Def Group Oy

OYActive

Y-tunnus 3398844-9C/O Def Network Oy Sepänkatu 3D-593, 00150 HelsinkiActivities of holding companies · NACE 6421Est. 20230 employees

Overview Financials People & ownership Related companies

Def Group Oy is a Finnish OY based in Helsinki, operating in the Activities of holding companies sector. Incorporated in 2023, the company has 0 employees and reported revenue of EUR 0 in its latest annual filing.

Revenue 2025

EUR 0

EBITDA margin

—

+66% vs 2024

Equity ratio

100.0%

Financial strength

Net profit 2025

EUR 248K

+75% vs 2024

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 0	—
EBITDA	EUR -816	+66%
Net profit	EUR 248K	+75%
Total assets	EUR 1,5M	+5%
Equity	EUR 1,5M	+10%
Employees	0	—

Contact

Address

C/O Def Network Oy Sepänkatu 3D-593, 00150 Helsinki

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Frequently asked questions

What is the Y-tunnus number of Def Group Oy?

Def Group Oy is registered with PRH / YTJ under Y-tunnus 3398844-9.

Who is the CEO of Def Group Oy?

Antti Juhani Hirvonen is Chief Executive Officer of Def Group Oy, in role since 2023.

Who is the chairman of Def Group Oy?

Jimi Ilkka Eerikki Veijonen chairs the board of Def Group Oy, in role since 2023.

Where is Def Group Oy headquartered?

Def Group Oy's registered address is C/O Def Network Oy Sepänkatu 35-D93.

Def Group Oy

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Def Group Oy

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Def Group Oy