  | 334781 |
|  Infrastructure | Logistics and etc. | 111653 | 505 | -52603 |  | 59555 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 217586 | 31076 | -2 |  | 248660 |
|  Others | Others | 186392 | 78266 | -2169 |  | 262489 |

---

**[Buildings]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance** | **Increased** | **Decreased** | **Depreciation** | **Ending<br>Book<br>Balance** |
|  Steel | Steel | 3002051 | 659777 | -67589 | -290983 | 3303256 |
|  Infrastructure | Trading | 574270 | 196465 | -114597 | -28340 | 627798 |
|  Infrastructure | Construction | 85969 | 5716 | -6168 | -7227 | 78290 |
|  Infrastructure | Logistics and etc. | 104483 | 23306 | -8594 | -5832 | 113363 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 1397132 | 231431 | -1136 | -70877 | 1556550 |
|  Others | Others | 117063 | 1604 | -3949 | -135 | 114583 |

---

**[Structures]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance** | **Increased** | **Decreased** | **Depreciation** | **Ending<br>Book<br>Balance** |
|  Steel | Steel | 2796242 | 254731 | -17271 | -259953 | 2773749 |
|  Infrastructure | Trading | 601835 | 571262 | -111568 | -42308 | 1019221 |
|  Infrastructure | Construction | 47043 | 697 | -3207 | -6741 | 37792 |
|  Infrastructure | Logistics and etc. | 88603 | 4794 | -4778 | -7573 | 81046 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 312117 | 81386 | -15581 | -13339 | 364583 |
|  Others | Others | 14683 | 141 | -478 | -364 | 13982 |

---

------

**[Machinery]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance**  | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 14544016 | 2558319 | -427110 | -2238130 | 14437095 |
|  Infrastructure | Trading | 1163227 | 380237 | -338515 | -123864 | 1081085 |
|  Infrastructure | Construction | 6921 | 741 | -1328 | -1576 | 4758 |
|  Infrastructure | Logistics and etc. | 239947 | 1752 | -9142 | -29929 | 202628 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 2336689 | 478079 | -123302 | -235190 | 2456276 |
|  Others | Others | 20878 | 9923 | -3450 | -3866 | 23485 |

---

**[Vehicles]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance**  | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 56788 | 40237 | -10673 | -30546 | 55806 |
|  Infrastructure | Trading | 12534 | 93872 | -70530 | -5069 | 30807 |
|  Infrastructure | Construction | 5655 | 1290 | -904 | -1826 | 4215 |
|  Infrastructure | Logistics and etc. | 989 | 1966 | -2406 | -175 | 374 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 13963 | 646 | -905 | -4322 | 9382 |
|  Others | Others | 46 | 175 | -1 | -189 | 31 |

---

**[Tools and Fixtures]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance**  | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 67074 | 37854 | -16748 | -26312 | 61868 |
|  Infrastructure | Trading | 22310 | 16160 | -5943 | -10844 | 21683 |
|  Infrastructure | Construction | 1432 | 1651 | -946 | -701 | 1436 |
|  Infrastructure | Logistics and etc. | 6328 | 2801 | -1323 | -2239 | 5567 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 37326 | 12960 | -8857 | -13759 | 27670 |
|  Others | Others | 31 | 2 |  |  | 33 |

---

**[Equipment]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance**  | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 100089 | 85693 | -20312 | -51216 | 114254 |
|  Infrastructure | Trading | 24966 | 41109 | -26074 | -11093 | 28908 |
|  Infrastructure | Construction | 8457 | 6638 | -5783 | -3573 | 5739 |
|  Infrastructure | Logistics and etc. | 12137 | 10593 | -6492 | -2949 | 13289 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 40920 | 10176 | -3374 | -8929 | 38793 |
|  Others | Others | 13464 | 7679 | -1099 | -1859 | 18185 |

---

------

**[Financial Lease Assets]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance** | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 184110 | 44654 | -58908 | -62313 | 107543 |
|  Infrastructure | Trading | 375702 | 642034 | -133598 | -67310 | 816828 |
|  Infrastructure | Construction | 29826 | 147183 | -81660 | -36486 | 58863 |
|  Infrastructure | Logistics and etc. | 258550 | 23371 | -3895 | -8599 | 269427 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 102998 | 24771 | -398 | -23614 | 103757 |
|  Others | Others | 19448 | 17197 | -14390 | -4346 | 17909 |

---

**[Biological Assets]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance** | **Increased** | **Decreased** | **Depreciation** | **Ending<br>Book Balance** |
|  Steel | Steel |  |  |  |  |  |
|  Infrastructure | Trading | 139451 | 515745 | -281096 | -11229 | 362871 |
|  Infrastructure | Construction |  |  |  |  |  |
|  Infrastructure | Logistics and etc. |  |  |  |  |  |
|  Rechargeable Battery Materials | Rechargeable Battery Materials |  |  |  |  |  |
|  Others | Others |  |  |  |  |  |

---

**[Assets under Construction]** 

(Unit: KRW million)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Business Segment** | **Business Segment** | **Beginning<br>Book Balance** | **Increased** | **Decreased** | **Depreciation** | **Ending Book<br>Balance** |
|  Steel | Steel | 2250595 | 2533122 | -2987259 |  | 1796458 |
|  Infrastructure | Trading | 573964 | 1017166 | -610399 | -25321 | 955410 |
|  Infrastructure | Construction | 11373 | 4954 | -11186 |  | 5141 |
|  Infrastructure | Logistics and etc. | 363080 | 31034 | -345217 |  | 48897 |
|  Rechargeable Battery Materials | Rechargeable Battery Materials | 4031453 | 2032382 | -1212566 | -18854 | 4832415 |
|  Others | Others | 292725 | 254612 | -44002 |  | 503335 |

---

------

(2) New Facility Establishment, Purchase, Etc. (2025)

- Investments under Construction

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;※ The total duration and investment amount of individual projects with investments in excess of KRW
100 billion have been aggregated on a simple sum basis.

**[Steel]** 

(Unit: KRW hundred million)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Date** | **Date** | **Project** | **Total<br> Investment** | **Invested**<br>**Amount** | **Amount to<br>be Invested** |
|  Expansion/ Establishment | October 2020 ~<br> February 2030 | Revamping of Coke Plant 3 at the Pohang Works, etc. | 58856 | 16553 | 42303 |
| **[Infrastructure]**<br> (Unit: KRW hundred million) | **[Infrastructure]**<br> (Unit: KRW hundred million) | **[Infrastructure]**<br> (Unit: KRW hundred million) | **[Infrastructure]**<br> (Unit: KRW hundred million) | **[Infrastructure]**<br> (Unit: KRW hundred million) | **[Infrastructure]**<br> (Unit: KRW hundred million) |
| **Date** | **Date** | **Project** | **Total<br>Investment** | **Invested**<br>**Amount** | **Amount to<br>be Invested** |
|  Expansion/ Establishment | June 2023 ~<br> May 2027 | Gwangyang LNG terminal, etc. | 9935 | 7325 | 2610 |
| <br> **[Rechargeable Battery Materials]**<br> (Unit: KRW hundred million) | <br> **[Rechargeable Battery Materials]**<br> (Unit: KRW hundred million) | <br> **[Rechargeable Battery Materials]**<br> (Unit: KRW hundred million) | <br> **[Rechargeable Battery Materials]**<br> (Unit: KRW hundred million) | <br> **[Rechargeable Battery Materials]**<br> (Unit: KRW hundred million) | <br> **[Rechargeable Battery Materials]**<br> (Unit: KRW hundred million) |
| **Date** | **Date** | **Project** | **Total<br>Investment** | **Invested**<br>**Amount** | **Amount to<br>be Invested** |
|  Expansion/ Establishment | March 2020 ~<br> July 2027 | Cathode/Anode material factory, lithium commercialization plant, etc. | 73882 | 52075 | 21807 |

