active

AVENTUM GmbH GmbH

Siegen ·HRB 5139 Siegen

Part 1 / 2

Structured data

Parsed, typed and queryable directly through the API.

Overview

Legal form: GmbH
Address: Spandauer Str. 46
57072 Siegen
Commercial register: HRB 5139, Siegen
Registration date: June 24, 1999
Industry: Erbringung von Beratungsleistungen auf dem Gebiet der Informationstechnologie
Entwicklung und Programmierung von Anwendungssoftware
Erbringung von sonstigen Dienstleistungen der Informationstechnologie
Purpose: Entwicklung von Software, der Vertrieb von Hardware und Software, die Projektierung, Beratung und Schulung bei der Einführung von Hardware und Software sowie die Entwicklung und Anpassung von Software für bzw. an den Bedarf des Kunden, die Unterstützung und Durchführung von Projekten zur Gestaltung und Optimierung von betrieblichen Abläufen und Strukturen.

Financials

Employees 2024

Total assets 2024

1,31 Mio. €

18 previous years · values unlocked with an API key Get API key →

Balance sheet

2024

Assets 1,31 Mio

Current Assets 93,2 % 1,22 Mio
Fixed Assets 4,7 % 62,0 k
Prepaid Expenses 2,1 % 27,4 k

Liabilities and Equity 1,31 Mio

Equity 47,8 % 625,3 k
Liabilities 31,9 % 417,9 k
Provisions 20,2 % 264,8 k

Full balance sheet line items with an API key Get API key →

Balance sheet data available for 18 earlier fiscal years.

Authorized representatives

Markus Maximilian Dr.-Ing. Weyerke since 2003 Managing Director

4 former representatives · viewable with an API key Get API key →

Ownership & holdings

Shareholders

Jörg Rudolf Kenter 40.0 % 10k €
Markus Maximilian Weyerke 40.0 % 10k €
AVENTUM GmbH DEU Amtsgericht Siegen, HRB 5139 20.0 % 5k €

Ultimate beneficial owners (UBOs)

2 hold ≥ 25%

80.0 % identified 20.0 % unidentified

J*** K***** ≥25% 40.0 %

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

Holds shares in

AVENTUM GmbH GmbH Siegen, DEU 20.0 %

History

2025
20.02.

Correction of personal data

Markus Maximilian Dr.-Ing. Weyerke · Managing Director
20.02.

Change of company name

AVENTUM GmbH
20.02.

Change of bylaws

AVENTUM GmbH
06.02.

Exit of position

Jörg Rudolf Kenter · Procura
2014
24.10.

Change of bylaws

AVENTUM GmbH
05.08.

Merger

AVENTUM GmbH
2011
17.01.

Exit of position

G**** F****** · Procura
17.01.

Member entry

J*** K***** · Procura

19 more entries Get API key →

Part 2 / 2

Raw data & documents

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

Annual statements (full text)

Published reports as markdown — including management report, balance sheet, P&L and appendix.

2024 Jahresabschluss
2023 Jahresabschluss ↓
2022 Jahresabschluss
2021 Jahresabschluss
2020 Jahresabschluss

Previous year — readable in full

Jahresabschluss 2023

Published January 24, 2025 · Source: Bundesanzeiger

Aventum GmbH

Siegen

Jahresabschluss zum Geschäftsjahr vom 01.01.2023 bis zum 31.12.2023

Bilanz

Aktiva
	31.12.2023 EUR	31.12.2022 EUR
A. Anlagevermögen	83.231,50	275.471,90
I. Immaterielle Vermögensgegenstände	25.271,00	18.838,50
II. Sachanlagen	54.960,50	48.990,00
III. Finanzanlagen	3.000,00	207.643,40
B. Umlaufvermögen	1.124.003,37	512.609,51
I. Vorräte	3.360,00	22.488,50
II. Forderungen und sonstige Vermögensgegenstände	321.232,38	307.626,69
III. Kassenbestand, Bundesbankguthaben, Guthaben bei Kreditinstituten und Schecks	799.410,99	182.494,32
C. Rechnungsabgrenzungsposten	14.920,38	8.586,34
Aktiva	1.222.155,25	796.667,75

