Commerce Bancshares (NASDAQ:CBSH) has finalized its acquisition of FineMark Holdings, marking a major strategic expansion of its private banking and wealth management operations into high-growth markets.
The closing of the deal, effective January 1, 2026, brings together the Midwest banking stalwart with FineMark’s high-touch concierge wealth services.
As a result of the merger, the combined organization now oversees approximately $36 billion in total assets and $90 billion in assets under administration (AUA).
This scale positions Commerce as the 15th largest bank-managed trust company in the nation, based on pro forma data from September 30, 2025.
The transaction significantly diversifies Commerce’s geographic reach.
While the bank has long maintained a dominant presence in the Midwest, the addition of FineMark bolsters its footprint in Florida and marks its first entry into Arizona and South Carolina.
FineMark, which will now operate as "FineMark Bank & Trust, a division of Commerce Bank," currently serves approximately 2,000 affluent clients through 13 locations, including Scottsdale and Charleston.
Management has confirmed a seamless transition for existing FineMark clients, with current advisor relationships remaining intact.
Joseph Catti, the founder and CEO of FineMark, has been appointed Chairman of Commerce Trust and will continue to lead the FineMark division.
While the legal merger of FineMark National Bank & Trust into Commerce Bank is complete, the operational integration is just beginning.
Commerce plans to convert FineMark’s technical and banking systems during the second half of 2026.