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Ark-Sis-To Oy
OY
Active
Y-tunnus 0495232-4
Yrjönkatu 36A, 00100
Helsinki
Rental and operating of own or leased real estate
· NACE 6820
Est. 1982
— employees
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Rental and operating of own or leased real estate
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Ark-Sis-To Oy
Overview
Financials
People & ownership
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People & ownership
Management
Actively employed in the business
Name
Role
Member since
Current (1)
JA
Jiro Aarni Valtteri Luostarinen
Confidential Clerk
Confidential Clerk
2023
Former (4)
KV
Kari Veikko Haapala
Confidential Clerk
Confidential Clerk
2009 – 2023
LM
Liisa Marjatta Niskala-Luostarinen
Chief Executive Officer
Chief Executive Officer
1982 – 2022
PK
Pii Killa Marjaana Haapala
Deputy Member
Deputy Member
2009 – 2022
KK
Kari Kullervo Mikkola
Audit
Audit
2007 – 2023
Board of directors
Non-executive oversight
Name
Role
Member since
Current (1)
PJ
Pero Jaarni Juhani Luostarinen
Board of Directors
2022
Former (1)
LM
Liisa Marjatta Niskala-Luostarinen
Board of Directors
2009 – 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