[6-K] SK Telecom Co., Ltd. American Current Report (Foreign Issuer)

Rhea-AI Filing Summary

SK Telecom (NYSE:SKM) submitted a Form 6-K dated 28 June 2025 to advise investors that its integrated sustainability document, the “SK Telecom Annual Report 2024”, is now available on the company’s website and was formally approved by the board in June 2025.

The report—certified by the British Standards Institution—was prepared under the IIRC <IR> Framework and the comprehensive GRI Standards. It covers the period 1 January 2024 to 31 December 2024, with select qualitative updates through May 2025, and presents three years of consolidated financial data prepared under K-IFRS as well as extensive non-financial and ESG disclosures. Scope is limited to operations in the Republic of Korea, which generate more than 99 % of revenue. An English-language version is scheduled to be posted on the website by July 2025.

No new financial results, strategic transactions or risk factors were disclosed; the filing serves solely as notification of the report’s publication.

Insights

ESG Specialist

TL;DR – Disclosure of 2024 ESG report; no material financial information, neutral for valuation.

This 6-K merely confirms publication of SK Telecom’s 2024 integrated sustainability report. While the document aligns with recognised frameworks (IIRC, GRI) and carries third-party assurance from BSI, the filing introduces no incremental financial metrics, guidance, or operational changes. Investors focused on ESG may appreciate the visibility into climate, governance and AI ethics initiatives, but from a capital-markets perspective the impact is informational rather than valuation-moving. Rating: neutral.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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Form 6-K

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REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

FOR THE MONTH OF JUNE 2025

Commission File Number: 333-04906

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SK Telecom Co., Ltd.

(Translation of registrant’s name into English)

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65, Euljiro, Jung-gu

Seoul 04539, Korea

(Address of principal executive office)

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

Form&nbsp;20-F ☒   &nbsp;Form&nbsp;40-F ☐

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Matters Relating to Corporate Sustainability Report of SK Telcom Co., Ltd. (the “Company”)

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1. Title of the Report	  	“SK Telecom Annual Report 2024” (the “Report”)
 	 
2. Certifying Institution	  	British Standards Institution
 	 
3. Reporting Standards	&nbsp;&nbsp;	The Report was prepared in accordance with the guiding principles of, and includes content as suggested by, the “<IR> Framework,” a standard framework established by the International Integrated Reporting Council. The Report was also prepared in accordance with the comprehensive requirements of the “GRI Standards,” the global standard for sustainability reporting established by the Global Reporting Initiative.
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4. Filing Location	&nbsp;&nbsp;	The Company’s corporate website (https://www.sktelecom.com/esg/lib/persist.do) &nbsp;
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5. Details of the Report	&nbsp;&nbsp;	1. Summary The Report was prepared for the Company’s investors and stakeholders and provides an overview of the Company’s annual performance. The Report covers not only the Company’s financial performance records, but also comprehensive information (i.e., the Company’s “Value Creation Story”) on its future prospects, non-financial performance and underlying value enhancement efforts. The Company’s board of directors approved the Report in June 2025. &nbsp; 2. Reporting Period The reporting period of the Report is from January 1, 2024 to December&nbsp;31, 2024. The Report, however, may disclose certain qualitative information up to May 2025. The Report presents quantitative data as of and for the years ended December&nbsp;31, 2022, 2023 and 2024 in order to facilitate year-over-year trend analysis. In case of any material changes in the previously reported data, such data were recalculated as of 2022. &nbsp; 3. Scope of the Report The geographic boundary of the Report is limited to the Republic of Korea, which is the Company’s principal place of business and where over 99% of its revenue is generated. Unless otherwise indicated in the Report, the data and information presented in the Report generally exclude those of the Company’s overseas branches, subsidiaries and investment companies. Financial data included in the Report are presented on a consolidated basis in accordance with the Korean International Financial Reporting Standards (“K-IFRS”), including K-IFRS No.&nbsp;16, which has been applied since 2019. Non-financial data on environmental performance and fulfillment of corporate social responsibility are presented on a non-consolidated basis. &nbsp; In case of any changes in the previously reported data resulting from the spin-off of certain of the Company’s business operations conducted in November 2021, the instance of such changes are separately indicated in the Report. Furthermore, where such changes may significantly affect the decisions of the Company’s stakeholders in consideration of the Company’s financial and operational control and business influence as well as the potential consequences of such changes, relevant data are separately included where indicated.

&nbsp; &nbsp;&nbsp; 4. Table of Contents &nbsp; DO THE GOOD AI &nbsp; DO AI &nbsp; -   Business Overview &nbsp; -   ESG Overview &nbsp; -   Special Report &nbsp; THE AI &nbsp; -   Corporate Governance &nbsp; -   Ethical Management &nbsp; -   Compliance &nbsp; -   AI Governance &nbsp; -   Information Security &nbsp; -   Risk Management &nbsp; GOOD AI &nbsp; -   Environmental Management &nbsp; -   Climate Change Response &nbsp; -   Natural Capital &nbsp; -   Employees &nbsp; -   Occupational Safety and Health &nbsp; -   Human Rights Management &nbsp; -   Customer-Centric Management &nbsp; -   Supply Chain Management &nbsp; -   Local Community &nbsp; APPENDIX &nbsp; -   Double Materiality Assessment &nbsp; -   Stakeholder Engagement &nbsp; -   Financial Statements &nbsp; -   Non-financial Statements &nbsp; -   Index &nbsp; -   Service Stability Report &nbsp; -   About This Report

6. Submission Date	  	June 27, 2025
 	 
7. Other Important Matters Relating to an Investment Decision	  	The English version of the Report is expected to be posted on the Company’s corporate website within July 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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SK TELECOM CO., LTD.
(Registrant)
By:	 	/s/ Hee Jun Chung
(Signature)
Name:	 	Hee Jun Chung
Title:	 	Vice President

Date: June 27, 2025

FAQ

What did SKM disclose in its June 2025 6-K filing?

The company announced board approval and web posting of its SK Telecom Annual Report 2024, an integrated ESG and financial report.

Which reporting standards does SKM’s 2024 sustainability report follow?

It adheres to the IIRC <IR> Framework and the GRI Standards, and is certified by the British Standards Institution.

What period is covered by SKM’s 2024 integrated report?

Quantitative data span Jan 1 2024 – Dec 31 2024, with qualitative updates to May 2025 and historical comparisons for 2022-2023.

When will the English version of SKM’s 2024 ESG report be available?

The filing states it is expected to be posted to the company website within July 2025.

Does the 6-K include new financial results for SKM?

No. The filing solely notifies investors of the report’s release and contains no new financial performance figures or guidance.