![Risto Siivola](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Risto Siivola was the Chairman of DNA Plc and the Managing Director of Oulun Puhelin Oy.
| Företag | Position | Slut |
|---|---|---|
Oulun Puhelin Oy
 Oulun Puhelin Oy Miscellaneous Commercial ServicesCommercial Services Provides telephone operator services | Företagsledare/Principal | - |
| DNA OYJ | Ordförande | 2010-07-01 |
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Inaktiva
Börsnoterade företag
Privata företag
| Privata företag | 2 |
|---|---|
DNA Plc
 DNA Plc Major TelecommunicationsCommunications Provides telecommunication services | Communications |
Oulun Puhelin Oy
Oulun Puhelin Oy Miscellaneous Commercial ServicesCommercial Services Provides telephone operator services | Commercial Services |
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