Ruth Werhahn
Human Resources Officer at VONOVIA SE
Network origin in Ruth Werhahn first degree
| Entity | Entity type | Industry | |
|---|---|---|---|
20
| Public Company | Real Estate Development | 20 |
TÜV Rheinland AG
 TÜV Rheinland AG Miscellaneous Commercial ServicesCommercial Services TÜV Rheinland AG engages in the provision of technical services. It specializes in the testing, monitoring, development, promotion, and certification of products, equipment, processes, management systems, and services. The firm also qualifies experts and provides training for various industrial sectors. In addition, it engages in the research on and development of new technologies, development of new safety standards, as well as implementation of scientific research projects. The company was founded in 1872 and is headquartered in Cologne, Germany.
19
| Subsidiary | Miscellaneous Commercial Services | 19 |
Wilh. Werhahn KG
 Wilh. Werhahn KG MiscellaneousMiscellaneous Wilh. Werhahn KG operates as a holding company, which operates in the Building Materials, Consumer Goods, and Financial Services divisions. The Building Materials division offers products for road construction, roofs, and façades. The Consumer Goods division focuses on kitchen and body care items. The Financial Services division includes leasing, factoring, and vehicle financing. The company was founded by Peter Wilhelm Werhahn in 1841 and is headquartered in Neuss, Germany.
13
| Private Company | Miscellaneous | 13 |
LVM Pensionsfonds-AG
 LVM Pensionsfonds-AG Investment ManagersFinance Part of LVM Landwirtschaftlicher Versicherungsverein Münster AG, LVM Pensionsfonds-AG provides insurance and pension funding services. The company is based in Muenster, Germany.
7
| Subsidiary | Investment Managers | 7 |
LVM Lebensversicherungs-AG
 LVM Lebensversicherungs-AG Life/Health InsuranceFinance Part of LVM Landwirtschaftlicher Versicherungsverein Münster AG, LVM Lebensversicherungs-AG provides life insurance products and services. The company is based in Muenster, Germany. The CEO of the German company is Mathias Kleuker.
6
| Subsidiary | Life/Health Insurance | 6 |
AMD TÜV Arbeitsmedizinische Dienste GmbH TÜV Rheinland Group
 AMD TÜV Arbeitsmedizinische Dienste GmbH TÜV Rheinland Group Miscellaneous Commercial ServicesCommercial Services Part of TÜV Rheinland Berlin Brandenburg Pfalz eV, AMD TÜV Arbeitsmedizinische Dienste GmbH TÜV Rheinland Group is a company that operates as laboratories, testing centers, and training centers. AMD TÜV Arbeitsmedizinische Dienste GmbH TÜV Rheinland Group is based in Berlin, Germany. Norbert Wieneke has been the CEO of the German company since 2019.
3
| Subsidiary | Miscellaneous Commercial Services | 3 |
E.ON Country Hub Germany GmbH
 E.ON Country Hub Germany GmbH Electric UtilitiesUtilities Part of E.ON SE, E.ON Country Hub Germany GmbH provides electricity services. The company is based in Berlin, Germany. The CEOs of the German company are Ruth Werhahn, Peter André Simon, Michael Witt.
2
| Subsidiary | Electric Utilities | 2 |
TÜV Rheinland Service GmbH
 TÜV Rheinland Service GmbH Miscellaneous Commercial ServicesCommercial Services Part of TÜV Rheinland Berlin Brandenburg Pfalz eV, TÜV Rheinland Service GmbH is a German company that provides business consulting services. The company is based in Cologne, Germany. The CEOs are Michael Fübi, Ruth Werhahn. The company was founded in 2001.
