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Mare Tranquility Ventures UG (haftungsbeschränkt) UG (haftungsbeschränkt)

Berlin ·HRB 244476 Charlottenburg (Berlin)

Part 1 / 2

Structured data

Parsed, typed and queryable directly through the API.

Overview

Legal form: UG (haftungsbeschränkt)
Address: Witzlebenstraße 5
14057 Berlin
Commercial register: HRB 244476, Charlottenburg (Berlin)
Registration date: July 20, 2022
Industry: Beteiligungsgesellschaften
Managementtätigkeiten von sonstigen Holdinggesellschaften
Managementtätigkeiten von Holdinggesellschaften mit überwiegend finanziellem Anteilsbesitz
Purpose: Das Halten und Verwalten von Beteiligungen im eigenen Namen und auf eigene Rechnung, nicht als Dienstleistung für Dritte und unter Ausschluss von Tätigkeiten, die einer Erlaubnis, insbesondere nach dem Kreditwesengesetz (KWG) oder dem Kapitalanlagegesetzbuch (KAGB), bedürfen.

Financials

No published key figures are available for this company.

Authorized representatives

Willi Marlon Ibbeken since 2022 Managing Director

Ownership & holdings

Shareholders

Willi Marlon Ibbeken 100.0 % 500 €

Ultimate beneficial owners (UBOs)

1 hold ≥ 25%

1 more beneficial owners · viewable with an API key Get API key →

Holds shares in

YGO GmbH GmbH Potsdam, DEU 15.7 %

History

2022
27.07.

Change of address

Mare Tranquility Ventures UG (haftungsbeschränkt)
27.07.

Incorporation

Mare Tranquility Ventures UG (haftungsbeschränkt)
27.07.

Change of purpose

Das Halten und Verwalten von Beteiligungen im eigenen Namen und auf eigene Rechnung, nicht als Dienstleistung für Dritte und unter Ausschluss von Tätigkeiten, die einer Erlaubnis, insbesondere nach dem Kreditwesengesetz (KWG) oder dem Kapitalanlagegesetzbuch (KAGB), bedürfen.
27.07.

Change of share capital

Mare Tranquility Ventures UG (haftungsbeschränkt)
27.07.

Change of seat

Mare Tranquility Ventures UG (haftungsbeschränkt)
27.07.

Change of company name

Mare Tranquility Ventures UG (haftungsbeschränkt)
27.07.

Member entry

Willi Marlon Ibbeken · Managing Director
27.07.

Change of legal form

Unternehmergesellschaft (haftungsbeschränkt)

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Part 2 / 2

Raw data & documents

Original filings, full-text markdown and PDFs — full content via the API.

Register documents

PDF documents straight from the court register — fetched on demand via the :code endpoint.

Current extract (AD)
Chronological extract (CD)
Structured content (SI, XML)
Shareholders list
Articles of association

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Website content

Structured markdown rendering of the company's public website — perfect for enrichment and AI pipelines.

Website snapshot (auto-discovered) AI

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Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=89823fe4da5a37d6c705cddc896deda7

&features=related_persons

&features=shareholders

&features=ubos

&features=shareholdings

&features=history

curl -H 'X-API-KEY: YOUR_API_KEY' \
  "https://handelsregister.ai/api/v1/fetch-organization?q=89823fe4da5a37d6c705cddc896deda7&features=related_persons&features=shareholders&features=ubos&features=shareholdings&features=history"

# pip install handelsregister
from handelsregister import Handelsregister

client = Handelsregister(api_key="YOUR_API_KEY")  # or set HANDELSREGISTER_API_KEY
organization = client.fetch_organization(
    q="89823fe4da5a37d6c705cddc896deda7",
    features=[
        "related_persons",
        "shareholders",
        "ubos",
        "shareholdings",
        "history",
    ],
)
print(organization["name"])

