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 ☐

~~Adjustment~~Corporate ofValue-up ~~Conversion~~Plan ~~Price,~~(Voluntary ~~Exercise Price of Preemptive Rights, and Exchange Price~~Disclosure)

1. Type		Adjustment of exchange price
※ This disclosure includes future plans and forecasts. The information may change or it may differ from actual results. In addition, the determination of whether the company qualifies as a “high dividend company” under Article 104-27 of the Act on Restriction on Special Cases Concerning Taxation is based on the company’s own assessment.
2. Class of Bonds		Foreign currency denominated exchangeable bonds (Issued September 1, 2021)
1. Name of the plan	2024 POSCO HOLDINGS Corporate Value-up Plan
• Listing of Warrants		Not applicable
2. Major details	1. Overview 2. Value-up Plan • Analysis • Target - Revenue Growth : CAGR 6~8% (~2027) - ROIC : 6~9% (~2027) - Shareholder return : cash dividend and share cancellation • Plan ① Revenue Growth - (Steel) Expand into growth markets and strengthen global competitiveness - (Secondary Battery Materials) Fortify competence by acquiring promising resources and innovating products and technologies - (Infra·New biz) Support the group business growth and expand into new and future materials ② ROIC - Rebalance business portfolio focusing on steel, secondary battery materials and new business - Restructure underperforming and non-core businesses/assets ③ Shareholder return - Share Cancellation of 6% over 3 years (2024~2026) - Immediate share cancellation upon new share buyback going forward - 50~60% of annual FCF (parent base) will be used to pay base dividend (KRW 10,000/share), and the remaining shall be additionally returned
3. Details of Adjustment	Series No.	Pre-adjustment price (KRW)	Post-adjustment price (KRW)
	-	425,631	419,025
4. Changes in Securities	Series No.	Total par value (electronic registration) of non-exercised securities (KRW)	Number of shares available for conversion, exercise, and exchange before adjustment (shares)	Number of shares available for conversion, exercise, and exchange after adjustment (shares)
	-	36,864,672,000	86,611	89,389
5. Reasons for Adjustment		Adjustment of exchange price following cash dividend of POSCO HOLDINGS INC.
6. Basis and Method for Adjustment		1) Grounds for adjustment: Adjustment of the exchange price following cash dividends • In the event of any reasons for adjustment of the exchange price, such as capital increase without consideration, stock split, reverse stock split, change of stock class, issuance of options or warrants to shareholders, stock dividends, cash dividends, issuance of new shares below market price, etc., the exchange price will be adjusted according to the relevant bond conditions. 2) Method of adjustment Post adjustment adjusted price = Pre adjustment adjusted price x [(Current market price - Cash dividends equivalent to 1 share)/Current market price]
7. Effective Date of Adjusted Price		February 28, 2026

8. Date of Board Resolution (Decision Date)		-
	3. Governance • Improvement in CEO and outside director appointment process with board-led governance • Establish group-wide ESG risk response system at the POSCO holdings board level. 4. Communication
• Attendance of Outside Directors	Present (No.)	-
3. High dividend company under Article 104-27 of the Act on Restriction on Special Cases Concerning Taxation	Yes
	Absent (No.)	-
	Dividend income for the business year in which December 31, 2024 falls (KRW)	757,484,930,000
• Attendance of Auditors (members of Audit Committee)		-
	Dividend payout ratio for the immediately preceding business year (2025) (%)	115.0
9. Other references useful for making investment decisions		• ‘Total par value (electronic registration) of non-exercised securities (KRW)‘of ‘4. Changes in Securities’ above was converted into KRW by applying the standard exchange rate (standard exchange rate of 1,360.32 EUR/KRW announced by Seoul Foreign Exchange Brokerage Co., Ltd. on August 13, 2021). • ‘Current market price’ of ‘6.2 Method adjustment’ above means the amount obtained by taking an arithmetic average of the closing prices of 20 trading days until the immediately preceding trading day, including the immediately preceding trading day of the date started, with the trading day immediately preceding the date of disclosure of the initial dividend being the date started. • Above ‘7. Effective Date of Adjusted Price’ will take effect on February 28, 2026 which is immediately after the record date for the 4th quarter 2025 (February 27, 2026).
	Amount of dividends for the immediately preceding business year (2025) (KRW)	756,207,790,000
	Amount of dividends for the business year prior to the immediately preceding business year (2024) (KRW)	757,484,930,000
	Growth rate of total dividends for the immediately preceding business year compared to the business year prior to the immediately preceding business year (%)	-0.17
4. Date of decision	2026-03-24
5. Related references	Uploaded date	2024-12-23
	Website URL	http://www.posco-inc.com/
6. Other important details to be considered for investment decisions	1. Because we qualify as a high-dividend company that disclosed its corporate value-up plan prior to the date on which Article 104-24 of the Enforcement Decree of the Act on Restriction of Special Taxation became effective, we hereby redisclose “2024 POSCO Holdings Corporate Value-up Plan,” previously filed on December 23, 2024. Additionally, the implementation evaluation for the corporate value-up plan will be disclosed in the latter half of this year.” 2. Item 3 pertains to the qualification of high-dividend company as defined by Article 104-27 of the Act on Restriction of Special Taxation. Based on the interpretation of the statute by relevant authorities, “immediate preceding business year” that appears in Paragraph 1 Subparagraph 2 of the Article refers to the business year immediately preceding the most recent business year. By this definition, we provide that the Company’s dividend income in the immediate preceding business year (2024) did not decrease against the base year (2024). Therefore, the Company qualifies as a high-dividend company.



		3. The dividend per share for 2024 and 2025 remains unchanged at KRW 10,000. However, the amount of dividend for 2025 is lower than that of 2024, due to a reduction in the number of outstanding shares (a decrease of 255,428 shares) following the acquisition and subsequent cancellation of treasury shares in August 2024. 4. Item “4. Date of Decision” refers to the date of the Annual General Shareholders’ Meeting. 5. For more details, please refer to the attached “2024 POSCO Holdings Corporate Value-up Plan”. 6. This disclosure material includes plans and forecast information, and it may be subject to change depending on future market conditions and changes in the business environment.
		※ Related disclosure		2024-12-23 Corporate Value-up Plan (Voluntary Disclosure)

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:	March 24, 2026	By	/s/ Han, Young Ah
Date: March 25, 2026		By	/s/ Han, Young Ah
			(Signature)
			Name: Han, Young Ah
			Title: Executive Vice President

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