Sompo Japan
A major Japanese property and casualty insurer with domestic insurance operations and an international commercial insurance network.
Last updated August 25, 2026
Overview
Sompo Japan, Inc. is a Japanese insurance company operating primarily in property and casualty insurance. It is the principal domestic insurance business associated with Sompo Holdings, one of Japan’s major insurance groups. The company provides cover for automobiles, homes and commercial property, marine risks, liability, accidents and other non-life exposures. Although “Sompo” derives from the Japanese term for general or non-life insurance, the wider group has also operated businesses connected with life insurance, securities, asset management, venture capital and other financial services. The company’s historical roots reach back to Tokyo Fire Insurance Company, established in 1887 as Japan’s first fire insurance company. The early business helped develop public awareness of fire insurance in Japan, although the major Yokosuka fire of 1890 placed significant pressure on the young insurer. In 1893, entrepreneur Zenjiro Yasuda brought Tokyo Fire Insurance into the Yasuda zaibatsu, beginning the corporate lineage that later produced Yasuda Fire & Marine Insurance. In 1944, Tokyo Fire Insurance, Imperial Marine Insurance and First Engine & Boiler Insurance were combined to form Yasuda Fire & Marine Insurance Company. The modern Sompo Japan entity was created through consolidation in Japan’s insurance sector. Yasuda Fire merged with Nissan Fire & Marine Insurance on July 1, 2002, producing Sompo Japan Insurance Inc. The company acquired Taisei Fire & Marine Insurance in December 2002 and expanded further through the acquisition of Nipponkoa Insurance, completed in 2014. For a period after that transaction, the business was known as Sompo Japan Nipponkoa Insurance. It subsequently adopted the shorter Sompo Japan name within the reorganized Sompo group. Sompo Japan has developed beyond a purely domestic insurer. Its international activities have included branch offices, subsidiaries, underwriting platforms and partnerships in roughly three dozen markets or territories over time. In Asia-Pacific, the group has operated in China, Australia, Malaysia, India, Indonesia and the Philippines. In Europe, it has maintained operations in countries including the United Kingdom, Belgium, France, Germany, Italy, the Netherlands, Spain and Turkey, including a corporate presence in the Lloyd’s of London market. In the Americas, its activities have included the United States, Canada, Mexico, Brazil and Bermuda. Major international expansion included the acquisition of Canopius Group in 2014 for approximately £594 million, giving Sompo a specialist Lloyd’s platform. In 2016, Sompo completed the acquisition of Bermuda-based insurer Endurance for approximately US$6.3 billion and integrated the business into Sompo International, a global commercial property and casualty and reinsurance platform. These transactions strengthened the group’s position in specialty insurance and global risk transfer rather than simply expanding its Japanese retail presence. Sompo Japan has also been associated with significant corporate controversies. In 2023, Japanese regulators investigated the company’s relationship with Big Motor, a major used-car dealer accused of systematic insurance fraud. Regulators alleged that Sompo Japan continued its business relationship with Big Motor despite warnings and concerns about fraudulent claims practices. The Financial Services Agency searched Sompo Japan’s offices in September 2023 and later required improvements to governance and management controls. President Giichi Shirakawa resigned in January 2024, while Sompo Holdings chief executive Kengo Sakurada stepped down from his group leadership role in March 2024. The episode became a major test of the insurer’s compliance, oversight and distribution practices. Sompo Japan also remains linked to the history of Yasuda Fire’s 1987 purchase of Vincent van Gogh’s “Sunflowers,” acquired for about ¥5.3 billion. In 2022, heirs of Jewish banker and collector Paul von Mendelssohn-Bar…
History
Sompo Japan traces its institutional history to Tokyo Fire Insurance Company, founded in 1887 as Japan’s first fire insurance company. The company established several branches during its first year and worked to build awareness of fire insurance in Japan. Its early development was threatened by the major Yokosuka fire of 1890. In 1893, entrepreneur Zenjiro Yasuda absorbed the company into the Yasuda zaibatsu, linking it to the financial and industrial group that later became associated with Yasuda Fire. During the wartime consolidation of Japan’s insurance industry, Tokyo Fire Insurance merged with Imperial Marine Insurance and First Engine & Boiler Insurance in 1944. The resulting business was named Yasuda Fire & Marine Insurance Company. Its activities covered both fire and marine risks, reflecting the broadening of Japan’s commercial insurance sector. The company later became known for its participation in the art market after successfully bidding for Vincent van Gogh’s “Sunflowers” in 1987 for approximately ¥5.3 billion. The painting and its ownership history subsequently became the subject of a lawsuit filed in 2022 by heirs of Jewish banker and collector Paul von Mendelssohn-Bartholdy. The present Sompo Japan company emerged from a major domestic merger completed on July 1, 2002, when Yasuda