ContactTerms
ET/EN/RU
EN
EestiEnglishРусский
nimistuEstonia's public business register
HomeViewsIndustriesBlogSourcesAbout

Public registry of Estonian companies — every fact traceable to a source and a date. Free and ad-free for everyone.

Nimistu MTÜ
Address: Parda tn 8, 10151 Tallinn, Estonia
E-mail: info@nimistu.ee

Browse

  • Home
  • Views
  • Industries
  • Activity licences
  • Recent registrations

Data

  • 79 sources
  • Database
  • Extensions
  • MCP

Organisation

  • About
  • FAQ
  • For journalists
  • Donate
  • Donation terms
  • Refunds
  • Terms
  • Privacy
  • Contact
© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
ContactTerms
ET/EN/RU
EN
EestiEnglishРусский
nimistu
Search›Companies›HealthBook OÜ
12215546ActivePrivate limited company

HealthBook OÜ

Harju maakond, Viimsi vald, Pringi küla, Tammiku tee 18·EMTAK 62021 — Arvutialased konsultatsioonid·14+ years
Andmed · ···
On this page
SanctionsOverviewOfficersShareholdersFoundersOther rolesForeign parentSubsidiariesFinancialsTax filingsPledgesPledges as creditorLicencesNoticesTech stackCourt rulingsTVK decisionsBlacklistLabour inspectorateHazardous facilityDPA decisionsTax-deductibleEU lobby registerTrademarksPatentsReal estateVehiclesGrantsProcurementsDocumentsState paymentsActivityConnected companies
Extension

Right in search

nimistu card above Google, Bing and DuckDuckGo results.

Chrome→Firefox→Edge→
Free · ~14 KB
See the extension →

Overview

e-Business Register · 1 mo ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
09.01.2012e-Business Register
Address
Tammiku tee 18, Pringi küla, Viimsi vald, 74011 Harju maakondADS · e-Business Register
E-mail address
kai@healthbook.eee-Business Register
Telephone
+372 56950767· Telia Eesti ASe-Business Register · TTJA NBA
Principal activity
EMTAK 62021 - Arvutialased konsultatsioonide-Business Register · ETCB
Share capital
64 712,00 €e-Business Register
Estonia's public business register
HomeViewsIndustriesBlogSourcesAbout

Public registry of Estonian companies — every fact traceable to a source and a date. Free and ad-free for everyone.

Nimistu MTÜ
Address: Parda tn 8, 10151 Tallinn, Estonia
E-mail: info@nimistu.ee

Browse

  • Home
  • Views
  • Industries
  • Activity licences
  • Recent registrations

Data

  • 79 sources
  • Database
  • Extensions
  • MCP

Organisation

  • About
  • FAQ
  • For journalists
  • Donate
  • Donation terms
  • Refunds
  • Terms
  • Privacy
  • Contact
© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Revenue
0 €
Employees
–
2023 annual report
Taxes paid
–
Tax debt
0 €
As of 11.08.2026 (MTA)

Registered 9. jaanuar 2012, primary activity: Arvutialased konsultatsioonid. Main place of business in Pringi küla, Viimsi vald, Harju maakond.

Data · 6 sourcese-Business Register · 5 min agoEUIPO
e-Business Register ↗
Revenue
0 €
Employees
–
2023 annual report
Taxes paid
–
Tax debt
€0
As of 11.08.2026 (MTA)

Officers (3)

e-Business Register · 1 mo ago
KS
Kai Siinmaa
Born 1966 · 60 y · board member since 09.01.2012
Board member
ML
Mart Levo
Born 1965 · 60 y · board member since 02.07.2012
Board member
TO
Toomas Oper
Born 1972 · 53 y · board member since 02.07.2012
Board member

Founders

e-Business Register · 1 mo ago
KS
Kai Siinmaa
Born 1966 · 60 y · founder since 07.01.2012
Founder · 3k €

Shareholders (8)

e-Business Register · 1 mo ago
0%50%100%
Founder / management
59.5% · 2
Angel
8.0% · 2
Long tail
32.5% · 5

Annual reports (5)

e-Business Register · annual reports · 6 päeva tagasi
Revenue 2023
0 €
Employees 2023
0
YearRevenueProfitEquityAssetsEmployees
2023

Tech stack

Tehnoloogiad
Mobile carrier
+372 56950767Telia Eesti AS

Trademarks (1)

EUIPO · 1 päeva tagasi
WIZELIFE
3 classes · figurative · 01.06.2016 · 015497266
Registered

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
14.03.2026FilingHoiatusmäärus registrist kustutamiseks: majandusaasta aruanne esitamata— Ä 10164099 / M5 · Olek: Jõustunud

Connected companies

Same-person ties · e-Business Register

HealthBook OÜ is connected to 11 other companies through 3 people who hold a role here and elsewhere. The strongest tie runs through Kai Siinmaa (5 companies).

