What is the Y-tunnus number of Onninen Oy?

Onninen Oy is registered with PRH / YTJ under Y-tunnus 1071207-9.

What is the revenue of Onninen Oy?

Onninen Oy reported revenue of 1,1 mrd. € in 2025.

Who is the CEO of Onninen Oy?

Martti Juhani Forss is the CEO of Onninen Oy, in role since 2018.

Who is the chairman of Onninen Oy?

Sami Petri Kiiski chairs the board of Onninen Oy, in role since 2024.

Where is Onninen Oy headquartered?

Onninen Oy's registered address is Työpajankatu 12.

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Onninen Oy

OYActive

Y-tunnus 1071207-9Työpajankatu 12, 00580 HelsinkiWholesale of hardware, plumbing and heating equipment and supplies· NACE 4684Est. 1996 · 29 years old— employeeswww.onninen.fi

Overview Financials People & ownership Related companies

People & ownership

Management

Actively employed in the business

Former (15)


TH Terhi Hannele Haajanen Person with significant control	Person with significant control	2022 – 2024
KV Kai Veini Puustinen Person with significant control	Person with significant control	2018 – 2019
JA

Board of directors

Non-executive oversight

Name	Role	Member since
Current (3)
JK Johanna Kaarina Kontio Board of Directors	Board of Directors	2025
AA Anu Aulikki Myyryläinen Board of Directors	Board of Directors	2021
SP Sami Petri Kiiski Chairperson	Chairperson	2024

Former (3)


MT Mika Tapani Lehtinen Board of Directors	Board of Directors	2018 – 2021
JA Jorma Antero Rauhala Chairperson	Chairperson	2018 – 2024
MM Mia Maria Kaitaharju

Shareholders

As of last annual report

Shareholder	Type	Ownership	Votes	Since
Kesko Oyj	Company	100%	100%	2023

Beneficial ownership (UBO) data access is restricted in Denmark as of September 2025 per the EU 6th AML Directive. Learn more.

Onninen Oy

People & ownership

Management

Board of directors

Shareholders

More on Onninen Oy

People & ownership

Management

Board of directors

Shareholders

More on Onninen Oy

Name	Role	Member since
Current (22)
PA Päivi Aulikki Avelin-Jakovlev Person with significant control	Person with significant control	2026
JK Johanna Kaarina Kontio Person with significant control	Person with significant control	2025
HM Hanna Maria Jussila Person with significant control	Person with significant control	2018
AH Anu Hannele Anonen Person with significant control	Person with significant control	2023
JT Juho Tuomas Tahvanainen Person with significant control	Person with significant control	2025
JJ Jani Juhani Kakko Person with significant control	Person with significant control	2019
MS Minna Susanna Kautonen Person with significant control	Person with significant control	2021
MJ Martti Juhani Forss Chief Executive Officer	Chief Executive Officer	2018
JJ Jarkko Juhani Karjalainen Person with significant control	Person with significant control	2025
KH Kimmo Heikki Huttunen Person with significant control	Person with significant control	2018
JM Jukka Matti Johannes Yli-Sirniö Person with significant control	Person with significant control	2019
MS Marjo Susanna Särkkä Person with significant control	Person with significant control	2021
PS Pentti Sakari Manninen Person with significant control	Person with significant control	2021
MT Mika Tapani Salmijärvi Person with significant control	Person with significant control	2018
LJ Lumi-Sirkku Johanna Vikiö Person with significant control	Person with significant control	2025
JM Jenni Maria Ala-Hemmilä Person with significant control	Person with significant control	2024
AA Antti Ahti Markus Aunola Person with significant control	Person with significant control	2024
TJ Timo Juhani Nikulainen Person with significant control	Person with significant control	2022
TH Tarja Helena Pursiainen-Vakkari Person with significant control	Person with significant control	2018
HA Heikki Antero Pusa Person with significant control	Person with significant control	2018
JM Jonna Maria Nummela Person with significant control	Person with significant control	2025
EH Elina Hanna Maria Laitto Person with significant control	Person with significant control	2025