Rainer Klemmt-Nissen

Hamburg Commercial Bank AG provides banking services for higher-end medium-sized companies and financing for real estate projects. Its products and solutions include financing, corporate finance/M&A advisory, financial markets and transaction banking. The company was founded on April 16, 2003 and is headquartered in Hamburg, Germany.

Hamburg Messe & Congress GmbH organizes and manages trade shows and events. The company is headquartered in Hamburg, Germany.

Hamburger Hochbahn AG provides public transport services. The firm operates subways, buses, and ferries. It also offers public transit, as well as car and bike sharing services. The company was founded in 1911 and is headquartered in Hamburg, Germany.

Flughafen Hamburg GmbH provides consulting and other services, both in the airport sector and in other fields. It operates through the following: Aviation, Ground Handling, Center Management, and Real Estate Management. The Aviation division is to maintain, ensure, and enhance safe and smooth flight operations. The Ground Handling division holds the contracts with the airlines along with the shares in ground handling service holding companies. The Center Management division includes all property rentals at Hamburg Airport, the concept and design of retail and food court areas, and the management and marketing of advertising operations. The Real Estate Management division maintains and provides the entire infrastructure for Hamburg Airport. The company was founded in 1911 and is headquartered in Hamburg, Germany.

HGV Hamburger Gesellschaft für Vermögens- & Beteiligungsmgmt is a company based in Hamburg, Germany. The CEOs of the German company are Isabella Niklas and Oliver Jensen. The company is a subsidiary of Hamburger Sparkasse and ultimately controlled by the City of Hamburg.