Berkley One (a Berkley Company)

Berkley One is a modern personal insurance carrier dedicated to high-net-worth and affluent individuals and families. Founded in 2017 as a specialized personal lines brand within W. R. Berkley Corporation -- a Fortune 500 insurance holding company founded in 1967 -- Berkley One was built from the ground up to serve sophisticated insurance buyers with complex coverage needs.

The company writes personal lines coverage across approximately 29 US states and Washington DC, distributing exclusively through independent agents and brokers. Berkley One positions itself as a service-first carrier: clients receive a named account executive for personal service, and agents have access to a dedicated portal and support team.

Berkley One operates as one of 50+ specialized operating units within W. R. Berkley Corporation (NYSE: WRB), which reported USD 12.7 billion in net premiums written in 2025. Being part of a well-capitalized parent provides Berkley One with strong financial backing while maintaining the agility of a focused specialty carrier.