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AUM

Not disclosed

Principals

2

Principal Net Worth

$2.4B

Data Flags

Forbes Billionaires #1626 $2.4B; Wealth primarily in operating company (St1); vocal climate advocate

Anttonen Family Office

SFOHigh Confidence

Helsinki, Finland

Last verified: Jan 17, 2026

Details

Source of Wealth
Energy (St1 Nordic)
Assets Under Management
Not disclosed
Source File
research/organizations/anttonen-family-office.md
UID
fo-anttonen-family-office

Also Known As

Mika Anttonen Family OfficeAnttonen InvestmentsSt1 Family Office

Principals (2)

Mika AnttonenFounder/Chairman, St1 NordicOWNS
$2.4B
TBD-OWNS

Team Members (4)

Donald TrumpTitle TBD
WORKS_AT
Mika AnttonenTitle TBD
WORKS_AT
Nordic KnowledgeTitle TBD
WORKS_AT
Waymo IsTitle TBD
WORKS_AT

Related Entities (3)

Greencode VenturesSubsidiary

Venture capital focused on sustainability (Anttonen is connected)

St1 Nordic OySubsidiary

Major Nordic energy company; fuel retail, refining, renewables

St1 Renewable EnergySubsidiary

Renewable energy investments

Relationship Strength

Loading relationships...

Sources (5)

Changelog

  • 2026-01-17Forbes Real-Time verification - Net worth $2.4B confirmed, #1702 world, #1626 Billionaires (2025); no change from prior data
  • 2026-01-18UPGRADED to High confidence; Forbes Real-Time $2.4B #1702 world (#1626 Billionaires 2025); Forbes feature (2020), Nordic Business Forum confirm; 4+ independent sources verified
  • 2026-01-17Upgraded from Low to Medium confidence; verified principal via Forbes; removed garbage team data (Donald Trump, Waymo Is, etc.); added HQ (Helsinki); corrected net worth to $2.2B; added background on St1 and climate advocacy
  • 2026-01-15Auto-generated from principal Mika Anttonen

Engagement & Preferences