What is the Y-tunnus number of MastTech Oy?

MastTech Oy is registered with PRH / YTJ under Y-tunnus 2730417-8.

What is the revenue of MastTech Oy?

MastTech Oy reported revenue of EUR 260K in 2025.

MastTech Oy employs 2 people as of the latest annual report.

Antti Sakari Kääriäinen is Deputy auditor of MastTech Oy, in role since 2025.

Kimmo Viljami Kemppainen chairs the board of MastTech Oy, in role since 2025.

MastTech Oy's registered address is Linturinteenkatu 6.

OYActive

Y-tunnus 2730417-8Linturinteenkatu 6, 88610 VuokattiOther specialised construction activities n.e.c. · NACE 4399Est. 20152 employeeswww.masttech.fi

Actively employed in the business

Name	Role	Member since
Current (4)
AS Antti Sakari Kääriäinen Deputy auditor	Deputy auditor	2025
AV Ari Viljami Piirainen Audit	Audit	2015
HO Heikki Olavi Kaipainen Chief Executive Officer	Chief Executive Officer	2025
NR Niko Rasmus Viljami Kemppainen Deputy Member	Deputy Member	2021
Former (1)
RI Rauli Ilmari Alfons Johansson Deputy auditor	Deputy auditor	2015 – 2025

Non-executive oversight

Name	Role	Member since
Current (1)
KV Kimmo Viljami Kemppainen	Chairperson	2025
Former (1)
JM Juuso Martti Petteri Laitinen	Board of Directors	2015 – 2021

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. Learn more.