// npm install handelsregister
import { Handelsregister } from 'handelsregister';

const client = new Handelsregister('YOUR_API_KEY'); // or set HANDELSREGISTER_API_KEY
const organization = await client.fetchOrganization({
  q: '89823fe4da5a37d6c705cddc896deda7',
  features: [
    'related_persons',
    'shareholders',
    'ubos',
    'shareholdings',
    'history',
  ],
});
console.log(organization.name);

// npm install handelsregister
const { Handelsregister } = require('handelsregister');

const client = new Handelsregister(process.env.HANDELSREGISTER_API_KEY);
(async () => {
  const organization = await client.fetchOrganization({
    q: '89823fe4da5a37d6c705cddc896deda7',
    features: [
      'related_persons',
      'shareholders',
      'ubos',
      'shareholdings',
      'history',
    ],
  });
  console.log(organization.name);
})();

{
    "entity_id": "<32-char hex>",
    "name": "<string>",
    "status": "<enum: ACTIVE | TERMINATED | DISSOLVED | INSOLVENT>",
    "legal_form": "<string>",
    "address": {
        "house_number": "<string>",
        "street": "<string>",
        "postal_code": "<string>",
        "city": "<string>",
        "county": "<string>",
        "state": "<string>",
        "country": "<ISO country>",
        "coordinates": {
            "latitude": "<float>",
            "longitude": "<float>"
        }
    },
    "registration": {
        "court": "<string>",
        "register_type": "<string>",
        "register_number": "<string>"
    },
    "registration_date": "<ISO date>",
    "purpose": "<string>",
    "keywords": [],
    "products_and_services": [],
    "contact_data": {
        "website": null,
        "phone_number": null,
        "email": null
    },
    "industry_classification": {
        "WZ2008": [],
        "WZ2025": [
            {
                "code": "<string>",
                "label": "<string>"
            }
        ]
    },
    "annual_financial_statements__html": [],
    "financial_kpi": [],
    "shareholders": {
        "total_capital": {
            "amount": "<float>",
            "currency": "<ISO currency>"
        },
        "entries": [
            {
                "shareholder": {
                    "entity_id": "<32-char hex>",
                    "first_name": "<string>",
                    "last_name": "<string>",
                    "birth_date": null,
                    "address": "<string>"
                },
                "contribution": {
                    "amount": "<float>",
                    "currency": "<ISO currency>"
                },
                "contribution_ratio": "<float>",
                "role": {
                    "label": "<string>",
                    "en": {
                        "long": "<string>",
                        "short": "<string>"
                    },
                    "de": {
                        "long": "<string>",
                        "short": "<string>"
                    }
                }
            }
        ],
        "history": null
    },
    "ubos": {
        "beneficial_owners": [
            {
                "person": {
                    "entity_id": "<32-char hex>",
                    "name": "<string>",
                    "birth_date": null,
                    "name_parts": {
                        "given": "<string>",
                        "family": "<string>",
                        "canonical_name": "<string>"
                    },
                    "location": {
                        "home": {
                            "city": "<string>",
                            "county": "<string>",
                            "state": "<string>",
                            "country": "<ISO country>"
                        }
                    }
                },
                "ownership_percentage": "<float>",
                "paths": [
                    {
                        "percentage": "<float>",
                        "via": []
                    }
                ]
            }
        ],
        "unresolved_beneficial_owners": [],
        "coverage": {
            "resolved_percentage": "<float>",
            "unresolved_percentage": "<int>"
        }
    },
    "balance_sheet_accounts": [],
    "representation_scheme": {
        "current": [
            "<string>"
        ],
        "history": [
            {
                "value": [
                    "<string>"
                ],
                "effective_from": "<string>",
                "effective_to": null
            }
        ]
    },
    "related_persons": {
        "current": [
            {
                "entity_id": "<32-char hex>",
                "label": "<string>",
                "role": {
                    "en": {
                        "long": "<string>",
                        "short": "<string>"
                    },
                    "de": {
                        "long": "<string>",
                        "short": "<string>"
                    }
                },
                "name": "<string>",
                "start_date": "<ISO date>",
                "end_date": null,
                "birth_date": null,
                "name_parts": {
                    "given": "<string>",
                    "family": "<string>",
                    "maiden": null,
                    "canonical_name": "<string>",
