What is the Y-tunnus number of Mainstar Oy?

Mainstar Oy is registered with PRH / YTJ under Y-tunnus 0690996-0.

What is the revenue of Mainstar Oy?

Mainstar Oy reported revenue of 19,2 t. € in 2026.

Ilkka Tapani Kiviharju is the CEO of Mainstar Oy, in role since 1995.

Ilkka Tapani Kiviharju chairs the board of Mainstar Oy, in role since 2024.

Mainstar Oy's registered address is C/O Ilkka Kiviharju Aamutie 18-B.

OYActive

Y-tunnus 0690996-0C/O Ilkka Kiviharju Aamutie 18B, 02210 EspooComputer programming activities· NACE 6210Est. 1988 · 38 years old— employees

Actively employed in the business

Name	Role	Member since
Current (1)
IT Ilkka Tapani Kiviharju Chief Executive Officer	Chief Executive Officer	1995

Non-executive oversight

Name	Role	Member since
Current (3)
PA Pia Anne-Riitta Kiviharju Board of Directors	Board of Directors	2024
IT Ilkka Tapani Kiviharju Chairperson	Chairperson	2024
TT Tomas Tapani Kiviharju Board of Directors	Board of Directors	2024

Former (2)


TT Tuomo Tapani Elo Chairperson	Chairperson	1995 – 2024
PK Petri Kristian Lindholm Board of Directors	Board of Directors	1995 – 2024

As of last annual report

No shareholder data available.

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