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Search›Companies›Seron OÜ
16814354ActivePrivate limited company

Seron OÜ

Tartu maakond, Tartu linn, Tartu linn, Kummeli tn 8a-23·EMTAK 68111 — Buying and selling of own real estate·3+ years
Andmed · ···
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Overview

e-Business Register · 2 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
08.09.2023e-Business Register
Address
Kummeli tn 8a-23, Tartu linn, Tartu linn, 50304 Tartu maakondADS · e-Business Register
E-mail address
karl.ruusmaa@gmail.come-Business Register
Principal activity
EMTAK 68111 - Buying and selling of own real estatee-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
  • Activity licences
  • Recent registrations

Data

  • 78 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 €
As of 10.10.2026 (MTA)
Employees
–
2025 (MTA)
Taxes paid
32 €
State + labour taxes · 2025 I kv
Tax debt
0 €
As of 09.11.2026 (MTA)

Registered 8. september 2023, primary activity: Buying and selling of own real estate. Main place of business in Tartu linn, Tartu linn, Tartu maakond.

Data · 6 sourcese-Business Register · just nowMTA
e-Business Register ↗
Revenue 2025
0 €
As of 10.10.2026 (MTA)
Employees
–
2025 (MTA)
Taxes paid
32 €
State + labour taxes · 2025 (I kv)
Tax debt
€0
As of 09.11.2026 (MTA)

Officers

e-Business Register · 2 h ago
KR
Karl Ruusmaa
Born 1994 · 31 y · board member since 14.10.2026
Board member

Founders

e-Business Register · 2 h ago
KR
Karl Ruusmaa
Born 1994 · 31 y · founder since 07.09.2023
Founder · 3k €

Shareholders

e-Business Register · 2 h ago
KR
Karl Ruusmaa
Born 1994 · 31 y · shareholder since 08.09.2023
Shareholder 100% · 3k €

Annual reports (2)

e-Business Register · annual reports · 4 h tagasi
Revenue 2025
0 €
Employees 2025
0
YearRevenueProfitEquityAssetsEmployees
2025

Taxes and employees

Estonian Tax and Customs Board · 10.10.2026 as of
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2025—32 €0 €–
2024—12 €0 €–
Quarterly breakdown
YearQ1Q2Q3

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
14.10.2026OfficerAstus juhatusse— Karl Ruusmaa
14.10.2026FilingMuutmiskanne2×expand ›hide ⌃
  • Ä 50236676 / 5 · Olek: Jõustunud
  • Kanne nr 5 · kanne
13.01.2026ReportEsitati 2025. aasta aruanne— Käive 0 €
2025

Connected companies

Same-person ties · e-Business Register

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

Total connections
2
via 1 person
Connecting people
1
Active here
Distinct roles
3
Board member · Founder
Strongest tie
Karl
2 companies
Via personKarl Ruusmaa
0 €
−1215 €
748 €
753 €
0
13.01.2026
20240 €−537 €2k €14k €027.03.2025
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register
Q4
Revenue 2025––––
State taxes 202532 €–––
Taxes on workforce 20250 €–––
Employees 2025––––
Revenue 2024––––
State taxes 2024–12 €––
Taxes on workforce 2024–0 €––
Employees 2024––––
17.12.2025
FilingMuutmiskanne TsMS § 595¹ lg 1 alusel2×expand ›hide ⌃
  • Ä 50236676 / 4 · Olek: Jõustunud
  • Kanne nr 4 · kanne
13.11.2025FilingMuutmiskanne2×expand ›hide ⌃
  • Ä 50236676 / 3 · Olek: Jõustunud
  • Kanne nr 3 · kanne
27.03.2025ReportEsitati 2024. aasta aruanne— Käive 0 €
2
KR
Karl Ruusmaa
board member, founder, shareholder 100%
2 other companies›
CompanyRoleReg. code
Korply OÜ
Board memberShareholder 100%Founder
14808556
OÜ RUUSMAA KINNISVARA
Shareholder 33%
10912274

Analysis · 2025

computed from annual reports
Revenue0 €median 150k €0% of the sector median
Equity ratio99.3%
Current ratio150.60
Compared with2024revenue 0 €

Peer group: Enda kinnisvara ost ja müük, 807 trading companies that filed a report in the last three years.

Founded 2023. That year 19,358 osaühing were registered; 18,725 are still trading, or 96.7%.