Marsh McLennan Agency Acquires Seitz Insurance Agency

Marsh McLennan Agency Acquires Olympic Insurance Agency

August 1, 2025

Financial Services

Marsh McLennan Agency (MMA), a business of Marsh, has acquired Olympic Insurance Agency, an independent insurance agency based in Simi Valley, California. Olympic's team, including principals Don and Bob Barberie, will remain in place as MMA expands its capabilities and client coverage in Southern California, particularly in real estate and manufacturing risk solutions.

Marsh McLennan Agency Acquires Clark Insurance (including Haberman Insurance)

June 2, 2023

Insurance

Marsh McLennan Agency (MMA), a subsidiary of Marsh, has acquired Clark Insurance, a full-service independent insurance agency headquartered in Portland, Maine; the transaction also includes Haberman Insurance, which Clark acquired in 2021. The deal brings all 135 Clark employees (plus Haberman staff) into MMA and expands MMA's presence across New England with Clark's offices in Maine, New Hampshire and Massachusetts.

Marsh McLennan Agency Acquires McDonald Zaring Insurance

December 1, 2022

Insurance

Marsh McLennan Agency (MMA), a business of Marsh McLennan, has acquired McDonald Zaring Insurance, a full-service agency based in Walla Walla, Washington. All 19 McDonald Zaring employees will join MMA as part of a newly created MMA office in Walla Walla; terms were not disclosed.

Marsh McLennan Agency Acquires Steinberg & Associates, Inc.

September 1, 2022

Insurance

Marsh McLennan Agency (MMA), a subsidiary of Marsh, has acquired Steinberg & Associates, Inc., an independent insurance and employee benefits agency based in Spartanburg, South Carolina. The acquisition expands MMA's presence in South Carolina and brings Steinberg's client-focused employee health, benefits and private client services into MMA; terms were not disclosed.

Marsh & McLennan Agency (MMA) Acquires Assurance Holdings, Inc.

April 1, 2020

Insurance

Marsh & McLennan Agency LLC (MMA), the US middle-market agency subsidiary of Marsh, has acquired Schaumburg, Illinois-based Assurance Holdings, Inc. Assurance's approximately 525 colleagues will join MMA and Assurance will serve as MMA's Midwest regional headquarters; terms were not disclosed.

Marsh & McLennan Agency Acquires Dawson Insurance Agency

November 4, 2015

Insurance

Marsh & McLennan Agency LLC (MMA) has acquired Dawson Insurance Agency, a 98-year-old family-owned insurance agency based in Fargo, North Dakota. Dawson Insurance generates $10 million in revenue and has 58 employees who will join MMA's upper Midwest region; the deal gives MMA entry into the North Dakota market.