One80 Intermediaries, a specialty insurance broker, has bought SelmanCo, a third-party administrator and broker.

SelmanCo enjoys partnerships with 55 insurance companies and maintains $300 million of annual insurance premiums.

“One80 Intermediaries is excited to expand our presence in the affinity market. We have been impressed with SelmanCo’s administrative services in the employee benefits space, and the company’s supplemental health insurance offerings provided to retired members of the United States Armed Forces and their families,” said Matthew F. Power, president of One80 Intermediaries.

Dowling Hales acted as financial advisor to SelmanCo, and Jones Day provided legal representation for the transaction. One80 Intermediaries was represented by Ropes & Gray.