What Mechanics Bancorp told the SEC could break it.

Mechanics Bank's CRE, multifamily and residential real-estate loans are ~76% to California borrowers/collateral (multifamily ~38% of the total loan book), and it predominantly serves CA/WA/OR/HI — magnifying exposure to a West Coast economic or property-value downturn.

“The Company's portfolio of non-owner occupied and owner occupied commercial real estate, multifamily and residential real estate loans are primarily to borrowers in California, or are secured by real estate collateral located in California. Such loans represented 76 % of total loans in these segments as of December 31, 2025 .”

Mechanics Bancorp flags material-weakness risk in internal control over financial reporting — heightened by its September 2025 HomeStreet Bank merger and ~30% merger-driven employee turnover — that could allow undetected material misstatements.

“is a reasonable possibility that a material misstatement of the annual or interim financial statements would not be prevented or detected on a timely basis. Such material weaknesses could result in the misstatement of a substantial part or substantially all of our accounts or disclosures”

Tariff initiatives — especially on imports from Mexico, Canada and China, major trading partners for the Western US economy — could hurt Mechanics Bank's borrowers, raise costs, disrupt supply chains and dampen the regional economy it lends into.

“The trade policies and potential tariff initiatives being pursued by the U.S. government may present risks to our borrowers and the markets within which we operate, particularly with respect to the threatened imposition of additional tariffs on certain products imported from countries, such as Mexico, Canada and China, which are significant international trading partners for the economy of the Western United States.”