| The Company has adopted a disclosure policy governing
information disclosure-related activities. The principal features
of the policy are as follows: |


Since the 1996 revision of the Insurance Business Law, deregulation
and regulatory relaxation measures have made Japan's non-life insurance
industry increasingly diverse with respect to products, prices, and
services. Amid the increasingly large and rapid changes that this
trend has brought about, the importance of timely and accurate corporate
information disclosure has risen still further.
Regarding Mitsui Sumitomo Insurance's information disclosure, the
Company has, since July 2002, prepared and disclosed MS Quarterly
Report on its business performance and other topics. Moreover, in
July 2003, it became the only member of Japan's non-life insurance
industry to disclose consolidated performance figures on a quarterly
basis. In these and other ways, the Company has been a leader in its
industry.
In the future, Mitsui Sumitomo Insurance intends to proactively and
speedily disclose information with the goal of ensuring that customers,
shareholders, investors, and others can accurately grasp and appraise
the situation of the Mitsui Sumitomo Insurance Group. |


| In line with the basic policy described above,
Mitsui Sumitomo Insurance has prepared in-house standards* for information
disclosure. In accordance with these standards, the Company is speedily
and fairly disclosing useful information that facilitates the contract-
and investment-related decision making of customers and investors.
|
| * |
Principal Types of Information Covered by In-house Disclosure Standards
The standards cover information related to corporate management, products
and services, investments, asset-liability management, risk management,
corporate performance, reinsurance, overseas business, computer systems,
social contributions, environmental protection, and Group companies. |


| Through information disclosure activities involving such diverse
media as disclosure pamphlets, news releases, and Internet Web pages,
Mitsui Sumitomo Insurance is striving to ensure that it fairly provides
information to customers, shareholders, investors, and other interested
parties. |
|