What is the Y-tunnus number of OS Holding Oy?

OS Holding Oy is registered with PRH / YTJ under Y-tunnus 3102756-4.

Who is the CEO of OS Holding Oy?

Maire Anneli Saastamoinen is Deputy Member of OS Holding Oy, in role since 2019.

Jekaterina Trelina chairs the board of OS Holding Oy, in role since 2026.

OS Holding Oy's registered address is Huvilakatu 21-A5.

OYDissolved

Y-tunnus 3102756-4Huvilakatu 21A-215, 00150 HelsinkiOther financial service activities, except insurance and pension funding n.e.c. · NACE 6499Est. 2019 · 6 years old— employees

Actively employed in the business

Name	Role	Member since
Current (1)
NE Nicole Emilia Trelina Deputy Member	Deputy Member	2026
Former (1)
MA Maire Anneli Saastamoinen Deputy Member	Deputy Member	2019 – 2026

Non-executive oversight

As of last annual report

No shareholder data available.

Beneficial ownership (UBO) data access is restricted in Denmark as of September 2025 per the EU 6th AML Directive. Learn more.