FirstMerit Bank was a regional bank based in the United States, primarily serving customers in Ohio and Michigan. Founded in 1845, it offered a range of financial services, including personal banking, business banking, and wealth management. In 2016, FirstMerit Bank was acquired by Huntington Bancshares, a larger financial institution. This merger allowed Huntington to expand its footprint and enhance its service offerings, while FirstMerit customers transitioned to Huntington services.