COMPANY PROFILE
Siebe Ostendorp GmbH
GmbH (Limited Liability Company)RhauderfehnActivities of holding companies
FOUNDED
2001
24+ years active
TRADE REGISTER
HRB 111088
Aurich
INDUSTRY
Activities of holding companies
SIZE CLASS
Small enterprise
Key questions answered
What does the company do?
Beteiligung an Unternehmen und die Verwaltung eigenen Vermögens.
Who leads it?
Gerfried Engelberg, and 2 more
How large is it?
Small enterprise
How stable is it?
Stability assessment in Plus profile
Business activity
Industry (WZ2008)
Activities of holding companies
WZ K64.20
Size class
Small
Industry (WZ2008) (3)
- K64.20Activities of holding companies
- M70.10Activities of head offices
- L68.32Management of real estate on a fee or contract basis
Business purpose
Beteiligung an Unternehmen und die Verwaltung eigenen Vermögens.
Address & Contact
Roggemannstraße 9, 26817 Rhauderfehn
Legal essentials
- Register entry
- HRB 111088 (Aurich)
- Legal form
- GmbH (Limited Liability Company)
- Founded
- 23 Aug 2001
- Share capital
- €100,000
- VAT ID
- —
- LEI
- 391200Y45Y3M7PL8RD47
- Representation rules
- —
Order shareholder list
The statutory shareholder list (§ 40 GmbHG) straight from the official register portal — who holds which shares.
Available once you sign in
Annual statements
No public annual statements on file.
Signals
Four dimensions from hard data — age, financials, HRB events, compliance. The ratings themselves are shown in the Plus profile only.
- Continuity1Available in Plus profile
- Financials2Available in Plus profile
- Management3Available in Plus profile
- Legal status4Available in Plus profile
Directors & officers
Managing directors
Gerfried Engelberg
Managing Director
Mareike Engelberg
Managing Director
Torsten Markus Kollmer
Managing Director
Research contacts
AI-powered research for publicly available contacts: name, role, phone, email, LinkedIn.
Available once you sign in
Recent news
AI-powered research across press, social media and job postings from the last six months.
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Commercial register history
No events on file.
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Location neighbours
No nearby companies found.
DEVELOPERS
Programmatic access
Three ways to access this company's data programmatically:
- AGENT-CARD
Freely accessible, no API key required — a compact JSON summary for agents and crawlers.
- API
Full, authenticated data via the Implisense API v2 (API key required).
- MCP
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What the Plus profile adds
The same page, fully populated — plus the research services locked here.
- Revenue, result and equity across every available year
- All four signals with rationale and source
- Contact search: names, roles, phone, email, LinkedIn
- Shareholder list from the official register portal
- News research covering the last six months
- The full commercial register history