active Legal form GmbH

Prof4Net GmbH

Potsdam ·HRB 16424 Potsdam ·prof4.net

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Handelsregister API View JSON Collapse

{
    "name": "Prof4Net GmbH",
    "status": "ACTIVE"
}

Live API

GEThandelsregister.ai/api/v1/fetch-organization

?q=d019c69248bc716305d3d5d8cd9d4b0d

&features=financial_kpi

&features=balance_sheet_accounts

&features=related_persons

&features=shareholders

&features=ubos

&features=history

&features=annual_financial_statements__html

curl -H 'X-API-KEY: YOUR_API_KEY' \
  "https://handelsregister.ai/api/v1/fetch-organization?q=d019c69248bc716305d3d5d8cd9d4b0d&features=financial_kpi&features=balance_sheet_accounts&features=related_persons&features=shareholders&features=ubos&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="d019c69248bc716305d3d5d8cd9d4b0d",
    features=[
        "financial_kpi",
        "balance_sheet_accounts",
        "related_persons",
        "shareholders",
        "ubos",
        "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: 'd019c69248bc716305d3d5d8cd9d4b0d',
  features: [
    'financial_kpi',
    'balance_sheet_accounts',
    'related_persons',
    'shareholders',
    'ubos',
    '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: 'd019c69248bc716305d3d5d8cd9d4b0d',
    features: [
      'financial_kpi',
      'balance_sheet_accounts',
      'related_persons',
      'shareholders',
      'ubos',
      'history',
      'annual_financial_statements__html',
    ],
  });
  console.log(organization.name);
})();

JSON preview

{
    "entity_id": "d019c69248bc716305d3d5d8cd9d4b0d",
    "name": "Prof4Net GmbH",
    "status": "ACTIVE",
    "legal_form": "GmbH",
    "registration_date": "2002-07-16T00:00:00+00:00",
    "purpose": "die Softwareentwicklung",
    "address": {
        "street": "Gerlachstraße",
        "house_number": "47-49",
        "postal_code": "14480",
        "city": "Potsdam",
        "country": "DEU"
    },
    "registration": {
        "register_type": "HRB",
        "register_number": "16424",
        "court": "Potsdam"
    }
}

"representation_scheme": { … }

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"capital": { … }

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"contact_data": { … }

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"industry_classification": { … }

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"keywords": [ … ]

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"products_and_services": [ … ]

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"history": [ … ]

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"financial_kpi": [ … ]

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"related_persons": { … }

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"shareholders": { … }

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"ubos": { … }

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"balance_sheet_accounts": [ … ]

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"annual_financial_statements__html": [ … ]

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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

Register record with court, register_type and register_number.

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. Every year names the source of its figures in _provenance: statement_type (Jahresabschluss = annual accounts, Bilanz = balance sheet only, Konzernabschluss = consolidated accounts; null for market data), period_start and period_end of the fiscal year, plus exempt_subsidiary and parent_organization ({ entity_id, name }). With exempt_subsidiary: true the company published the consolidated accounts of parent_organization instead of accounts of its own, so that year's figures cover the whole group.

features=balance_sheet_accounts

balance_sheet_accounts array<object>

Per fiscal year: hierarchical balance-sheet line items from the published statement, with _provenance naming the source of the figures (fields as in financial_kpi). For energy utilities, Max accounts also receive activity_statements through the API: the balance sheets of the activity statements (section 6b EnWG), one per regulated activity such as electricity or gas distribution; together they do not add up to the company's balance sheet.

features=profit_and_loss_account

profit_and_loss_account array<object>

Per fiscal year: hierarchical profit-and-loss line items, with _provenance naming the source of the figures (fields as in financial_kpi). For energy utilities, Max accounts also receive activity_statements through the API: the profit and loss accounts of the activity statements (section 6b EnWG), one per regulated activity.

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.

Overview

Legal form: GmbH
Address: Gerlachstraße 47-49
14480 Potsdam
Commercial register: HRB 16424, Potsdam
Registration date: July 16, 2002
Industry: Entwicklung und Programmierung von Anwendungssoftware
Entwicklung und Programmierung von Internetpräsentationen
Erbringung von sonstigen Dienstleistungen der Informationstechnologie
Registered capital: 25,000.00 EUR
Representation rules: Jeder Geschäftsführer vertritt die Gesellschaft allein.
Purpose: die Softwareentwicklung

Financials

Employees 2025

34

Total assets 2025

2,02 Mio. €

Net income 2025

124.636 €

Annual accounts · 01.01.2025 – 31.12.2025

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

Balance sheet

Annual accounts · 01.01.2025 – 31.12.2025

2025

Assets 2,02 Mio

Current Assets 70,6 % 1,43 Mio
Fixed Assets 28,9 % 584,5 k
Prepaid Expenses 0,5 % 10,2 k

Liabilities and Equity 2,02 Mio

Equity 67,3 % 1,36 Mio
Liabilities 21,7 % 438,7 k
Provisions 10,8 % 219,6 k
Accrued Expenses 0,2 % 3,3 k

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

Balance sheet data available for 18 earlier fiscal years.