Passiva
	31.12.2023 EUR	31.12.2022 EUR
A. Eigenkapital	708.914,71	487.181,56
I. Gezeichnetes Kapital	25.000,00	25.000,00
II. Bilanzgewinn	683.914,71	462.181,56
davon Gewinnvortrag	62.182,39	596.326,58
B. Rückstellungen	227.998,44	136.706,79
C. Verbindlichkeiten	285.242,10	172.779,40
davon mit einer Restlaufzeit bis zu einem Jahr	285.242,10	172.779,40
davon gegenüber Gesellschaftern	0,00	59,46
Passiva	1.222.155,25	796.667,75

Anhang

Allgemeine Angaben zum Jahresabschluss

Der Jahresabschluss wurde nach den Vorschriften der §§ 242 ff. HGB unter der Beachtung der ergänzenden Bestimmungen für kleine Kapitalgesellschaften aufgestellt.

1. Angaben zur Identifikation der Gesellschaft laut Registergericht

Firmenname laut Registergericht:	Aventum GmbH
Firmensitz laut Registergericht:	Siegen
Registereintrag:	Handelsregister
Registergericht:	Siegen
Register-Nr.:	5139

Angaben zu Bilanzierungs- und Bewertungsmethoden

Bilanzierungs- und Bewertungsgrundsätze

Erworbene immaterielle Anlagewerte wurden zu Anschaffungskosten angesetzt und, sofern sie der Abnutzung unterlagen, um planmäßige Abschreibungen vermindert.

Das Sachanlagevermögen wurde zu Anschaffungs- bzw. Herstellungskosten angesetzt und, soweit abnutzbar, um planmäßige Abschreibungen vermindert.

Die planmäßigen Abschreibungen wurden nach der voraussichtlichen Nutzungsdauer der Vermögensgegenstände linear vorgenommen.

Die Vorräte wurden zu Anschaffungs- bzw. Herstellungskosten angesetzt. Sofern die Tageswerte am Bilanzstichtag niedriger waren, wurden diese angesetzt.

Forderungen und Wertpapiere wurden unter Berücksichtigung aller erkennbaren Risiken bewertet.

Die Steuerrückstellungen beinhalten die das Geschäftsjahr betreffenden, noch nicht veranlagten Steuern.

Die sonstigen Rückstellungen wurden für alle weiteren ungewissen Verbindlichkeiten gebildet. Dabei wurden alle erkennbaren Risiken berücksichtigt.

Verbindlichkeiten wurden zum Erfüllungsbetrag angesetzt.

Gegenüber dem Vorjahr abweichende Bilanzierungs- und Bewertungsmethoden

Beim Jahresabschluss konnten die bisher angewandten Bilanzierungs- und Bewertungsmethoden im Wesentlichen übernommen werden.

Angaben zur Bilanz

Angabe zu Forderungen mit einer Restlaufzeit größer einem Jahr

Der Betrag der Forderungen mit einer Restlaufzeit größer einem Jahr beträgt 0 EUR (Vorjahr: 0 EUR).

Betrag der Verbindlichkeiten mit einer Restlaufzeit > 5 Jahre und der Sicherungsrechte

Der Gesamtbetrag der bilanzierten Verbindlichkeiten mit einer Restlaufzeit von mehr als 5 Jahren beträgt 0 EUR (Vorjahr: 0 EUR).

Der Gesamtbetrag der bilanzierten Verbindlichkeiten, die durch Pfandrechte oder ähnliche Rechte gesichert sind, beträgt 0 EUR.

Sonstige Angaben

Durchschnittliche Zahl der während des Geschäftsjahrs beschäftigten Arbeitnehmer

Die durchschnittliche Zahl der während des Geschäftsjahres im Unternehmen beschäftigten Arbeitnehmer betrug 29.

Unterschrift der Geschäftsführung

Siegen, den 11.12.2024	gez. Dipl.- Ing.- Dr. Markus Weyerke
Ort, Datum	Unterschrift

sonstige Berichtsbestandteile

Siegen, den 11.12.2024

gez. Dipl.- Ing.- Dr. Markus Weyerke

Angaben zur Feststellung:
Der Jahresabschluss wurde am 11.12.2024 festgestellt.

