Important Business Matters

8 Feb 2007 10:03

(Important Business Matters)

Other Important Business Matters

1. Reason for filing:

* Disclosure of the results of operations for 2006 and the projected results of operations for 2007 of HELIO, LLC * Disclosure of important management matters of HELIO, LLC 2. Details: (1) Results of Operations 2006 2007 (Estimate) Subscribers 70,000 persons 200,000 to 250,000 persons Revenues US$47 million US$140 million to US$170 million Net Loss US$192 million US$330 million to US$360 million

(2) Important Management Matters

* Average Revenue Per User ("ARPU") as of 2006: approximately US$100 (approximately twice the U.S. mobile telecommunications industry average) * Data ARPU: 25% or more of total ARPU (approximately 3 times the U.S. mobile telecommunications industry average) * Free Cashflow Positive expected around 2009

3. Date of decision / occurrence: February 7, 2007

4. Other noteworthy matters: SKT USA Holdings, Inc., a U.S. subsidiary of SK

Telecom Co., Ltd., holds 50% of the equity interests of HELIO, LLC.

Forward-Looking Statement Disclaimer

The material above contains forward-looking statements. Statements that are not historical facts, including statements about our beliefs and expectations, are forward-looking statements. These statements are based on current plans, estimates and projections, and therefore you should not place undue reliance on them. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause our actual results or performance to be materially different from any future results or performance expressed or implied by such forward-looking statements. We do not make any representation or warranty, express or implied, as to the accuracy or completeness of the information contained herein, and nothing contained herein is, or shall be relied upon as, a promise or representation, whether as to the past or the future. Forward-looking statements speak only as of the date they are made, and we undertake no obligation to update publicly any of them in light of new information or future events. Additional information concerning these and other risk factors are contained in our latest annual report on Form 20-F and in our other filings with the U.S. Securities and Exchange Commission.

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/ Tae Jin Park (Signature) Name: Tae Jin Park Title: Vice PresidentDate: February 8, 2007