---

**6. Product Sales** 

**[Steel]** 

(Unit: KRW hundred million)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Items** | **Items** | **2025** | **2024** | **2023** |
|  Domestic | Hot-Rolled Products | 50136 | 52703 | 58730 |
|  Domestic | Cold-Rolled Products | 45883 | 51263 | 52754 |
|  Domestic | Stainless Steel | 26422 | 29493 | 30313 |
|  Domestic | Others | 91676 | 95180 | 106558 |
|  Overseas | Hot-Rolled Products | 72135 | 72818 | 75979 |
|  Overseas | Cold-Rolled Products | 144832 | 152461 | 142160 |
|  Overseas | Stainless Steel | 71055 | 75395 | 76521 |
|  Overseas | Others | 91993 | 92696 | 92373 |
|  Total | Gross Sum | 594132 | 622009 | 635387 |
|  Total | Internal Transaction | -221283 | -230968 | -231454 |
|  Total | Total | 372849 | 391041 | 403933 |

---

------

**[Infrastructure]** 

(Unit: KRW hundred million)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Business**<br> **Area** | **Items** | **Items** | **2025** | **2024** | **2023** |
|  Trading | Domestic<br> Trading | Merchandise | 34233 | 45670 | 54327 |
|  Trading | Domestic<br> Trading | Product | 27683 | 32545 | 39121 |
|  Trading | Domestic<br> Trading | Others | 846 | 1412 | 1366 |
|  Trading | Overseas<br> Trading | Merchandise | 116886 | 118643 | 121136 |
|  Trading | Overseas<br> Trading | Product | 1132 | 3881 | 3375 |
|  Trading | Overseas<br> Trading | Others | 243 | 144 | 48 |
|  Trading | Trades among the 3 countries | Trades among the 3 countries | 240748 | 226736 | 210065 |
|  Construction | Domestic<br> Construction | Building | 42872 | 49469 | 41251 |
|  Construction | Domestic<br> Construction | Plant | 20378 | 31427 | 35029 |
|  Construction | Domestic<br> Construction | Others | 1807 | 2724 | 2096 |
|  Construction | Overseas | Overseas | 3905 | 8777 | 14975 |
|  Construction | Own Construction | Own Construction | 6239 | 5899 | 9325 |
|  Logistics and etc. | Others | Others | 33063 | 41393 | 39458 |
|  Total | Gross Sum | Gross Sum | 530035 | 568720 | 571572 |
|  Total | Deduction of Internal Transaction | Deduction of Internal Transaction | -233353 | -261735 | -243520 |
|  | Total | Total | 296682 | 306985 | 328052 |

---

**[Rechargeable Battery Materials]** 

(Unit: KRW hundred million)

---

| | | | |
|:---|:---|:---|:---|
| **Items** | **2025** | **2024** | **2023** |
|  Gross Sum | 33384 | 38299 | 48219 |
|  Deduction of Internal Transaction | -12421 | -10174 | -10059 |
|  Total | 20963 | 28125 | 38160 |

---

------

**[Others]** 

(Unit: KRW hundred million)

---

| | | | |
|:---|:---|:---|:---|
| **Items** | **2025** | **2024** | **2023** |
|  Gross Sum | 15000 | 21112 | 15622 |
|  Deduction of Internal Transaction | -14545 | -20381 | -14495 |
|  Total | 455 | 730 | 1127 |

---

**\*** Domestic and overseas categorized by the sales area. **\*** Sales of POSCO INTERNATIONAL's foreign branches are included in 'trade among the 3 countries' under Infrastructure (Trading) Segment. 

\* POSCO E&C underwent organizational restructuring in December 2025; therefore the performance of 'Civil Engineering (Domestic)' sector has been consolidated into 'Plant (Domestic)' sector.

**7. Derivatives** 

POSCO HOLDINGS has agreed to currency swap contracts to hedge against exchange rate risks on foreign currency borrowings. As of December 31, 2025, the Company had currency swap contracts of USD 400 million (due to mature in May 2030) and USD 300 million (due to mature in May 2035), which were measured at fair value. The valuation loss on these currency swaps, as reflected in the Company's financial statements as of December 31, 2025, amounted to KRW 77,751 million.

**8. Significant Contracts** 

**[Steel]** 

(1) Transfer contract of steel business related shares or investment certificates of POSCO HOLDINGS (2024)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Contract Counterparty: POSCO

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Transaction amount: KRW 0.6588 trillion

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Purpose: In order to improve the management efficiency of the steel business as a following step of the
vertical spin-off on March 2022.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Contract execution: December 2024

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e) Payment method: Cash payment

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;f) Company subject to transfer: POSCO Maharashtra Steel Private Limited, POSCO India Processing Center Private
Limited, POSCO India Pune Processing Center Private Limited, POSCO ASSAN TST STEEL INDUSTRY Inc

(2) Transfer contract of steel business related shares or investment certificates of POSCO HOLDINGS (2023)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Contract Counterparty: POSCO

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Transaction amount: KRW 1.1320 trillion

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Purpose: In order to improve the management efficiency of the steel business as a following step of the
vertical spin-off on March 2022.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Contract execution: August 18, 2023 ~ September 25, 2023

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e) Payment method: Cash payment

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;f) Company subject to transfer: PT.KP, P-Mexico, P-IJPC, P-MVWPC (4 overseas companies)

\* The transaction amount above applies the exchange rate as of July 31, 2023, and overseas assets are traded by applying the exchange rate on the day of the transaction. 

(3) Transfer contract of steel business related shares or investment certificates of POSCO HOLDINGS (2022)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Contract Counterparty: POSCO

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Transaction amount: KRW 1.1377 trillion

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Purpose: In order to improve the management efficiency of the steel business as a following step of the
vertical spin-off on March 2022.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Contract execution: November 18, 2022 ~ March 31, 2023

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e) Payment method: Cash payment

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;f) Company subject to transfer: POSCO YAMATO VINA STEEL JOINT STOCK COMPANY, POSCO Thainox Public Company Limited,
POSCO COATED STEEL (THAILAND) CO., and etc. (32 domestic companies, 25 overseas companies)

\* The transaction amount above applies the exchange rate as of November 3, 2022, and overseas assets are traded by applying the exchange rate on the day of the transaction. 

(4) Sales contract of CSP shares

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Contract Counterparty: ArcelorMittal Brazil

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Purpose: Improving asset efficiency through the sales of non-core assets with no management right

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Contract execution: July 28, 2022 (transaction completed on March 10, 2023)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Transaction amount and payment method: ArcelorMittal Brazil acquired shares in shareholder companies free of
charge on the condition that ArcelorMittal Brazil succeed CSP's debts. In addition, the shareholder companies will additionally pay US$102 million.

\* POSCO HOLDNGS paid US$20.4 million, equivalent to a 20 percent stake. 

