O4 & Partners
O4 & Partners is a multi-family office headquartered in Maarssen. The firm provides comprehensive wealth management and investment advisory services to families seeking to preserve and grow their capital across generations.
O4 & Partners
O4 & Partners is a multi-family office headquartered in Maarssen. The firm provides comprehensive wealth management and investment advisory services to families seeking to preserve and grow their capital across generations. With a focus on tailored solutions, O4 & Partners supports clients in areas such as asset allocation, succession planning, and philanthropic initiatives—enables families to navigate complex financial landscapes with discretion and strategic insight.
General information
Firm type
Multi Family Office
Year founded
—
AUM
—
Location
Region
Europe
Country
—
City
Maarssen
Corporate office
—
Frequently asked questions
What is O4 & Partners?
O4 & Partners is a multi family office headquartered in Maarssen.
Where is O4 & Partners headquartered?
O4 & Partners is headquartered in Maarssen, in the Europe region.
What does Altss track for O4 & Partners?
Altss maintains an OSINT-verified profile of O4 & Partners covering investment focus (ESG policy, ticket size, target IRR, currency preference, regional focuses, industry focuses, technological focuses), team (service providers and advisors), deals (company deals and fund commitments), assets (real estate, public market positions, private companies, art and cultural holdings, philanthropy and foundations), and network (club memberships, associations, and event participation). Detailed values are available to Altss subscribers.
What type of firm is O4 & Partners?
O4 & Partners is classified by Altss as a Multi Family Office within the Europe region.
How does Altss source intelligence on O4 & Partners?
Altss combines OSINT (open-source intelligence) with regulatory filings, public disclosures, and licensed data partners. Source provenance is tracked to support compliance-ready research workflows.
How fresh is the Altss profile for O4 & Partners?
O4 & Partners's profile is part of Altss's continuous-refresh dataset, with a full update cycle at least every 30 days and priority changes applied as new information is verified.
Company types
Confirmed
Pipeline
Indicated
Negative
Industry focuses
Confirmed
Pipeline
Indicated
Negative
Regional focuses
Confirmed
Pipeline
Indicated
Negative
Technological focuses
Confirmed
Pipeline
Indicated
Negative
Get access to Altss to unlock details
Get accessInvestment stages
Confirmed
Pipeline
Indicated
Negative
Emerging interests
Hard exclusions
ESG policy
Direct deal program
Emerging manager LP program
Get access to Altss to unlock details
Get accessManager maturity preference
Confirmed
Indicated
Ticket size (USD M, min/max)
Preferred fund size (USD M, min/max)
Investment horizon (years, min/max)
Target IRR (%)
Max leverage
Liquidity terms
Currency preference
Get access to Altss to unlock details
Get accessPhilanthropy-only themes
Political donations
Service Providers & Advisors
| Category | Firm | Years Active | Primary Contact |
|---|---|---|---|
Company Deals
| Date | Company | Type | Sector | Geography | Role | Amount | Deal Lead | Co-investors | Insight |
|---|---|---|---|---|---|---|---|---|---|
Get access to Altss to unlock details
Get accessFund Commitments
| Date | Fund | Strategy | Geography | Role | Fund size | Vintage |
|---|---|---|---|---|---|---|
Club Memberships and Associations & Advisors
| Organization | Role | Since | Notes |
|---|---|---|---|
Get access to Altss to unlock details
Get accessEvent & Conference Participation
| Event | Role | Date | Location |
|---|---|---|---|
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: