March 1, 2002 NOTICE REGARDING THE ACQUISITION RESULTS OF TREASURY STOCK BY ToSTNeT-2 Name of the company: Mitsui Sumitomo Insurance Company, Limited (the "Company") Name of Representative : Hiroyuki Uemura, President and Director (Securities Code No. 8752) You are hereby notified that as of the date hereof the Company conducted the acquisition of treasury stock of the Company as stated below, of which you were notified yesterday (February 28). Particulars 1. Types of shares acquired: Common stock of shares of the Company 2. Number of shares acquired: 18,065,000 shares 3. Acquisition cost: ¥579 per share 4. Date of the acquisition: March 1, 2002 5. Method of the acquisition: Purchase made by the ToSTNeT-2 of the Tokyo Stock Exchange (the closing price transaction) (Reference 1) Aggregate number of treasury stock of the Company acquired until March 1, 2002 Number of shares acquired: 18,065,000 shares Aggregate amount of the acquisition: ¥10,459,635,000 (Reference 2) Contents of the acquisition of treasury stock of the Company resolved upon at the meeting of the Board of Directors held on February 28, 2002 Types of shares to be acquired: Common stock of shares of the Company Aggregate number of shares to be acquired:20,000,000 shares (maximum) Aggregate amount of the acquisition cost of shares: ¥13,000,000,000 (maximum) End