(5) Equity investment agreement for lithium in LithiumCo (tentative)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Contract Counterparty: LithiumCo (tentative)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Transaction amount: KRW 1.1121 trillion

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Purpose: Investment in prominent assets to enhance cost-competitiveness of the lithium business

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Contract execution: November 11, 2025 (Board resolution and term sheet signing date)

- The definitive agreement is scheduled to be signed in the first half of 2026, after further negotiation on the detailed terms and conditions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e) Payment method: Cash payment

(6) POSCO's equity investment to build an electric arc furnace steel mill in Louisiana, USA

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Contract Counterparty: POS-Louisiana (tentative)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Transaction amount: USD 582 million (Total contribution)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Purpose: Equity investment to jointly construct an electric arc furnace steel mill in Louisiana, USA

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Contract execution: December 16, 2025 (Board resolution date)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e) Payment method: Cash payment

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**[Infrastructure (Trading)]** 

∎ **POSCO INTERNATIONAL** 

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| |
|:---|
| **Contract** |
| Investment on the 3<sup>rd</sup> stage development of<br> A-1 / A-3 block<br> in Myanmar gas field<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1) Investment amount: KRW 365,786,302,000<br>2) Development period: September 1, 2019 ~ December 31, 2024<br>3) Schedule: Installation Completion of low-pressure gas compression platform and commenced operation in 2024<br>4) Other Information<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Location: North-west offshore, Myanmar<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• This investment is the 3<sup>rd</sup> stage of development, which consists of 3 stages in Myanmar gas field development. The purpose of investment is to maintain current gas production level stably by installing low-pressure gas compression platform.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• In the first quarter of 2021, the design and production of the equipment for this work was started, and it is planned to start operation in 2024. The " (2) Development period" above is the period including the basic design progress period, September 2019 to September 2020.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Participation rate of each company in gas production and offshore pipeline transportation business<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• POSCO INTERNATIONAL Corporation: 51.0%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• ONGC VIDESH (Oil and Natural Gas Corporation Videsh Limited) : 17.0%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• MOGE (Myanmar Oil and Gas Enterprise): 15.0%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• GAIL (India) Limited: 8.5%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• KOGAS (Korea Gas Corporation): 8.5%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Investment size of USD 315,170 thousand, applying the exchange rate on the date of the BOD resolution of 1USD=1,160.60 KRW.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Detailed information and future timeline on this resource development investment is subject to change.<br>※ POSCO INTERNATIONAL disclosure date: September 22, 2020 (Decision on natural resources investment) |

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| | |
|:---|:---|
| **Contract** | **Remarks** |
| Investment on the 4<sup>th</sup> stage development of<br> A-1 / A-3 block<br> in Myanmar gas field | &nbsp;&nbsp;&nbsp;&nbsp; 1) Investment amount: KRW 926,302,200,195<br>2) Development period: July 1, 2024 ~ June 30, 2027<br>3) Future Plan: POSCO INTERNATIONAL plans to drill three additional production wells in two deep-sea fields and one additional production well in a shallow-sea field. Furthermore, it will install processing facilities on subsea pipelines and existing platform.<br>4) Other Information<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Location: North-west offshore, Myanmar<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• This investment is the 4<sup>th</sup> stage of development of the existing Myanmar gas field development. The purpose of investment is to drill three additional production wells in two deep-sea fields and one additional production well in a shallow-sea field and to install processing facilities on subsea pipelines and existing platform.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• With its commencement of development in July 2024, the gas production expected to begin in the third quarter of 2027.<br>• Participation rate of each company in gas production and offshore pipeline transportation business<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• POSCO INTERNATIONAL Corporation: 51.0%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• KOGAS (Korea Gas Corporation): 8.5%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• ONGC VIDESH (Oil and Natural Gas Corporation Videsh Limited) : 17.0%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• MOGE (Myanmar Oil and Gas Enterprise): 15.0%<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• GAIL (India) Limited: 8.5%<br>• Investment size of USD 667 million, applying the exchange rate of June 25, 2024 (1USD=1,387.50 KRW).<br>• Detailed information and future timeline on this resource development investment is subject to change.<br>※ POSCO INTERNATIONAL disclosure date: June 27, 2024 (Decision on natural resources investment) |
| Decision on Merger of POSCO Energy | 1) Purpose: The purpose of the merger is to consolidate the energy business within the group and complete the value chain of the LNG business, thereby strengthening competitiveness, improving management efficiency and laying the foundation for sustainable growth.<br>2) Method of Merger: POSCO Energy Co., Ltd. ("POSCO Energy") will be merged with and into POSCO INTERNATIONAL Co., Ltd. ("POSCO INTERNATIONAL").<br>3) Date of board resolution (decision Date): August 12, 2022<br>4) Date of General Shareholders Meeting for merger approval: November 4, 2022<br>5) Merger ratio: POSCO INTERNATIONAL: POSCO Energy = 1 : 1.1626920<br>6) Record date of merger: January 1, 2023<br>7) Scheduled date of merger registration: January 2, 2023<br>※ POSCO INTERNATIONAL disclosure date: January 2, 2023 |

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**9. Research and Development** 

**A. Research and Development ("R&D") Organization (2025)** 

---

| | | |
|:---|:---|:---|
| **Business**<br> **Segment** | **Company** | **Organization** |
| Steel | POSCO | Technology Strategy Office |
| Steel | POSCO | Technical Research Laboratories |
| Steel | POSCO | Technical Research Laboratories<br> Future Steel R&D Center |
| Steel | POSCO | Technical Research Laboratories<br> Steel Manufacturing Process DX R&D Center |
| Steel | POSCO | Steel Product R&D Center |
| Steel | POSCO | Solution R&D Center |
| Steel | POSCO | Oxygen Top and Bottom Blown Converter Project Task Force Team |
| Steel | POSCO | GO Project Team |
| Steel | POSCO | Energy Steel Plate Project Team |
| Steel | POSCO | GigaSteel Project Team |
| Steel | POSCO | Hyper Non-Oriented Electrical Steel Project Team |
| Steel | POSCO (Zhangjiagang) Stainless Steel Co., Ltd.<br>| R&D Center<br>|
| Steel | POSCO STEELEON | Sales and Production Coordination Department<br>|
| Steel | POSCO M-TECH | Automation R&D Center |
| Steel | POSCO M-TECH | Pohang Steel Business Office |
| Steel | POSCO ZT AIR SOLUTION | R&D Department |
| Infrastructure | POSCO MOBILITY SOLUTION | STS Division Production Group |
| Infrastructure | POSCO MOBILITY SOLUTION | Core Division Development Group |
| Infrastructure | PT. Prime Agri Resources | Research & Development |
| Infrastructure | POSCO Eco & Challenge | Research & Development Center |
| Infrastructure | POSCO A&C | Architecture Design Business Office |
| Infrastructure | POSCO DX | AX Convergence Research Laboratory |
| Rechargeable Battery Materials | POSCO Future M | Technical Research Laboratories |
| Others | POSCO HOLDINGS INC. | POSCO Group Technology Strategy Office |
| Others | POSCO HOLDINGS INC. | AI & Robotics Convergence R&D Laboratories |
| Others | POSCO HOLDINGS INC. | Energy Materials R&D Laboratories |
| Others | POSCO HOLDINGS INC. | Hydrogen & Low-Carbon R&D Laboratories |
| Others | POSCO HOLDINGS INC. | Australia Critical Minerals R&D Laboratories |
| Others | POSCO HOLDINGS INC. | POSCO N.EX.T Hub |

