Mariner Completes Acquisition of Overland Park-based Cowell Insurance Services

Posted March 9, 2026

Mariner announced it has acquired Cowell Insurance Services, an Overland Park-based property and casualty insurance provider.

The transaction adds business and individual risk advisory solutions to Mariner’s service offering, according to a release. The deal was officially completed on March 4.

Terms of the transaction were not disclosed.

Founded in 2009 by Lance Cowell, CIS specializes in commercial and personal property and casualty coverage, underwriting strategy, claims advocacy and risk management. As part of the acquisition, CIS’s 18-person team will be operating under the Mariner brand.

“We wanted a partner who shares those values. Joining Mariner allows us to keep doing what we do best while creating new opportunities and reinforcing support for our clients for years to come,” president and CEO of Cowell Insurance Services, Cowell said in the release.

This marks Mariner’s third major acquisition of the year, following its dual purchase of First National Advisors, LLC and Strava Wealth in January. Additionally, Marincer Independent, the Overland Park company’s independent advisory channel, closed its acquisition of Alinity Wealth Management, a $275 million firm, also in January.

“As we continue to grow, our focus is on building a firm that can truly meet clients wherever their needs take them,” Marty Bicknell, President and CEO of Mariner, said in the release. “Property and casualty is a natural extension of the work we already do—helping those we serve protect what they’ve worked so hard to build.”