G.S.M. Gas-Heizungen und Sanitärinstallation GmbH
G.S.M. Gas-Heizungen und Sanitärinstallation GmbH is a Private limited company (Ltd.) registered in Germany under HRB 37626 B Charlottenburg (Berlin), and its current status with Handelsregister (Commercial Register) is active. The company was incorporated on 28 January 1991 and lists its registered address as Berlin, Germany. 4 shareholders are on record for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Handelsregister (Commercial Register) and was last updated on 15 October 2026.
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Shareholders
4
Four shareholders are currently on record for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH, held on the Gesellschafterliste (shareholder list), filed under §40 of the GmbHG.
The largest of these is Builtech Berlin Brandenburg GmbH, holding 33.3% — the largest recorded stake — followed by Builtech Berlin Brandenburg GmbH at 33.3%; the remaining 2 shareholders shown hold smaller stakes.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Builtech Berlin Brandenburg GmbH | 33.3% | Handelsregister (Commercial Register) | |
| Builtech Berlin Brandenburg GmbH | 33.3% | Handelsregister (Commercial Register) | |
| Builtech Berlin Brandenburg GmbH | 16.7% | Handelsregister (Commercial Register) | |
| Builtech Berlin Brandenburg GmbH | 16.7% | Handelsregister (Commercial Register) |
Officers
4
One of the 4 officer records shown for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH is a current appointment, filed with Handelsregister (Commercial Register). Carsten Radunski (appointed 2023-03-23) serves as Geschäftsführer (managing director). The remaining 3 records shown (Stefan Mikeska, Fred Brockelmann and 1 other) are former appointments that have since been resigned.
The register reports 6 officers in total, including past appointments, though only the 4 most relevant records are shown here.
Management authority at G.S.M. Gas-Heizungen und Sanitärinstallation GmbH sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
G.S.M. Gas-Heizungen und Sanitärinstallation GmbH sits 8 levels below its ultimate parent, Quantum Leap Holdco B.V., registered in Netherlands. Immediately above G.S.M. Gas-Heizungen und Sanitärinstallation GmbH is Builtech Berlin Brandenburg GmbH, holding 100% as filed in G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's own shareholder record with Handelsregister (Commercial Register). Quantum Leap Holdco B.V. sits further up the chain, a link derived by walking shareholder filings across jurisdictions rather than stated in a single document.
Quantum Leap Holdco B.V.
Netherlands
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Frequently Asked Questions
Who owns G.S.M. Gas-Heizungen und Sanitärinstallation GmbH?
Four shareholders are currently on record for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH, held on the Gesellschafterliste (shareholder list), filed under §40 of the GmbHG. The largest of these is Builtech Berlin Brandenburg GmbH, holding 33.3% — the largest recorded stake — followed by Builtech Berlin Brandenburg GmbH at 33.3%; the remaining 2 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does G.S.M. Gas-Heizungen und Sanitärinstallation GmbH have on record?
4 shareholders are shown on record for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH.
What is G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's company registration number?
G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's registration number is HRB 37626 B Charlottenburg (Berlin), filed with Handelsregister (Commercial Register) in Germany. Its current status on the register is active.
Is G.S.M. Gas-Heizungen und Sanitärinstallation GmbH still an active company?
G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's status on Handelsregister (Commercial Register) is listed as active.
When was G.S.M. Gas-Heizungen und Sanitärinstallation GmbH incorporated?
G.S.M. Gas-Heizungen und Sanitärinstallation GmbH was incorporated on 28 January 1991, according to Handelsregister (Commercial Register).
What is G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's registered address?
The registered address on file for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH is Berlin, Germany.
Who are the officers/directors of G.S.M. Gas-Heizungen und Sanitärinstallation GmbH?
One of the 4 officer records shown for G.S.M. Gas-Heizungen und Sanitärinstallation GmbH is a current appointment, filed with Handelsregister (Commercial Register). Carsten Radunski (appointed 2023-03-23) serves as Geschäftsführer (managing director). The remaining 3 records shown (Stefan Mikeska, Fred Brockelmann and 1 other) are former appointments that have since been resigned. Management authority at G.S.M. Gas-Heizungen und Sanitärinstallation GmbH sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does G.S.M. Gas-Heizungen und Sanitärinstallation GmbH have a parent company or subsidiaries?
G.S.M. Gas-Heizungen und Sanitärinstallation GmbH sits 8 levels below its ultimate parent, Quantum Leap Holdco B.V., registered in Netherlands.
Can Zavia monitor changes to G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's ownership over time?
This profile reflects a point-in-time snapshot from Handelsregister (Commercial Register). Zavia's monitoring API can track changes to G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Germany, so records like G.S.M. Gas-Heizungen und Sanitärinstallation GmbH's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Handelsregister (Commercial Register) and was last synced on 15 October 2026.