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**B. R&D Expenses (2025)** 

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | (Unit: KRW million) | (Unit: KRW million) | (Unit: KRW million) | (Unit: KRW million) | (Unit: KRW million) | (Unit: KRW million) | (Unit: KRW million) |
| **Category** | **Business Segment** | **Business Segment** | **Business Segment** | **Business Segment** | **Business Segment** | **Business Segment** | **Business Segment** |
| **Category** | **Steel** | **Infrastructure** | **Infrastructure** | **Infrastructure** | **Rechargeable<br>Battery<br>Materials** | **Others** | **Total** |
| **Category** | **Steel** | **Trading** | **Construction** | **Logistics<br>and<br>etc.** | **Rechargeable<br>Battery<br>Materials** | **Others** | **Total** |
|  Selling and<br>Administrative Cost | 26541 | 3043 | 5764 | 10454 | 35932 | 116512 | 198246 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Manufacturing Cost | 328775 | 113 | 3015 |  | 7 |  | 331910 |
|  R&D Cost<br>(Intangible Assets) | 146334 |  | 613 | 1029 | 2210 | 3575 | 153761 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total\* | 501650 | 3156 | 9392 | 11483 | 38149 | 120087 | 683917 |
|  Government Subsidy |  |  | 2991 |  |  |  | 2991 |
|  R&D/Sales Ratio (%) | 1.35% | 0.01% | 0.17% | 3.72% | 1.82% | 264.03% | 0.99% |

---

\* Total includes government subsidy. 

------

**III. Financial Statements** 

**1. Consolidated Financial Statements** 

**A. Summary** 

(Unit: KRW million)

---

| | | | |
|:---|:---|:---|:---|
| **Account** | **2025** | **2024** | **2023** |
|  | **As of December 31, 2025** | **As of December 31, 2024** | **As of December 31, 2023** |
|  [Total current assets] | 43483869 | 44029923 | 46212299 |
|  Cash and cash equivalents | 7049800 | 6767898 | 6670879 |
|  Other receivables, net | 1920685 | 2261323 | 1947529 |
|  Other short-term financial assets | 8778584 | 8499389 | 11403166 |
|  Trade accounts and notes receivable, net | 11197974 | 10821619 | 11015303 |
|  Inventories | 13624433 | 14143500 | 13825514 |
|  Other current assets | 912393 | 1536194 | 1349908 |
|  [Total non-current assets] | 61708569 | 59374276 | 54733095 |
|  Other receivables, net | 1635253 | 1306329 | 1452445 |
|  Other long-term financial assets | 3060842 | 2571651 | 2708325 |
|  Investments in associates and joint ventures | 4980153 | 4738793 | 5020264 |
|  Property, plant and equipment, net | 42292820 | 39846828 | 35206248 |
|  Intangible assets, net | 5493529 | 4774824 | 4714784 |
|  Other non-current assets | 4245972 | 6135851 | 5631029 |
|  Total assets | 105192438 | 103404199 | 100945394 |
|  [Total current liabilities] | 23131654 | 22779719 | 21861518 |
|  [Total non-current liabilities] | 19683093 | 19174112 | 19419979 |
|  Total liabilities | 42814747 | 41953831 | 41281497 |
|  [Equity attributable to owners of the controlling company] | 55730185 | 55394231 | 54180849 |

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---

| | | | |
|:---|:---|:---|:---|
|  Share capital | 482403 | 482403 | 482403 |
|  Capital surplus | 1685116 | 1648894 | 1663334 |
|  Hybrid bonds |  |  |  |
|  Retained earnings | 53177472 | 53658368 | 53857514 |
|  Other equity attributable to owners of the controlling company | 385194 | (395434) | (1822402) |
|  [Non-controlling Interests] | 6647506 | 6056137 | 5483048 |
|  Total equity | 62377691 | 61450368 | 59663897 |
|  | From January 1, 2025<br> to December 31, 2025 | From January 1, 2024<br> to December 31, 2024 | From January 1, 2023<br> to December 31, 2023 |
|  Revenue | 69094886 | 72688143 | 77127197 |
|  Operating profit | 1827063 | 2173573 | 3531423 |
|  Profit | 504403 | 947580 | 1845850 |
|  [Profit attributable to owners of the controlling company] | 657654 | 1094917 | 1698092 |
|  [Profit attributable to non-controlling interests] | (153251) | (147337) | 147758 |
|  Total comprehensive Income | 923026 | 2110358 | 2330891 |
|  [Total comprehensive income attributable to owners of the controlling company] | 1032628 | 2008919 | 2131737 |
|  [Total comprehensive income attributable to non-controlling interests] | (109602) | 101439 | 199154 |
|  Earnings per share(KRW) | 8697 | 14451 | 22382 |
|  Number of Consolidated Companies | 199 | 194 | 192 |

---

**B. The Standards Used for Reporting the Financial Statements** 

The Company prepared its financial statements in accordance with the Korean-International Financial Reporting Standards (the "K-IFRS") and applied it to each Company's final financial statements.

------

**2. Separate Financial Statements** 

**A. Summary** 

(Unit: KRW million)

---

| | | | |
|:---|:---|:---|:---|
| **Account** | **2025** | **2024** | **2023** |
|  | **As of December 31, 2025** | **As of December 31, 2024** | **As of December 31, 2023** |
|  [Total current assets] | 3945123 | 3793469 | 4657899 |
|  Cash and Cash equivalents | 184416 | 409387 | 376914 |
|  Trade accounts and notes receivable, net | 157668 | 178822 | 238332 |
|  Other receivables, net | 146146 | 21388 | 68821 |
|  Other short-term financial assets | 3454794 | 2686420 | 3940743 |
|  Inventories |  | 467796 |  |
|  Other current assets | 2099 | 29655 | 33089 |
|  [Total non-current assets] | 47870462 | 46840329 | 46988299 |
|  Other receivables, net | 17414 | 14894 | 6955 |
|  Other long-term financial assets | 506736 | 421822 | 1131074 |
|  Investments in Subsidiaries, associates, and joint ventures | 46290252 | 45631965 | 45321370 |
|  Property, plant and equipment, net | 703140 | 415993 | 197787 |
|  Intangible assets, net | 29659 | 21461 | 19341 |
|  Other non-current assets | 323261 | 334194 | 311772 |
|  Total assets | 51815585 | 50633797 | 51646198 |
|  [Total current liabilities] | 245628 | 162831 | 1819670 |
|  [Total non-current Liabilities] | 3631688 | 2281936 | 2326663 |
|  Total liabilities | 3877316 | 2444768 | 4146333 |
|  [Share capital] | 482403 | 482403 | 482403 |
|  [Capital surplus] | 1367990 | 1367990 | 1370557 |
|  [Retained earnings] | 47310066 | 47952144 | 47505885 |
|  [Other equity] | (1222190) | (1613507) | (1858980) |
|  Total equity | 47938269 | 48189030 | 47499865 |

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| | | | |
|:---|:---|:---|:---|
| **Account** | **2025** | **2024** | **2023** |
|  | From January 1, 2025<br> to December 31, 2025 | From January 1, 2024<br> to December 31, 2024 | From January 1, 2023<br> to December 31, 2023 |
|  Revenue | 1403310 | 1997128 | 1454079 |
|  Operating profit | 976825 | 1596420 | 1106629 |
|  Profit | 494878 | 1621282 | 799578 |
|  Earnings per share (KRW) | 6544 | 21398 | 10539 |

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**B. The Standards Used for Reporting the Financial Statements** 

The company prepared its financial statements in accordance with the Korean—International Financial Reporting Standards (the "K-IFRS").

