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Sierra Alfa Oy
OY
Active
Y-tunnus 2615209-6
Lyhtykuja 6, 00750
Helsinki
Landfilling or permanent storage
· NACE 3832
Est. 2014
— employees
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Sierra Alfa Oy
Overview
Financials
People & ownership
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People & ownership
Management
Actively employed in the business
Name
Role
Member since
Former (3)
JT
Jussi Tapani Mertamo
Chief Executive Officer
Chief Executive Officer
2020 – 2023
PP
Pasi Petteri Siimes
Chief Executive Officer
Chief Executive Officer
2014 – 2020
HJ
Harri Jaakko Johannes Heikkilä
Deputy Member
Deputy Member
2014 – 2019
Board of directors
Non-executive oversight
No data on file.
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