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Search›Companies›OK Koolituskeskus OÜ
12946403ActivePrivate limited company

OK Koolituskeskus OÜ

Harju maakond, Tallinn, Kesklinna linnaosa, Parda tn 8·EMTAK 85599 — Other education n.e.c.·10+ years
Andmed · ···
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Overview

e-Business Register · 2 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
13.11.2015e-Business Register
Address
Parda tn 8, Kesklinna linnaosa, Tallinn, 10151 Harju maakondADS · e-Business Register
E-mail address
olgaknjazeva58@gmail.come-Business Register
Telephone
+372 55600546· Tele2 Eesti Aktsiaseltse-Business Register · TTJA NBA
Principal activity
EMTAK 85599 - Other education n.e.c.e-Business Register · ETCB
Share capital
2500,00 €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
  • Recent registrations

Data

  • 72 sources
  • Database
  • Extensions
  • MCP

Organisation

  • About
  • For journalists
  • Donation terms
  • Refunds
  • Terms
  • Privacy
  • Contact
© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Revenue 2026
21 955 €
▲ 1% vs 2024
As of 10.04.2026 (MTA)
Employees
2
2026 (MTA)
Taxes paid
769 €
State + labour taxes · 2026 (I kv)
Tax debt
0 €
As of 26.06.2026 (MTA)

Registered 13. november 2015, primary activity: Other education n.e.c.. Main place of business in Kesklinna linnaosa, Tallinn, Harju maakond.

Data · 9 sourcese-Business Register · 3 min agoMTAWeb tech scanEesti Internet
e-Business Register ↗
Revenue 2026
22k €
▲ 1% vs 2024
As of 10.04.2026 (MTA)
Employees
2
2026 (MTA)
Taxes paid
769 €
State + labour taxes · 2026 (I kv)
Tax debt
€0
As of 26.06.2026 (MTA)

Officers (2)

e-Business Register · 2 h ago
OK
Olga Knjazeva
Born 1958 · 68 y · board member since 13.11.2015
Board member
SZ
Sergei Zaržitski
Born 1976 · 50 y · board member since 13.11.2015
Board member

Founders (2)

e-Business Register · 2 h ago
OK
Olga Knjazeva
Born 1958 · 68 y · founder since 12.11.2015
Founder · 1k €
SZ
Sergei Zaržitski
Born 1976 · 50 y · founder since 12.11.2015
Founder · 1k €

Shareholders (2)

e-Business Register · 2 h ago
OK
Olga Knjazeva
Born 1958 · 68 y · shareholder since 01.09.2023
Shareholder 51% · 1k €
SZ
Sergei Zaržitski
Born 1976 · 50 y · shareholder since 01.09.2023
Shareholder 49% · 1k €

Beneficial owners (2)

e-Business Register · 2 h ago
OK
Olga Knjazeva
Born 1958 · 68 y · ultimate beneficial owner since 24.10.2018
Ultimate beneficial owner
SZ
Sergei Zaržitski
Born 1976 · 50 y · ultimate beneficial owner since 24.10.2018
Ultimate beneficial owner

Annual reports (7)

e-Business Register · annual reports · 6 päeva tagasi
Revenue 2025
22k €
↗ +0.6% vs 2024
State taxes 2025
3k €
↘ -14.2% vs 2024
Employees 2025
1
0.0% vs 2024
YearRevenueProfit

Taxes and employees

Estonian Tax and Customs Board · 10.04.2026 as of
1k €500 €0

Tech stack

Website analysis · 1 päeva tagasi
Domains (1)
grc.ee
NSZone.ee
REGZone Media OÜ
SRCEIS WHOIS
Detected technologies
Website builderTilda
AnalyticsGoogle Analytics
Tag managerGoogle Tag Manager
UI frameworkTailwind CSS

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
27.02.2026ReportEsitati 2025. aasta aruanne— Käive 21 955 €
2025
19.03.2025ReportEsitati 2024. aasta aruanne— Käive 21 823 €

Connected companies

Same-person ties · e-Business Register

OK Koolituskeskus OÜ is connected to 5 other companies through 2 people who hold a role here and elsewhere. The strongest tie runs through Olga Knjazeva (3 companies).

Total connections
5
via 2 people
Connecting people
2
Active here
Distinct roles
4
Board member · Founder
Strongest tie
Olga
3 companies
Via personOlga Knjazeva
Equity
Assets
Employees
202521 955 €36 €6k €6k €127.02.2026
202421 823 €−354 €6k €6k €119.03.2025
202339 025 €398 €6k €6k €112.05.2024
202234 531 €112 €8k €8k €113.03.2023
20216500 €5256 €8k €8k €029.03.2022
2020346 €−1085 €3k €3k €005.05.2021
20198830 €15 €4k €4k €115.05.2020
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
20222023202420252026
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2026—373 €396 €2
2025—2653 €2842 €2
2024—3092 €3307 €2
2023—3250 €3468 €2
2022—1750 €1861 €2
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 2026––––
State taxes 2026373 €–––
Taxes on workforce 2026396 €–––
Employees 20262–––
Revenue 2025––––
State taxes 2025633 €679 €662 €679 €
Taxes on workforce 2025678 €727 €710 €727 €
Employees 20252222
Revenue 2024––––
State taxes 2024848 €832 €731 €681 €
Taxes on workforce 2024905 €889 €783 €730 €
Employees 20242222
Revenue 2023––––
State taxes 2023847 €801 €801 €801 €
Taxes on workforce 2023903 €855 €855 €855 €
Employees 20232222
Revenue 2022––––
State taxes 2022–273 €538 €939 €
Taxes on workforce 2022–291 €573 €997 €
Employees 2022–222
Other
Open Graph
Mobile carrier
+372 55600546Tele2 Eesti Aktsiaselts
3
Sergei Zaržitski2
OK
Olga Knjazeva
board member, founder, shareholder 51%, ultimate beneficial owner
3 other companies›
CompanyRoleReg. code
ContactPlus OÜ
FounderShareholder 100%Ultimate beneficial ownerBoard member
11458630
Integratiivsete süsteemsete lahenduste instituut OÜ
Board member
16851544
Seam Time OÜ
Board memberFounderShareholder 100%Ultimate beneficial owner
12367450
SZ
Sergei Zaržitski
board member, founder, shareholder 49%, ultimate beneficial owner
2 other companies›
CompanyRoleReg. code
Eesti Professionaalsete Konstellööride Assotsiatsioon MTÜ
Ultimate beneficial ownerBoard member
80550832
Integratiivsete süsteemsete lahenduste instituut OÜ
FounderUltimate beneficial owner
Shareholder 100%
Board member
16851544