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**IV. CORPORATE GOVERNANCE** 

**1. Overview of Corporate Governance** 

**A. Board of Directors** 

(1) Board of Directors (BoD)

The BoD consists of four inside directors (CHANG, In Hwa/ LEE, Ju Tae/ CHUN, Sung Lae/ KIM, Ki Soo) and six outside directors (KWON, Tae-Kyun/ YOO, Young Sook/ YOO, Jin Nyong/ SOHN, Sung Kyu/ KIM, Joongi/ PARK, Sung Wook)

The BoD manages six Special Committees:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) ESG Committee

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Director Candidate Recommendation Committee

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Evaluation and Compensation Committee

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Finance Committee

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;e) Audit Committee and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;f) CEO Candidate Pool Management Committee

(2) Composition of the Special Committees under the BoD and their Functions (as of March 11, 2026)

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| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; **Category** | **Composition** | **Directors** | **Major Functions** |
| &nbsp;&nbsp;&nbsp; ESG<br> Committee | 3 Outside Directors,<br> 1 Inside Director | YOO, Jin Nyong<br> (Chairman)<br> YOO, Young Sook<br> KIM, Joongi<br> CHUN, Sung Lae | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Agenda<br>1. Mattersrelated to the operation of the BoD and the special committees<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Agenda proposals development and establishment of the operating standards of the BoD and the special committees<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Prior deliberation on revision or repeal of the Operational Regulations of the Board of Directors<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Prior deliberation of the composition and operation of the BoD's special committees<br>2. ESG-related implementation monitoring and report publication<br>3. Deliberation and resolution of donations in the amount of KRW 100 million to KRW 1 billion and prior deliberation on donations over KRW 1 billion<br>4. Deliberation and resolution on the following transactions with the largest shareholder of the Company as defined under the Commercial Act and such related party, where the transaction amount is less than KRW 200 billion, and prior deliberation for transactions of KRW 200 billion or more: |

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| | | | |
|:---|:---|:---|:---|
|  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) A single transaction whose amount is equal to or greater than 1/100 of the Company's total assets or total revenue as of the end of the most recent fiscal year.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) A transaction where the aggregate transaction amount with a specific counterparty during the relevant fiscal year, including the relevant transaction, is equal to or greater than 5/100 of the Company's total assets or total revenue as of the end of the most recent fiscal year.<br>5. Internal transactions under Monopoly Regulation and Fair Trade Act (The act of providing or trading funds, securities, or assets with related party as business counterpart or for related party)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Review of internal transaction-related issues and improvement measures<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Prior deliberation on internal transactions (Amount KRW 200 billion or more)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Deliberation and resolution of internal transactions (between KRW 10 billion and KRW 200 billion)<br>6. Appointment of the Fair Trade Compliance Officer.<br>• Reported Items<br>1. Key ESG issues of affiliates<br>2. Matters concerning the execution of internal transactions (between KRW 5 billion and KRW 10 billion)<br>|
| &nbsp;&nbsp;&nbsp;Director Candidate Recommendation Committee | 3 Outside Directors | YOO, Young Sook<br> (Chairman)<br> KWON, Tae—Kyun<br> SOHN, Sung Kyu | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Agenda<br>1. Qualification review of Outside Director candidates and making recommendation to the GMoS<br>2. Preliminary review and qualification review of Inside Director candidates<br>3. Prior deliberation on appointment of members of the special committees<br>4. Prior deliberation of the appointment of Representative Directors other than the Representative Director and CEO<br>5. Operation of the Outside Director Candidate Recommendation Advisory Panel<br>6. Other matters necessary for recommending Outside Director candidates |

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| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; Evaluation and<br> Compensation<br> Committee | 4 Outside Directors | KIM, Joongi<br> (Chairman)<br> KWON, Tae—kyun<br> YOO, Jin Nyong<br> PARK, Sung Wook | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Agenda<br>1. Implementation of the executive performance evaluation and compensation plan<br>2. Prior deliberation on the executive performance evaluation and compensation plan<br>3. Prior deliberation on the remuneration and retirement allowance for Directors<br>|
| &nbsp;&nbsp;&nbsp;Finance Committee | 3 Outside<br> Directors; 1 Inside Director | PARK, Sung Wook<br> (Chairman)<br> YOO, Jin Nyong<br> SOHN, Sung Kyu<br> LEE, Ju Tae | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Agenda<br>1. Policy development to foster sound internal corporate value and finances<br>2. Prior deliberation of filings for litigation or arbitration, or formulation of responses to reconciliation or trial mediation, or any equivalent legal actions in the amount of KRW 100 billion or more<br>3. Regarding investment activities<br>a) Prior deliberation on new investments (KRW 100 billion or more. Investment and capital increase includes borrowings and liabilities that the company assumes)<br>b) Prior deliberation on existing investments (KRW 200 billion or more. Investment and capital increase includes borrowings and liabilities that the company assumes)<br>c) Approval of new investments (more than KRW 50 billion and less than KRW 100 billion. Investment and capital increase includes borrowings and liabilities that the company assumes)<br>d) Approval of existing investments (between KRW 100 billion and KRW 200 billion. Investment and capital increase includes borrowings and liabilities that the company assumes)<br>e) Preliminary deliberation on the acquisition and disposal of tangible and intangible fixed assets and important investment assets (in excess of KRW 200 billion, based on book value per unit of investment assets)<br>4. Deliberation and resolution on bond issuance and important borrowings (including refinancing borrowings exceeding KRW 100 billion)<br>5. Prior deliberation on bond issuance and important borrowings (new long-term borrowings exceeding KRW 100 billion)<br>6. Prior deliberation on the delegation of authority to the CEO for bond issuance exceeding KRW 100 billion, and deliberation of and resolution on the delegation of authority to the CEO for bond issuance of KRW 100 billion or less. (for predetermined amount and type of bonds, and with a maturity pepriod not exceeding one year)<br>7. Deliberation and resolution on offering non-current assets as collateral<br>8. Deliberation of and resolution on the assumption of liabilities, including collateral and guarantees, for invested companies for amounts under KRW 200 billion, and prior deliberation for such assumption of KRW 200 billion or more.<br>|

---

------

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; Audit<br> Committee | 3 Outside Directors | SOHN, Sung Kyu (Chairman)<br> KIM, Joongi<br> PARK, Sung Wook | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Agenda<br>1. Defining the work scope of the committee<br>2. Matters delegated by the BoD or Representative Directors<br>3. Request for Extraordinary GMoS<br>4. Consulting of external experts<br>5. Audit of the legitimacy of management's business execution<br>6. Review of the soundness and validity of the Company's financial activities and the appropriateness of the financial reporting<br>7. Review of the validity of important accounting standards or changes in accounting estimates<br>8. Evaluation of the operation status of the internal accounting management system<br>9. Evaluation of the internal control system<br>10. Agreement on appointment or dismissal of the internal audit department representative<br>11. Contract for appointment, remuneration and non-audit services of independent auditors<br>12. Evaluation of independent auditors' audit activities<br>13. Report internal audit department's annual audit plan and results<br>14. Report on the evaluation results of the Company's ethical compliance<br>15. An independent auditor reports on important facts of the Company's Directors' misconduct or actions in violation of laws or the Articles of Incorporation<br>16. Report that independent auditors have violated the company's accounting standards<br>17. Other items deemed necessary by each committee member<br>|
| &nbsp;&nbsp;&nbsp;CEO Candidate Pool Management Committee | 6 Outside Directors<br> (all) | KWON, Tae-Kyun<br> (Chairman)<br> YOO, Young Sook<br> YOO, Jin Nyong<br> SOHN, Sung Kyu<br> KIM, Joongi<br> PARK, Sung Wook<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Agenda<br>1. Prior deliberation on the basic qualifications of CEO candidates as defined by the Board of Directors<br>2. Pooling results of CEO candidates<br>3. CEO candidate development plans<br>• Reported Items<br>1. Results of the development of the CEO candidate pool |

