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Search›Companies›Siena Venture Partners OÜ
16076815ActivePrivate limited companyEE102936470 · VAT-registered

Siena Venture Partners OÜ

Harju maakond, Tallinn, Kesklinna linnaosa, Toom-Rüütli tn 10/1-1·EMTAK 96099 — Muu teenindus·5+ years
Andmed · ···
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Overview

e-Business Register · 12 h ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
15.10.2020e-Business Register
Address
Toom-Rüütli tn 10/1-1, Kesklinna linnaosa, Tallinn, 10130 Harju maakondADS · e-Business Register
E-mail address
info@siena.eee-Business Register
Telephone
+372 56800415· Telia Eesti ASe-Business Register · TTJA NBA
Principal activity
EMTAK 96099 - Muu teeninduse-Business Register · ETCB
VAT number
ETCB · VAT-registered
Share capital
25 000,00 €e-Business Register
nimistu
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
Data · 10 sourcese-Business Register · 2 min agoMTAMTRFinantsinspektsioon
e-Business Register ↗

Registered 15. oktoober 2020, primary activity: Muu teenindus. Main place of business in Kesklinna linnaosa, Tallinn, Harju maakond.

Revenue 2026 (I kv)
5381 €
As of 10.04.2026 (MTA)
Employees
2
2026 (MTA)
Taxes paid
50 620 €
State + labour taxes · 2026 (I kv)
Tax debt
0 €
As of 26.06.2026 (MTA)
Revenue 2026 (I kv)
5k €
As of 10.04.2026 (MTA)
Employees
2
2026 (MTA)
Taxes paid
51k €
State + labour taxes · 2026 (I kv)
Tax debt
€0
As of 26.06.2026 (MTA)

Tax debt over time

MTA · last 365 d

Current debt: 0,00 €. History updated daily.

30 days
−32k €
31 965,08 € → 0,00 €
90 days
–
no data yet
365 days
–
no data yet

Officers (3)

e-Business Register · 12 h ago
LI
Lauri Isotamm
Born 1974 · 51 y · board member since 15.10.2020
Board member
RR
Rando Rannus
Born 1979 · 46 y · board member since 15.10.2020
Board member
RT
Rain Tamm
Born 1971 · 55 y · board member since 09.12.2022
Board member

Founders (2)

e-Business Register · 12 h ago
PR
Panta Rhei Ventures OÜLEGAL PERSON
Legal person · 12445397 · founder since 15.10.2020
Founder · 1k €
SH
Siena Holding OÜLEGAL PERSON
Legal person · 12658992 · founder since 15.10.2020
Founder · 2k €

Shareholders (3)

e-Business Register · 12 h ago
HE
Heisenberg Ehrmantraut OÜLEGAL PERSON
Legal person · 12791691 · shareholder since 08.07.2025
Shareholder 38% · 9k €
LL
Luarvik Luarvik OÜLEGAL PERSON
Legal person · 17218950 · shareholder since 08.07.2025
Shareholder 38% · 9k €
PR
Panta Rhei Ventures OÜLEGAL PERSON
Legal person · 12445397 · shareholder since 26.08.2024
Shareholder 25% · 6k €

Beneficial owners (4)

e-Business Register · 12 h ago
LI
Lauri Isotamm
Born 1974 · 51 y · ultimate beneficial owner since 15.10.2020
Ultimate beneficial owner
RT
Rain Tamm
Born 1971 · 55 y · ultimate beneficial owner since 15.10.2020
Ultimate beneficial owner
RR
Rando Rannus
Born 1979 · 46 y · ultimate beneficial owner since 15.10.2020
Ultimate beneficial owner
HK
Heikki Källu
Born 1974 · 52 y · ultimate beneficial owner since 29.12.2022
Ultimate beneficial owner

Subsidiaries

e-Business Register · shareholders · 12 h ago
Siena Venture Partners OÜ16076815Usaldusfond SIENA SECONDA…16258215Usaldusfond SIENA SECONDA…16460005Usaldusfond SIENA SECONDA…16718780Usaldusfond SIENA SECONDA…17251002Usaldusfond SIENA SECONDA…16124081Usaldusfond SIENA SECONDA…17034374
Siena Venture Partners OÜ is a shareholder or officer in 6 more companies.

Fund manager (2)

e-Business Register · 12 h ago
Usaldusfond SIENA SECONDARY FUND Co-Invest I
Rahaturufondide ja muude investeerimisfondide tegevus
16258215
Usaldusfond SIENA SECONDARY FUND I
Rahaturufondide ja muude investeerimisfondide tegevus
16124081

