Martin Köppen

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.

Gruner + Jahr Deutschland GmbH publishes printed and digital media products. The company distributes premium magazines under the STERN, GEO, BRIGITTE, ESSEN & TRINKEN, SCHÖNER WOHNEN, CHEFKOCH, BARBARA, BEEF, and 11FREUNDE brands. It also operates the international digital marketing platform AppLike. The company was founded by John Jahr, Sr., John Jahr, Gerd Bucerius, and Richard Gruner on June 30, 1965 and is headquartered in Hamburg, Germany.

Part of BDO LLP, BDO AG Wirtschaftsprüfungsgesellschaft is a company based in Hamburg, Germany. The German company provides various services such as Wirtschaftsprüfung, prüfungsnahe Dienstleistungen, Advisory, and more. BDO AG Wirtschaftsprüfungsgesellschaft advises and audits companies in the logistics industry and maritime economy. The company helps businesses navigate the new regulations of the FISG, which bring significant changes for companies of public interest. BDO's experts also assist companies in achieving sustainable corporate governance and meeting the increasing number of legal requirements related to sustainability. The CEO of the company is Holger Otte.

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.

Part of Exxon Mobil Corp., ExxonMobil Central Europe Holding GmbH explores and produces petroleum products. The company is based in Hamburg, Germany. The German company was founded in 1999. The CEO is Florian Barsch.

The Nielsen Co. BV engages in the provision of information and measurement solutions. It delivers critical media and marketing information, analytics, and industry expertise. The company was founded by Arthur Charles Nielsen Sr. in 1923 and is headquartered in Diemen, the Netherlands.

Part of Praktiker AG, Baumarkt Praktiker Deutschland GmbH is a German company that retails paints, construction, and DIY products. The company is based in Hamburg, Germany.

Hamburger Wasserwerke GmbH is a company that provides drinking water and wastewater services in Hamburg, Germany. The company is a subsidiary of the City of Hamburg and is based in Hamburg, Germany. The company offers access to their customer and business portals for both private households and businesses managing multiple units. The CEO of the company is Nathalie Leroy.

HHLA Container Terminal Tollerort GmbH provides container handling and terminal management services. It offers truck handling and delivery, storage and warehousing, cargo handling, port and vessel management, and distribution logistics services. The company was founded in 1934 and is headquartered in Hamburg, Germany.

HVV Hamburger Verkehrsverbund Gesellschaft mbH provides public transportation services in and around Hamburg, DE. The German company offers a range of transportation options, including bus, train, and ferry services. HVV Plus is a mobile app that provides information and ticketing services for these transportation options. The company is ultimately controlled by the City of Hamburg. The CEOs of the company are Lutz Aigner, Dietrich Hartmann.

Part of Exxon Mobil Corp., ExxonMobil Chemical Central Europe GmbH sells petroleum based products. The company is based in Hamburg, Germany. The CEO of the German company is Florian Barsch.

Part of Jaarbeurs Holding BV, Jaarbeurs BV is a Dutch company that provides magazine services. The company is based in Utrecht, Netherlands. The company was founded in 1916. Jeroen van Hooff has been the CEO of the company since 2022.

J.J. Darboven Holding AG & Co. KG is a holding German company that operates subsidiaries producing coffee. The company is based in Hamburg, Germany and has subsidiaries in Germany and Austria. The private company was founded in 1996 and the CEO is Albert Darboven.

Elbphilharmonie Hamburg Bau GmbH & Co. KG constructs residential and commercial buildings. The private company is based in Hamburg, Germany.

Gastwerk Hotel Hamburg GmbH & Co. KG is a hotel located in Hamburg, Germany. The German company offers various amenities such as rooms, dining options, spa services, and event spaces. The private company was founded in 1896 and the CEO is Kai Hollmann.

Hamburgische Investitions- und Förderbank provides banking services. The company is based in Hamburg, Germany and ultimately controlled by the City of Hamburg. The CEO of the German company is Ralf Sommer.

Hamburg Verkehrsanlagen GmbH provides traffic services and is ultimately controlled by the City of Hamburg. The company is based in Hamburg, Germany. The CEOs of the German company are Harald Dinger, Volker Rech.

4 Free AG provides online fund brokerage services. It offers online financial services, and processes customer requests and new client accounts, including savings plans and funds. The company was founded in 2006 and is headquartered in Hamburg, Germany.

Life Science Nord Management GmbH is a regional industry network for medical technology, biotechnology, and pharmaceuticals in the Hamburg and Schleswig-Holstein regions. The private company is based in Hamburg, Germany. The cluster connects companies, universities, and research institutions.

25hours Hotel Co. GmbH owns and operates hotels and restaurants. The company was founded by Christoph Hoffmann, Stephan Gerhard, Ardi Goldman, and Kai Hollman in 2005 and is headquartered in Hamburg, Germany.

Gastwerk-Hotel Hamburg Verwaltungs GmbH owns and operates hotels. Gastwerk-Hotel Hamburg Verwaltungs GmbH is based in Hamburg, Germany. The German company was founded in 1999. The CEO is Kai Hollmann.

Hiw Hamburg Invest Wirtschaftsfoerderungsgesellschaft mbH provides investment services. The private company is based in Hamburg, Germany.

Altes Hafenamt Hamburg GmbH & Co. KG is a real estate company based in Frankfurt, Germany. Altes Hafenamt Hamburg GmbH & Co. KG engages in buying and selling of commercial premises and non-residential buildings. The German company was founded in 2017 and is led by CEOs Nikolaus Bieber and Kai Hollmann.

Hamburg Tourismus GmbH offers travel information and services for visitors to Hamburg, Germany. The company is based in Hamburg, Germany and was founded in 1989. The German company's website provides information on hotels, tickets, travel offers, events, sports, and more. The company is ultimately controlled by the City of Hamburg. The CEO is Michael Otremba.

Part of ACS Actividades de Construcción y Servicios SA, FHK Flughafen Hamburg Konsortial- und Service GmbH & Co. oHG is a web server of Hamburg Airport. The company is based in Hamburg, Germany. The CEOs of the German company are Rainer Klemmt-Nissen, Gerhard Günter Schroeder, Oliver Jensen.

Part of Deutsche Lufthansa AG, ZAL Zentrum für Angewandte Luftfahrtforschung GmbH is a technology research and development platform for civil aviation. The company is based in Hamburg, Germany. ZAL's focus is on the future of aviation, and it is the leading technological research and development platform for civil aviation in Germany. The German company was founded in 2009, and the CEO is Roland Gerhards.