HGDF Familienholding
HGDF Familienholding is a single-family office headquartered in Flensburg. The firm manages and invests the assets of the Dethleffsen family, whose business roots in Germany trace back nine generations.

HGDF Familienholding
HGDF Familienholding is a single-family office headquartered in Flensburg. The firm manages and invests the assets of the Dethleffsen family, whose business roots in Germany trace back nine generations. HGDF Familienholding focuses on supporting stable business models and growth industries through direct investments and active ownership—seeks to preserve family legacy while fostering sustainable value creation across its diversified portfolio.
General information
Firm type
Single Family Office
Year founded
—
AUM
—
Location
Region
Europe
Country
—
City
Flensburg
Corporate office
—
Frequently asked questions
What is HGDF Familienholding?
HGDF Familienholding is a single family office headquartered in Flensburg.
Where is HGDF Familienholding headquartered?
HGDF Familienholding is headquartered in Flensburg, in the Europe region.
What does Altss track for HGDF Familienholding?
Altss maintains an OSINT-verified profile of HGDF Familienholding 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 HGDF Familienholding?
HGDF Familienholding is classified by Altss as a Single Family Office within the Europe region.
How does Altss source intelligence on HGDF Familienholding?
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 HGDF Familienholding?
HGDF Familienholding'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
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Get accessInvestment stages
Confirmed
Pipeline
Indicated
Negative
Emerging interests
Hard exclusions
ESG policy
Direct deal program
Emerging manager LP program
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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
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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 |
|---|---|---|---|---|---|---|---|---|---|
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Get accessFund Commitments
| Date | Fund | Strategy | Geography | Role | Fund size | Vintage |
|---|---|---|---|---|---|---|
Club Memberships and Associations & Advisors
| Organization | Role | Since | Notes |
|---|---|---|---|
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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.
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