Kai Siinmaa

Equity holdings (5)

Companies in which this person holds a stake.

• Interface OÜ60.00%

  Osaühing144383840 €since 2023-09-01
• Baltic HC Solutions OÜ50.00%

  Osaühing12213184936.8 k €since 2023-09-01
• HealthBook OÜ30.75%

  Osaühing122155460 €since 2023-09-01
• HoneyMedical OÜ20.00%

  Osaühing145156010 €since 2023-09-01
• S5 Invest OÜ16.00%

  Osaühing164223580 €since 2025-11-05

Active roles (3)

• Interface OÜ — Juhatuse liige (since 2018-02-28)
• HealthBook OÜ — Juhatuse liige (since 2012-01-09)
• Baltic HC Solutions OÜ — Juhatuse liige (since 2012-01-03)

Co-directors (3)

People who currently serve on the same boards. Sorted by number of shared companies.

• Mart Levo1 shared companyHealthBook OÜ
• Paula Siinmaa1 shared companyBaltic HC Solutions OÜ
• Toomas Oper1 shared companyHealthBook OÜ

Co-investors (8)

People who hold equity in the same companies. Sorted by number of shared stakes.

• Paula Siinmaa3 shared companiesBaltic HC Solutions OÜ · Interface OÜ · S5 Invest OÜ
• Mihkel Siinmaa2 shared companiesInterface OÜ · S5 Invest OÜ
• Andres Siinmaa1 shared companyS5 Invest OÜ
• Margus Viigimaa1 shared companyHealthBook OÜ
• Mart Levo1 shared companyHealthBook OÜ
• Merle Tasane1 shared companyHoneyMedical OÜ
• Peeter Tasane1 shared companyHoneyMedical OÜ
• Toomas Oper1 shared companyHealthBook OÜ

Data sources

• Estonian Business Register (RIK)updated daily