Skip to content
Single Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 2 SOURCES

Inasis Oy

Sister-owned investment company in Askola, Finland, focused on the building and construction industry and a long-term owner of Sewatek.

USEFUL FOR Co-investors

Family & background

HEADQUARTERS
Askola, Finland
FOUNDED
1989
OUTSIDE CAPITAL
No — own capital only

Investment approach

SECTORS
Industrial & ManufacturingReal Estate & PropTech
ROUTES
Companies (own capital)

Overview

Inasis Oy is an investment company in Askola, Finland, owned by sisters, that focuses on the building and construction industry. It describes itself as a long-term, committed owner of Sewatek. The company was registered in 1989 and traded as Sewatek Oy until it took the Inasis Oy name in 2018.

Investment thesis

Long-term, committed ownership in the building and construction industry.

Holdings & investments (1)

  • Sewatek
    Industrial & Manufacturing

People

  • Anna Miettinen
    CEO and Partner · source
  • Noora Miettinen
    Partner · source
  • Iida Miettinen
    Partner · source
  • Sini Fieandt
    Financial Manager · source

Frequently asked questions

Inasis Oy is a single family office based in Askola, Finland, founded in 1989.

Inasis Oy invests its own capital into companies.

Inasis Oy invests in Industrial & Manufacturing and Real Estate & PropTech.

Key people at Inasis Oy include Anna Miettinen (CEO and Partner), Noora Miettinen (Partner), Iida Miettinen (Partner) and Sini Fieandt (Financial Manager).

Inasis Oy's holdings and investments include Sewatek.

No. Inasis Oy invests its own capital and does not raise money from outside investors.