Mitsui Sumitomo Insurance Co., Ltd. has completed the acquisition of 15% of the issued and outstanding common stock of W. R. Berkley Corporation, establishing a minority shareholding in the US insurer at a time when Asia-Pacific insurance executives expect domestic merger and acquisition activity to increase in the coming years. Mitsui Sumitomo, a subsidiary of MS&AD Insurance Group Holdings, Inc., acquired all of the shares on the secondary market from public shareholders.
No shares were bought directly from W. R. Berkley or from members of its founding family. The acquired stock is entitled to vote on the election of directors and is referred to as the “MSI Shares” in the underlying agreements. The transaction stems from a set of investment and voting agreements between Mitsui Sumitomo and the W. R. Berkley founding family, signed on March 28, 2025 (the “Investment and Voting Agreements”). These agreements set out how the parties will coordinate on board representation and voting matters.
Under the Investment and Voting Agreements, the founding family will recommend the nomination and election of an “MSI Designee” to W. R. Berkley’s board of directors. Any nominee will be subject to review by the company’s nominating and corporate governance committee and approval by the full board, in line with W. R. Berkley’s existing governance policies and procedures. Mitsui Sumitomo and the founding family also intend to vote their respective holdings of W. R. Berkley common stock in alignment with each other, in accordance with the terms of the agreements. The structure effectively formalizes how the two shareholder groups will exercise their voting rights on director elections and other matters brought to a shareholder vote. Mitsui Sumitomo has indicated that it plans to explore strategic opportunities with W. R. Berkley. The company said it will reflect its share of W. R. Berkley’s earnings in its consolidated financial figures in line with applicable equity accounting standards. MSI also stated it intends to continue working with the founding family to increase shareholder value for both MSI and W. R. Berkley.
The completion of the W. R. Berkley investment comes against a backdrop of rising expectations for domestic M&A in key Asia-Pacific insurance markets. According to research commissioned by Clearwater Analytics, 96% of 150 senior executives from insurance asset management businesses in Australia, Hong Kong, and Singapore expect domestic deal activity to rise over the next three years. Of those, 15% anticipate a dramatic increase in transactions. The respondents collectively represent organizations overseeing US$3.823 trillion in assets under management. The survey, conducted in October 2025 by independent research agency PureProfile, included senior leaders from life and health insurers, general insurers, and third-party investment firms managing assets for APAC-based life insurers.
The study indicates that the main driver of expected M&A is the need to achieve faster growth and greater scale. Executives cited diversification of risk – particularly reducing reliance on a single product line or market – as the second most important factor in considering transactions. Respondents also pointed to potential operational synergies and increased financial capacity as relevant motivations for pursuing deals. Economies of scale were ranked fifth among the factors listed, while eliminating competition was viewed as the least important driver, suggesting that respondents see consolidation primarily as a way to adjust business models and balance sheets rather than to remove rivals. The research points to a more demanding operating environment shaped by regulatory complexity, investment market volatility, and higher technology and data requirements. Within that context, some insurers appear to be reassessing whether existing standalone structures and asset bases are sufficient.
