Background of Group Integration

History of Holdings

April 2008 Mitsui Sumitomo Insurance Group Holdings, Inc. is incorporated.
Mitsui Sumitomo Insurance Group Holdings, Inc. Listed on Tokyo
Stock Exchange and Osaka Securities Exchange and Nagoya Stock Exchange.
September 2009 Aioi Insurance Co., Ltd., Nissay Dowa General Insurance Co., Ltd., and
Mitsui Sumitomo Insurance Group Holdings, Inc. reach basic agreement on
business integration.
In conjunction, announced integration plan, president of the holding company,
address, descriptions and corporate name, etc.
April 2010 Mitsui Sumitomo Insurance Group Holdings, Inc. changed its name to
MS&AD Insurance Group Holdings, Inc.
October 2010 Aioi Insurance Co., Ltd. and Nissay Dowa General Insurance Co., Ltd. merged
into “Aioi Nissay Dowa Insurance Co., Ltd.”
April 2011 MS&AD Insurance Group Holdings, Inc. converted Mitsui Sumitomo MetLife
Insurance Co., Ltd. into a wholly owned subsidiary and renamed it
Mitsui Sumitomo Primary Life Insurance Company, Limited
October 2011 Mitsui Sumitomo Kirameki Life Insurance Co., Ltd. and Aioi Life Insurance
Co., Ltd. merged into “Mitsui Sumitomo Aioi Life Co., Ltd.”