Fire merged with Nissan Fire & Marine Insurance. The new company was named Sompo Japan Insurance Inc. It acquired Taisei Fire & Marine Insurance in December of the same year, further consolidating its Japanese operations. International development continued through partnerships, subsidiaries and branches across Asia-Pacific, Europe and the Americas. In 2014, Sompo Japan acquired Nipponkoa Insurance. The combined business used the Sompo Japan Nipponkoa name before later adopting the shorter Sompo Japan identity. The same period brought a major expansion in specialty insurance: Sompo agreed to purchase Canopius Group for approximately £594 million in April 2014. Canopius provided access to specialist underwriting and the Lloyd’s of London market. Sompo expanded its global commercial and reinsurance capabilities again through the acquisition of Bermuda-based Endurance. Announced in 2016 and completed in October of that year, the transaction was valued at approximately US$6.3 billion. Endurance was delisted from the New York Stock Exchange after completion and became part of Sompo International, a platform designed to coordinate international insurance and reinsurance activities. John Charman, previously associated with Endurance, became chairman and chief executive of the new platform and reported to Sompo chief executive Kengo Sakurada. The company’s international network has included operations in China, Australia, Malaysia, India, Indonesia and the Philippines in the Asia-Pacific region; the United Kingdom, Belgium, France, Germany, Italy, the Netherlands, Spain and Turkey in Europe; and the United States, Canada, Mexico, Brazil and Bermuda in the Americas. Its business mix has included retail and commercial insurance, specialty underwriting, marine coverage, risk management and reinsurance. Sompo Japan’s recent history has also been marked by regulatory and governance challenges. In 2023, the company became embroiled in the Big Motor insurance fraud scandal. Japanese authorities alleged that Big Motor had engaged in widespread fraudulent practices involving vehicle repairs and insurance claims. Sompo Japan faced particular criticism because it continued dealing with Big Motor after receiving warnings, while other insurers suspended their relationships and investigated. The Financial Services Agency searched Sompo Japan’s offices in September 2023 and concluded that management had failed to respond appropriately to concerns. Following regulatory demands for stronger management practices, Sompo Japan president Giichi Shirakawa resigned on January 26, 2024, and Sompo Holdings chief executive Kengo Sakurada stepped down in March 2024.
- 2024Senior leadership changes follow regulatory scrutiny
President Giichi Shirakawa resigned in January and Sompo Holdings chief executive Kengo Sakurada stepped down in March after the Big Motor affair.
- 2023Big Motor insurance scandal
Sompo Japan faced regulatory investigation and public criticism over its continued relationship with Big Motor amid allegations of systematic insurance fraud.
- 2016Endurance becomes part of Sompo International
Sompo completed its approximately US$6.3 billion acquisition of Endurance and integrated it into a Bermuda-based international insurance and reinsurance platform.
- 2014Nipponkoa Insurance acquisition
Sompo Japan acquired Nipponkoa Insurance and subsequently operated under the Sompo Japan Nipponkoa name.
- 2014Canopius Group acquisition
Sompo agreed to acquire specialist Lloyd’s market company Canopius Group for approximately £594 million.
- 2002Sompo Japan is established
Yasuda Fire and Nissan Fire & Marine Insurance merged on July 1 to create Sompo Japan Insurance Inc.
- 2002Taisei Fire & Marine is acquired
Sompo Japan acquired Taisei Fire & Marine Insurance in December.
- 1987Yasuda Fire acquires van Gogh’s Sunflowers
Yasuda Fire bought Vincent van Gogh’s Sunflowers for approximately ¥5.3 billion.
- 1944Yasuda Fire & Marine Insurance is formed
Tokyo Fire Insurance, Imperial Marine Insurance and First Engine & Boiler Insurance merged to form Yasuda Fire & Marine Insurance Company.
- 1893Tokyo Fire Insurance joins the Yasuda zaibatsu
Zenjiro Yasuda absorbed Tokyo Fire Insurance into the Yasuda business group.
- 1887Tokyo Fire Insurance Company is founded
Tokyo Fire Insurance Company was established as Japan’s first fire insurance company, creating the oldest major institutional root of Sompo Japan.
Products and positioning
A comprehensive property and casualty insurer combining Japan’s broad domestic distribution network with international commercial, specialty and reinsurance capabilities.
Automobile insurancePersonal lines
Sompo Japan’s automobile insurance business covers common vehicle-related risks for private and commercial users, including third-party liability and damage connected with accidents. Automobile insurance is also important to the company’s distribution relationships with vehicle dealers and repair networks, a channel that became a major governance issue during the Big Motor scandal.
Fire and home insuranceProperty insurance1887
Fire insurance is central to Sompo Japan’s historical identity, reflecting the company’s origin in Tokyo Fire Insurance. Modern property offerings extend beyond fire damage to cover homes, buildings and associated risks. Depending on the policy and market, property insurance can include protection for natural catastrophes, contents, business interruption and other related exposures.
