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Search›Companies›OÜ Mikrokivi
16287587ActivePrivate limited company

OÜ Mikrokivi

Tartu maakond, Tartu linn, Tartu linn, Narva mnt 18·EMTAK 72101 — Research and experimental development on natural sciences and engineering·4+ years
Andmed · ···
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Overview

e-Business Register · 17 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
09.08.2021e-Business Register
Address
Narva mnt 18, Tartu linn, Tartu linn, 51009 Tartu maakondADS · e-Business Register
E-mail address
minaknuthhelekivi@outlook.come-Business Register
Telephone
+372 56061803· Elisa Eesti ASe-Business Register · TTJA NBA
Principal activity
EMTAK 72101 - Research and experimental development on natural sciences and engineeringe-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
  • FAQ
  • For journalists
  • Donation terms
  • Refunds
  • Terms
  • Privacy
  • Contact
© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Revenue 2023
20 774 €
▲ 92% vs 2024
As of 10.04.2026 (MTA)
Employees
–
2023 (MTA)
Taxes paid
543 €
State + labour taxes · 2023 (I-IV kv)
Tax debt
0 €
As of 27.06.2026 (MTA)

Registered 9. august 2021, primary activity: Research and experimental development on natural sciences and engineering. Main place of business in Tartu linn, Tartu linn, Tartu maakond.

Data · 8 sourcese-Business Register · 2 min agoMTARTK
e-Business Register ↗
Revenue 2023
21k €
▲ 92% vs 2024
As of 10.04.2026 (MTA)
Employees
–
2023 (MTA)
Taxes paid
543 €
State + labour taxes · 2023 (I-IV kv)
Tax debt
€0
As of 27.06.2026 (MTA)

Officers

e-Business Register · 17 h ago
KH
Knuth Helekivi
Born 2000 · 25 y · board member since 09.08.2021
Board member

Founders

e-Business Register · 17 h ago
KH
Knuth Helekivi
Born 2000 · 25 y · founder since 08.08.2021
Founder · 3k €

Shareholders

e-Business Register · 17 h ago
KH
Knuth Helekivi
Born 2000 · 25 y · shareholder since 02.09.2023
Shareholder 100% · 3k €

Beneficial owners

e-Business Register · 17 h ago
KH
Knuth Helekivi
Born 2000 · 25 y · ultimate beneficial owner since 09.08.2021
Ultimate beneficial owner

Annual reports (4)

e-Business Register · annual reports · 19 h tagasi
Revenue 2025
21k €
↗ +91.8% vs 2024
Employees 2025
0
YearRevenueProfitEquityAssetsEmployees

Taxes and employees

Estonian Tax and Customs Board · 10.04.2026 as of
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2023—255 €288 €–
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 2023–

Tech stack

Tehnoloogiad
Mobile carrier
+372 56061803Elisa Eesti AS

State-sector payments (3 · 745 €)

RTK Makseandmik · 15.05.2026
Transactions
3
2024–2025 · 2 years
Total amount
745 €
avg 248,33 €
Buyers
2
State and municipal bodies
Latest
22.12.2025
400 € · Tartu Ringkonnakohus

2025: 565 € · 2024: 180 €

BuyerTxAmountShare
Tartu Ringkonnakohus
74001972
1

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
31.03.2026ReportEsitati 2025. aasta aruanne— Käive 20 774 €
2025
05.05.2025ReportEsitati 2024. aasta aruanne— Käive 10 829 €

Connected companies

Same-person ties · e-Business Register

OÜ Mikrokivi is connected to 2 other companies through 1 person who hold a role here and elsewhere. The strongest tie runs through Knuth Helekivi (2 companies).

Total connections
2
via 1 person
Connecting people
1
Active here
Distinct roles
4
Board member · Founder
Strongest tie
Knuth
2 companies
Via personKnuth Helekivi
202520 774 €5804 €21k €21k €031.03.2026
202410 829 €4723 €15k €15k €005.05.2025
202313 354 €6749 €10k €11k €113.05.2024
20224073 €3497 €3k €3k €021.03.2023
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
–
–
–
State taxes 2023–––255 €
Taxes on workforce 2023–––288 €
Employees 2023––––
400 €
Tartu Ülikool
74001073
2
345 €
20252 transactions · 565 €
22.122025
Tartu Ringkonnakohus74001972
TÖÖJÕUKULUD · Kohus
400 €
17.032025
Tartu Ülikool74001073
MAJANDAMISKULUD · Kolmanda taseme haridus
165 €
20241 transaction · 180 €
27.112024
Tartu Ülikool74001073
MAJANDAMISKULUD · Kolmanda taseme haridus
180 €
2
KH
Knuth Helekivi
board member, founder, shareholder 100%, ultimate beneficial owner
2 other companies›
CompanyRoleReg. code
Tartu linn, Kannikese tn 6 // Nisu tn 33 korteriühistu
Board member
80087914
Teadusteater OÜ
Ultimate beneficial ownerShareholder 1%
14031814