Registrar of the members (6)

e-Business Register · 12 h ago
Usaldusfond SIENA SECONDARY FUND Co-Invest I
Rahaturufondide ja muude investeerimisfondide tegevus
16258215
Usaldusfond SIENA SECONDARY FUND Co-Invest II
Usaldusfondide, investeerimisfondide ja sarnaste finantsüksuste investeerimine võlakirjadesse, väärtpaberitesse jms finantsvahenditesse
16460005
Usaldusfond SIENA SECONDARY FUND Co-Invest III
Usaldusfondide, investeerimisfondide ja sarnaste finantsüksuste investeerimine võlakirjadesse, väärtpaberitesse jms finantsvahenditesse
16718780
Usaldusfond SIENA SECONDARY FUND Co-Invest IV
Rahaturufondide ja muude investeerimisfondide tegevus
17251002
Usaldusfond SIENA SECONDARY FUND I
Rahaturufondide ja muude investeerimisfondide tegevus
16124081
Usaldusfond SIENA SECONDARY FUND II
Rahaturufondide ja muude investeerimisfondide tegevus
17034374

General partner (6)

e-Business Register · 12 h ago
Usaldusfond SIENA SECONDARY FUND Co-Invest I
Rahaturufondide ja muude investeerimisfondide tegevus
16258215
Usaldusfond SIENA SECONDARY FUND Co-Invest II
Usaldusfondide, investeerimisfondide ja sarnaste finantsüksuste investeerimine võlakirjadesse, väärtpaberitesse jms finantsvahenditesse
16460005
Usaldusfond SIENA SECONDARY FUND Co-Invest III
Usaldusfondide, investeerimisfondide ja sarnaste finantsüksuste investeerimine võlakirjadesse, väärtpaberitesse jms finantsvahenditesse
16718780
Usaldusfond SIENA SECONDARY FUND Co-Invest IV
Rahaturufondide ja muude investeerimisfondide tegevus
17251002
Usaldusfond SIENA SECONDARY FUND I
Rahaturufondide ja muude investeerimisfondide tegevus
16124081
Usaldusfond SIENA SECONDARY FUND II
Rahaturufondide ja muude investeerimisfondide tegevus
17034374

Annual reports (4)

e-Business Register · annual reports · 6 päeva tagasi
State taxes 2025
178k €
↗ +666% vs 2024
Employees 2024
1
YearRevenueProfitEquityAssetsEmployees
2024–46 471 €151k €158k €131.05.2025
2023–30 740 €178k €179k €020.06.2024
2022–65 071 €148k €148k €029.06.2023
2021–79 443 €82k €85k €007.06.2022
Original files in PDF – the full register on e-Business Register.View reports on e-Business Register

Taxes, revenue and employees

Estonian Tax and Customs Board · 10.04.2026 as of
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2026I Q5381 €33 907 €16 713 €2
2025I-IV Q4978 €177 692 €25 478 €2
2024–23 183 €3410 €2
2023–318 €11 €–
2022–89 €0 €–
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 20265k €–––
State taxes 202634k €–––
Taxes on workforce 202617k €–––
Employees 20262–––
Revenue 2025–––5k €
State taxes 20254k €27k €

Licences (1)

MTR · 11 h tagasi
Active licences
1
Finantsteenused1
Oldest · Newest
2020→2020
Oldest licenceFFA000408 · 08.12.2020
Active1 / 1
FFA000408
Finantseerimisasutusena tegutsemine
Tegevusluba
From08.12.2020
UntilOpen-ended
Valid

Tech stack

Tehnoloogiad
Mobile carrier
+372 56800415Telia Eesti AS

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
10.06.2026FilingMuutmiskanne2×expand ›hide ⌃
  • Ä 50157482 / 7 · Olek: Jõustunud
  • Kanne nr 7 · kanne
12.05.2026TaxMaksuvõlg kasvas— +31 965 € (kokku 31 965 €)
2025
10.11.2025FilingMuutmiskanne2×expand ›hide ⌃
  • Ä 50157482 / 6 · Olek: Jõustunud
  • Kanne nr 6 · kanne
08.07.2025OfficerSai osanikuks2×expand ›hide ⌃
  • Luarvik Luarvik OÜ · · 38 %
  • Heisenberg Ehrmantraut OÜ · · 38 %
31.05.2025ReportEsitati 2024. aasta aruanne
2024
27.08.2024FilingMuutmiskanne2×expand ›hide ⌃
  • Ä 50157482 / 5 · Olek: Jõustunud
  • Kanne nr 5 · kanne
26.08.2024OfficerSai osanikuks— Panta Rhei Ventures OÜ · · 25 %

Connected companies

Same-person ties · e-Business Register

Siena Venture Partners OÜ is connected to 51 other companies through 4 people who hold a role here and elsewhere. The strongest tie runs through Rain Tamm (17 companies).

