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Address: Parda tn 8, 10151 Tallinn, Estonia
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© 2026 Nimistu MTÜ. License CC-BY-SA 4.0 · details
Search›Persons›Tatjana Boiko
TB
46905290305Born 29.05.1969 · 56 y

Tatjana Boiko

Data is aggregated from the Business Register's open data. Every role shows its source and date.

Datae-Business Register
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ET/EN/RU
EN
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nimistuEstonia's public business register
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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
7active companies13years active
Liquidator
3
companies
Founder
3
companies
Board member
3
companies
Ultimate beneficial owner
3
companies
Shareholder
2
companies
Top role
Rationem OÜ
Shareholder + Ultimate beneficial owner + Board member + Founder
since 01.06.2012 · 13 y
Latest activity
Blockeys DEX OÜ
Liquidator
since 10.02.2026

Career timeline

e-Business Register
20122016202020242026Applied Biochemistry Consulti…Blockeys DEX OÜInterTrans OÜMTÜ PolliannaOptimaFin OÜRationem OÜSerenity Platform OÜlikvideerijalikvideerijamenetlusdok_padev_isikkasusaaja

History

e-Business Register · last 2 years
2026
10.02.2026OfficerSai likvideerijaks— Blockeys DEX OÜ · Blockeys DEX OÜ
16.01.2026OfficerSai likvideerijaks— Serenity Platform OÜ · Serenity Platform OÜ
2025
16.12.2025OfficerSai likvideerijaks— Applied Biochemistry Consulting OÜ · Applied Biochemistry Consulting OÜ
2024
11.11.2024OfficerSai osanikuks

Activity overview

e-Business Register
Roles by type
Board member3
Founder3
Shareholder2
Ultimate beneficial owner3
Liquidator3
Recipient for procedural documents1
Companies by sector

Companies (7)

e-Business Register
OO
OptimaFin OÜ17111324Active
Muraste küla, Harku vald, Harju maakond·EMTAK 69202
Founder · 11.11.2024Board member · 11.11.2024Ultimate beneficial owner · 11.11.2024Shareholder 100% · 11.11.2024
1y
active
23k €
IO
juhatuse_liigeasutajaasutajajuhatuse_liigekasusaajaosanikosanikkasusaajajuhatuse_liigeasutajalikvideerija
Board memberFounderShareholderBeneficial ownerSupervisory board
  • Applied Biochemistry Consulting OÜ – likvideerija (2025-12-16 – now)
  • Blockeys DEX OÜ – likvideerija (2026-02-10 – now)
  • InterTrans OÜ – menetlusdok_padev_isik (2017-12-12 – now)
  • MTÜ Pollianna – kasusaaja (2018-09-07 – now), juhatuse_liige (2014-10-28 – now), asutaja (2014-10-21 – now)
  • OptimaFin OÜ – asutaja (2024-11-11 – now), juhatuse_liige (2024-11-11 – now), kasusaaja (2024-11-11 – now), osanik (2024-11-11 – now)
  • Rationem OÜ – osanik (2023-09-01 – now), kasusaaja (2018-09-07 – now), juhatuse_liige (2012-06-01 – now), asutaja (2012-06-01 – now)
  • Serenity Platform OÜ – likvideerija (2026-01-16 – now)
— OptimaFin OÜ · OptimaFin OÜ · 100 %
11.11.2024OfficerLisati tegelikuks kasusaajaks— OptimaFin OÜ · OptimaFin OÜ
11.11.2024OfficerAsutas ettevõtte— OptimaFin OÜ · OptimaFin OÜ
11.11.2024OfficerAstus juhatusse— OptimaFin OÜ · OptimaFin OÜ
Information and communication3
Professional, scientific and technical activities2
Education1
Transportation and storage1
Companies joined per year
210
201220192026
InterTrans OÜ
12193046
Active
Männiku küla, Saku vald, Harju maakond·EMTAK 52229
Recipient for procedural documents · 12.12.2017
8y
active
22k €
RO
Rationem OÜ12296566Active
Muraste küla, Harku vald, Harju maakond·EMTAK 69202
Shareholder 100% · 01.09.2023Ultimate beneficial owner · 07.09.2018Board member · 01.06.2012Founder · 01.06.2012
13y
active
14k €
AB
Applied Biochemistry Consulting OÜ14285667Active
Mustamäe linnaosa, Tallinn, Harju maakond·EMTAK 85519
Liquidator · 16.12.2025
12k €
MP
MTÜ Pollianna80376587Active
Mustamäe linnaosa, Tallinn, Harju maakond·EMTAK 63911
Ultimate beneficial owner · 07.09.2018Board member · 28.10.2014Founder · 21.10.2014
11y
active
SP
Serenity Platform OÜ16457687Active
Kesklinna linnaosa, Tallinn, Harju maakond·EMTAK 62101
Liquidator · 16.01.2026
BD
Blockeys DEX OÜ12349015Active
Kesklinna linnaosa, Tallinn, Harju maakond·EMTAK 62021
Liquidator · 10.02.2026
0 €