Semko Oy

OYActive

Y-tunnus 0989910-4Tehtaantie 8, 60100 SeinäjokiManufacture of metal structures and parts of structures· NACE 2511Est. 1995 · 31 years old31 employees

Overview Financials People & ownership Related companies

Semko Oy is a Finnish OY based in Seinäjoki, operating in the Manufacture of metal structures and parts of structures sector. Incorporated in 1995, the company has 31 employees and reported revenue of EUR 7,4M in its latest annual filing.

Revenue 2025

EUR 7,4M

+21% vs 2024

EBITDA margin

7.9%

+176% vs 2024

Net profit 2025

EUR 360K

+416% vs 2024

Key ratios

See full ratios →

51.9%

This company

20212025

2.8×

This company

20212025

9.6%

This company

20212025

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 7,4M	+21%
EBITDA	EUR 584K	+176%
Net profit	EUR 360K	+416%
Total assets	EUR 3,8M	+8%
Equity	EUR 1,9M	-2%
Employees	31	—

Contact

Address

Tehtaantie 8, 60100 Seinäjoki

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Frequently asked questions

What is the Y-tunnus number of Semko Oy?

Semko Oy is registered with PRH / YTJ under Y-tunnus 0989910-4.

What is the revenue of Semko Oy?

Semko Oy reported revenue of EUR 7,4M in 2025.

How many employees does Semko Oy have?

Semko Oy employs 31 people as of the latest annual report.

Who is the CEO of Semko Oy?

Mikko Antero Yliselä is the CEO of Semko Oy, in role since 2014.

Who is the chairman of Semko Oy?

Petri Kalevi Koivunen chairs the board of Semko Oy, in role since 2025.

Where is Semko Oy headquartered?

Semko Oy's registered address is Tehtaantie 8.

Semko Oy

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Semko Oy

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Semko Oy