Matthias Kollatz-Ahnen

Berliner Wasserbetriebe supplies drinking water. Its core task is to supply residents of Berlin and the surrounding area with drinking water and dispose of their wastewater. It operates water works and also provides sewerage services. Not only does it perform conventional wastewater treatment at its wastewater treatment works, but has also equipped the majority with biological nutrient elimination facilities, to maintain the quality of Berlin's lakes and rivers. The company was founded in 1992 and is headquartered in Berlin, Germany.

Vivantes-Netzwerk für Gesundheit GmbH is a hospital operating company based in Berlin, Germany. The German company operates hospitals and is ultimately controlled by the City of Berlin. The CEO of the company is Andrea Grebe.

Investitionsbank Berlin engages in business development, and housing and urban development activities. It offers loan-based and investment-oriented forms of financing. It also provides loans for landlords and investors that are used for new construction, and to purchase properties or for projects to modernize and refurbish existing properties. The company was founded in 1924 and is headquartered in Berlin, Germany.

Berlinovo Immobilien GmbH engages in the management of assets, properties, and funds. Its property portfolio includes office buildings, do-it-yourself centers, warehouses, shopping centers, supermarkets, clinics, senior homes, hotels, factories, and rental apartments. The company was founded in 2006 and is headquartered in Berlin, Germany.