Oy SEK Ab

OYActive

Y-tunnus 0115535-4Siltasaarenkatu 8-10, 00530 HelsinkiActivities of advertising agencies· NACE 7311Est. 1967 · 59 years old121 employees

Overview Financials People & ownership Related companies

Oy SEK Ab is a Finnish OY based in Helsinki, operating in the Activities of advertising agencies sector. Incorporated in 1967, the company has 121 employees and reported revenue of EUR 17,7M in its latest annual filing.

Revenue 2025

EUR 17,7M

+4% vs 2024

EBITDA margin

3.2%

-62% vs 2024

Net profit 2025

EUR 263K

-70% vs 2024

Key ratios

See full ratios →

79.0%

This company

20212025

4.7×

This company

20212025

2.7%

This company

20212025

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 17,7M	+4%
EBITDA	EUR 559K	-62%
Net profit	EUR 263K	-70%
Total assets	EUR 9,8M	-99%
Equity	EUR 7,7M	-99%
Employees	121	—

Contact

Address

Siltasaarenkatu 8-10, 00530 Helsinki

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Frequently asked questions

What is the Y-tunnus number of Oy SEK Ab?

Oy SEK Ab is registered with PRH / YTJ under Y-tunnus 0115535-4.

What is the revenue of Oy SEK Ab?

Oy SEK Ab reported revenue of EUR 17,7M in 2025.

How many employees does Oy SEK Ab have?

Oy SEK Ab employs 121 people as of the latest annual report.

Who is the CEO of Oy SEK Ab?

Jaakko Aleksi Rantala is the CEO of Oy SEK Ab, in role since 2017.

Who is the chairman of Oy SEK Ab?

Kirsi Kristiina Harra-Vauhkonen chairs the board of Oy SEK Ab, in role since 2021.

Where is Oy SEK Ab headquartered?

Oy SEK Ab's registered address is Siltasaarenkatu 810.

Oy SEK Ab

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Oy SEK Ab

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Oy SEK Ab