-Translation- AIS-CP 073/2006 June 2, 2006 Subject: Report on the results of the exercise of warrants (ESOP Grant I, II, III, IV) in May 2006. 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 I Grant II Grant III Grant IV The number of warrants 14,000,000 8,467,200 8,999,500 9,794,800 (units) Issuing Date March 27,2002 May 30,2003 May 31,2004 May 31,2005 Exercise Price (Baht/Share) 45.324 40.985 87.816 103.341 Exercise Ratio 1:1.05843 1:1.05843 1:1.04525 1:1.03213 (warrant : common share) Maturity of Warrants 5 years from the issuing date The Company would like to report the results of the exercise of warrants (ESOP Grant I, II, III, IV) in May 2006 as follows: Outstanding of ESOP Grant I Grant II Grant III Grant IV No. of exercised warrants 283,200 871,000 18,900 - in this month (units) No. of remaining unexercised 1,522,300 3,038,500 8,235,700 9,794,800 warrants (units) No. of shares derived from 299,746 921,883 19,754 - this exercise (shares) No. of remaining shares 1,625,746 3,219,251 8,614,961 10,116,900 reserved for warrants (shares) Please be informed accordingly. Yours faithfully, -Signed- Somprasong Boonyachai (Mr.) Director Advanced Info Service Public Company Limited