Joh. Berenberg, Gossler & Co. KG, often known as Berenberg Bank or simply Berenberg, is a multinational full-service private and investment bank headquartered in Hamburg, Germany. Established in 1590 by the Flemish Berenberg family, it is the oldest merchant bank globally, with 432 years of history. The Berenberg/Gossler family was part of the ruling elite of Hanseatic merchants in the city-republic of Hamburg, with several family members serving in the city-state's government since 1735.