What is the Y-tunnus number of Widenius, Sederholm & Someri Oy Ab?

Widenius, Sederholm & Someri Oy Ab is registered with PRH / YTJ under Y-tunnus 0115154-8.

Who is the CEO of Widenius, Sederholm & Someri Oy Ab?

Timo Teemu Edvard Helle is Audit of Widenius, Sederholm & Someri Oy Ab, in role since 2016.

Raija-Leena Hankonen-Nybom chairs the board of Widenius, Sederholm & Someri Oy Ab, in role since 2017.

Widenius, Sederholm & Someri Oy Ab's registered address is Pl 1037.

OYActive

Actively employed in the business

Name	Role	Member since
Current (1)
TO Tom Ove Nyman Chief Executive Officer	Chief Executive Officer	2026
Former (5)
TT Timo Teemu Edvard Helle Audit	Audit	2016 – 2021
NE Nicolina Emilia Mickelsson Deputy auditor	Deputy auditor	2016 – 2021
KP Kimmo Petteri Antonen Chief Executive Officer	Chief Executive Officer	2025 – 2026
LJ Lauri Janne Ilmari Mäki Audit	Audit	2021 – 2023
PK Pasi Kalevi Koivunen Chief Executive Officer	Chief Executive Officer	2024 – 2025

Non-executive oversight

Name	Role	Member since
Current (2)
AP Antti Petteri Lojamo	Board of Directors	2026
TK Toni Kalervo Aaltonen	Board of Directors	2026
Former (5)
AE Anders Edvard Lundin	Board of Directors	2021 – 2024
AS Antti Sakari Kääriäinen	Board of Directors	2024 – 2026
AP Ari Pekka Eskelinen	Board of Directors	2019 – 2021
JP Juha Pekka Purovesi	Board of Directors	2017 – 2026
RH Raija-Leena Hankonen-Nybom	Chairperson	2017 – 2019

As of last annual report

Shareholder	Type	Ownership	Votes	Since
KPMG Oy Ab	Company	100%	100%	2023

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