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 OF

THE SECURITIES EXCHANGE ACT OF 1934

FOR THE MONTH OF May 2026

Commission File Number: 333-04906

SK Telecom Co., Ltd.

(Translation of registrant’s name into English)

65, Euljiro, Jung-gu

Seoul 04539, Korea

(Address of principal executive office)

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 ☐

Preliminary Results of Operations

•

The preliminary results shown below may differ from the final results.

1. Basis: Consolidated


Classification (unit : in 100 millions of Won, %)		Current Period (First quarter⁽¹⁾ of 2026)		Previous Period (Fourth quarter⁽²⁾ of 2025)			Changes (%)			Year to Year Comparison (First quarter⁽¹⁾ of 2025)		Changes (%)
Operating Revenue	Quarterly Results		43,923		43,287			1.47			44,537		(1.38)
Operating Revenue	Year-to- date (“YTD”)⁽³⁾ Results		43,923		N.A	*		N.A	*		44,537		(1.38)
Operating Income	Quarterly Results		5,376		1,191			351.25			5,674		(5.25)
Operating Income	YTD⁽³⁾ Results		5,376		N.A	*		N.A	*		5,674		(5.25)
Profit (Loss) from Continuing Operations Before Income Tax	Quarterly Results		4,656		1,378			237.75			5,079		(8.33)
	YTD⁽³⁾ Results		4,656		N.A	*		N.A	*		5,079		(8.33)
Profit (Loss) for the Period	Quarterly Results		3,164		970			226.22			3,616		(12.49)
Profit (Loss) for the Period	YTD⁽³⁾ Results		3,164		N.A	*		N.A	*		3,616		(12.49)
Attributable To: Controlling Interests	Quarterly Results		3,224		1,125			186.44			3,644		(11.53)
Attributable To: Controlling Interests	YTD⁽³⁾ Results		3,224		N.A	*		N.A	*		3,644		(11.53)

(1)	Refers to the three-month period from January 1 to March 31 of a given year.

(2)	Refers to the three-month period from October 1 to December 30 of a given year.

(3)	Refers to the three-month period from January 1 to March 31 of a given year.

*	Means “not applicable.”

2. Basis: Separate


Classification (unit : in 100 millions of Won, %)		Current Period (First quarter⁽¹⁾ of 2026)		Previous Period (Fourth quarter⁽²⁾ of 2025)			Changes (%)			Year to Year Comparison (First quarter⁽¹⁾ of 2025)		Changes (%)
Operating Revenue	Quarterly Results		31,058		30,837			0.71			31,675		(1.95)
Operating Revenue	YTD⁽³⁾ Results		31,058		N.A	*		N.A	*		31,675		(1.95)
Operating Income (Loss)	Quarterly Results		4,095		1,308			213.20			4,824		(15.10)
Operating Income (Loss)	YTD⁽³⁾ Results		4,095		N.A	*		N.A	*		4,824		(15.10)
Profit (Loss) Before Income Tax	Quarterly Results		4,339		1,710			153.83			6,010		(27.80)
Profit (Loss) Before Income Tax	YTD⁽³⁾ Results		4,339		N.A	*		N.A	*		6,010		(27.80)
Profit (Loss) for the Period	Quarterly Results		3,327		1,060			214.01			4,746		(29.90)
Profit (Loss) for the Period	YTD⁽³⁾ Results		3,327		N.A	*		N.A	*		4,746		(29.90)

(1)	Refers to the three-month period from January 1 to March 31 of a given year.

(2)	Refers to the three-month period from October 1 to December 30 of a given year.

(3)	Refers to the three-month period from January 1 to March 31 of a given year.

*	Means “not applicable.”


3. Source of Data	Data Provider	IR, SK Telecom

	Provided for	Analysts and Investors

	Date of Provision	May 7, 2026 / 4:00 p.m. (Seoul time)

	Location	2026 1Q Earnings Results Conference Call

	Organizing Team	IR, SK Telecom (+82-2-6100-2114)

4. Other Important Matters Relating to an Investment Decision	• The preliminary results set forth in this report have been prepared on a consolidated basis and separate basis in accordance with International Financial Reporting Standards as adopted in Korea and may be subject to change based on the results of the audit by the Company’s external auditor. • For further relevant materials, please refer to the Company’s IR website at: https://www.sktelecom.com/en/investor/lib/announce.do

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.


SK TELECOM CO., LTD.
(Registrant)

By:		/s/ Taehee Kim
(Signature)
Name:		Taehee Kim
Title:		Vice President

Date: May 7, 2026

SK TELECOM CO LTD 6-K