US distributor CRC Group has entered into a definitive agreement to acquire Atrium Underwriting Group. Atrium will retain its brand name and independence under the leadership of its current management team within the CRC Group.

Atrium manages Lloyd’s Syndicate 609 and writes specialty insurance and reinsurance across property, casualty, and specialty business groups. The company generated US$1.3bn in GWP in 2024 and will continue to operate independently post-closing.

John Fowle, CEO of Atrium, said: “The confidence shown by CRC Group in Atrium is a testament to the strong business and brand that has been created since the company’s inception in 1984. As we move to the next phase of Atrium’s history, we are poised to deliver our strategic transformation agenda, one that builds on our team’s distinctive culture and Atrium’s long-standing reputation for delivering a consistent return on capital to its third-party capital providers.”

Dave Obenauer, CRC Group CEO, added: “We are thrilled to welcome the Atrium team to the Group. As our first investment outside of North America, this marks an exciting and significant milestone in our company’s evolution. Atrium’s well-established reputation, disciplined underwriting culture, and specialized product offerings align perfectly with our vision for strategic growth.”