Tuomas Siitonen Oy

OYActive

Y-tunnus 2349921-1Tyynenmerenkatu 6C, 00220 HelsinkiArchitectural activities· NACE 7111Est. 2010 · 15 years old— employees

Overview Financials People & ownership Related companies

Tuomas Siitonen Oy is a Finnish OY based in Helsinki, operating in the Architectural activities sector. Incorporated in 2010, the company reported revenue of EUR 75K in its latest annual filing.

Revenue 2025

EUR 75K

-6% vs 2024

EBITDA margin

19.2%

+295% vs 2024

Net profit 2025

EUR 13K

+2199% vs 2024

Key ratios

See full ratios →

-79.0%

This company

20212025

4.6×

This company

20212025

117.1%

This company

20212025

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 75K	-6%
EBITDA	EUR 14K	+295%
Net profit	EUR 13K	+2199%
Total assets	EUR 11K	-15%
Equity	EUR -9K	+62%
Employees	—	—

Contact

Address

Tyynenmerenkatu 6C, 00220 Helsinki

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Frequently asked questions

What is the Y-tunnus number of Tuomas Siitonen Oy?

Tuomas Siitonen Oy is registered with PRH / YTJ under Y-tunnus 2349921-1.

What is the revenue of Tuomas Siitonen Oy?

Tuomas Siitonen Oy reported revenue of EUR 75K in 2025.

Who is the CEO of Tuomas Siitonen Oy?

Tuomas Tuomonpoika Siitonen is the CEO of Tuomas Siitonen Oy.

Where is Tuomas Siitonen Oy headquartered?

Tuomas Siitonen Oy's registered address is Tyynenmerenkatu 6-C.

Tuomas Siitonen Oy

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Tuomas Siitonen Oy

Key ratios

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on Tuomas Siitonen Oy