What is the Y-tunnus number of Oiva Midco Oy?

Oiva Midco Oy is registered with PRH / YTJ under Y-tunnus 3217412-8.

Who is the CEO of Oiva Midco Oy?

Arttu Hjalmar Aleksi Hollmérus is the CEO of Oiva Midco Oy, in role since 2025.

Jukka Pekka Ruuska chairs the board of Oiva Midco Oy, in role since 2025.

Oiva Midco Oy's registered address is Atomitie 2-B.

OYDissolved

Actively employed in the business

Name	Role	Member since
Current (3)
JT Jarno Tapani Karhinen Confidential Clerk	Confidential Clerk	2022
NM Niklas Martin Lindbäck Deputy Member	Deputy Member	2025
AH Arttu Hjalmar Aleksi Hollmérus Chief Executive Officer	Chief Executive Officer	2025

Former (3)


JP Jukka Pekka Ruuska Chief Executive Officer	Chief Executive Officer	2025 – 2025
TJ Turo Juhani Koila Audit	Audit	2021 – 2023
LJ Lauri Joonas Heliövaara

Non-executive oversight

Name	Role	Member since
Current (6)
JP Jukka Pekka Ruuska Chairperson	Chairperson	2025
ME Mika Eljas Petteri Savolainen Board of Directors	Board of Directors	2021
JM Janne Markus Näränen Board of Directors	Board of Directors	2025
AH Aimo Heikki Karolus Viitala Board of Directors	Board of Directors	2026
EI Elina Inkeri Piispanen Board of Directors	Board of Directors	2022
LJ Lauri Joonas Heliövaara Board of Directors	Board of Directors	2025

Former (2)


JM Jussi Mikael Niemelä Board of Directors	Board of Directors	2023 – 2023
AT Arjo Tapani Laukia Board of Directors	Board of Directors	2021 – 2025

As of last annual report

Shareholder	Type	Ownership	Votes	Since
Oiva Holding Oy	Company	100%	100%	2023

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