onOffice GmbH
onOffice GmbH is a Private limited company (Ltd.) registered in Germany under HRB 21420 Aachen, and its current status with Handelsregister (Commercial Register) is active. Its registered address on file is Aachen, Germany. 1 shareholder is on record for onOffice 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 6 October 2026.
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Shareholders
1
One shareholder is currently on record for onOffice GmbH, held on the Gesellschafterliste (shareholder list), filed under §40 of the GmbHG.
The largest of these is onOffice Software AG (zukünftig: onOffice Holding AG), holding 100% — a majority holding.
Because the 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 |
|---|---|---|---|
| onOffice Software AG (zukünftig: onOffice Holding AG) | 100% | Handelsregister (Commercial Register) |
Officers
5
Three of the 5 officer records shown for onOffice GmbH are current appointments, filed with Handelsregister (Commercial Register). Stefan Georg Mantl (appointed 2017-08-31), Janosch Reuschenbach (appointed 2017-08-31) and Marius Siegmund (appointed 2022-06-24) all serve as Geschäftsführer (managing director). The record also shows 2 earlier, since-resigned appointments held by officers who currently serve.
The register reports 10 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at onOffice 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
onOffice GmbH sits 1 level below its ultimate parent, onOffice Holding AG, registered in Germany. 1 subsidiary is recorded beneath it, across 2 jurisdictions. The full chain up to onOffice Holding AG is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by onOffice GmbH's own shareholder record. 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, Austria jurisdictions, 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.
onOffice Holding AG
Germany
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Frequently Asked Questions
Who owns onOffice GmbH?
One shareholder is currently on record for onOffice GmbH, held on the Gesellschafterliste (shareholder list), filed under §40 of the GmbHG. The largest of these is onOffice Software AG (zukünftig: onOffice Holding AG), holding 100% — a majority holding. Because the 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 onOffice GmbH's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for onOffice 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 onOffice GmbH have on record?
1 shareholder is shown on record for onOffice GmbH.
What is onOffice GmbH's company registration number?
onOffice GmbH's registration number is HRB 21420 Aachen, filed with Handelsregister (Commercial Register) in Germany. Its current status on the register is active.
Is onOffice GmbH still an active company?
onOffice GmbH's status on Handelsregister (Commercial Register) is listed as active.
What is onOffice GmbH's registered address?
The registered address on file for onOffice GmbH is Aachen, Germany.
Who are the officers/directors of onOffice GmbH?
Three of the 5 officer records shown for onOffice GmbH are current appointments, filed with Handelsregister (Commercial Register). Stefan Georg Mantl (appointed 2017-08-31), Janosch Reuschenbach (appointed 2017-08-31) and Marius Siegmund (appointed 2022-06-24) all serve as Geschäftsführer (managing director). The record also shows 2 earlier, since-resigned appointments held by officers who currently serve. Management authority at onOffice GmbH sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does onOffice GmbH have a parent company or subsidiaries?
onOffice GmbH sits 1 level below its ultimate parent, onOffice Holding AG, registered in Germany. 1 subsidiary is recorded beneath it, across 2 jurisdictions. Those 1 subsidiary spans Germany, Austria jurisdictions, 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 onOffice 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 onOffice 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 onOffice 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 onOffice 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 6 October 2026.