---

------

(3) List of Key Activities of the Board of Directors

• January 1, 2025 ~ March 19, 2025

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**No.** | **Date** | **Agenda** | **Approval** |  |  |
| &nbsp;&nbsp;&nbsp;1 | February 5 | 1. Medium to Long-term Management Strategies and 2025 Consolidated Management Plans of the Group<br>| Approved |  |  |
| &nbsp;&nbsp;&nbsp;1 | February 5 | <br> 2. Approval of the 57th Financial Statements and schedule for the General Meeting of Shareholders<br>| Approved |  |  |
| &nbsp;&nbsp;&nbsp;1 | February 5 | <br> 3. Funding plans for FY 2025<br>| Approved |  |  |
| &nbsp;&nbsp;&nbsp;1 | February 5 | 4. Amendment of Internal Control over Financial Reporting (ICFR) Regulations | <br> Approved<br> After Amendment<br>|  |  |
| &nbsp;&nbsp;&nbsp;1 | February 5 | 5. Improvement of the Company's performance evaluation system and executive compensation system | <br> Approved<br> After Amendment<br>|  |  |
| &nbsp;&nbsp;&nbsp;1 | February 5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Reported Items<br>- 2024 Group's business performance<br>- Operational status of the 2024 ICFR<br>- Evaluation of the 2024 operation of the ICFR<br>| <br> — <br>— <br>— <br>|  |  |
| &nbsp;&nbsp;&nbsp;2 | February 19 | <br> 1. Recommendation of Inside Directors candidates | Approved |  |  |
| &nbsp;&nbsp;&nbsp;2 | February 19 | <br> 1. Recommendation of Inside Directors candidates | Approved | 2. Partial amendments to the Articles of Incorporation | <br> Approved<br> After Amendment<br>|
| &nbsp;&nbsp;&nbsp;2 | February 19 | <br> 1. Recommendation of Inside Directors candidates | Approved | <br> 3. Agenda items for the 57th Annual General Meeting of Shareholders<br>| Approved |
| &nbsp;&nbsp;&nbsp;2 | February 19 | <br> 1. Recommendation of Inside Directors candidates | Approved | <br> 4. Cancellation of treasury shares and the treasury shares report<br>| Approved |
| &nbsp;&nbsp;&nbsp;2 | February 19 | <br> 1. Recommendation of Inside Directors candidates | Approved | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Item<br>-<br>Items reported at the 1st ESG Committee meeting<br>| **—** <br>|
| &nbsp;&nbsp;&nbsp;2 | February 19 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;2 | February 19 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;2 | February 19 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;2 | February 19 |  |  |  |  |

---

------

• March 20, 2025 ~ December 31, 2025

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**No.** | **Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;3 | March 20 | <br> 1. Appointment of the Chair of the Board<br>| Approved |
| &nbsp;&nbsp;&nbsp;3 | March 20 | <br> 2. Appointment of the Representative Director & CEO<br>| Approved |
| &nbsp;&nbsp;&nbsp;3 | March 20 | <br> 3. Appointment of members to the special committees<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 1. Dividend payment in Q1 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 2. Approval (ex post facto) of restoration fund donation made to wildfire damage in<br>the Yeongnam region<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 3. Plan to extend payment guarantee for NMC borrowings<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 4. Participation in capital increase of POSCO Future M<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 5. Participation in capital increase of POSCO Pilbara Lithium Solution<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 6. Participation in capital increase of POSCO GS Eco-Materials<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | <br> 7. Amendment to the Board of Directors' Operating Regulations<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | May 13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>Business performance of the Group in Q1 2025<br>-<br>Board activity performance and assessment results in 2024<br>| <br> — <br>— <br>|
| &nbsp;&nbsp;&nbsp;5 | July 3 | <br> 1. Sale of equity stakes in Zhangjiagang and Qingdao<br>| Approved |
| &nbsp;&nbsp;&nbsp;6 | August 6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>POSCO Group's Plan for Safety Management Innovation<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>— <br>|
| &nbsp;&nbsp;&nbsp;7 | August 12 | <br> 1. Dividend payment in Q2 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;7 | August 12 | <br> 2. Approval (ex post facto) of restoration fund donation made for damages caused by heavy rainfall nationwide<br>| Approved |
| &nbsp;&nbsp;&nbsp;7 | August 12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>Progress update on 2025 Board resolutions<br>-<br>Group business performance in Q2 2025<br>-<br>Progress update on integrated steel mill project in India<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>— <br>— <br>— <br>|
| &nbsp;&nbsp;&nbsp;8 | November 11 | <br> 1. Dividend payment in Q3 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;8 | November 11 | <br> 2. Equity investment in Australian lithium mines<br>| Approved |
| &nbsp;&nbsp;&nbsp;8 | November 11 | <br> 3. Endowment to establish Occupational Incident Family Care Foundation<br>| Approved |
| &nbsp;&nbsp;&nbsp;8 | November 11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>Group business performance in Q3 2025<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>— <br>|
| &nbsp;&nbsp;&nbsp;9 | December 8 | <br> 1. Medium to Long-term Management Strategies and 2026 Consolidated Management Plans of the Group<br>| Approved |
| &nbsp;&nbsp;&nbsp;9 | December 8 | <br> 2. 2026 Corporate Bond Issuance Limit<br>| Approved |
| &nbsp;&nbsp;&nbsp;9 | December 8 | <br> 3. 2026 Safety and Health Plan<br>| Approved |
| &nbsp;&nbsp;&nbsp;9 | December 8 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>Results of Compliance with the 2025 Compliance Control Standards<br>-<br>Execution Status of 2025 Board Resolutions<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>— <br>— <br>|

---

------

• January 1, 2026 ~ March 11, 2026

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**No.** | **Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp; 1 | February 3 | <br> 1. Approval of the 58th Financial Statements and schedule for the General Meeting of Shareholders<br>| Approved |
| &nbsp;&nbsp;&nbsp; 1 | February 3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>2025 Group's business performance<br>-<br>Operational status of the 2025 ICFR<br>-<br>Evaluation of the 2025 operation of the ICFR<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>— <br>— <br>— <br>|
| &nbsp;&nbsp;&nbsp; 2 | February 19 | <br> 1. Recommendation of Inside Directors and Non-Standing Directors candidates<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 19 | <br> 2. Partial amendments to the Articles of Incorporation<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 19 | <br> 3. Agenda items for the 58th General Meeting of Shareholders<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 19 | <br> 4. Cancellation of treasury shares and the treasury shares report<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 19 | 5. Improvements to Board operations and amendment of relevant rules | <br> Approved<br> After Amendment<br>|
| &nbsp;&nbsp;&nbsp; 2 | February 19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Item<br>-<br>Execution Status of 2025 Board Resolutions<br>| — <br>|

---

(4) Key Activities of Outside Directors

• January 1, 2025 ~ December 31, 2025

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**No.** | **Date** | **Outside Director Attendance**<br> **(Total Outside Directors)** | **Remarks** |
| &nbsp;&nbsp;&nbsp; 1 | February 5 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 2 | February 19 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 3 | March 20 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 4 | May 13 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 5 | July 3 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 6 | August 6 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 7 | August 12 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 8 | November 11 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 9 | December 8 | 6 (6) |  |