1
| Subsidiary | Miscellaneous Commercial Services | 1 |
Chart of Companies connected to the second degree
Multi-company connection
Companies connected to Ruth Werhahn via their personal network
| Company | Sector | Related people | Main position |
|---|---|---|---|
TÜV Rheinland Kraftfahrt GmbH
 TÜV Rheinland Kraftfahrt GmbH Miscellaneous Commercial ServicesCommercial Services Part of TÜV Rheinland Berlin Brandenburg Pfalz eV, TÜV Rheinland Kraftfahrt GmbH is a vehicle testing centre. The company is based in Cologne, Germany. The German company was founded in 1995. The CEO is Michael Fübi. | Miscellaneous Commercial Services | Director/Board Member Director/Board Member Director/Board Member Director/Board Member Director/Board Member Chief Executive Officer Director/Board Member Director/Board Member Director/Board Member Director/Board Member Director/Board Member Director/Board Member Director/Board Member Director/Board Member | |
| DEUTSCHE WOHNEN SE | Real Estate Development | Chairman Director of Finance/CFO Chief Executive Officer Director/Board Member Director of Finance/CFO Director/Board Member Director/Board Member | |
| GSW IMMOBILIEN AG | Real Estate Development | Director/Board Member Chairman Chief Executive Officer Chairman Corporate Officer/Principal | |
TÜV Rheinland Berlin Brandenburg Pfalz eV
 TÜV Rheinland Berlin Brandenburg Pfalz eV Miscellaneous Commercial ServicesCommercial Services TÜV Rheinland Berlin Brandenburg Pfalz eV supplies technical services. It offers advertising, developing, promoting, examining, and certifying solutions. The firm provides services such as operation of plants, equipment, construction and systems, stationery and mobile vehicle inspection, and car services and appraisal. The company was founded in 2003 and is headquartered in Cologne, Germany. | Miscellaneous Commercial Services | Chief Executive Officer Director/Board Member Chief Executive Officer Chairman Director/Board Member | |
| BUWOG GROUP GMBH | Real Estate Development | Chairman Chief Executive Officer Chairman Director/Board Member | |
Eisenbahn-Siedlungs-Gesellschaft Berlin mbH
 Eisenbahn-Siedlungs-Gesellschaft Berlin mbH Real Estate DevelopmentFinance Part of Vonovia SE, Eisenbahn-Siedlungs-Gesellschaft Berlin mbH is a company that leases and manages residential and commercial real estate properties. Eisenbahn-Siedlungs-Gesellschaft Berlin mbH is based in Berlin, Germany. The CEOs of the German company are Konstantina Kanellopoulos, Lars Urbansky. | Real Estate Development | Chairman Chief Executive Officer Chairman | |
DW Pflegeheim Meckenheim Grundstücks GmbH
 DW Pflegeheim Meckenheim Grundstücks GmbH Real Estate DevelopmentFinance Part of Vonovia SE, DW Pflegeheim Meckenheim Grundstücks GmbH is a real estate company based in Berlin, Germany. Founded in 2013, the German company engages in buying and selling of land, buildings and flats. | Real Estate Development | Director/Board Member Director/Board Member Director/Board Member | |
Bundesverband der Deutschen Energie und Wasserwirtschaft eV
 Bundesverband der Deutschen Energie und Wasserwirtschaft eV Gas DistributorsUtilities Bundesverband der Deutschen Energie und Wasserwirtschaft eV supplies and generates gas, electricity and bio power. The private company is based in Berlin, Germany. | Gas Distributors | President Director/Board Member Chief Executive Officer | |
LVM Krankenversicherungs-AG
 LVM Krankenversicherungs-AG Life/Health InsuranceFinance Part of LVM Landwirtschaftlicher Versicherungsverein Münster AG, LVM Krankenversicherungs-AG provides health insurance services. The company is based in Muenster, Germany. The CEO of the German company is Mathias Kleuker. | Life/Health Insurance | Director/Board Member Chairman Chief Executive Officer | |
Vonovia Technischer Service Süd GmbH
 Vonovia Technischer Service Süd GmbH HomebuildingConsumer Durables Part of Vonovia SE, Vonovia Technischer Service Süd GmbH is a car sharing service called vonovia mobil. The company is based in Dresden, Germany. The CEOs are Arnd Fittkau, Konstantina Kanellopoulos, Olaf Butzmann. The German company was founded in 1994. | Homebuilding | Chief Executive Officer Chief Executive Officer | |