Total connections
51
via 4 people
Connecting people
4
Active here
Distinct roles
2
Board member · Ultimate beneficial owner
Strongest tie
Rain
17 companies
Via personRain Tamm17Lauri Isotamm15Rando Rannus12Heikki Källu7
RT
Rain Tamm
board member, ultimate beneficial owner
17 other companies›
CompanyRoleReg. code
AS LHV Group
Founder
11098261
AS LHV Pank
Founder
10539549
Fotograafia Tallinn OÜ
98k €
49k €
Taxes on workforce 20254k €4k €4k €13k €
Employees 20252222
Revenue 2024––––
State taxes 20241k €10k €755 €11k €
Taxes on workforce 2024363 €159 €379 €3k €
Employees 2024––22
Revenue 2023––––
State taxes 2023–310 €–8 €
Taxes on workforce 2023–11 €–0 €
Employees 2023––––
Revenue 2022––––
State taxes 202289 €–––
Taxes on workforce 20220 €–––
Employees 2022––––
Ultimate beneficial ownerShareholder 2%
14370427
GILD IB OÜ
Ultimate beneficial owner
11884290
Luarvik Luarvik OÜ
Board memberFounderUltimate beneficial ownerShareholder 100%
17218950
MAI Baltics Advisory OÜ
Ultimate beneficial owner
12709790
Oaklins Estonia OÜ
FounderUltimate beneficial ownerShareholder 30%
16422080
Osaühing Kombain & Ko.
Board memberUltimate beneficial ownerShareholder 100%
10588508
OÜ CEE PE Holding
Ultimate beneficial ownerBoard member
11713708
Siena Holding OÜ
Board memberFounderShareholder 33%Ultimate beneficial owner
12658992
Teamscope OÜ
Supervisory board member
12871817
Usaldusfond SIENA SECONDARY FUND Co-Invest I
Ultimate beneficial owner
16258215
Usaldusfond SIENA SECONDARY FUND Co-Invest II
Ultimate beneficial owner
16460005
Usaldusfond SIENA SECONDARY FUND Co-Invest III
Ultimate beneficial owner
16718780
Usaldusfond SIENA SECONDARY FUND Co-Invest IV
Ultimate beneficial owner
17251002
Usaldusfond SIENA SECONDARY FUND I
Ultimate beneficial owner
16124081
… and 1 more · see on the person page ↗
LI
Lauri Isotamm
board member, ultimate beneficial owner
15 other companies›
CompanyRoleReg. code
AS LHV Group
Founder
11098261
Heisenberg Ehrmantraut OÜ
FounderUltimate beneficial ownerShareholder 100%Board member
12791691
Likviidsus SPV OÜ
Ultimate beneficial owner
16163402
MAI Baltics Advisory OÜ
FounderUltimate beneficial ownerShareholder 50%
12709790
NOEP Distillery OÜ
Ultimate beneficial owner
16863476
Oaklins Estonia OÜ
FounderUltimate beneficial ownerShareholder 30%
16422080
osaühing APSPROG
Shareholder 17%
10152260
Siena Holding OÜ
Board memberFounderShareholder 33%Ultimate beneficial owner
12658992
Tallinn, F. R. Kreutzwaldi tn 7 // Raua tn 16 korteriühistu
Board member
80351854
Usaldusfond SIENA SECONDARY FUND Co-Invest I
Ultimate beneficial owner
16258215
Usaldusfond SIENA SECONDARY FUND Co-Invest II
Ultimate beneficial owner
16460005
Usaldusfond SIENA SECONDARY FUND Co-Invest III
Ultimate beneficial owner
16718780
Usaldusfond SIENA SECONDARY FUND Co-Invest IV
Ultimate beneficial owner
17251002
Usaldusfond SIENA SECONDARY FUND I
Ultimate beneficial owner
16124081
Usaldusfond SIENA SECONDARY FUND II
Ultimate beneficial owner
17034374
RR
Rando Rannus
board member, ultimate beneficial owner
12 other companies›
CompanyRoleReg. code
Eesti Era- ja Riskikapitali Assotsiatsioon
Board member
80295682
EstBAN Nordic Angels II OÜ
Ultimate beneficial ownerBoard member
14580030
Likviidsus SPV OÜ
Board memberUltimate beneficial owner
16163402
Mittetulundusühing Asutajad
Founder
80305937
Panta Rhei Ventures OÜ
Board memberFounderUltimate beneficial ownerShareholder 100%
12445397
Rabbit Hole OÜ
Board memberUltimate beneficial owner
14411876
Usaldusfond SIENA SECONDARY FUND Co-Invest I
Ultimate beneficial owner
16258215
Usaldusfond SIENA SECONDARY FUND Co-Invest II
Ultimate beneficial owner
16460005
Usaldusfond SIENA SECONDARY FUND Co-Invest III
Ultimate beneficial owner
16718780
Usaldusfond SIENA SECONDARY FUND Co-Invest IV
Ultimate beneficial owner
17251002
Usaldusfond SIENA SECONDARY FUND I
Ultimate beneficial owner
16124081
Usaldusfond SIENA SECONDARY FUND II
Ultimate beneficial owner
17034374
HK
Heikki Källu
ultimate beneficial owner
7 other companies›
CompanyRoleReg. code
GILD IB OÜ
Founder
11884290
MAI Baltics Advisory OÜ
Board memberFounderUltimate beneficial ownerShareholder 50%
12709790
Oaklins Estonia OÜ
FounderUltimate beneficial ownerShareholder 30%
16422080
Osaühing Eralton
Board memberUltimate beneficial ownerShareholder 100%
10806193
OÜ Superia
Shareholder 2%
11354037
Pühaste Pruulikoda OÜ
Shareholder 0%
12664596
Siena Holding OÜ
FounderShareholder 33%Ultimate beneficial owner
12658992