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Mitsui Sumitomo Insurance Group (MSIG) is a major Japanese non-life insurance company, operating globally as a core entity within the MS&AD Insurance Group Holdings, Inc. It provides a wide range of insurance products and risk management services, including fire, marine, automobile, personal accident, and liability insurance, catering to both corporate and individual clients. MSIG is known for its financial strength, extensive global network, and commitment to customer service and societal contribution.
Core operational headquarters for Mitsui Sumitomo Insurance Co., Ltd., overseeing domestic and international non-life insurance business, underwriting, claims processing, product development, and key corporate functions.
A modern, large-scale office building (Surugadai Building) equipped to support extensive insurance operations. It is strategically located in a significant business hub of Tokyo.
The work culture is characterized by professionalism, a strong emphasis on customer trust ('Anshin'), ethical conduct, and teamwork. It blends traditional Japanese corporate values with a progressive, global outlook necessary for international operations.
This headquarters is a nerve center for one of Japan's largest non-life insurers, directing its vast domestic operations and coordinating with its global network spanning numerous countries and regions.
Mitsui Sumitomo Insurance Group (MSIG) supports a wide array of functions globally, reflecting its status as a major international non-life insurer. Its operations span across Asia, Europe, North America, South America, Oceania, the Middle East, and Africa, with a presence in over 40 countries and regions. Key functions supported globally include underwriting for various lines of general insurance (marine, property, casualty, auto, specialty), claims management, risk engineering and consulting services, reinsurance operations, product development tailored to local markets, and customer support for both individual and corporate clients. The global network enables MSIG to serve multinational corporations with consistent service and local expertise worldwide.
9, Kanda-surugadai 3-chome
Tokyo
Chiyoda-ku
Japan
Address: MSIG Insurance (Singapore) Pte. Ltd., 4 Shenton Way, #24-01 SGX Centre 2, Singapore 068807
Strategic hub for business development, underwriting, claims management, and operational oversight for the diverse and growing Asian markets.
Address: Mitsui Sumitomo Insurance Company (Europe), Limited, 25 Fenchurch Avenue, London, EC3M 5AD, United Kingdom
Key center for accessing the Lloyd's market and serving multinational clients with European exposures, focusing on corporate and specialty insurance.
Address: MSIG USA Inc., 15 Independence Boulevard, Warren, NJ 07059, USA
Manages underwriting, claims, and service delivery for U.S. based clients, including Japanese and other multinational corporations operating in North America.
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As of April 2025, MS Amlin' leadership includes:
MS Amlin has been backed by several prominent investors over the years, including:
MS&AD Insurance Group, the parent company of Mitsui Sumitomo Insurance Group, announced key leadership transitions at the holding company level, effective April 1, 2024. These include a new Group CEO. Such changes at MS&AD guide the overall strategy for its core subsidiaries, including Mitsui Sumitomo Insurance Co., Ltd. Specific executive changes within MSIG itself are often part of broader group realignments and internal rotations typical in large Japanese corporations.
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Mitsui Sumitomo Insurance Group (ms-ins.com) commonly utilizes standard corporate email formats. While multiple patterns might exist across its global operations, a frequent format for its Japanese headquarters and related entities is [first].[last]@ms-ins.com.
[first].[last]@ms-ins.com
Format
taro.suzuki@ms-ins.com
Example
80%
Success rate
MS&AD Holdings Official Website • May 20, 2024
MS&AD Insurance Group Holdings, Inc. released its consolidated financial results for the fiscal year ending March 31, 2024. The report detailed robust performance, increased net income, and positive trends across its domestic non-life, international, and life insurance segments, highlighting strong underwriting profit and strategic growth initiatives....more
Reinsurance News • May 21, 2024
MS&AD Insurance Group Holdings reported a significant increase in ordinary profit and net income for fiscal year 2023. The group's underwriting profit showed substantial growth, driven by strong performances in its domestic P&C and international businesses, effectively managing the impact of natural catastrophe losses....more
MSIG (Mitsui Sumitomo Insurance) Website • April 1, 2024
Mitsui Sumitomo Insurance details its commitment to 'MSV (MSI's Shared Value),' an initiative focused on resolving social issues and achieving sustainable growth by leveraging its core insurance business. This includes efforts in areas like disaster prevention/mitigation, climate change response, and promoting a vibrant aging society....more
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