The Carlyle Group to Acquire NSM Insurance Group from White Mountains

New Mountain Capital Acquires NSM Insurance Group's U.S. Commercial Insurance Division (rebranded Novacore)

April 15, 2025

Insurance

New Mountain Capital has completed the acquisition of NSM Insurance Group's U.S. commercial insurance division. The business — covering 15 niche insurance programs and NSM Insurance Brokers — will operate as an independent specialty commercial MGA (rebranded Novacore) to accelerate growth, innovation and scale under New Mountain's backing.

White Mountains Acquires Majority Interest in Ark Insurance Holdings

October 1, 2020

Insurance

White Mountains Insurance Group agreed to invest $605 million of equity (at a $300 million pre-money valuation) and purchase $41 million of shares from existing owners to acquire a majority interest in Ark Insurance Holdings, the parent of Ark Syndicate Management Ltd. The capital raise will give White Mountains ~72% ownership at closing (63% fully diluted), with a commitment to contribute up to an additional $200 million in 2021 to substantially expand Ark's Lloyd's capacity, convert its Bermuda reinsurance entity, and hire underwriting talent.

NSM Insurance Group Acquires Acquis Insurance Management

March 29, 2023

Insurance

NSM Insurance Group has agreed to acquire Acquis Insurance Management, a UK-based specialist provider of insurance programs to the asset finance market. The deal (subject to customary regulatory approvals) will expand NSM's footprint in Europe and the U.S. and provide Acquis with additional capacity and resources to accelerate growth after its 2019 MBO backed by Dunedin LLP.

NSM Insurance Group Acquires Strategic Underwriters International

June 4, 2024

Insurance

NSM Insurance Group has completed the acquisition of Strategic Underwriters International (SUI), a Doylestown, Pennsylvania-based managing general agent (MGA) and leader in the facultative casualty reinsurance market. The deal expands NSM's specialty insurance capabilities in facultative casualty reinsurance and aims to leverage NSM's resources — including product development, technology systems and AI initiatives — to grow SUI's underwriting platform.

NSM Insurance Group Acquires Shield Commercial Insurance Services

July 10, 2023

Insurance

NSM Insurance Group has acquired Shield Commercial Insurance Services, a Palm Desert-based underwriting business specializing in insurance for small and mid-sized contractors. The acquisition expands NSM’s portfolio of specialty insurance programs and aims to accelerate Shield’s growth through NSM’s national agent distribution and expanded geographic footprint.

NSM Insurance Group Acquires ISO Student Health Insurance

July 30, 2024

Insurance

NSM Insurance Group, a specialty insurance provider headquartered in Conshohocken, Pennsylvania, has acquired ISO Student Health Insurance, a New York–based brokerage and plan administrator focused on health and travel insurance for international students. The acquisition expands NSM’s portfolio of travel and student insurance brands and leverages ISO’s direct-to-consumer digital enrollment platform and university distribution relationships to accelerate growth.