POSCO Holdings signs preliminary Cleveland Cliffs pact

The company said it would re-disclose information when specific matters are decided or within one year, with September 29, 2027 listed as the re-disclosure date.

Rhea-AI Filing Summary

POSCO HOLDINGS INC. said it signed an MOU with Cleveland Cliffs as part of its strategy to pursue overseas growth and expand its presence in the high-profit U.S. market. Discussions about the business structure and investment size are underway, but no decisions have been finalized. The company said it would re-disclose information when specific matters are decided or within one year; the stated re-disclosure date is September 29, 2027.

Key Terms

MOU, end-to-end localization strategy, re-disclosure

3 terms

MOU financial

"signed an MOU with Cleveland Cliffs"

A memorandum of understanding (MOU) is a written agreement that outlines the basic terms and shared intentions between parties before a formal contract is drawn up. Think of it as a detailed handshake that signals commitment to work together; for investors it matters because an MOU can indicate a likely future deal, partnership or transaction that could affect a company’s strategy, revenues or risks, even though it often lacks full legal force.

end-to-end localization strategy technical

"a part of the company’s end-to-end localization strategy"

re-disclosure regulatory

"Re-disclosure date"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did PKX disclose about its MOU with Cleveland Cliffs?

POSCO HOLDINGS INC. said it signed an MOU with Cleveland Cliffs. Discussions about the business structure and investment size are underway, but no decisions have been finalized.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/30/2026 - 06:05 AM Accepted by SEC EDGAR 09/30/2026 - 06:05 AM Learn about SEC filing dates

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 September, 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 ☐

Response to Rumors or Media Reports : Undetermined

December 5, 2025		This is a re-disclosure of the announcement released on the stated date,
1. Contents of rumors or media reports				Kim Jae-Chul vies to win the 10 trillion won HMM acquisition battle, which he describes as the crown jewel of his business ambition
2. Channel of rumors or media reports				Maeil Business Newspaper
3. Distributed date of rumors or media reports				December 5, 2025
4. Company’s explanation for rumors or media reports
- This disclosure is an official notice of “Kim Jae-Chul vies to win the 10 trillion won HMM acquisition battle, which he describes as the crown jewel of his business ambition” published by Maeil Business Newspaper on December 5, 2025. - As a part of the company’s end-to-end localization strategy to seek growth overseas and to expand our presence in the high-profit US market, POSCO HOLDINGS has signed an MOU with Cleveland Cliffs. Discussions are underway regarding the business structure and investment size; however, no decisions have been finalized. - In this regard, we will re-disclose the information when specific matters are decided in the future or within one year. (Person in charge of disclosure) Han, Young Ah, Executive Vice President
5. Re-disclosure date				September 29, 2027
Related disclosure				- December 8, 2025 Response to Rumors or Media Reports: Undetermined - January 5, 2026 Response to Rumors or Media Reports: Undetermined - March 31, 2026 Response to Rumors or Media Reports: Undetermined

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.

						POSCO HOLDINGS INC.
						(Registrant)
Date: September 30, 2026				By		/s/ Han, Young Ah
						(Signature)
						Name: Han, Young Ah
						Title: Executive Vice President