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Sisters & Company Oy
OY
Active
Y-tunnus 2164593-2
Miestentie 9, 02150
Espoo
All other professional, scientific and technical activities n.e.c.
· NACE 7499
Est. 2007
15 employees
www.sisters.fi
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All other professional, scientific and technical activities n.e.c.
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Sisters & Company Oy
Overview
Financials
People & ownership
Related companies
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People & ownership
Management
Actively employed in the business
Name
Role
Member since
Current (2)
OM
Osnat Mangs
Deputy Chief Executive Officer
Deputy Chief Executive Officer
2025
MS
Miika Sakari Lumme
Chief Executive Officer
Chief Executive Officer
2025
Former (2)
MJ
Markku Juhani Kosonen
Chief Executive Officer
Chief Executive Officer
2023 – 2024
TJ
Turo Juhani Koila
Audit
Audit
2017 – 2023
Board of directors
Non-executive oversight
Name
Role
Member since
Current (4)
TJ
Timo Juhani Ronkainen
Board of Directors
2025
DK
Diana Karoliina Pikkarainen
Board of Directors
2026
TT
Tomi Tapio Halonen
Chairperson
2026
SJ
Simo Jussi Kajaste
Board of Directors
2025
Former (5)
JA
Juha-Pekka Antero Jaskari
Board of Directors
2016 – 2020
MJ
Mika Juhani Järvinen
Board of Directors
2023 – 2025
JM
Janne Mikko Ritakoski
Board of Directors
2016 – 2022
JT
Jarkko Tapani Nordlund
Chairperson
2022 – 2023
HP
Harri Pekka Vihma
Board of Directors
2020 – 2022
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