Total connections
11
via 3 people
Connecting people
3
Active here
Distinct roles
3
Board member · Founder
Strongest tie
Kai
5 companies
Via personKai Siinmaa
#ShareholderType%€
1
Kai Siinmaa
Founder / management30.75%20k €
2
Mart Levo
Founder / management28.74%19k €
3
Osaühing Alving
Long tail26.73%17k €
4
Toomas Oper
Angel4.48%3k €
5
Margus Viigimaa
Angel3.55%2k €
6
Brugal Invest OÜ
Long tail2.98%2k €
7
Osaühing Alving
Long tail2.01%1k €
8
OÜ REMARCON
Long tail0.60%386 €
9
Marge Viira
Long tail0.15%96 €
Concentration

How tightly the cap table is held. Top-N shows the combined stake of the largest N shareholders; the 80% line is the smallest group that together controls 80%; Gini is 0 when stakes are perfectly equal, 1 when one holder owns everything.

Top 1
30.8%
Top 3
86.2%
Top 5
94.3%
Top 10
100.0%
80% line
3 of 9
Gini
0.57

Dominant holder: 30.8% – non-controlling but blocking.

KS
Kai Siinmaa
Born 1966 · 60 y · shareholder since 01.09.2023
Shareholder 31% · 20k €
ML
Mart Levo
Born 1965 · 60 y · shareholder since 01.09.2023
Shareholder 29% · 19k €
OA
Osaühing AlvingLEGAL PERSON
Legal person · 11039146 · shareholder since 01.09.2023
Shareholder 27% · 17k €Shareholder 2% · 1k €
TO
Toomas Oper
Born 1972 · 53 y · shareholder since 01.09.2023
Shareholder 4% · 3k €
MV
Margus Viigimaa
Born 1958 · 68 y · shareholder since 01.09.2023
Shareholder 4% · 2k €
BI
Brugal Invest OÜLEGAL PERSON
Legal person · 12629016 · shareholder since 01.09.2023
Shareholder 3% · 2k €
OR
OÜ REMARCONLEGAL PERSON
Legal person · 12399779 · shareholder since 01.09.2023
Shareholder 1% · 386 €
MV
Marge Viira
Born 1966 · 60 y · shareholder since 01.09.2023
Shareholder 0% · 96 €
0 €
−48 €
122k €
169k €
0
03.07.2024
20220 €0 €122k €169k €027.06.2023
20210 €−10 €122k €169k €027.06.2023
2020240 €521 €122k €169k €027.06.2023
20190 €−2571 €122k €168k €008.07.2020
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
5
Margus Viigimaa5
Mart Levo1
KS
Kai Siinmaa
board member, founder, shareholder 31%
5 other companies›
CompanyRoleReg. code
Baltic HC Solutions OÜ
Board memberShareholder 50%Founder
12213184
HoneyMedical OÜ
Shareholder 20%Founder
14515601
Interface OÜ
FounderShareholder 60%Board member
14438384
S5 Invest OÜ
Shareholder 16%
16422358
Viimsi Lahe Rotary Klubi
Board memberFounder
80676295
MV
Margus Viigimaa
shareholder 4%
5 other companies›
CompanyRoleReg. code
Eesti Hüpertensiooni Ühing
Board member
80134080
Eesti Personaalmeditsiini Selts
Founder
80626104
osaühing PRE CURA
ML
Mart Levo
board member, shareholder 29%
1 other company›
CompanyRoleReg. code
HML Consultancy OÜ
Shareholder 90%FounderBoard member
12953067
Board memberShareholder 100%
10351870
Sihtasutus Eesti Tervishoiu Muuseum
Supervisory board member
90012573
Tallinna Rotary Klubi
Board member
80106847

Analysis · 2023

computed from annual reports
Revenue0 €median 14k €0% of the sector median
Equity ratio72.5%
Current ratio0.01current assets cover under 1× liabilities
Compared with2022revenue 0 €

Peer group: Arvutialased konsultatsioonid, 108 trading companies that filed a report in the last three years.

Founded 2012. That year 8,026 osaühing were registered; 7,755 are still trading, or 96.6%.