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Search›Persons›Mihkel Hiielaid
MH
39307075233Born 07.07.1993 · 32 y

Mihkel Hiielaid

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

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nimistu
Estonia's public business register
HomeViewsIndustriesSourcesAbout

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
4active companies5years active
Board member
4
companies
Ultimate beneficial owner
2
companies
Shareholder
1
companies
Founder
1
companies
Top role
Hiimek OÜ
Shareholder + Board member + Ultimate beneficial owner + Founder
since 17.05.2021 · 5 y
Latest activity
O3 Inseneribüroo OÜ
Ultimate beneficial owner + Board member
since 30.01.2026

Career timeline

e-Business Register
2021202320252026Hiimek OÜO3 Energy OÜO3 Inseneribüroo OÜO3 Technology OÜosanikjuhatuse_liigekasusaajaasutajajuhatuse_liigekasusaajajuhatuse_liigejuhatuse_liige
Board memberFounder

History

e-Business Register · last 2 years
2026
30.01.2026OfficerLisati tegelikuks kasusaajaks— O3 Inseneribüroo OÜ · O3 Inseneribüroo OÜ
2025
05.05.2025OfficerAstus juhatusse2×expand ›hide ⌃
  • O3 Inseneribüroo OÜ · O3 Inseneribüroo OÜ
  • O3 Energy OÜ · O3 Energy OÜ

Activity overview

e-Business Register
Roles by type
Board member4
Founder1
Shareholder1
Ultimate beneficial owner2
Companies by sector
Professional, scientific and technical activities4
Companies joined per year

Companies (4)

e-Business Register
OT
O3 Technology OÜ14062364Active
Kristiine linnaosa, Tallinn, Harju maakond·EMTAK 71121
Board member · 24.04.2024
2y
active
1,5m €
OI
O3 Inseneribüroo OÜ12321790Active
Kuressaare linn, Saaremaa vald, Saare maakond·
Shareholder
Beneficial owner
Supervisory board
  • Hiimek OÜ – osanik (2023-09-01 – now), juhatuse_liige (2021-05-18 – now), kasusaaja (2021-05-18 – now), asutaja (2021-05-17 – now)
  • O3 Energy OÜ – juhatuse_liige (2025-05-05 – now)
  • O3 Inseneribüroo OÜ – kasusaaja (2026-01-30 – now), juhatuse_liige (2025-05-05 – now)
  • O3 Technology OÜ – juhatuse_liige (2024-04-24 – now)
2
1
0
202120232025
EMTAK 71121
Ultimate beneficial owner · 30.01.2026Board member · 05.05.2025
1y
active
683k €
HO
Hiimek OÜ16232043Active
Pehka küla, Haljala vald, Lääne-Viru maakond·EMTAK 71121
Shareholder 100% · 01.09.2023Board member · 18.05.2021Ultimate beneficial owner · 18.05.2021Founder · 17.05.2021
5y
active
18k €
OE
O3 Energy OÜ14291372Active
Kristiine linnaosa, Tallinn, Harju maakond·EMTAK 71121
Board member · 05.05.2025
1y
active
5k €