QUARTERBACK Immobilien AG
 QUARTERBACK Immobilien AG Real Estate DevelopmentFinance QUARTERBACK Immobilien AG engages in the holding and management of participating interests in firms. It also establishes and acquires businesses, as well as takeover their management. The company was founded on June 19, 2018 and is headquartered in Leipzig, Germany. | Real Estate Development | Director/Board Member Director/Board Member | |
Vonovia Operations GmbH
 Vonovia Operations GmbH Real Estate DevelopmentFinance Part of Vonovia SE, Vonovia Operations GmbH is a German company that engages in the management of real estate properties. The company is based in Bochum, Germany. The CEOs are Arnd Fittkau, Konstantina Kanellopoulos, Norbert Rieger. The company was founded in 2016. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
| CONWERT IMMOBILIEN INVEST SE | Real Estate Development | Chairman Director/Board Member | |
Eisenbahn-Wohnungsbaugesellschaft Köln mbH
 Eisenbahn-Wohnungsbaugesellschaft Köln mbH Real Estate DevelopmentFinance Part of Vonovia SE, Eisenbahn-Wohnungsbaugesellschaft Köln mbH is a company based in Bochum, Germany. The CEOs of the German company are Gerald Klinck, Klaus Freiberg, Mario Marcel Stamerra. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Institut der deutschen Wirtschaft Köln eV
 Institut der deutschen Wirtschaft Köln eV Miscellaneous Commercial ServicesCommercial Services Institut der deutschen Wirtschaft Köln eV engages in the provision of economic and social research services. The firm prepares trends, policy paper, analysis, studies, reports, short reports, and external publications. It focuses on labor market, demographics, digitization, income and wealth, financial and social policy, financial markets and monetary policy, real estate markets, international economy, industrial relations, environment and energy, companies, behavioral economics and business ethics, growth and business cycle, as well as education and skilled workers. The company is headquartered in Cologne, Germany. | Miscellaneous Commercial Services | Chief Executive Officer Director/Board Member | |
BWG Frankfurt am Main Bundesbahn-Wohnungsgesellschaft mbH
 BWG Frankfurt am Main Bundesbahn-Wohnungsgesellschaft mbH Real Estate DevelopmentFinance Part of Vonovia SE, BWG Frankfurt am Main Bundesbahn-Wohnungsgesellschaft mbH is a company that leases residential properties, residential buildings, and apartments. BWG Frankfurt am Main Bundesbahn-Wohnungsgesellschaft mbH is based in Frankfurt, Germany. The CEOs of the German company are Gerald Klinck, Klaus Freiberg, Mario Marcel Stamerra. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Deutsche Annington Holdings Zwei GmbH
 Deutsche Annington Holdings Zwei GmbH Financial ConglomeratesFinance Part of Vonovia SE, Deutsche Annington Holdings Zwei GmbH is a company based in Bochum, Germany. The CEOs are Arnd Fittkau, Klaus Freiberg, Röder von Diersburg. The German company was founded in 2007. | Financial Conglomerates | Chief Executive Officer Chief Executive Officer | |
GAGFAH Acquisition 1 GmbH
 GAGFAH Acquisition 1 GmbH Real Estate DevelopmentFinance Part of Vonovia SE, GAGFAH Acquisition 1 GmbH is a company based in Bochum, Germany. The CEOs are Gerald Klinck, Klaus Freiberg, Mario Marcel Stamerra. The German company was founded in 2016. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
GAGFAH GmbH
 GAGFAH GmbH HomebuildingConsumer Durables GAGFAH GmbH builds and manages an apartment that are suitable for large groups. It operates a rented flat and condominiums. The company was founded on April 1, 2017 and is headquartered in Bochum, Germany. | Homebuilding | Chief Executive Officer Chief Executive Officer | |
| IMMOFINANZ AG | Real Estate Development | Chief Operating Officer Director/Board Member | |
| RWTH Aachen University | College/University | Undergraduate Degree Undergraduate Degree | |
conwert Deutschland GmbH
 conwert Deutschland GmbH Real Estate DevelopmentFinance Part of Vonovia SE, conwert Deutschland GmbH is a German company that provides real estate services. The company is based in Bochum, Germany. The CEOs of the company are Klaus Freiberg, Sebastian Jung. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
