Activities of holding companies companies in Siek

Siek ·Currently listed companies in the Activities of holding companies industry headquartered in Siek.

22 companies · 1–20 of 22

Beteiligungsgesellschaft Harkortstr. UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 11557 Lübeck · 2010
46a579bb84…
Beteiligungsgesellschaft Sillemstr. 48 UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 11548 Lübeck · 2010
52e472a0ea…
Bielfeldt Metallbau GmbH GmbH · HRB 3380 Lübeck · 2005
b2ffc918a9…
Dachdeckerei Benner GmbH GmbH · HRB 2883 Lübeck · 2005
609f2b8192…
DEUCONCEPT Gesellschaft für Konzeption und Vermittlung von Finanzdienstleistungen mbH GmbH · HRB 22186 Lübeck · 1989
0a4f3cffee…
EIKO Anlagenbau und -prüfungsgesellschaft mbH GmbH · HRB 1316 Bad Oeynhausen · 1984
3096553db4…
INTENTURE TRANSACTION TREUHAND UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 176430 Hamburg · 2022
536cac94df…
LaserFlex Verwaltungsgesellschaft mbH GmbH · HRB 4247 Lübeck · 2005
95ca927ac9…
Liebelei Holding GmbH GmbH · HRB 22376 Lübeck · 2022
3330672043…
Malte Dymowski e. K. Inhaber Malte Sven Dymowski e.K. · HRA 11640 Lübeck · 2025
f81d0859f9…
Medical MEP Verwaltungs GmbH GmbH · HRB 21706 Lübeck · 2021
7721f913db…
mose Holding GmbH GmbH · HRB 14187 Lübeck · 2014
77592daced…
netCo.system GmbH GmbH · HRB 3672 Lübeck · 2005
2af4ad92e7…
nt investments UG (haftungsbeschränkt) UG (haftungsbeschränkt) · HRB 14675 Lübeck · 2015
e48b37b790…
Sanquell GmbH GmbH · HRB 3389 Lübeck · 2005
4505163c66…
SIK Beteiligungs-GmbH GmbH · HRB 9524 Lübeck · 2004
7a51f5ed98…
Stahlgerüstbau Nord GmbH GmbH · HRB 4454 Lübeck · 2005
87c029fca1…
Stock GmbH GmbH · HRB 471 Lübeck · 2005
6f3a6b9233…
V274 Beteiligungs-GmbH, Siek Nord GmbH · HRB 23524 Lübeck · 2023
68ed1fd479…
V361 Beteiligungs-GmbH, Siek Süd GmbH · HRB 23531 Lübeck · 2023
17f897579d…

All industries in Siek

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Siek","industry_code":"64.21.0","industry_scheme":"WZ2025"}

# pip install handelsregister
from handelsregister import Handelsregister

client = Handelsregister(api_key="YOUR_API_KEY")  # or set HANDELSREGISTER_API_KEY
page = client.search_organizations(
    filters={
        "city": "Siek",
        "industry_code": "64.21.0",
        "industry_scheme": "WZ2025"
    },
    limit=20,
    skip=0,
)
print(page["total"])
for item in page["results"]:
    print(item["name"], item["registration"]["register_number"])

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

const client = new Handelsregister('YOUR_API_KEY'); // or set HANDELSREGISTER_API_KEY
const page = await client.searchOrganizations({
  filters: {
      "city": "Siek",
      "industry_code": "64.21.0",
      "industry_scheme": "WZ2025"
  },
  limit: 20,
  skip: 0,
});
console.log(page.total);
for (const item of page.results) {
  console.log(item.name, item.registration.register_number);
}

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

const client = new Handelsregister(process.env.HANDELSREGISTER_API_KEY);
(async () => {
  const page = await client.searchOrganizations({
    filters: {
        "city": "Siek",
        "industry_code": "64.21.0",
        "industry_scheme": "WZ2025"
    },
    limit: 20,
    skip: 0,
  });
  console.log(page.total);
  for (const item of page.results) {
    console.log(item.name, item.registration.register_number);
  }
})();

curl 'https://handelsregister.ai/api/v1/search-organizations?limit=20' \
  -H 'x-api-key: YOUR_API_KEY' \
  -G --data-urlencode 'filters={"city":"Siek","industry_code":"64.21.0","industry_scheme":"WZ2025"}'

{
    "results": [
        {
            "entity_id": "<32-char hex>",
            "name": "<string>",
            "registration": {
                "court": "<string>",
                "register_type": "<string>",
                "register_number": "<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_date": "<ISO date>",
            "purpose": "<string>"
        }
    ],
    "total": "<int>",
    "meta": {
        "request_credit_cost": "<int>",
        "credits_remaining": "<int>"
    }
}

results[]

entity_id string

Stable 32-char hex identifier. Pass straight into /fetch-organization as `q`.

name string

Registered company name.

registration object

address object

Postal address with street, house_number, postal_code, city, county, state, country and coordinates (latitude/longitude).

registration_date date

Initial entry into the commercial register (ISO date).

purpose string

Stated business purpose (Unternehmensgegenstand).

top-level

total integer

Total result count for pagination.

meta.request_credit_cost integer

Credits actually charged for this call.

meta.credits_remaining integer

Account credit balance remaining after this call.

Location · Industry · Legal form · Full-text

Filters & master data — via search-organizations

City, industry, legal form, registration date: every argument combinable through the filters parameter. One REST endpoint, every German company.

Location & geo Filter by city, postal code, state and county through city, postal_code, state and county.
Industry (WZ2025) Industry segmentation via the official WZ2025 codes — industry_code combined with industry_scheme.
Legal form GmbH, AG, KG, OHG and more via legal_form_code.
Company size bs_company_size_category – small, medium, large based on balance-sheet totals.
Active status Restrict to active entries or include deleted companies via active.
Registration date Date ranges via registration_date_from and registration_date_to.
Full-text search Free-text query via the q parameter (min. 2 characters).
Pagination skip and limit (up to 30 results per call) for deep lists.
Master data per result entity_id, name, address, registration and registration_date – pass entity_id straight to /fetch-organization.

Run every filter live with an API key. Get an API key →

Code · AI-Agents · No-Code · Workflows

Drops into any stack

The search-organizations API speaks every mainstream client: REST, Python, Node, MCP for AI agents, n8n and webhook platforms.

REST API Simple GET request with the X-API-KEY header and JSON-encoded filters. Python requests, httpx or your favourite library — pass filters via json.dumps. Node.js fetch or axios with URLSearchParams. Works in edge, worker and browser runtimes. MCP Server Directly in Claude, Cursor or any MCP-aware AI client as the search_organizations tool. n8n Pre-built custom node for workflow automation — city, industry and size as filter inputs. Webhook Callable from Zapier, Make or any other webhook platform.

This list in your app

Grab an API key and filter every German company by city, industry, size and more — straight from your application. One REST endpoint, every result.

Get an API key

Filters & master data — via search-organizations

Drops into any stack

This list in your app

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