---

------

• January 1, 2026 ~ March 11, 2026

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**No.** | **Date** | **Outside Director Attendance**<br> **(Total Outside Directors)** | **Remarks** |
| &nbsp;&nbsp;&nbsp; 1 | February 3 | 6 (6) |  |
| &nbsp;&nbsp;&nbsp; 2 | February 19 | 6 (6) |  |

---

(5) Special Committees under the BoD and their Activities

• ESG Committee (January 1, 2025 ~ March 19, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;February 13 | <br> 1. Contribution to the POSCO Educational Foundation<br>| Approved |
| &nbsp;&nbsp;&nbsp;February 13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Reported Items<br>- Plan to organize a Greenwashing Review Committee<br>- Plan to establish an Internal ESG Control System<br>- Plan to declare POSCO Group's human rights management declaration<br>| <br> — <br>— <br>— <br>|

---

• ESG Committee (March 20, 2025 ~ December 31, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 1. Participation in capital increase of POSCO Future M<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 2. Participation in capital increase of POSCO Pilbara Lithium Solution<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 3. Amendment to the Board of Directors' Operating Regulations<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 4. Plan for the publication of the 2024 Sustainability Report<br>| Approved |
| &nbsp;&nbsp;&nbsp;May 8 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- POSCO Group ESG performance in Q1 2025<br>| — <br>|
| &nbsp;&nbsp;&nbsp;August 6 | <br> 1. Selection of construction contractor and execution of contract for POSCO Global Center Site 3 <sup>1)</sup> <br>| Not approved |
| &nbsp;&nbsp;&nbsp;August 6 | <br> 2. Equity investment in AC Fund for new business development<br>| Approved |
| &nbsp;&nbsp;&nbsp;August 6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- POSCO Group ESG performance in Q2 2025<br>- Operation status of the Fair Trade Compliance Program (CP) in the first half of 2025<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>— <br>— <br>|
| &nbsp;&nbsp;&nbsp;November 5 | <br> 1. Participation in POSCO Argentina capital increase to acquire mining rights<br>| Approved |
| &nbsp;&nbsp;&nbsp;November 5 | <br> 2. Signing of POSCO Global Center Site 3 construction contract<br>| Approved |
| &nbsp;&nbsp;&nbsp;November 5 | <br> 3. Endowment to establish Occupational Incident Family Care Foundation<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;November 5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Reported Items<br>- POSCO Group ESG performance in Q3 2025<br>| <br> — <br>|
| &nbsp;&nbsp;&nbsp; December 4 | <br> 1. 2026 Brand Licensing Contract for "POSCO"<br>| Approved |
| &nbsp;&nbsp;&nbsp; December 4 | <br> 2. 2026 POSCO Center Lease Contract<br>| Approved |
| &nbsp;&nbsp;&nbsp; December 4 | <br> 3. Donation to The Korea Society<br>| Approved |
| &nbsp;&nbsp;&nbsp; December 4 | <br> 4. Year-end donation to the Community Chest<br>| Approved |
| &nbsp;&nbsp;&nbsp; December 4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>Operation status of the Fair Trade Compliance Program (CP) in the second half of 2025<br>|  |

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------

1) Re-deliberation is required after additional review of the appropriateness of contractor selection

• ESG Committee (January 1, 2026 ~ March 11, 2026)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;January 22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>Review of strategies to utilize PT.BIA's carbon emission reductions<br>-<br>Measures to optimize ESG disclosure metrics for subsidiaries<br>| <br> — <br>— <br>|
| &nbsp;&nbsp;&nbsp;February 13 | <br> 1. Improvements to Board operations and amendment of relevant rules<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;February 13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>POSCO group's ESG Management Strategy for 2026<br>-<br>POSCO group's Human Rights Management Strategy for 2026<br>| <br>— <br>—  |

---

• Director Candidate Recommendation and Management Committee (January 1, 2025 ~ March 20, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;January 3 | <br> 1. Qualification assessment of Outside Director candidates<br>| Approved |
| &nbsp;&nbsp;&nbsp; February 19 | <br> 1. Recommendation of the Outside Directors candidates<br>| Approved |
| &nbsp;&nbsp;&nbsp; February 19 | <br> 2. Qualification assessment of the Inside Directors candidates<br>| Deliberated |
| &nbsp;&nbsp;&nbsp; February 19 | <br> 3. Appointment of Special Committee members for FY 2025<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;March 20 | <br> 1. Appointment of Representative Director & CEO<br>| Deliberated |

---

\* Both the Director Candidate Recommendation Committee and the Board of Directors meetings were held on the same date (March 20, 2025).

• Director Candidate Recommendation and Management Committee (March 21, 2025 ~ December 31, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;August 12 | <br> 1. Operation of the advisory panel for recommendation of Outside Director candidates<br>| Approved |
| &nbsp;&nbsp;&nbsp; October 28<br> (Recessed)<br> November 5<br> (Resumed) | 1. Qualification assessment of the Outside Directors candidates | Approved |

---

• Director Candidate Recommendation and Management Committee (January 1, 2026 ~ March 11, 2026)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;February 19 | 1. Recommendation of the Outside Directors candidates | <br> Approved<br>|
| &nbsp;&nbsp;&nbsp;February 19 | <br> 2. Recommendation of the Inside Directors and Non-Standing Directors candidates<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;February 19 | <br> 3. Appointment of Special Committee members for FY 2026<br>| Deliberated |

---

------

• Evaluation and Compensation Committee (January 1, 2025 ~ December 31, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;January 22 | <br> 1. Improvement of the company's performance evaluation system and executive compensation system<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;February 5 | <br> 1. Evaluation of the 2024 business performance<br>| Approved |
| &nbsp;&nbsp;&nbsp;February 19 | <br> 1. Evaluation of the business performance for 2025 and Evaluation plan for the Long-term business performance ('25~'27)<br>| Approved |

---

\* Following constructive debate during the Compensation Committee's deliberation on Jan 22, 2025, the agenda item for 'Improvement to the company's performance evaluation and executive compensation system' was approved with amendments by the Board of Directors on Feb 5, 2025.

• Evaluation and Compensation Committee (January 1, 2026 ~ March 11, 2026)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;February 4 | <br> 1. Evaluation of the 2025 business performance<br>| Approved |

---

• Finance Committee (January 1, 2025 ~ March 19, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;January 23, | <br> 1. Funding plan for FY 2025<br>| Deliberated |

---

• Finance Committee (March 20, 2025 ~ December 31, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 1. Participation in capital increase of POSCO Future M<br>| <br> Deliberated<br>|
| &nbsp;&nbsp;&nbsp;May 8 | <br> 2. Participation in capital increase of POSCO Pilbara Lithium Solution<br>| Deliberated<br>|
| &nbsp;&nbsp;&nbsp;July 2 | <br> 1. Sale of equity stakes in Zhangjiagang and Qingdao<br>| Deliberated |
| &nbsp;&nbsp;&nbsp;August 12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>-<br>2025 Group's business performance outlook and financial risk analysis<br>-<br>Financial effects of the capital increase at the three rechargeable battery materials subsidiaries<br>| — <br>— <br>|
| &nbsp;&nbsp;&nbsp;November 5 | <br> 1. Equity investment in Australian lithium mines<br>| Deliberated |
| &nbsp;&nbsp;&nbsp; December 4 | <br> 1. 2026 Corporate Bond Issuance Limit<br>| Deliberated |

---

------

• CEO Candidate Pool Management Committee (March 20, 2025 ~ December 31, 2025)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 1. Results of pooling for CEO candidates for the first half of 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;May 8 | <br> 2. Measures to strengthen the development of the internal CEO candidates pool<br>| Approved |
| &nbsp;&nbsp;&nbsp; November 27 | <br> 1. Results of pooling for CEO candidates<br>| Approved |

---

**B. Audit Committee** 

(1) Composition of the Audit Committee

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Name** | **Qualifications** | **Remarks** |
| &nbsp;&nbsp;&nbsp; SOHN, Sung Kyu<br> KIM, Joongi<br> PARK, Sung Wook | Satisfies the requirements stipulated in the Korean Commercial Act | Chair<br> — <br> —  |

---

\* SOHN, Sung Kyu is an accounting and financial expert.\* PARK, Sung Wook has been concurrently serving as an Outside Director of SK Hynix NAND Product Solutions Corp. (U.S.) since March 2026.

