ContactTerms
ET/EN/RU
EN
EestiEnglishРусский
nimistuEstonia'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
ContactTerms
ET/EN/RU
EN
EestiEnglishРусский
Search›Companies›Keystone Advisers Group OÜ
11973071ActivePrivate limited companyEE101390415 · VAT-registered

Keystone Advisers Group OÜ

Harju maakond, Tallinn, Kesklinna linnaosa, Rävala pst 3·EMTAK 70201 — Business and other management consultancy activities·15+ years
Andmed · ···
On this page
SanctionsOverviewOfficersShareholdersFoundersBeneficial ownersOther rolesForeign parentSubsidiariesFinancialsTax filingsPledgesPledges as creditorLicencesNoticesTech stackCourt rulingsTVK decisionsBlacklistLabour inspectorateHazardous facilityDPA decisionsTax-deductibleEU lobby registerTrademarksPatentsReal estateVehiclesGrantsProcurementsState paymentsActivityConnected companies
Extension

Right in search

nimistu card above Google, Bing and DuckDuckGo results.

Chrome→Firefox→Edge→
Free · ~14 KB
See the extension →

Overview

e-Business Register · 26 min ago
Registry code
e-Business Register
Legal form
Private limited company
Registered
30.07.2010e-Business Register
Address
Rävala pst 3, Kesklinna linnaosa, Tallinn, 10143 Harju maakondADS · e-Business Register
E-mail address
info@keystoneadvisers.eee-Business Register
Telephone
+372 6817040· Telia Eesti ASe-Business Register · TTJA NBA
Principal activity
EMTAK 70201 - Business and other management consultancy activitiese-Business Register · ETCB
VAT number
ETCB · VAT-registered
Share capital
2556,00 €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
PEP (1)
Data · 11 sourcese-Business Register · 3 min agoMTAEUIPOWeb tech scanEesti Internet
e-Business Register ↗

Registered 30. juuli 2010, primary activity: Business and other management consultancy activities. Main place of business in Kesklinna linnaosa, Tallinn, Harju maakond.

Revenue 2026 (I kv)
20 455 €
▲ 16% vs 2025 I kv
As of 10.04.2026 (MTA)
Employees
–
2026 (MTA)
Taxes paid
2580 €
State + labour taxes · 2026 (I kv)
Tax debt
3898,29 €
As of 26.06.2026 (MTA)
Revenue 2026 (I kv)
20k €
▲ 16% vs 2025 I kv
As of 10.04.2026 (MTA)
Employees
–
2026 (MTA)
Taxes paid
3k €
State + labour taxes · 2026 (I kv)
Tax debt
3898,29 €
As of 26.06.2026 (MTA)

Tax debt over time

MTA · last 365 d
Current 3898,29 €max 4k €
11 May 20263 Jun 202627 Jun 2026
30 days
+1k €
2627,32 € → 3898,29 €
90 days
–
no data yet
365 days
–
no data yet

Officers

e-Business Register · 26 min ago
TK
Tõnis-Martin KonsPEP
Born 1977 · 49 y · board member since 30.07.2010
Board member

Founders

e-Business Register · 26 min ago
KA
Keystone Advisers osaühingLEGAL PERSON
Legal person · 11179462 · founder since 30.07.2010
Founder

Shareholders

e-Business Register · 26 min ago
OM
OÜ Mindmills InvestmentsLEGAL PERSON
Legal person · 11021123 · shareholder since 02.09.2023
Shareholder 100% · 3k €

Beneficial owners

e-Business Register · 26 min ago
TK
Tõnis-Martin KonsPEP
Born 1977 · 49 y · ultimate beneficial owner since 30.10.2018
Ultimate beneficial owner

Subsidiaries

e-Business Register · shareholders · 26 min ago

Keystone Advisers Group OÜ is a shareholder or officer in 1 more company.

