White Mountains Partners Acquires Majority Interest in BaseSix Systems LLC

White Mountains Partners has acquired a majority interest in BaseSix Systems, a provider of building systems integration and aftermarket service. The acquisition aims to enable BaseSix's next chapter of growth, including opening new offices and strategic acquisitions. BaseSix simplifies building systems by transforming complex technologies into user-friendly integrated solutions. White Mountains Partners is a wholly-owned business unit of White Mountains Insurance Group, providing first institutional capital to family, founder, and entrepreneur-owned businesses.