Ralph Dommermuth
Verkställande Direktör på
UNITED INTERNET AG
Förmögenhet: 2 490 M $ per 2026-06-30
Profil
Ralph Dommermuth was the founder of Ionos SE, founded in 1988, and held the title Member-Supervisory Board from 1988 to 2018.
Mr. Dommermuth is the founder of United Internet AG, founded in 1988, and holds the title Chief Executive Officer since 1988.
Mr. Dommermuth is the founder of 1&1 AG, founded in 1997, and holds the title Chief Executive Officer since 2018.
Mr. Dommermuth is also the founder of 1&1 EDV Marketing GmbH..
Mr. Dommermuth currently serves as Chief Executive Officer at United Internet Investments Holding AG & Co KG.
Mr. Dommermuth is Chairman-Supervisory Board at 1&1 Mobilfunk GmbH since 2020.
Mr. Dommermuth is Chairman-Trustees Board at Internet Economy Foundation.
Mr. Dommermuth is Chairman-Supervisory Board at IONOS Group SE since 2023.
Mr. Dommermuth is Managing Director at Mr. Dommermuth.
Beteiligungen GmbH.
Mr. Dommermuth is Co-Managing Director at Fashion Outlet.
Grundbesitz GmbH & Co. KG.
Mr. Dommermuth is Member-Supervisory Board at 1&1 Telecommunication SE.
Former positions include Chief Executive Officer at Drillisch AG, Chairman at United Internet Media GmbH, Deputy Chairman-Supervisory Board at 1&1 Versatel GmbH, Deputy Chairman-Supervisory Board at 1&1 Versatel Deutschland GmbH, Deputy Chairman-Supervisory Board at IONOS Holding SE, Co-Managing Director at RD-II Projektentwicklungs GmbH & Co. KG, Member-Supervisory Board at Sedo Holding AG, Member-Supervisory Board at Tele Columbus AG from 2021 to 2022, Member-Supervisory Board at STRATO GmbH from 2017 to 2018, Member-Supervisory Board at Rocket Internet SE, and Member-Supervisory Board at 1&1 Mail & Media Applications SE in 2020.
Kända innehav i offentliga företag
| Företag | Datum | Antal aktier | Värdering | Värderingsdatum |
|---|---|---|---|---|
UNITED INTERNET AG 48,94 % | 2025-12-31 | 93 955 205 ( 48,94 % ) | 2 471 M $ | 2026-06-30 |
Borussia Dortmund GmbH & Co. KGaA
 Borussia Dortmund GmbH & Co. KGaA Movies/EntertainmentConsumer Services Operates a professional football club 5,03 % | 2025-06-30 | 5 552 929 ( 5,03 % ) | 19 M $ | 2026-06-30 |
Senaste nyheterna om Ralph Dommermuth
Aktiva positioner av Ralph Dommermuth
| Företag | Position | Start |
|---|---|---|
| UNITED INTERNET AG | Verkställande Direktör | 1988-01-29 |
| 1&1 AG | Verkställande Direktör | 2018-01-01 |
| IONOS GROUP SE | Ordförande | 2023-01-26 |
Internet Economy Foundation
 Internet Economy Foundation Investment Trusts/Mutual FundsMiscellaneous Operates as a internet economy foundation | Ordförande | - |
Ralph Dommermuth Beteiligungen GmbH
 Ralph Dommermuth Beteiligungen GmbH Miscellaneous Commercial ServicesCommercial Services Provides business and economic services | Verkställande Direktör | - |
1&1 Telecommunication SE
 1&1 Telecommunication SE Specialty TelecommunicationsCommunications Provides internet services | Direktör/Styrelseledamot | - |
United Internet Investments Holding GmbH
 United Internet Investments Holding GmbH Investment ManagersFinance United Internet Ventures invest in companies located in North America and Europe, primarily in Germany. The firm targets companies operating in the fields of internet and digital infrastructure. It provides financing for buyout transactions. The firm also acquires minority interest. | Verkställande Direktör | - |
Fashion Outlet Grundbesitz GmbH & Co. KG
 Fashion Outlet Grundbesitz GmbH & Co. KG Real Estate DevelopmentFinance Buys and sells land, buildings & apartments | Verkställande Direktör | - |
Drillisch Netz AG | Ordförande | 2020-01-16 |
Tidigare kända positioner av Ralph Dommermuth
