Marsh McLennan Agency Acquires Seitz Insurance Agency

The acquisition expands Marsh McLennan's footprint in the Northeast region.

Apr. 7, 2026 at 4:22pm

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A minimalist, high-end studio still-life photograph featuring a stack of insurance policy documents, a pen, and a calculator arranged elegantly on a clean, monochromatic background, conceptually representing the strategic acquisition of an insurance brokerage firm.

The acquisition of Seitz Insurance Agency expands Marsh McLennan's footprint and service capabilities in the Northeast insurance market.White Plains Today

Marsh McLennan Agency, a subsidiary of global professional services firm Marsh & McLennan Companies, has announced the acquisition of Seitz Insurance Agency, an independent insurance brokerage firm based in White Plains, New York. The deal expands Marsh McLennan's presence in the Northeast and adds to its capabilities in commercial and personal insurance lines.

Why it matters

The acquisition is part of Marsh McLennan's strategy to grow its agency business through targeted acquisitions that expand its geographic reach and service offerings. Seitz Insurance has a strong reputation in the White Plains market, and the deal will allow Marsh McLennan to better serve clients in the Northeast region.

The details

Under the terms of the agreement, Seitz Insurance Agency will become part of Marsh McLennan Agency's Northeast region. Seitz Insurance's team of insurance professionals, including its president, will join Marsh McLennan Agency. The financial details of the transaction were not disclosed.

Marsh McLennan Agency announced the acquisition on April 7, 2026.

The players