                    "previous_names": null
                },
                "location": {
                    "home": {
                        "city": "<string>"
                    }
                },
                "organization_representation_scheme": {
                    "current": [
                        "<string>"
                    ],
                    "history": [
                        {
                            "value": [
                                "<string>"
                            ],
                            "effective_from": "<string>",
                            "effective_to": null
                        }
                    ]
                },
                "role_representation_scheme": {
                    "current": [
                        "<string>"
                    ],
                    "history": [
                        {
                            "value": [
                                "<string>"
                            ],
                            "effective_from": "<string>",
                            "effective_to": null
                        }
                    ]
                }
            }
        ],
        "past": []
    },
    "profit_and_loss_account": [],
    "shareholdings": {
        "holdings": {
            "current": [
                {
                    "organization": {
                        "entity_id": "<32-char hex>",
                        "name": "<string>",
                        "status": "<enum: ACTIVE | TERMINATED | DISSOLVED | INSOLVENT>",
                        "legal_form": "<string>",
                        "address": {
                            "house_number": "<string>",
                            "street": "<string>",
                            "postal_code": "<string>",
                            "city": "<string>",
                            "county": "<string>",
                            "state": "<string>",
                            "country": "<ISO country>",
                            "coordinates": {
                                "latitude": "<float>",
                                "longitude": "<float>"
                            }
                        },
                        "registration": {
                            "court": "<string>",
                            "register_type": "<string>",
                            "register_number": "<string>"
                        }
                    },
                    "ownership": {
                        "percentage": "<float>",
                        "contribution": {
                            "amount": "<float>",
                            "currency": "<ISO currency>"
                        }
                    },
                    "as_of": "<string>"
                }
            ]
        },
        "summary": {
            "total_current": "<int>"
        }
    },
    "capital": {
        "current": {
            "amount": "<float>",
            "currency": "<ISO currency>",
            "kind": "<string>"
        },
        "history": [
            {
                "value": {
                    "amount": "<float>",
                    "currency": "<ISO currency>",
                    "kind": "<string>"
                },
                "effective_from": "<string>",
                "effective_to": null
            }
        ]
    },
    "history": [
        {
            "entity_type": "<string>",
            "name": {
                "en": "<string>",
                "de": "<string>"
            },
            "description": {
                "short": {
                    "en": "<string>",
                    "de": "<string>"
                }
            },
            "start_date": "<ISO date>",
            "details": {
                "value": {
                    "coordinate": {
                        "latitude": "<float>",
                        "longitude": "<float>"
                    },
                    "entity_type": "<string>",
                    "formatted_address": "<string>"
                },
                "linked_entities": {
                    "organization": {
                        "name": "<string>"
                    }
                },
                "value_raw": {
                    "@type": "<string>",
                    "street": "<string>",
                    "house_number": "<string>",
                    "address_street": "<string>",
                    "postal_code": "<string>",
                    "address_locality": "<string>",
                    "country_code": "<ISO country>",
                    "raw": "<string>"
                }
            }
        }
    ]
}

Base fields

entity_id string

Stable handelsregister.ai identifier (32-char hex string).

name string

Registered legal name of the entity.

status enum

ACTIVE, TERMINATED, DISSOLVED or INSOLVENT.

legal_form string

Legal form (GmbH, AG, KG, …) when available.

address object

Postal address with street, house_number, postal_code, city, county, state, country and coordinates.

registration object

registration_date date

Initial entry into the commercial register (ISO date).

purpose string

Stated business purpose (Unternehmensgegenstand).

representation_scheme object

General representation scheme: { current: [...], history: [...] } with effective_from/effective_to per version.

