Mitsui Sumitomo Insurance to Acquire Time Machine Underwriters
Mitsui Sumitomo Insurance (MSI), a subsidiary of MS&AD Insurance Group, has decided to acquire shares of Time Machine Underwriters (TMU), a Managing General Agency (MGA) specialized in Representation & Warranty Insurance in Japan.
MSI plans to acquire the majority ownership share of TMU on August 1 2025, and the remaining shares after a certain period of time to make it a 100% subsidiary. MSI, which plans to merge with Aioi Nissay Dowa Insurance around April 2027, will further enhance underwriting and marketing strategies for Representation and Warranty Insurance under the new merged company.
With the changing business environment and lack of successors for family owned businesses, the number of M&A transactions among Japanese companies has been steadly increasing as an effective solution for business continuity and inorganic growth strategies. In particular, transactions involving private equity and publicly listed companies have grown significantly, resulting in an increase in demand for Representation and Warranty Insurance.
TMU, established as the first company in Japan specializing in underwriting Representation and Warranty Insurance, has been providing underwriting services to MSI since 2020. Through this acquisition, MSI will be able to integrate TMU’s outstanding underwriting expertise with MSI’s market presence and underwriting capability both domestically and internationally allowing MSI to further deliver value added products and services to the market.

