California-based Alliant Insurance Services, a specialty insurance brokerage firm, has acquired T&H Group, an insurance brokerage company based in New York.

T&H Group, formerly known as Tanenbaum-Harber Co, changed its name to T&H Group in 2010. The brokerage firm primarily targets upper middle market clients throughout the eastern region of the country.

T&H Group offers full-service insurance services through its operating subsidiaries that include T&H Brokers, T&H Benefits, RFF & Associates, and Construction Insurance Corporation and Surety Associates (CIC/SA).

T&H has 242 employees in offices in nine states: New York, New Jersey, Connecticut, Massachusetts, Pennsylvania, Maryland, Illinois, Florida, and California.

T&H Group, headed by CEO Walter Harris, will serve as vice chairman of Alliant and he will become a member of Alliant’s senior management team. Harris has been with T&H for over 30 years.

Other key executive officers of T&H are Richard Ferrucci, with over 40 years of experience in surety and construction insurance industry, and Richard Fleder, with 35 years of experience in the employee benefits industry. Fleder has served on the boards and advisory councils of numerous insurance carriers.

Alliant chairman and CEO Tom Corbett said the acquisition of such a well-established and highly respected insurance brokerage company as T&H Group represents tremendous opportunity for Alliant Insurance Services.

Harris said that with Alliant as partner, T&H Group will be able to leverage the combined knowledge and expertise with improved market positioning to deliver better products and services at better costs than the competition.

Terms of the acquisition were not disclosed.