Marsh McLennan Agency Acquires Seitz Insurance in Montana

April 8, 2026

Marsh McLennan Agency has acquired Seitz Insurance Agency in Montana.

All employees, including David Seitz and Camila Skinner, the agency principals and co-owners, will join MMA and continue to operate out of their existing office locations.

Seitz is a Sidney, Montana-based independent agency founded in 1961. It primarily provides commercial and personal lines of insurance services to businesses and families in the region, with a specialization in agriculture, crop and energy industries. It acquired Polson, Montana-based Bishop Insurance Services in 2023, adding to its personal and business insurance offerings in the Flathead and Mission Valley area.

MMA is a business of Marsh, an international provider of risk, reinsurance and capital, people and investments, and management consulting services.

Topics Mergers & Acquisitions

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