| Universität Stuttgart | College/University | Undergraduate Degree Corporate Officer/Principal | |
Tempelhofer Feld GmbH für Grundstücksverwertung
 Tempelhofer Feld GmbH für Grundstücksverwertung Real Estate DevelopmentFinance Part of Vonovia SE, Tempelhofer Feld GmbH für Grundstücksverwertung is a German company that provides real estate services. The company is based in Bochum, Germany. The CEOs of the company are Arnd Fittkau, Rolf Buch, Sebastian Jung. Tempelhofer Feld GmbH für Grundstücksverwertung was acquired by IMMOFINANZ AG, a PUB of CPI Property Group SA from CERTA Immobilienverwaltung und Handels GmbH & Co. on May 03, 2005. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Vonovia Technischer Service Nord GmbH
 Vonovia Technischer Service Nord GmbH Real Estate DevelopmentFinance Part of Vonovia SE, Vonovia Technischer Service Nord GmbH leases, manages and maintains residential real estate properties. The company is based in Essen, Germany. The CEOs of the German company are Rolf Buch, Klaus Freiberg, Konstantina Kanellopoulos. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Eisenbahn-Wohnungsbau-Gesellschaft Karlsruhe GmbH
 Eisenbahn-Wohnungsbau-Gesellschaft Karlsruhe GmbH Real Estate DevelopmentFinance Part of Vonovia SE, Eisenbahn-Wohnungsbau-Gesellschaft Karlsruhe GmbH is a German company that provides real estate services. The company is based in Bochum, Germany. The CEOs of the company are Dirk Brunnert, Klaus Freiberg, Michael Klöpsch. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Bundesbahn-Wohnungsbaugesellschaft Kassel GmbH
 Bundesbahn-Wohnungsbaugesellschaft Kassel GmbH Real Estate DevelopmentFinance Part of Vonovia SE, Bundesbahn-Wohnungsbaugesellschaft Kassel GmbH is a German company that provides real estate brokerage services. The company is based in Bochum, Germany. The CEOs of the company are Gerald Klinck, Klaus Freiberg, Ulrich Schiller. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Nileg Norddeutsche Immobiliengesellschaft mbH
 Nileg Norddeutsche Immobiliengesellschaft mbH Real Estate DevelopmentFinance Part of Vonovia SE, NILEG Norddeutsche Immobiliengesellschaft mbH is a real estate company based in Hannover, Germany. The CEOs of the German company are Ulrich Schiller, Klaus Freiberg, Rolf Buch. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
Süddeutsche Wohnen Gebäude GmbH
 Süddeutsche Wohnen Gebäude GmbH Real Estate DevelopmentFinance Part of Vonovia SE, Süddeutsche Wohnen Gebäude GmbH is a German company that provides real estate services. The company is based in Stuttgart, Germany. The CEOs are Arnd Fittkau, Frederic-Andreas Neumann, Philip Grosse. The company was founded in 2000. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
GAGFAH Asset Management GmbH
 GAGFAH Asset Management GmbH Real Estate DevelopmentFinance Part of Vonovia SE, GAGFAH Asset Management GmbH engages in mediation of residential properties, residential buildings and apartments. The company is based in Bochum, Germany. The CEOs of the German company are Walter Sprenger, Arnd Fittkau, Konstantina Kanellopoulos. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
GBH Acquisition GmbH
 GBH Acquisition GmbH Financial ConglomeratesFinance GBH Acquisition GmbH is based in Bochum, Germany. The CEOs are Arnd Fittkau, Frederic-Andreas Neumann, Philip Grosse. The German company was founded in 2016. Part of Vonovia SE, GBH Acquisition GmbH operates as an acquisition vehicle for GAGFAH SA. | Financial Conglomerates | Chief Executive Officer Chief Executive Officer | |
BUWOG - Lübeck Hanse I GmbH
 BUWOG - Lübeck Hanse I GmbH Real Estate DevelopmentFinance Part of Vonovia SE, BUWOG - Lübeck Hanse I GmbH is a German company that provides real estate services. The company is based in Bochum, Germany. The CEOs are Arnd Fittkau, Dirk Brunnert, Philip Grosse. The company was founded in 1974. | Real Estate Development | Chief Executive Officer Chief Executive Officer | |
BUWOG - Bauen und Wohnen GmbH
