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Extum Oy
OY
Active
Y-tunnus 3003017-1
Mikkolankuja 4F-4107, 00640
Helsinki
Plumbing, heat and air-conditioning installation
· NACE 4322
Est. 2019
— employees
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Plumbing, heat and air-conditioning installation
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Extum Oy
Overview
Financials
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People & ownership
Management
Actively employed in the business
Name
Role
Member since
Former (1)
JE
Jenny Emilia Pornsawan Tienhaara Vuolento
Deputy Member
Deputy Member
2021 – 2021
Board of directors
Non-executive oversight
Name
Role
Member since
Current (1)
JR
Jovy Rochelle Tayo
Board of Directors
2021
Former (4)
MV
Mikko Ville Valtteri Parviainen
Board of Directors
2019 – 2019
AU
Arkemion Ursus
Board of Directors
2019 – 2021
PM
Pekka Määttä
Chairperson
2019 – 2019
JI
Jaana Inkeri Ursus
Board of Directors
2019 – 2019
Shareholders
As of last annual report
No shareholder data available.
Beneficial ownership (UBO) data access is restricted in Denmark as of September 2025 per the EU 6th AML Directive.
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Corporate hierarchy, parent and subsidiary network