Marine insuranceCommercial insurance1944
Marine insurance is part of the company’s long-standing commercial insurance capability. Its historical predecessor became Yasuda Fire & Marine Insurance in 1944 after a merger that combined fire, marine and engineering-related businesses. The modern business serves shipping, cargo and other transport-related risks within a broader commercial insurance portfolio.
Personal accident insurancePersonal lines
Personal accident insurance protects individuals against specified accidental injuries and related consequences. It complements Sompo Japan’s automobile, home and other personal insurance products and forms part of the company’s broad Japanese non-life insurance offering.
Commercial property and casualty insuranceCommercial insurance
Sompo Japan serves businesses with insurance for property damage, liability, marine exposures, accidents and other operational risks. Through the wider Sompo group and Sompo International, the commercial portfolio extends into specialty underwriting and reinsurance for multinational and complex risks.
Flagship businesses
- Domestic non-life insurance
- Commercial property and casualty coverage
- Automobile insurance
- Global specialty insurance and reinsurance through Sompo International
Brand decisions
- 2024Strengthen management practices after Big Motor investigationStrategy
Regulatory scrutiny found serious problems in Sompo Japan’s response to warnings about Big Motor’s insurance practices and raised questions about internal governance.
What changed. The Financial Services Agency ordered improvements to management practices, followed by the resignation of Sompo Japan president Giichi Shirakawa and the departure of Sompo Holdings chief executive Kengo Sakurada.
Aftermath. The affair produced senior leadership changes and increased scrutiny of insurer-dealer relationships, claims governance and compliance controls.
- 2016Acquire Endurance and create Sompo InternationalM&A
Sompo pursued a larger international platform in commercial insurance and reinsurance, using Endurance’s Bermuda base and global specialty capabilities.
What changed. Sompo acquired 100 percent of Endurance and integrated it into the newly launched Sompo International platform.
Aftermath. Endurance was delisted from the New York Stock Exchange, while Sompo International became a major vehicle for the group’s global specialty and reinsurance activities.
Acquisition value. approximately US$6.3 billion (2016)
- 2014Acquire Canopius GroupM&A
Sompo sought to increase its specialty insurance and international underwriting presence, particularly in the Lloyd’s market.
What changed. Sompo agreed to purchase Canopius Group for approximately £594 million.
Aftermath. The acquisition expanded Sompo’s access to specialist commercial insurance and Lloyd’s underwriting capabilities.
Acquisition value. approximately £594 million (April 2014)
- 2002Merge Yasuda Fire with Nissan Fire & MarineM&A
Japan’s insurance sector was undergoing consolidation, and the two insurers combined their operations to create a larger non-life insurance company.
What changed. The merger was completed on July 1, 2002, creating Sompo Japan Insurance Inc.
Aftermath. The new company became one of Japan’s leading property and casualty insurers and continued expanding through acquisitions.
Leadership
| Name | Title | Tenure |
|---|---|---|
| Giichi Shirakawa | President of Sompo Japanformer | –2024 |
| Kengo Sakurada | Chief executive of Sompo Holdingsformer | –2024 |
| John Charman | Chairman and chief executive of Sompo International at its formation | 2016– |
Controversies
- 2023Big Motor insurance fraud scandalControversy
Sompo Japan was implicated in the wider Big Motor scandal after the used-car dealer was accused of systematic insurance fraud. Regulators scrutinized Sompo Japan because it continued business with Big Motor despite warnings and concerns, and because of the commercial importance of Big Motor’s sales channel. The Financial Services Agency searched Sompo Japan’s offices in September 2023 and criticized the company’s management and oversight.
- 2022Litigation over the provenance of SunflowersControversy
Heirs of Jewish banker and art collector Paul von Mendelssohn-Bartholdy filed suit in Chicago seeking to reclaim Vincent van Gogh’s Sunflowers, which Yasuda Fire acquired in 1987. The plaintiffs alleged that the insurer failed to account adequately for the painting’s Holocaust-linked ownership history.
Recent events
- 2016Sompo completes acquisition of Endurance
Sompo completed its purchase of Bermuda-based Endurance and incorporated the business into Sompo International.
M&A - 2014Sompo Japan acquires Nipponkoa Insurance
The transaction created a larger combined Japanese insurance business that operated for a period under the Sompo Japan Nipponkoa name.
M&A - 2014Sompo purchases Canopius Group
The acquisition strengthened Sompo’s specialty insurance and Lloyd’s market capabilities.
M&A - 2002Sompo Japan is created through the merger of Yasuda Fire and Nissan Fire & Marine
The merger established Sompo Japan Insurance as a new major Japanese non-life insurer.
M&AOther - 2002Sompo Japan acquires Taisei Fire & Marine Insurance
The company expanded its domestic insurance platform through the acquisition of Taisei Fire & Marine Insurance.
M&A
Sources
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