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Thomas Dannenfeldt
Net worth: 210 756 $ as of 31/12/2025
Profile
Thomas Dannenfeldt currently works at German Telekom Services Europe GmbH, as Chairman-Supervisory Board from 2016, Nokia Oyj, as Independent Non-Executive Director from 2020, and T-Mobile US, Inc., as Independent Director from 2025.
Mr. Dannenfeldt also formerly worked at T-Systems International GmbH, as Chairman-Supervisory Board from 2014 to 2016, EE Ltd., as Chairman from 2014 to 2016, CECONOMY AG, as Chairman-Supervisory Board, Virgin Mobile Telecoms Ltd., as Director in 2004, Telekom Deutschland GmbH, as Finance Director in 2013, T-Mobile US, Inc., as Director from 2013 to 2018, Deutsche Telekom AG, as Chief Financial Officer from 2014 to 2018, Buyin SA, as Member-Supervisory Board from 2017 to 2018, and BUYIN GmbH, as Member-Supervisory Board from 2014 to 2018.
Mr. Dannenfeldt received his undergraduate degree from the University of Trier.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 06/06/2025 | 1,038 ( 0% ) | 210 756 $ | 31/12/2025 |
Latest news about Thomas Dannenfeldt
| 23/25/23 | Nokia Oyj : results 2025 q3 | PU |
| 24/25/24 | Nokia Oyj : results 2025 q2 | PU |
| 16/25/16 | Ceconomy Chairman to Step Down in July; Successor Named | MT |
| 16/25/16 | Ceconomy Continues Executive Reshuffle – New Supervisory Board Chairman Appointed | RE |
| 16/25/16 | Ceconomy : Change in the Supervisory Board of CECONOMY AG | PU |
Thomas Dannenfeldt active positions
| Companies | Position | Start |
|---|---|---|
| NOKIA OYJ | Director/Board Member | 27/05/2020 |
| T-MOBILE US, INC. | Director/Board Member | 06/06/2025 |
German Telekom Services Europe GmbH | Chairman | 01/01/2016 |
Former positions of Thomas Dannenfeldt
| Companies | Position | End |
|---|---|---|
| T-MOBILE US, INC. | Director/Board Member | 01/12/2018 |
| DEUTSCHE TELEKOM AG | Director of Finance/CFO | 01/01/2018 |
Buyin SA
 Buyin SA Provides real estate services | Chairman | 01/12/2017 |
Buyin GmbH
 Buyin GmbH Provides procurement services | Director/Board Member | 01/01/2018 |
T-Systems International GmbH
 T-Systems International GmbH Information Technology ServicesTechnology Services Provides digital, cloud and security services | Chairman | 01/11/2016 |
Training of Thomas Dannenfeldt
Experiences
Positions held
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Nokia Oyj
 Nokia Oyj Provides network infrastructure, technology and software services | |
Deutsche Telekom AG
 Deutsche Telekom AG Major TelecommunicationsCommunications Provides telecommunication services | Communications |
Virgin Mobile Telecoms Ltd.
 Virgin Mobile Telecoms Ltd. Specialty TelecommunicationsCommunications Provides mobile telecommunications services | Communications |
T-Systems International GmbH
T-Systems International GmbH Information Technology ServicesTechnology Services Provides digital, cloud and security services | Technology Services |
University of Trier
 University of Trier Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Telekom Deutschland GmbH
 Telekom Deutschland GmbH Major TelecommunicationsCommunications Provides telephone communication services | Communications |
EE Ltd.
 EE Ltd. Provides mobile network and fiber broadband services | |
T-Mobile US, Inc.
 T-Mobile US, Inc. Provides wireless voice, messaging and data services | |
Buyin SA
Buyin SA Provides real estate services | |
German Telekom Services Europe GmbH | |
Buyin GmbH
Buyin GmbH Provides procurement services | |
CECONOMY AG
 CECONOMY AG Owns and operates consumer electronics retailers |
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