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Erfarenheter
Innehade positioner
Aktiva
Inaktiva
Börsnoterade företag
Privata företag
Relationer
60
Första gradens relationer
22
Företag kopplade till första graden
Man
Kvinna
Styrelseledamöter
Chefer
Kopplade företag
| Privata företag | 22 |
|---|---|
1&1 IONOS SE
 1&1 IONOS SE Data Processing ServicesTechnology Services Provides web hosting services | Technology Services |
1&1 Versatel GmbH
 1&1 Versatel GmbH Major TelecommunicationsCommunications Provides fiber optic network services | Communications |
United Internet AG
 United Internet AG Major TelecommunicationsCommunications Provides fixed-line & mobile internet access products and cloud applications | Communications |
Sedo Holding AG
 Sedo Holding AG Advertising/Marketing ServicesCommercial Services Markets on-line advertising space | Commercial Services |
Drillisch AG
 Drillisch AG Specialty TelecommunicationsCommunications Provides telecommunications services | Communications |
Tele Columbus AG
 Tele Columbus AG Cable/Satellite TVConsumer Services Provides cable television, telephone communications and internet subscription services | Consumer Services |
STRATO AG
 STRATO AG Data Processing ServicesTechnology Services Provides web hosting services | Technology Services |
1&1 Versatel Deutschland GmbH
 1&1 Versatel Deutschland GmbH Information Technology ServicesTechnology Services Provides information technology services | Technology Services |
United Internet Investments Holding GmbH
United Internet Investments Holding GmbH Investment ManagersFinance United Internet Ventures invest in companies located in North America and Europe, primarily in Germany. The firm targets companies operating in the fields of internet and digital infrastructure. It provides financing for buyout transactions. The firm also acquires minority interest. | Finance |
Ralph Dommermuth Beteiligungen GmbH
Ralph Dommermuth Beteiligungen GmbH Miscellaneous Commercial ServicesCommercial Services Provides business and economic services | Commercial Services |
United Internet Media GmbH
 United Internet Media GmbH Advertising/Marketing ServicesCommercial Services Provides online media services | Commercial Services |
Rocket Internet SE
 Rocket Internet SE Financial ConglomeratesFinance Invests in technology and internet companies | Finance |
1&1 Telecommunication SE
1&1 Telecommunication SE Specialty TelecommunicationsCommunications Provides internet services | Communications |
1&1 Mail & Media Applications SE
 1&1 Mail & Media Applications SE Specialty TelecommunicationsCommunications Provides telecommunications services | Communications |
Drillisch Netz AG | |
1&1 AG
 1&1 AG Specialty TelecommunicationsCommunications Provides telecommunication services | Communications |
RD-II Projektentwicklungs GmbH & Co. KG
 RD-II Projektentwicklungs GmbH & Co. KG Miscellaneous Commercial ServicesCommercial Services Provides administration and management services | Commercial Services |
Fashion Outlet Grundbesitz GmbH & Co. KG
Fashion Outlet Grundbesitz GmbH & Co. KG Real Estate DevelopmentFinance Buys and sells land, buildings & apartments | Finance |
IONOS Holding SE
 IONOS Holding SE Miscellaneous Commercial ServicesCommercial Services Provides business advisory services | Commercial Services |
1&1 EDV Marketing GmbH | |
Internet Economy Foundation
Internet Economy Foundation Investment Trusts/Mutual FundsMiscellaneous Operates as a internet economy foundation | Miscellaneous |
IONOS Group SE
 IONOS Group SE Data Processing ServicesTechnology Services Offers web hosting, domain registration and cloud solutions | Technology Services |
