Kolmiokirja Oy

Operating as a Limited liability company, Kolmiokirja Oy is registered with the corporate identifier 0477996-3. Its registered office is located in , Finland. Its primary business activity falls under Publishing of newspapers, classified within Publishing, broadcasting, and content production and distribution activities.

In 2025, Kolmiokirja Oy generated revenue of €6.4 million, placing it in the small-business tier. This figure represents year-over-year growth of 4.2% compared with the prior period. The company closed the year as a profitable operation.