Latest filings and full-volume access to every fiscal year. Get API key →

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

Unlock with API key Get API key →

Website content

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

Website snapshot (auto-discovered) AI

Unlock with API key Get API key →

Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=00ea1fea3be55b8c95cc8ee8b32f2004

&features=financial_kpi

&features=balance_sheet_accounts

&features=related_persons

&features=shareholders

&features=ubos

&features=shareholdings

&features=history

&features=annual_financial_statements__html

curl -H 'X-API-KEY: YOUR_API_KEY' \
  "https://handelsregister.ai/api/v1/fetch-organization?q=00ea1fea3be55b8c95cc8ee8b32f2004&features=financial_kpi&features=balance_sheet_accounts&features=related_persons&features=shareholders&features=ubos&features=shareholdings&features=history&features=annual_financial_statements__html"

# pip install handelsregister
from handelsregister import Handelsregister

client = Handelsregister(api_key="YOUR_API_KEY")  # or set HANDELSREGISTER_API_KEY
organization = client.fetch_organization(
    q="00ea1fea3be55b8c95cc8ee8b32f2004",
    features=[
        "financial_kpi",
        "balance_sheet_accounts",
        "related_persons",
        "shareholders",
        "ubos",
        "shareholdings",
        "history",
        "annual_financial_statements__html",
    ],
)
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: '00ea1fea3be55b8c95cc8ee8b32f2004',
  features: [
    'financial_kpi',
    'balance_sheet_accounts',
    'related_persons',
    'shareholders',
    'ubos',
    'shareholdings',
    'history',
    'annual_financial_statements__html',
  ],
});
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: '00ea1fea3be55b8c95cc8ee8b32f2004',
    features: [
      'financial_kpi',
      'balance_sheet_accounts',
      'related_persons',
      'shareholders',
      'ubos',
      'shareholdings',
      'history',
      'annual_financial_statements__html',
    ],
  });
  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": [
        {
            "document_type": "<string>",
            "document_date": "<ISO date>",
            "document_title": "<string>",
            "language": "<string>",
            "year": "<int>",
            "document_html": "<string>"
        }
    ],
    "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
                },
                "titles": [
                    "<string>"
                ],
                "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": [
            {
                "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": "<ISO date>",
                "birth_date": null,
                "name_parts": {
                    "given": "<string>",
                    "family": "<string>",
                    "maiden": null,
                    "canonical_name": "<string>",
                    "previous_names": null
                },
                "location": {
                    "home": {
                        "city": "<string>"
                    }
                },
                "organization_representation_scheme": {
                    "latest": [
                        "<string>"
                    ],
                    "history": [
                        {
                            "value": [
                                "<string>"
                            ],
                            "effective_from": "<string>",
                            "effective_to": null
                        }
                    ]
                },
                "role_representation_scheme": {
                    "latest": [
                        "<string>"
                    ],
                    "history": [
                        {
                            "value": [
                                "<string>"
                            ],
                            "effective_from": "<string>",
                            "effective_to": "<string>"
                        }
                    ]
                }
            }
        ]
    },
    "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>"
        }
    },
    "balance_sheet_accounts": [
        {
            "year": "<int>",
            "balance_sheet_accounts": [
                {
                    "name": {
                        "de": "<string>",
                        "en": "<string>",
                        "in_report": "<string>"
                    },
                    "value": "<float>",
                    "children": [
                        {
                            "name": {
                                "de": "<string>",
                                "en": "<string>",
                                "in_report": "<string>"
                            },
                            "value": "<float>",
                            "children": [
                                {
                                    "name": {
                                        "de": "<string>",
                                        "en": "<string>",
                                        "in_report": "<string>"
                                    },
                                    "value": "<float>",
                                    "children": []
                                }
                            ]
                        }
                    ]
                }
            ]
        }
    ],
    "financial_kpi": [
        {
            "year": "<int>",
            "employees": "<int>",
            "active_total": "<float>",
            "revenue": null,
            "material_expenses": null,
            "personnel_expenses": null,
            "net_income": 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": [
            {
                "reason": "<string>",
                "entity_id": "<32-char hex>",
                "name": "<string>",
                "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>",
                "via": []
            }
        ],
        "coverage": {
            "resolved_percentage": "<float>",
            "unresolved_percentage": "<float>"
        }
    },
    "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": {
            "redacted": "<bool>"
        }
    },
    "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": {
                    "@type": "<string>",
                    "resolution_body": "<string>"
                },
                "linked_entities": {
                    "organization": {
                        "name": "<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.

Unlock every field with an API key Get API key →

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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