Osaühing Mairon Unit

Active Registry code 10742091 OÜ Viljandi linn Registered 29 Mar 2001

Osaühing Mairon Unit is a OÜ based in Viljandi linn, registry code 10742091, status: active. Main activity: Intermediation service activities for real estate activities. Its annual report for 2025 shows revenue of €32 845 and 0 employees.

Turnover

—

State taxes

6 487 €

Labour taxes

0 €

Employees

—

Q1 2026 · data from the Tax and Customs Board (EMTA)

Position in the industry Real estate activities · EMTAK 68

Revenue · 2025 32 845 €

above 70% of companies

industry median 13 620 € · companies in the industry: 30 470
Net profit margin · 2025 80.4 %

above 88% of companies

industry median 5.9 % · companies in the industry: 25 042

Taxes and turnover

Q1 2022 – Q1 2026

Turnover, € Q1 2023: 1 194 € · −90.5% vs Q4 2022 · industry median 14 983 € · above 10% of the industry

Company
Industry median

Industry: Real estate activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Labour taxes per employee, € Q3 2022: 1 492 € · +0.0% vs Q2 2022 · industry median 585 € · above 84% of the industry

Company
Industry median

Industry: Real estate activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Employees Q3 2022: 1 · +0.0% vs Q2 2022

State taxes, € Q1 2026: 6 487 € · +27.8% vs Q2 2025

Figures by quarter
Quarter	Turnover, €	State taxes, €	Labour taxes, €	Employees
Q1 2026	—	6 487	—	—
Q2 2025	—	5 077	—	—
Q2 2024	—	5 001	283	—
Q3 2023	—	7	—	—
Q2 2023	—	355	—	—
Q1 2023	1 194	657	151	—
Q4 2022	12 573	2 648	1 428	—
Q3 2022	14 469	2 644	1 492	1
Q2 2022	22 514	2 988	1 492	1
Q1 2022	13 246	2 359	1 492	1

Financials by year

2016 – 2025

Revenue, € 2025: 32 845 € · +43.4% vs 2024 · industry median 13 620 € · above 70% of the industry

Company
Industry median

Industry: Real estate activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Net profit, € 2025: 26 416 € · +52.2% vs 2024 · industry median 283 € · above 87% of the industry

Company
Industry median

Industry: Real estate activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Net profit margin, % 2025: 80.4 % · +4.7 pp vs the year before · industry median 5.9 % · above 88% of the industry

Company
Industry median

Industry: Real estate activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Assets, € 2025: 31 902 € · +34.3% vs 2024

Equity, € 2025: 31 902 € · +35.8% vs 2024

Employees 2025: 0 · industry median 1 · above 2% of the industry

Company
Industry median

Industry: Real estate activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Financials by year
Year	Revenue, €	Net profit, €	Labour costs, €	Assets, €	Equity, €	Employees
2025	32 845	26 416	0	31 902	31 902	0
2024	22 906	17 355	0	23 760	23 486	0
2023	28 964	21 528	0	26 707	26 414	0
2022	57 974	-2 536	14 263	7 536	7 036	2
2021	69 755	52	17 594	15 220	9 572	2
2020	84 905	3 033	22 411	24 737	19 493	2
2019	98 281	12 960	22 411	41 694	32 460	2
2018	—	—	—	—	—	2
2017	—	—	—	—	—	2
2016	—	—	—	—	—	2
2015	—	—	—	—	—	2
2014	—	—	—	—	—	1
2013	—	—	—	—	—	1
2012	—	—	—	—	—	1
2011	—	—	—	—	—	1
2010	—	—	—	—	—	1
2009	—	—	—	—	—	1
2008	—	—	—	—	—	1
2007	—	—	—	—	—	2
2006	—	—	—	—	—	3
2005	—	—	—	—	—	3
2004	—	—	—	—	—	3
2003	—	—	—	—	—	3
2002	—	—	—	—	—	3
2001	—	—	—	—	—	1

Figures from the company’s own (non-consolidated) balance sheet and income statement. A loss is shown with a minus sign.

Financial ratios for 2025

Net profit margin

80.4 %

Net profit / revenue

Return on equity (ROE)

82.8 %

Net profit / equity

Return on assets (ROA)

82.8 %

Net profit / assets

Equity ratio

100.0 %

Equity / assets

Debt ratio

0.0 %

Liabilities / assets

Annual reports

PDFs from e-Äriregister

Annual reports
Year	Period	Filed	Report	Documents
2025	1 Jan 2025 – 31 Dec 2025	22 Apr 2026	Company’s own	e-Äriregister
2024	1 Jan 2024 – 31 Dec 2024	25 Mar 2025	Company’s own	e-Äriregister
2023	1 Jan 2023 – 31 Dec 2023	25 Jun 2024	Company’s own	e-Äriregister
2022	1 Jan 2022 – 31 Dec 2022	14 Jun 2023	Company’s own	e-Äriregister
2021	1 Jan 2021 – 31 Dec 2021	5 Apr 2022	Company’s own	e-Äriregister
2020	1 Jan 2020 – 31 Dec 2020	14 Jun 2021	Company’s own	e-Äriregister
2019	1 Jan 2019 – 31 Dec 2019	12 May 2020	Company’s own	e-Äriregister

Board

Maidu Mainsoo
Board member · since 2 Jan 2006

Right of representation

Any member of the management board may represent the private limited company in all transactions.

Owners

Maidu Mainsoo
Natural person · 1 600 €

62.50%
Ülle Mainsoo
Natural person · 960 €

37.50%

Beneficial owners

Maidu Mainsoo
Direct ownership · since 25 Jun 2019
Ülle Mainsoo
Direct ownership · since 25 Jun 2019

Founders and other persons

Maidu Mainsoo
Founder · 15 000 € · 29 Mar 2001
Ronalds Reuts
Founder · 10 000 € · 29 Mar 2001
Ülle Mainsoo
Founder · 15 000 € · 29 Mar 2001

Activities (EMTAK)

68311Intermediation service activities for real estate activities Main

Rulings 11

All rulings (PDF)

Rulings
Number, date	Title	Deadline	State	Document
Ä 20033185 / 7 1 Sep 2023	Amendment entry		In force 1 Sep 2023	PDF
Ä 20033185 / 6 18 Jan 2018	Amendment entry		In force 18 Jan 2018	PDF
Ä 20033185 / 5 4 Dec 2017	Amendment entry		In force 4 Dec 2017	PDF
Ä 20033185 / 4 23 Nov 2011	Amendment entry		In force 23 Nov 2011	PDF
Ä 20033185 / M3 10 Nov 2011	Ruling to eliminate deficiencies	10 Dec 2011	In force 10 Nov 2011	PDF
Ä 20033185 / M2 31 Aug 2011	Ruling to eliminate deficiencies	30 Dec 2011	In force 31 Aug 2011	PDF
Ä 20033185 / 3 16 Jun 2010	Amendment entry		In force 16 Jun 2010	PDF
Ä 20033185 / M1 14 Jun 2010	Ruling to eliminate deficiencies	20 Jul 2010	In force 14 Jun 2010	PDF
Ä 33185 / 2 28 Dec 2008	Deletion of activities from the registry card		In force 28 Dec 2008	PDF
Ä 33185 2 Jan 2006	Change of registry district		Confirmed 2 Jan 2006	PDF
Ä 15128 / 2 2 Jan 2006	Change of registry district		Confirmed 2 Jan 2006	PDF

Sources: e-Äriregister and EMTA. Data updated 31 Oct 2026. Open at the source ↗ · Report an error in the data