The Texas Commerce Bank (officially Texas Commerce Bank N.A., with its parent bank holding company known as Texas Commerce Bancshares, Inc.) was a Texas-based bank acquired by Chemical Banking Corporation of New York in May 1987. The acquisition of Texas Commerce Bank represented the largest interstate banking merger in history at the time with a purchase price of $1.2 billion. The bank had its headquarters in what is now the JPMorgan Chase Building (formerly Gulf Building) in downtown Houston, Texas.