What is the Y-tunnus number of Teräsasennus Toivonen Oy?

Teräsasennus Toivonen Oy is registered with PRH / YTJ under Y-tunnus 0835742-6.

What is the revenue of Teräsasennus Toivonen Oy?

Teräsasennus Toivonen Oy reported revenue of EUR 6,4M in 2025.

Atte Ilkka Tapani Väänänen is Person with significant control of Teräsasennus Toivonen Oy, in role since 2014.

Jukka Petteri Karhu chairs the board of Teräsasennus Toivonen Oy, in role since 2018.

Teräsasennus Toivonen Oy's registered address is Heikkiläntie 140.

OYActive

Y-tunnus 0835742-6Heikkiläntie 140, 21840 KarinainenManufacture of metal structures and parts of structures · NACE 2511Est. 1989— employees

Actively employed in the business

Name	Role	Member since
Current (2)
MM Miikka Matias Väänänen Confidential Clerk	Confidential Clerk	2021
EJ Eerik Johannes Seppänen Chief Executive Officer	Chief Executive Officer	2021
Former (5)
AI Atte Ilkka Tapani Väänänen Person with significant control	Person with significant control	2014 – 2020
RK Raimo Kalevi Toivonen Person with significant control	Person with significant control	2014 – 2020
KM Katja Maria Pesonen Audit	Audit	2014 – 2021
EI Elina Irja Anneli Laitinen Audit	Audit	2021 – 2023
JA Juha Antti Väinämö Väänänen Person with significant control	Person with significant control	2014 – 2020

Non-executive oversight

Name	Role	Member since
Current (4)
JT Jonne Teemu Tapio Ihalainen	Board of Directors	2026
VK Ville Kalevi Toivonen	Board of Directors	2018
PA Petri Antero Forsström	Board of Directors	2018
JP Jukka Petteri Karhu	Chairperson	2018
Former (2)
AP Ari-Pekka Pakarinen	Board of Directors	2018 – 2020
AJ Akseli Johannes Paavola	Board of Directors	2024 – 2026

As of last annual report

Shareholder	Type	Ownership	Votes	Since
Master Yhtiöt Oy	Company	71.1%	71.1%	2025

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