 BUWOG - Bauen und Wohnen GmbH HomebuildingConsumer Durables BUWOG - Bauen und Wohnen GmbH provides construction services. The company specializes in public and private buildings, including apartment construction services. The company was founded in 1951 and is headquartered in Vienna, Austria. | Homebuilding | Chief Executive Officer Chairman | |
| University of Karlsruhe | College/University | Undergraduate Degree Corporate Officer/Principal | |
RWE Supply & Trading GmbH
 RWE Supply & Trading GmbH Alternative Power GenerationUtilities Part of RWE AG, RWE Supply & Trading GmbH is a German company that produces clean, secure, and affordable electricity while pursuing a clear goal of reducing CO2 emissions. The company is based in Essen, Germany. The company is also advancing storage and energy technologies globally. | Alternative Power Generation | Chairman Chairman | |
envia Mitteldeutsche Energie AG
 envia Mitteldeutsche Energie AG Electric UtilitiesUtilities envia Mitteldeutsche Energie AG operates as an investment holding company which focuses on the electricity distribution, gas, water supply, and telecommunications sectors. The company was founded in 1999 and is headquartered in Chemnitz, Germany. | Electric Utilities | Chairman Director/Board Member | |
| University of Hamburg | College/University | Undergraduate Degree Graduate Degree | |
| Universität zu Köln | College/University | Undergraduate Degree Doctorate Degree | |
Süwag Energie AG
 Süwag Energie AG Alternative Power GenerationUtilities Süwag Energie AG distributes electricity, natural gas and heat. It offers these products and its related services to both private and corporate clients. The company was founded in 2001 and is headquartered in Frankfurt, Germany. | Alternative Power Generation | Chairman Director/Board Member | |
| Ludwig-Maximilians-Universität München | College/University | Undergraduate Degree Undergraduate Degree | |
| RWE AG | Electric Utilities | Chief Executive Officer Corporate Officer/Principal | |
TÜV Rheinland Industrie Service GmbH
 TÜV Rheinland Industrie Service GmbH Miscellaneous Commercial ServicesCommercial Services Part of TÜV Rheinland Berlin Brandenburg Pfalz eV, TÜV Rheinland Industrie Service GmbH is a company based in Cologne, Germany. The German company specializes in functional safety and offers assessments, certifications, and trainings to improve functional safety and reduce risks. Contact them now to learn more. | Miscellaneous Commercial Services | Director/Board Member Director/Board Member | |
| RWE Turkey Holding AS | Director/Board Member Director/Board Member | ||
| FORTUM OYJ | Alternative Power Generation | Director of Finance/CFO Director/Board Member | |
| EON SE | Electric Utilities | Director/Board Member Chief Executive Officer | |
E.ON Kundsupport Sverige AB
 E.ON Kundsupport Sverige AB Miscellaneous Commercial ServicesCommercial Services Part of E.ON SE, E.ON Kundsupport Sverige AB engages in the operation of a call center. The company is based in Malmö, Sweden. Leonhard Birnbaum has been the CEO of the Swedish company since 2021. | Miscellaneous Commercial Services | Director/Board Member Chief Executive Officer | |
| University of St. Gallen | College/University | Masters Business Admin Masters Business Admin |
Statistics
International
| Germany | 43 |
| Austria | 5 |
| Turkey | 2 |
| Finland | 2 |
| Sweden | 2 |
Sectoral
| Finance | 25 |
| Utilities | 10 |
| Consumer Services | 8 |
| Commercial Services | 6 |
| Consumer Durables | 5 |
Operational
| Director/Board Member | 237 |
| Chief Executive Officer | 206 |
| Chairman | 95 |
| Corporate Officer/Principal | 86 |
| Independent Dir/Board Member | 22 |
Most connected contacts
| Insiders | |
|---|---|
| Arnd Fittkau | 87 |
| Rolf Buch | 54 |
| Rolf Martin Schmitz | 40 |
| Leonhard Birnbaum | 29 |
| Vitus Eckert | 23 |
| Daniel Joachim Riedl | 22 |
| Detlef Bierbaum | 21 |
| Dieter Spath | 20 |
| Hildegard Müller | 19 |
| Philip Grosse | 18 |
| Clara-Christina Streit | 17 |
| Tiina Marjukka Tuomela | 15 |
| Olaf Weber | 14 |
| Wolfgang Klein | 13 |
| Franz-Josef Holzenkamp | 13 |
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