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Bates White experts assist US insurance broker Arthur J. Gallagher’s successful acquisition of AssuredPartners

In late 2024, Arthur J. Gallagher & Co., the third largest US insurance broker, announced its plan to acquire AssuredPartners, the tenth largest US insurance broker, for $13.45 billion. It would be the largest sale of a US insurance broker in the history of the industry.

Bates White experts Slava Zayats and George Rozanski led economic analyses through all stages of antitrust work ranging from pre-deal antitrust risk assessment to all stages of Department of Justice’s (DOJ) review, including initial voluntary responses, Second Request support, and ultimately Second Request compliance in a record four-month period. Drs. Zayats and Rozanski, along with Tetyana Shvydko and Zenon Zabinski, submitted several sets of economic analyses to the DOJ addressing potential competitive concerns. The transaction closed in August 2025 without conditions.

Drs. Zayats, Rozanski, Shvydko, and Zabinski were supported by a team that included managers Lucy Nguyen, Lauren Christensen, and Prerna Rakheja.

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