What is the Y-tunnus number of Summa Defence Oyj?

Summa Defence Oyj is registered with PRH / YTJ under Y-tunnus 2309682-6.

What is the revenue of Summa Defence Oyj?

Summa Defence Oyj reported revenue of 79,2 milj. € in 2024.

Summa Defence Oyj employs 3 people as of the latest annual report.

Robert Ola Blumberg is the CEO of Summa Defence Oyj, in role since 2026.

Arto Tuomas Räty chairs the board of Summa Defence Oyj, in role since 2025.

Summa Defence Oyj's registered address is Mäkelänkatu 87.

OYJActive

Y-tunnus 2309682-6Mäkelänkatu 87, 00610 HelsinkiManufacture of electronic components· NACE 2611Est. 2010 · 16 years old3 employeeswww.summadefence.fi

Actively employed in the business

Name	Role	Member since
Current (2)
HK Hanna Katriina Kyrki Confidential Clerk	Confidential Clerk	2026
RO Robert Ola Blumberg Chief Executive Officer	Chief Executive Officer	2026

Former (16)


JP Jari Pentti Varjotie Chief Executive Officer	Chief Executive Officer	2010 – 2023
PV Pekka Vilhelm Karjalainen Confidential Clerk	Confidential Clerk	2018 – 2023
JS Jussi Samuli Holopainen Chief Executive Officer	Chief Executive Officer

Non-executive oversight

Name	Role	Member since
Current (4)
AJ Antti Juhani Vehviläinen Board of Directors	Board of Directors	2025
JM Jussi-Pekka Mälkiä Board of Directors	Board of Directors	2024
AT Arto Tuomas Räty Chairperson	Chairperson	2025
SS Sirpa-Helena Sormunen Board of Directors	Board of Directors	2025

Former (12)


JP Jari Pentti Varjotie Board of Directors	Board of Directors	2023 – 2024
VE Ville Eljas Repo Board of Directors	Board of Directors	2022 – 2023
JF Johan Feodor Aminoff

As of last annual report

Shareholder	Type	Ownership	Votes	Since
Meriaura Invest Oy	Company	61%	61%	2024

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