Prosperity Bancshares, a regional financial holding company, completed the merger with LegacyTexas Financial Group, the holding company of LegacyTexas Bank for $2.1bn. Immediately after the merger, LegacyTexas Bank was merged into Prosperity Bank and LegacyTexas' business will operate as Prosperity Bank dba LegacyTexas Bank until systems conversion, which is scheduled for early June 2020. Upon conversion, the combined bank will operate as Prosperity Bank. “This merger creates one of the largest Texas-based banks by deposits and makes Prosperity Bank a dominant player in the vibrant markets of Houston and Dallas/Fort Worth. We look forward to the opportunities we have as a combined organization," David Zalman, Prosperity CEO.