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Semantum Oy
OY
Active
Y-tunnus 2148357-4
Tekniikantie 14, 02150
Espoo
Computer programming activities
· NACE 6210
Est. 2007
19 employees
www.semantum.fi
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Semantum Oy
Overview
Financials
People & ownership
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People & ownership
Management
Actively employed in the business
Name
Role
Member since
Current (2)
TV
Tuukka Vilnius Lehtonen
Deputy Chief Executive Officer
Deputy Chief Executive Officer
2008
AT
Antti Tapio Villberg
Chief Executive Officer
Chief Executive Officer
2008
Former (1)
KH
Katja Helena Hanski
Audit
Audit
2018 – 2023
Board of directors
Non-executive oversight
Name
Role
Member since
Current (3)
MY
Mitsuhiro Yamamoto
Board of Directors
2026
HP
Hannu Pellervo Niemistö
Board of Directors
2018
TA
Tommi Antero Karhela
Chairperson
2018
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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