What is the Y-tunnus number of Helen Sähköverkko Oy?

Helen Sähköverkko Oy is registered with PRH / YTJ under Y-tunnus 2035428-7.

What is the revenue of Helen Sähköverkko Oy?

Helen Sähköverkko Oy reported revenue of EUR 145,5M in 2025.

Osmo Kullervo Siirto is Person with significant control of Helen Sähköverkko Oy, in role since 2019.

Matti Erkki Kalevi Malinen chairs the board of Helen Sähköverkko Oy, in role since 2011.

Helen Sähköverkko Oy's registered address is Itämerenkatu 25.

OYActive

Y-tunnus 2035428-7Itämerenkatu 25, 00180 HelsinkiTransmission of electricity · NACE 3513Est. 2006— employees

Actively employed in the business

Non-executive oversight

Name	Role	Member since
Current (3)
JM Jukka Mikael Kalliomäki	Board of Directors	2024
SM Susan Marie Patronen	Board of Directors	2026
TJ Tuukka Jaakko Toivonen	Chairperson	2024
Former (8)
JE Juhani Erik Matias Aaltonen	Board of Directors	2020 – 2024
ME Matti Erkki Kalevi Malinen	Chairperson	2011 – 2021
HJ Harri Juhani Sirpoma	Board of Directors	2022 – 2024
NT Niina Tuulikki Puumalainen	Board of Directors	2011 – 2019
HT Heikki Tapani Hapuli	Board of Directors	2019 – 2020
AP Antti Pekka Santeri Sallila	Chairperson	2021 – 2022
TP Timo Petri Jalmari Aaltonen	Board of Directors	2024 – 2026
JK Jaana Katri Hannele Eklund	Board of Directors	2011 – 2022

As of last annual report

Shareholder	Type	Ownership	Votes	Since
Helen Oy	Company	100%	100%	2023

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Name	Role	Member since
Current (5)
KA Kati Annika Kinnunen Person with significant control	Person with significant control	2023
MP Markku Pekka Hyvärinen Person with significant control	Person with significant control	2018
EP Esa Pekka Äärynen Person with significant control	Person with significant control	2025
JA Jyrki Aukusti Nieminen Person with significant control	Person with significant control	2018
MT Markus Timo Johannes Lehtonen Chief Executive Officer	Chief Executive Officer	2019
Former (9)
OK Osmo Kullervo Siirto Person with significant control	Person with significant control	2019 – 2023
SH Sanna Helena Liljeström Person with significant control	Person with significant control	2019 – 2019
KM Kaija Marita Pakkanen Audit	Audit	2015 – 2019
TK Teppo Kalevi Härkönen Person with significant control	Person with significant control	2018 – 2020
JK Jenni Karoliina Murtomaa Person with significant control	Person with significant control	2018 – 2019
JT Jouni Tapio Lehtinen Deputy Chief Executive Officer	Deputy Chief Executive Officer	2017 – 2024
EJ Esa Jaakko Kailiala Audit	Audit	2019 – 2023
TT Tommi Tapio Karjalainen Chief Executive Officer	Chief Executive Officer	2017 – 2019
PJ Petri Juhani Vihavainen Person with significant control	Person with significant control	2019 – 2020