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Multi Family OfficeInvests through funds, not into companiesLAST VERIFIED Oct 2026 · 4 SOURCES

Family office in Maarssen founded in 2008 by Jeroen Knol, advising wealthy entrepreneurs on investment strategy, tax and legal structure, with an administration office.

Identity

HEADQUARTERS
Maarssen, Netherlands
FOUNDED
2008

Overview

O4 & Partners is a family office in Maarssen (KvK 30245863) founded in 2008 by Jeroen Knol, formerly with private banks. It supports wealthy clients in all matters of owning wealth, from a strategic wealth plan and investment strategy to tax, estate planning and the legal structure, and runs an administration office added in 2013. Its staff handle tasks such as subscriptions to private equity funds and quarterly reporting for clients.

People

  • Jeroen Knol
    Partner and founder · source

Frequently asked questions

O4 & Partners is a multi family office based in Maarssen, the Netherlands, founded in 2008.

O4 & Partners does not publicly state whether it puts its own money into companies or invests through funds.

Key people at O4 & Partners include Jeroen Knol (Partner and founder).