Authorized representatives

Björn Keding since 2006 Managing Director
Jens Girbert since 2006 Managing Director

Ownership & holdings

Shareholders

Horst Theel 40.0 % 10k €
Jens Girbert 30.0 % 8k €
Björn Keding 30.0 % 8k €

Ultimate beneficial owners (UBOs)

3 hold ≥ 25%

H**** T**** ≥25% 40.0 %
B**** K***** ≥25% 30.0 %

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

History

2022
17.01.

Correction of personal data

Jens Girbert · Managing Director
17.01.

Change of bylaws

Prof4Net GmbH
2013
10.06.

Change of address

Prof4Net GmbH
23.04.

Change of address

Prof4Net GmbH
2006
07.06.

Change of representation scheme

Jeder Geschäftsführer vertritt die Gesellschaft allein.
07.06.

Change of share capital

Prof4Net GmbH
07.06.

Change of seat

Prof4Net GmbH
07.06.

Member entry

Jens Girbert · Managing Director

9 more events including all details Get API key →

Annual statements

Original published statements, ordered by fiscal year.

5 documents

Fiscal year	Document	Published	Access
2025	Jahresabschluss	Published August 4, 2026	Via the API
2024	Jahresabschluss	Published January 22, 2026	Read full text
2023	Jahresabschluss	Published September 5, 2024	Via the API
2022	Jahresabschluss	Published July 31, 2023	Via the API
2021	Jahresabschluss	Published July 22, 2022	Via the API

All financial statements via the API

2024 Jahresabschluss Full text

Prof4Net GmbH

Potsdam

Jahresabschluss zum Geschäftsjahr vom 01.01.2024 bis zum 31.12.2024

Bilanz

Aktiva

scroll

	31.12.2024 EUR	31.12.2023 EUR
A. Anlagevermögen	36.627,00	37.777,00
I. Immaterielle Vermögensgegenstände	8.333,00	13.333,00
II. Sachanlagen	28.294,00	24.444,00
B. Umlaufvermögen	1.813.446,19	1.666.871,96
I. Vorräte	63.781,51	0,00
II. Forderungen und sonstige Vermögensgegenstände	326.393,34	398.374,68
III. Wertpapiere	435.609,56	230.000,00
IV. Kassenbestand, Bundesbankguthaben, Guthaben bei Kreditinstituten und Schecks	987.661,78	1.038.497,28
C. Rechnungsabgrenzungsposten	12.837,02	9.231,00
Aktiva	1.862.910,21	1.713.879,96
Passiva
	31.12.2024 EUR	31.12.2023 EUR
A. Eigenkapital	1.238.232,96	1.117.884,66
I. Gezeichnetes Kapital	25.000,00	25.000,00
II. Gewinnvortrag	1.092.884,66	950.610,75
III. Jahresüberschuss	120.348,30	142.273,91
B. Rückstellungen	228.349,13	194.836,13
C. Verbindlichkeiten	395.378,91	401.159,17
davon mit einer Restlaufzeit bis zu einem Jahr	395.378,91	401.159,17
D. Rechnungsabgrenzungsposten	949,21
Passiva	1.862.910,21	1.713.879,96

Anhang

I. Allgemeine Angaben

Das Unternehmen ist im Handelsregister des Amtsgerichts Potsdam unter der Handelsregisternummer HRB 16424 eingetragen.

Die Aufstellung des Jahresabschlusses ist nach den Vorschriften des Handelsgesetzbuches (HGB) unter Berücksichtigung der Vorschriften für Kapitalgesellschaften und der sie ergänzenden Bestimmungen des GmbH-Gesetzes erfolgt.

Im Interesse der Klarheit und Übersichtlichkeit werden die gesetzlich vorgeschriebenen Vermerke zu Posten der Bilanz und Gewinn- und Verlustrechnung fast ausschließlich im Anhang aufgeführt.

Die bisher angewandten Gliederungs- und Bewertungsgrundsätze haben gegenüber dem Vorjahr keine Änderung erfahren.

Die Gewinn- und Verlustrechnung ist nach dem Gesamtkostenverfahren aufgestellt worden.

Die Erleichterungen der Rechnungslegung für kleine Gesellschaften werden hinsichtlich des Anhangs in Anspruch genommen.

II. Erläuterungen zur Bilanz

Immaterielle Vermögensgegenstände des Anlagevermögens und Sachanlagen werden zu Anschaffungs- bzw. Herstellungskosten und - soweit abnutzbar - vermindert um planmäßige lineare Abschreibungen bewertet.

