Mitsui Sumitomo to acquire majority ownership share of Time Machine Underwriters
- September 7, 2025
- Posted by: Beth Musselwhite
- Category: Insurance
Mitsui Sumitomo Insurance (MSI), a subsidiary of MS&AD Insurance Group Holdings, has announced plans to acquire shares of Time Machine Underwriters Co., Ltd. (TMU), a Managing General Agency (MGA) in Japan specialising in Representation and Warranty (R&W) Insurance.
Established in 2019, TMU was the first company in Japan specialising in underwriting R&W Insurance. Kosuke Inada serves as its Founder and CEO. The company has been providing underwriting services to MSI since 2020.
MSI intends to acquire a majority ownership share of TMU on August 1, 2025, with plans to acquire the remaining shares over time, making TMU a wholly owned subsidiary.
The acquisition will combine TMU’s underwriting expertise with MSI’s domestic and international market presence, strengthening MSI’s ability to deliver value-added products and services.
As MSI prepares to merge with Aioi Nissay Dowa Insurance Co., Ltd. around April 2027, it aims to further strengthen its underwriting and marketing strategies for R&W Insurance under the new merged entity.
MSI noted a steady rise in M&A activity among Japanese companies, driven by a shifting business environment and a shortage of successors in family-owned businesses. M&A transactions are increasingly seen as an effective solution for business continuity and inorganic growth.
Notably, deals involving private equity and publicly listed companies have grown significantly, driving increased demand for R&W Insurance.
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