Chinook Insurance Group Acquired by Relation Insurance Services — Financial Services M&A

Relation Insurance Services, a strategic insurance brokerage, has acquired the assets of Seattle-based Chinook Insurance Group in a bolt-on transaction. Financial terms were not disclosed. The deal is designed to expand Relation’s footprint in the Pacific Northwest while adding niche marine and specialty insurance capabilities tied to Chinook’s commercial-focused book, including coverage solutions for subsea and aquaculture clients.

Chinook’s expertise centers on complex, specialized risks that often require bespoke program structures and placement through specialty intermediaries, including in the E&S market. Marine and aquaculture exposures typically involve specialized vessels, equipment, and contract arrangements that may fall outside standard carrier appetites, aligning with broader US industry trends toward specialty distribution, delegated authority, and increased use of the E&S channel for nonstandard commercial business.

Management is expected to remain in place following the acquisition, with Chinook CEO Christopher Trainer continuing in a leadership role to support integration. Relation’s stated rationale is to leverage Chinook’s subsea, aquaculture, and specialty liability know-how alongside its nationwide carrier relationships to broaden solutions for commercial clients. The transaction was announced in March 2026; no closing date was provided.