capital object

Registered capital: { current, history }. current carries amount, currency and kind (STAMMKAPITAL, GRUNDKAPITAL, HAFTSUMME, GENEHMIGTES_KAPITAL, BEDINGTES_KAPITAL, VARIABLES_KAPITAL — open enum); each history entry has value, effective_from and effective_to (null = still in force). change_amount on a history entry is unsigned and does not always equal the difference between two consecutive amounts, so derive increases and decreases from the amounts. Partnerships and other entities without registered capital return current: null and an empty history.

contact_data object

website, phone_number and email when available.

industry_classification object

Industry codes per WZ2008 and WZ2025 with labels.

keywords array<string>

Keywords derived from the business purpose.

products_and_services array<string>

Product and service descriptions when available.

history array<object>

Chronological log of all register changes (name, seat, capital, representation, …).

features=financial_kpi

financial_kpi array<object>

Per fiscal year: revenue, employees, active_total (balance-sheet total), net_income, material_expenses, personnel_expenses.

features=balance_sheet_accounts

balance_sheet_accounts array<object>

Per fiscal year: hierarchical balance-sheet line items from the published annual statement.

features=profit_and_loss_account

profit_and_loss_account array<object>

Per fiscal year: hierarchical profit-and-loss line items.

features=related_persons

related_persons object

Authorized representatives: { current: [...], past: [...] } — managing directors, board members, signatories. Each person carries organization_representation_scheme and role_representation_scheme (current scheme + history).

features=shareholders

shareholders object

Shareholders: { total_capital, entries: [...], history: { current_as_of, past: [...] } }. Each entry carries shareholder, contribution, contribution_ratio and role; history.past delivers previous shareholder lists with an as_of date. total_capital, contribution and contribution_ratio may be null (e.g. for partnerships).

features=ubos

ubos object

Ultimate beneficial owners: { beneficial_owners, unresolved_beneficial_owners, coverage } as recorded in the transparency register.

features=shareholdings

shareholdings object

Stakes this entity holds in others: { holdings: { current: [...] }, summary }. Each holding links another organization by entity_id.

features=publications

publications array<object>

Official commercial-register publications (date, title, full text).

features=annual_financial_statements__html

annual_financial_statements__html array<object>

Published annual statements with document_html (rendered HTML), document_type, document_title, document_date, language and year.

Profile · Financials · People · Documents

Structured data and full text — per company

From annual statements as HTML to UBO lists: enable each field individually via the features parameter. One API, all data.

Key figures Revenue, employee count, total assets, net income — per fiscal year.
Authorized representatives Current and former managing directors, board members, signatories — with roles and date ranges.
Publications Official commercial register publications including date and full text.
Gesellschafter Current shareholder structure with stakes and contributions.
Wirtschaftlich Berechtigte (UBOs) Ultimate beneficial owners as recorded in the German transparency register.
Beteiligungen Stakes this company holds in other entities.
Bilanz Full balance sheet line items from published annual statements.
Gewinn- und Verlustrechnung P&L line items per fiscal year.
Jahresabschlüsse (HTML) Published annual financial statements rendered as HTML.
Insolvenzbekanntmachungen Notices from the official insolvency registers.
News Recent mentions of the company from external news sources.

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Code · AI agents · No-code · Workflows

Plug into any stack

Whether you're building a classical API integration, an AI agent, or a no-code workflow — this data slots in.

REST API Plain GET request with an X-API-KEY header. Works with any HTTP client. Python Works with requests, httpx, or your library of choice. Node.js Standard fetch or axios — no extra SDK required. MCP Server Plug directly into Claude, Cursor, or any MCP-capable AI client. n8n Drop-in custom node for n8n workflow automations. Webhook Callable from Zapier, Make, or any webhook platform.

Use this data in your app

Grab an API key and pull this structured commercial register data straight from your application — no scraping, no PDFs.

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