-Translation- AIS-CP 005/2010 February 2, 2010 Subject: Report on the results of the exercise of warrants (ESOP Grant IV and V) in January 2010. To: The President The Stock Exchange of Thailand Advanced Info Service Public Company Limited ("the Company") issued and offered the warrants to purchase the Company's ordinary shares to directors and employees of the Company (ESOP). The details of Warrants are as follows: Details of ESOP Grant IV Grant V The number of warrants (units) 9,686,700 10,138,500 Issuing Date May 31,2005 May 31,2006 Exercise Price (Baht/Share) 89.292 79.029 Exercise Ratio (warrant : common share) 1:1.19454 1:1.15737 Maturity of Warrants 5 years from the issuing date The Company would like to report the results of the exercise of warrants (ESOP Grant IV and V) in January 2010 as follows: Outstanding of ESOP Grant IV Grant V No. of exercised warrants in this month (units) - 15,000 No. of remaining unexercised warrants (units) 9,004,900 6,701,800 No. of shares derived from exercise (shares) - 17,360 No. of remaining shares reserved for warrants (shares) 10,595,132 7,668,975 Please be informed accordingly. Yours faithfully, -Signed- Mr. Vikrom Sriprataks Director Advanced Info Service Plc.