Originally established in 1969 under the name Bankenunion AG, it is a fully owned subsidiary of Helaba and thus a member of the Sparkassen-Finanzgruppe for which it serves as the group's main private bank.
In 1968, DSK Bank transferred its branches in the Hamburg area to Nordbank AG, a joint venture with the local Neue Sparkasse von 1864 [de].
In 2010, it sold it to LB Swiss Privatbank AG, a private bank originally founded in 1955, purchased by BayernLB in 1991 then in stages by Helaba in 2001 and 2010.
The German entity, Frankfurter Bankgesellschaft (Deutschland) AG, has established branches in Düsseldorf in 2018 and Hamburg in 2019, and offices in Munich in 2018 and Saarbrücken in 2021.
It also owns a multi-family office,[2] the only such service provider in the Sparkassen-Finanzgruppe, and controls IMAP M&A Consultants AG, a mergers and acquisitions advisory firm that targets medium-sized companies.