The Andover Companies Announces Transition To Mutual Holding Company Structure

Andover, MA, January 8, 2026 – The Andover Companies, one of the Northeast’s leading mutual insurers, is pleased to announce that it has reorganized into a mutual holding company structure, effective January 1, 2026. The Plan of Reorganization was recently approved by the Massachusetts Division of Insurance and the policyholders of Merrimack Mutual Fire Insurance Company (Merrimack Mutual) and Cambridge Mutual Fire Insurance Company (Cambridge Mutual).

Under the reorganization, Merrimack Mutual was converted into a stock insurance company and re-named Merrimack Insurance Company (Merrimack), and Cambridge Mutual was converted into a stock insurance company and re-named Cambridge Insurance Company (Cambridge). Additionally, Merrimack and Cambridge have become direct, wholly-owned subsidiaries of a newly formed intermediate holding company, Merrimack Insurance Intermediate Holding Company, and indirect, wholly-owned subsidiaries of a newly formed mutual holding company, The Andover Companies, Inc. The new structure will enhance operational efficiency, support long-term competitive standing, and unlock strategic opportunities in a continually evolving marketplace.

“This Plan of Reorganization represents a pivotal moment for The Andover Companies,” said Chuck DiGrande, President and CEO. “By adopting a mutual holding company structure, we are preserving the mutual roots that have defined our organization for nearly 200 years while creating the flexibility required to continue meeting the needs of our policyholders, agents, and employees for generations to come.”

About The Andover Companies

The Andover Companies is one of the largest and longest-standing property and casualty mutual insurance groups in the Northeast, writing business across Massachusetts, Maine, New Hampshire, Rhode Island, Connecticut, New York, New Jersey, and Illinois. Our three distinct insurance companies, Merrimack, Cambridge, and Bay State Insurance Company, enable us to provide a wide range of coverage solutions and services that shield personal and commercial properties and their owners from risk. As our company approaches its 200th year in business, we are just as committed as our founders were to protecting our policyholders and continuing to build the most reliable network of local and independent insurance agents in the region. Consistently rated “A” or higher by AM Best for over a century, we display an unwavering ambition to safeguard our neighbors and communities. To learn more about our company, visit: https://www.andovercompanies.com/about-us/.

Media Contact:

Molly McQuaide
Marketing Associate
The Andover Companies
978-482-4695