Regions Online Banking Help History of Regions Bank Regions Bank, which is otherwise known as Regions Financial Corporation, was formed in 1971. Its origin lies in the merger of three different Alabama banks, including the First National Bank of Montgomery, the Exchange Security Bank of Birmingham, and the First National Bank of Huntsville. This moment was rather historic for the region, as it brought together three of the oldest banks in the south. In fact, the First National Bank of Huntsville pre-dated the Civil War and was formed in 1856 in a building that had been built ...