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 JANUARY 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 ☐

Disposal of Treasury Shares

1. Number of Treasury Shares to be Disposed

Common shares

71,726

Preferred shares

—

2. Price of the Treasury Shares to be Disposed (Won)

Common shares

50,276

Preferred shares

—

3. Estimated Aggregate Disposal Value (Won)

Common shares

3,606,096,376

Preferred shares

—

4. Disposal Period

From

February 4, 2026

March 25, 2026

5. Purpose of Disposal

Disclosure of the entire stock option grant approved at a
previous annual general meeting of shareholders due to
the initial exercise of stock options

6. Method of Disposal

Over-the-counter

7. Disposal Counterparties

9 current and retired executive officers

8. Investment Brokerage Agent

—

9. Treasury Shares Held Before Disposal

Acquisition within Limit Based on Maximum Amount of Dividends Payable

Common shares

1,807,778

Percentage of shares (%)

0.84

Preferred shares

—

Percentage of shares (%)

—

Other Acquisition

Common shares

—

Percentage of shares (%)

—

Preferred shares

—

Percentage of shares (%)

—

10. Date of Decision of Disposal

January 28, 2026

- Attendance of Outside Directors

—

- Attendance of Auditors (Audit Committee Members who are not Outside Directors)

—

11. Maximum Daily Sale Order

Common shares

—

Preferred shares

—

12. Other Matters Relating to an Investment Decision

In accordance with Article 5-9 of the Regulation on Securities Issuance and Disclosure, this report concerns the disclosure of all stock options granted at the general meeting of shareholders held in 2021 (the “2021 General Meeting of Shareholders”) as shares scheduled for disposal, triggered by the initial exercise of stock options by certain of the grantees. Currently, 609 shares have been confirmed for disposal (exercising grantee: one retired executive officer).

Regarding Item 1 above, in accordance with Article 5-9 of the Regulation on Securities Issuance and Disclosure, the number of treasury shares to be disposed of includes all stock options granted at the 2021 General Meeting of Shareholders (101,060 shares), except shares for which rights have expired (29,334 shares). If stock options are exercised in the future, the number of treasury shares to be disposed of will be confirmed and distributed accordingly.

As the holder of the stock options that were exercised at this time have elected for the “compensation in treasury shares for the difference in price” method, SK Telecom Co., Ltd. (the “Company”) will transfer treasury shares equivalent in value to the difference between the exercise price and the closing market price on the exercise date. A total of 5,375 stock options have been exercised, and 609 treasury shares have been confirmed for payment. The number of shares to be disposed of was calculated based on the closing market price on the stock option exercise date.

Among the exercisable stock options, 66,351 shares remain unconfirmed for disposal and may be subject to change depending on future exercise requests and methods of settlement.


(Unit: shares and Won)


Classification	Exercisable stock options	Exercised	Not yet exercised	Exercise price	Exercisable period
Granted in 2021	71,726	5,375	66,351	50,276	March 25, 2026
Total	71,726	5,375	66,351

Regarding Item 2 above, the price of the treasury shares to be disposed of is the exercise price of the stock options.

Regarding Item 3 above, the estimated aggregate disposal value has been calculated by multiplying the number of shares to be disposed of by the disposal price per share.

Regarding Item 6 above, the disposal will be implemented by the transfer of shares from the Company’s securities account for treasury shares to the securities account of each recipient.

Pursuant to Article 176-2 of the Financial Investment Services and Capital Markets Act, a separate resolution by the board of directors is not required.

[Treasury Shares Held Prior to Decision on Disposal of Treasury Shares]

(Unit: shares)


Method of acquisition			Type of shares	Beginning	Change			End	Notes
Method of acquisition			Type of shares	Beginning	Acquired (+)	Disposed (–)	Cancelled (–)	End	Notes
Acquisition within limit based on maximum amount of dividends payable	Direct acquisition	Direct acquisition through stock exchange	Common shares	—	—	—	—	—	—
		Direct acquisition through stock exchange	Preferred shares	—	—	—	—	—	—
		Over-the-counter acquisition	Common shares	—	—	—	—	—	—
		Over-the-counter acquisition	Preferred shares	—	—	—	—	—	—
		Tender offer	Common shares	—	—	—	—	—	—
		Tender offer	Preferred shares	—	—	—	—	—	—
		Subtotal (a)	Common shares	—	—	—	—	—	—
		Subtotal (a)	Preferred shares	—	—	—	—	—	—
	Acquisition through broker	Held in trust by broker	Common shares	—	—	—	—	—	—
		Held in trust by broker	Preferred shares	—	—	—	—	—	—
		Held by Company	Common shares	1,807,778	—	—	—	1,807,778	—
		Held by Company	Preferred shares	—	—	—	—	—	—
		Subtotal (b)	Common shares	1,807,778	—	—	—	1,807,778	—
		Subtotal (b)	Preferred shares	—	—	—	—	—	—
Other acquisition (c)			Common shares	—	—	—	—	—	—
Other acquisition (c)			Preferred shares	—	—	—	—	—	—
Total (a+b+c)			Common shares	1,807,778	—	—	—	1,807,778	—
Total (a+b+c)			Preferred shares	—	—	—	—	—	—

[Additional Disclosure Items]

Relationship between the Company or its largest shareholder and each counterparty to the disposal

Individual(s) who exercised stock options granted at the March 2021 Annual General Meeting of Shareholders

Reason for selection of counterparties to the disposal

Grant of stock options at the March 2021 Annual General Meeting of Shareholders

Number of shares disposed of per counterparty (shares)

Number of stock options granted at the March 2021 Annual General Meeting of Shareholders

Basis for price calculation

Exercise price of the stock options granted at the March 2021 Annual General Meeting of Shareholders

Expected dilutive effect on the value of the Company’s shares

While the number of outstanding shares will increase by the number of shares transferred based on the application of the “compensation in treasury shares for the difference in price” method (not the entire number of treasury shares scheduled for disposal (71,726 shares)), considering the total number of outstanding shares, the dilutive effect on the value of the Company’s shares is expected to be limited.

SIGNATURE

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: January 28, 2026

SK TELECOM CO LTD 6-K