December 3, 2002 Name of the company: Mitsui Sumitomo Insurance Company, Limited (the "Company") Name of Representative : Hiroyuki Uemura, President and Director (Securities Code No. 8752) NOTICE REGARDING THE ACQUISITION OF THE COMPANY'S TREASURY STOCK (Acquisition of treasury stock of the Company pursuant to Article 210 of the Commercial Code of Japan) The Company hereby announces that pursuant to the resolution for the acquisition of treasury stock passed at the Ordinary General Meeting of Shareholders held on June 27, 2002, it resolved, at the meeting of the Board of Directors of the Company held today, to acquire treasury stock as follows: Particulars 1. Types of shares to be acquired: Shares of common stock of the Company 2. Total number of shares to be acquired: 7,000,000 shares (Maximum) 3. Aggregate amount of the acquisition cost: ¥4,200,000,000 (Maximum) 4. Acquisition period: Until December 27, 2002 5. Method of acquisition: Purchases in the market by a trust and banking company pursuant to a trust agreement to be entered into with the trust and banking company End