IISII Oy

OYDissolved

Y-tunnus 2636528-6Paimenpojantie 7, 13210 HämeenlinnaOther specialised construction activities n.e.c. · NACE 4399Est. 2014— employees

Overview Financials People & ownership Related companies

IISII Oy is a Finnish OY based in Hämeenlinna, operating in the Muu muualla luokittelematon monenlainen erikoistunut rakennustoiminta sector. Incorporated in 2014, the company reported revenue of EUR 2K in its latest annual filing.

Revenue 2025

EUR 2K

-31% vs 2024

EBITDA margin

82.9%

+303% vs 2024

Equity ratio

42.4%

Financial strength

Net profit 2025

EUR 1K

+396% vs 2024

EBITDA — year on year

EUR millions

Key figures

Annual report 2025

Revenue	EUR 2K	-31%
EBITDA	EUR 2K	+303%
Net profit	EUR 1K	+396%
Total assets	EUR 10K	+11%
Equity	EUR 4K	+100%
Employees	—	—

Contact

Address

Paimenpojantie 7, 13210 Hämeenlinna

Phone

+3580404030028

pertti.siirila@iisi.fi

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Frequently asked questions

What is the Y-tunnus number of IISII Oy?

IISII Oy is registered with PRH / YTJ under Y-tunnus 2636528-6.

What is the revenue of IISII Oy?

IISII Oy reported revenue of EUR 2K in 2025.

Who is the CEO of IISII Oy?

Aila Marika Siirilä is Deputy Member of IISII Oy, in role since 2014.

Who is the chairman of IISII Oy?

Jarkko Patrik Juhani Iivonen chairs the board of IISII Oy, in role since 2014.

Where is IISII Oy headquartered?

IISII Oy's registered address is Paimenpojantie 7.

IISII Oy

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on IISII Oy

EBITDA — year on year

Key figures

Company information

Contact

Frequently asked questions

More on IISII Oy