Hinsichtlich der so genannten "geringwertigen Wirtschaftsgüter" im Sinne des Steuerrechts wird von der Möglichkeit einer Sofortabschreibung entsprechend § 6 Abs. 2 EStG Gebrauch gemacht.

Finanzanlagen werden zu Anschaffungskosten bzw. zu niedrigeren beizulegenden Werten bewertet.

Forderungen und sonstige Vermögensgegenstände sind grundsätzlich zu Nennwerten bewertet. Die in den Forderungen vorhandenen Risiken sind durch Einzelwertberichtigungen berücksichtigt.

Von den unter den sonstigen Vermögensgegenständen ausgewiesenen Beträgen entfallen 134,00 EUR auf Forderungen gegen Gesellschafter.

Das voll eingezahlte Stammkapital ist zum Nennbetrag bewertet.

Der Jahresüberschuss soll entsprechend dem Vorschlag der Geschäftsführung in voller Höhe auf neue Rechnung vorgetragen werden.

Steuer- und sonstige Rückstellungen decken die erkennbaren Risiken und ungewissen Verpflichtungen und sind mit dem Erfüllungsbetrag dotiert.

Die Verbindlichkeiten sind zum Erfüllungsbetrag bewertet und haben folgende Restlaufzeiten:

scroll

		Restlaufzeit
Verbindlichkeiten	Gesamt EUR	bis zu einem Jahr EUR	über einem Jahr EUR	über fünf Jahre EUR
aus Lieferungen und Leistungen	238.990,03	238.990,03
	(282.214,30)	(282.214,30)	(0,00)	(0,00)
sonstige Verbindlichkeiten	156.388,88	156.388,88
	(118.944,87)	(118.944,87)	(0,00)	(0,00)
	395.378,91	395.378,91	0,00	0,00
	(401.159,17)	(401.159,17)	(0,00)	(0,00)

Bei den in Klammern dargestellten Zahlen handelt es sich um die Vorjahresangaben.

III. Sonstige Angaben

Durchschnittliche Zahl der Mitarbeiter

Die durchschnittliche Zahl der während des Geschäftsjahres beschäftigten Arbeitnehmer beträgt 38.

Zu Geschäftsführern sind bestellt:

Herr Björn Keding und Herr Jens Girbert

sonstige Berichtsbestandteile

Unterschrift der Geschäftsleitung

Potsdam, 29. Oktober 2025

gez. Björn Keding

gez. Jens Girbert

Angaben zur Feststellung:

Der Jahresabschluss wurde am 29.10.2025 festgestellt.

Register documents

Bring original register extracts and company documents into your application as PDF or XML.

GET/v1/fetch-document

View the document API

Website prof4.net

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

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Handelsregister API · MCP

Company data in your AI chat

Ask about directors, ownership and financial figures. Our MCP server connects your assistant to the Handelsregister API.

MCP documentation

Connect your assistant

Open the handelsregister.ai app in ChatGPT and add it.
Open the app in ChatGPT
Sign in with your handelsregister.ai account when ChatGPT asks.
Ask your question in the chat – the answers come straight from the commercial register.

Prefer to connect it yourself? Create a custom app in ChatGPT’s developer mode with this server URL:

https://mcp.handelsregister.ai/mcp

Open Connectors in Claude and add a custom connector.
Enter this server URL and add the connector:
https://mcp.handelsregister.ai/mcp
Connect with your handelsregister.ai account, then enable the connector in your chat via “+” → “Connectors”.

Run once in your terminal:

Terminal

claude mcp add --transport http handelsregister https://mcp.handelsregister.ai/mcp \
  --header "X-API-Key: YOUR_API_KEY"

Replace YOUR_API_KEY with your handelsregister.ai API key.

Add this MCP server as a tool in your application:

Python

from openai import OpenAI

client = OpenAI()
response = client.responses.create(
    model="gpt-6-astra",
    input="Who runs Prof4Net GmbH, who owns it and how have its financials developed? Include fiscal years and sources.\n\nentity_id: d019c69248bc716305d3d5d8cd9d4b0d",
    tools=[{
        "type": "mcp",
        "server_label": "handelsregister",
        "server_url": "https://mcp.handelsregister.ai/mcp",
        "headers": {"X-API-Key": "YOUR_API_KEY"},
        "require_approval": "never",
    }],
)
print(response.output_text)

Replace YOUR_API_KEY with your handelsregister.ai API key.

Add this configuration to your MCP client:

JSON

{
  "mcpServers": {
    "handelsregister": {
      "url": "https://mcp.handelsregister.ai/mcp",
      "headers": { "X-API-Key": "YOUR_API_KEY" }
    }
  }
}

Replace YOUR_API_KEY with your handelsregister.ai API key.

Ask about this company

Once connected, ask your assistant this question:

Who runs Prof4Net GmbH, who owns it and how have its financials developed? Include fiscal years and sources.

entity_idd019c69248bc716305d3d5d8cd9d4b0d

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