Keystone Advisers osaühing
Shareholder 100%

Annual reports (6)

e-Business Register · annual reports · 6 päeva tagasi
Revenue 2024
67k €
↗ +2.6% vs 2023
State taxes 2025
23k €
↗ +148% vs 2022
Employees 2024
3
↘ -40.0% vs 2023
YearRevenueProfitEquityAssetsEmployees
202466 500 €55 645 €187k €274k €309.07.2025
202364 800 €46 483 €131k €221k €530.06.2024
202264 800 €50 268 €85k €164k €513.07.2023
202167 509 €52 387 €
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
50k €25k €0
20222023202420252026
YearRevenue (a)State taxesTaxes on workforceEmployees (Q4)
2026I Q20 455 €2580 €0 €–
202571 003 €23 437 €0 €–
202469 950 €4507 €0 €–
202368 636 €12 280 €0 €–
202267 800 €9463 €
Quarterly breakdown
YearQ1Q2Q3Q4
Revenue 202620k €–––
State taxes 20263k €–––
Taxes on workforce 20260 €–––
Employees 2026––––
Revenue 202518k €21k €16k €16k €
State taxes 20252k €18k €

Tech stack

Website analysis · 1 päeva tagasi
Domains (1)
keystone.ee
SPFDMARC
REGElkdata OÜ
SRCEIS WHOIS
Detected technologies
OtherOpen Graph · Schema.org
Content management (CMS)WordPress
JavaScript libraryjQuery
AnalyticsGoogle Analytics
Web serverApache
UI frameworkTailwind CSS
Mobile carrier
+372 6817040Telia Eesti AS

History

last 2 years · MTA + ÄR + MTR + Procurements
2026
23.06.2026TaxMaksuvõlg kasvas— +1265 € (kokku 3898 €)
13.06.2026TaxMaksuvõlg kasvas— +6 € (kokku 2633 €)
22.05.2026TaxMaksuvõlg kasvas— +1265 € (kokku 2627 €)
19.05.2026TaxMaksuvõlg vähenes— −20 € (jäänud 1363 €)
11.05.2026TaxMaksuvõlg kasvas— +1383 € (kokku 1383 €)
2025
09.07.2025ReportEsitati 2024. aasta aruanne— Käive 66 500 €
2024
30.06.2024ReportEsitati 2023. aasta aruanne— Käive 64 800 €

Connected companies

Same-person ties · e-Business Register

Keystone Advisers Group OÜ is connected to 12 other companies through 1 person who hold a role here and elsewhere. The strongest tie runs through Tõnis-Martin Kons (12 companies).

Total connections
12
via 1 person
Connecting people
1
Active here
Distinct roles
2
Board member · Ultimate beneficial owner
Strongest tie
Tõnis-Martin
12 companies
Via personTõnis-Martin Kons12
TK
Tõnis-Martin Kons
board member, ultimate beneficial owner
12 other companies›
CompanyRoleReg. code
Erakond Parempoolsed
FounderUltimate beneficial ownerBoard member
80608655
Keystone Advisers osaühing
Ultimate beneficial owner
34k €
117k €
3
30.06.2022
202065 961 €55 542 €-18k €113k €421.02.2022
201968 591 €−437 938 €-74k €69k €415.07.2021
0 €
–
2k €
2k €
Taxes on workforce 20250 €0 €0 €0 €
Employees 2025––––
Revenue 202418k €16k €20k €16k €
State taxes 2024––3k €1k €
Taxes on workforce 2024––0 €0 €
Employees 2024––––
Revenue 202316k €19k €17k €16k €
State taxes 20231k €––11k €
Taxes on workforce 20230 €––0 €
Employees 2023––––
Revenue 202216k €19k €16k €16k €
State taxes 20222k €2k €1k €4k €
Taxes on workforce 20220 €0 €0 €0 €
Employees 2022––––
Board member
11179462
Mittetulundusühing Paremvaade
Board memberFounderUltimate beneficial owner
80580388
Mittetulundusühing Res Publica 30
Board memberUltimate beneficial owner
80167978
Mittetulundusühing Tallinn International Wine Club
Board memberFounderUltimate beneficial owner
80634960
Osaühing Eesti Avaliku Halduse Instituut
Board memberUltimate beneficial owner
10709107
OÜ BALTIC INVESTMENTS ASSOCIATES
Board memberUltimate beneficial owner
11055168
OÜ Mindmills Investments
Board memberUltimate beneficial owner
11021123
OÜ OMEX CONSULTING
Board memberUltimate beneficial owner
11024340
OÜ PT VALDUSED
Board memberFounderUltimate beneficial ownerShareholder 100%
10649397
Sihtasutus Mõttekoda Res Publica
Board member
90015028
Voxpoll OÜ
Ultimate beneficial owner
17281210