(2) Major Activities of the Audit Committee

• January 1, 2025 ~ March 19, 2025

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Session** | **Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp; 1 | January 24 | <br> 1. Consent to the appointment of the person in charge of the Internal Audit Department<br>| Approved |
| &nbsp;&nbsp;&nbsp; 1 | January 24 | <br> 2. Approval of audit and non-audit service contract for POSCO Holdings and its subsidiaries<br>| Approved |
| &nbsp;&nbsp;&nbsp; 1 | January 24 | <br> 3. Amendment of the Internal Control over Financial Reporting (ICFR) Regulations<br>| Approved |
| &nbsp;&nbsp;&nbsp; 1 | January 24 | <br> 4. Evaluation of ICFR operations in 2024<br>| Approved |
| &nbsp;&nbsp;&nbsp; 1 | January 24 | <br> 5. Audit Committee activities in 2024<br>| Approved |
| &nbsp;&nbsp;&nbsp; 1 | January 24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- Operational status of the ICFR in 2024<br>| — <br>|
| &nbsp;&nbsp;&nbsp; 2 | February 26  | <br> 1. Internal audit result for 2024<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 26  | <br> 2. Internal audit performance of 2024 and 2025 plan<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 26  | <br> 3. Deliberation of the agenda items for the AGM<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 26  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- External audit result for 2024<br>| <br> — <br>|

---

------

\* At the 57th General Meeting of Shareholders, convened on March 20, 2025, Audit Committee member YOO, Jin Nyong's term expired, and Outside Director KIM, Joongi was elected to serve on the Audit Committee.

• March 20, 2025 ~ December 31, 2025

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Session** | **Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;3 | March 20 | 1. Appointment of the Chair of the Audit Committee | Approved |
| &nbsp;&nbsp;&nbsp;4 | April 24 | <br> 1. Internal audit results for Q1 2025 consolidated financial statements<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | April 24 | <br> 2. Approval of non-audit services for POSCO India PC<br>| Approved |
| &nbsp;&nbsp;&nbsp;4 | April 24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- 20-F audit results for 2024 and external review results for Q1 2025 consolidated financial statements<br>| <br> — <br>|
| &nbsp;&nbsp;&nbsp;5 | August 13 | <br> 1. Approval of contract for non-audit service of the POSCO E&C<br>| Approved |
| &nbsp;&nbsp;&nbsp;5 | August 13 | <br> 2. Internal audit results for Q2 2025 consolidated financial statements<br>| Approved |
| &nbsp;&nbsp;&nbsp;5 | August 13 | <br> 3. Audit activity evaluation results of the external auditor for FY 2024<br>| Approved |
| &nbsp;&nbsp;&nbsp;5 | August 13 | <br> 4. Results of internal audit performance for the 1st half of 2025 and plan for 2nd half of 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;5 | August 13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- Design Assessment Results of the Internal Control over Financial Reporting for FY 2025<br>- Results of external audit on consolidated financial statements for Q2 of 2025<br>| <br> — <br>— <br>|
| &nbsp;&nbsp;&nbsp;6 | October 21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- Overview of ITGC and the Internal Control over Financial Reporting<br>| — <br>|
| &nbsp;&nbsp;&nbsp;7 | November 13 | <br> 1. Approval of audit and non-audit service contract for POSCO HOLDINGS' subsidiaries<br>| Approved |
| &nbsp;&nbsp;&nbsp;7 | November 13 | <br> 2. Internal audit results for Q3 2025 consolidated financial statements<br>| Approved |
| &nbsp;&nbsp;&nbsp;7 | November 13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; • Reported Item<br>- Results of external audit on consolidated financial statements for Q3 of 2025<br>- Assessment results of the framework for new business investments<br>| <br> — <br>— <br>|
| &nbsp;&nbsp;&nbsp;8 | December 8 | <br> 1. Approval of audit service contract for POSCO Holdings and its subsidiaries<br>| Approved |

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• January 1, 2026 ~ March 11, 2026

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| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; **Session** | **Date** | **Agenda** | **Approval** |
| &nbsp;&nbsp;&nbsp;1 | February 2 | <br> 1. Evaluation of ICFR operations in 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;1 | February 2 | <br> 2. Approval of audit and non-audit service contract for POSCO Holdings and its subsidiaries<br>| Approved |
| &nbsp;&nbsp;&nbsp;1 | February 2 | <br> 3. Audit Committee activities in 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp;1 | February 2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- Operational status of the ICFR in 2025 | <br> —  |
| &nbsp;&nbsp;&nbsp; 2 | February 26 | <br> 1. Approval of non-audit service contract for POSCO<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 26 | <br> 2. Internal audit result for 2025<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 26 | <br> 3. Internal audit performance of 2025 and 2026 plan<br>| Approved |
| &nbsp;&nbsp;&nbsp; 2 | February 26 | 4. Deliberation of the agenda items for the AGM | <br> Approved<br>AfterAmendment<br>|
| &nbsp;&nbsp;&nbsp; 2 | February 26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br> • Reported Items<br>- External audit result for 2025 |  |

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**C. Voting Rights of Shareholders** 

(1) The Cumulative Voting System: The cumulative voting system was introduced at the 36th general meeting of
shareholders on March 12, 2004.

(2) The Electronic Voting System: The implementation of electronic voting system was determined at the Board of
Directors meeting on February 20, 2019.

**D. Compensation of Directors and Officers** 

(1) The Salary of Directors and Audit Committee Members

(Unit: KRW million)

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Category** | **No. of**<br> **people** | **Total payment** | **Average payment**<br> **(Per person)** | **Ceiling amount approved** <br> **at the general<br>meeting of**<br> **shareholders** | **Remarks** |
| &nbsp;&nbsp;&nbsp; Inside Director<br> (Excluding Outside Director, Audit Committee Member) | 4 | 5246 | 1338 | 10000 |  |
| &nbsp;&nbsp;&nbsp; Outside Director<br> (Excluding Audit Committee Members) | 3 | 326 | 109 | 10000 |  |
| &nbsp;&nbsp;&nbsp; Audit Committee<br> Members | 3 | 331 | 110 | 10000 |  |

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※ No. of people: The number of Directors and the Audit Committee members who are in office as of
December 31, 2025.

※ Total payment: The total amount of remuneration paid to all Directors, including the Audit Committee members,
who served from January 1 to December 31, 2025. (Including directors who retired before December 31, 2025).

※ Average payment per person: The sum of average payment per director per month in 2025.