SIZ GmbH
SIZ GmbH is a Private limited company (Ltd.) registered in Germany under HRB 5383 Bonn, and its current status with Handelsregister (Commercial Register) is active. Its registered address on file is Bonn, Germany. 5 shareholders are on record for SIZ GmbH, including at least one natural person recorded as a direct holder; the filing carries no beneficial-ownership flag, so that holder is noted here as a recorded shareholder rather than a confirmed ultimate beneficial owner (UBO). This profile is sourced directly from Handelsregister (Commercial Register) and was last updated on 19 October 2026.
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Shareholders
5
Five shareholders are currently on record for SIZ GmbH, held on the Gesellschafterliste (shareholder list), filed under §40 of the GmbHG.
The largest of these is SIZ-Informatik-Zentrum der Sparkassenorganisation GmbH, holding 5% — the largest recorded stake — followed by Stadtsparkasse München at 5%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 23 shareholders in total, though only the top 5 by holding are shown in this view.
3 shareholders shown are companies, so the ownership chain continues above this level for those holdings; the other 2 are recorded as direct individual holders, though the record carries no UBO/PSC flag confirming beneficial-owner status.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| SIZ-Informatik-Zentrum der Sparkassenorganisation GmbH | 5% | Handelsregister (Commercial Register) | |
| Stadtsparkasse München | 5% | Handelsregister (Commercial Register) | |
| Deutsche Sparkassen Leasing AG & Co. KG | 5% | Handelsregister (Commercial Register) | |
| Westfälisch-Lippischer Sparkassen- und Giroverband | 5% | Handelsregister (Commercial Register) | |
| HSH Nordbank AG | 5% | Handelsregister (Commercial Register) |
Officers
5
The Geschäftsführer (managing director) of SIZ GmbH currently on record is Jens Bartelt; five officers are currently on record for SIZ GmbH, filed with Handelsregister (Commercial Register).
The register reports 8 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at SIZ 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
SIZ GmbH has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 1 subsidiary spans Germany jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
SIZ GmbH
Germany
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Frequently Asked Questions
Who owns SIZ GmbH?
Five shareholders are currently on record for SIZ GmbH, held on the Gesellschafterliste (shareholder list), filed under §40 of the GmbHG. The largest of these is SIZ-Informatik-Zentrum der Sparkassenorganisation GmbH, holding 5% — the largest recorded stake — followed by Stadtsparkasse München at 5%; the remaining 3 shareholders shown hold smaller stakes. 3 shareholders shown are companies, so the ownership chain continues above this level for those holdings; the other 2 are recorded as direct individual holders, though the record carries no UBO/PSC flag confirming beneficial-owner status.
Who is SIZ GmbH's UBO (Ultimate Beneficial Owner)?
At least one shareholder recorded for SIZ GmbH is a natural person. The record carries no dedicated UBO/PSC flag, so that holder is stated here as a recorded shareholder rather than a confirmed Ultimate Beneficial Owner (UBO).
How many shareholders does SIZ GmbH have on record?
5 shareholders are shown on record for SIZ GmbH. The register reports 23 in total; only the top 5 by holding are shown here.
What is SIZ GmbH's company registration number?
SIZ GmbH's registration number is HRB 5383 Bonn, filed with Handelsregister (Commercial Register) in Germany. Its current status on the register is active.
Is SIZ GmbH still an active company?
SIZ GmbH's status on Handelsregister (Commercial Register) is listed as active.
What is SIZ GmbH's registered address?
The registered address on file for SIZ GmbH is Bonn, Germany.
Who are the officers/directors of SIZ GmbH?
The Geschäftsführer (managing director) of SIZ GmbH currently on record is Jens Bartelt; five officers are currently on record for SIZ GmbH, filed with Handelsregister (Commercial Register). Management authority at SIZ GmbH sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does SIZ GmbH have a parent company or subsidiaries?
SIZ GmbH has no recorded parent company — it sits at the top of its own group structure, with 1 subsidiary recorded beneath it across 1 jurisdiction. Those 1 subsidiary spans Germany jurisdiction, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear.
Can Zavia monitor changes to SIZ 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 SIZ 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 SIZ 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 SIZ 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 19 October 2026.