CEBONA GmbH

Shareholders of CEBONA GmbH

The underlying register-sourced data lists a single disclosed shareholder for CEBONA GmbH: JF 111 Verwaltungsgesellschaft Lichterfelde GmbH, a German limited company. The shareholding is recorded across two ordinary share tranches, verified as of 4 September 2026: one representing 85.22% of share capital (nominal value €306,800) and one representing 14.78% (nominal value €53,200), together accounting for the entity’s full disclosed share capital. There is no indication that these are separate share classes with different rights; they appear to reflect two capital tranches held by the same shareholder. The disclosure is treated as full at the shareholder level for a private German GmbH, since German company law requires the current shareholder list (Gesellschafterliste) to be filed at the commercial register, though it reflects only the position at the most recent filing and may not capture changes since that date.

Ultimate beneficial ownership

No natural person has been identified as an ultimate beneficial owner of CEBONA GmbH from the sources reviewed. The sole disclosed shareholder, JF 111 Verwaltungsgesellschaft Lichterfelde GmbH, is itself a corporate entity, and the available information does not establish a complete, dated ownership chain back to an individual. Accordingly, no effective percentage can be calculated and no UBO is reported here. This should not be read as evidence that no UBO exists, only that one could not be reliably confirmed from the public register data reviewed.

Data availability

Shareholder information for German GmbHs is generally available through the Gesellschafterliste filed at the commercial register. Disclosure is treated as full at the shareholder level but partial at the beneficial-ownership level, since no separate UBO (Transparenzregister) extract was reviewed independently.

Sources

• Handelsregister (Commercial Register), Amtsgericht Charlottenburg (Berlin), HRB 78729 B — registry source underlying Zavia.ai’s company record, last synchronised 8 September 2026.
• Commercial-register mirror listings for HRB 78729 B and related entities, used only to cross-check names and structure, retrieved 25 September 2026.

Directors and officers of CEBONA GmbH

Register-sourced data lists five officer records for CEBONA GmbH: two individuals recorded as Managing Director (Geschäftsführer), two further individuals recorded with the generic role of “Officer,” and one duplicate record for an individual already counted, shown under a conflicting status. The two current Managing Directors are Michael Schlickum (born February 1971) and Kerstin Müller (born September 1966), both shown as active. Kirsten Hachmeister is recorded as an active officer without a specified role detail beyond “Officer” and without a disclosed date of birth. Ilias Sidiropoulos (born March 1962) appears twice in the underlying data: once marked as resigned, and once, in an older record lacking a date of birth, marked as active. This inconsistency could not be resolved from the sources reviewed and is flagged here as a data-quality limitation rather than presented as a confirmed current appointment. No appointment or resignation dates are disclosed in the underlying data for any of the five individuals.

Data availability

German commercial register extracts typically disclose current managing directors but do not publish nationality. Nationality is Not disclosed for every individual listed here and has not been inferred from name, address or residence. The country field recorded against each officer is a correspondence-country indicator (Germany) only and has not been treated as evidence of personal residence or nationality. Historical appointment and resignation dates are not available in the reviewed data, so officer information is treated as current-only, with one unresolved status conflict noted above.

Sources

• Handelsregister (Commercial Register), Amtsgericht Charlottenburg (Berlin), HRB 78729 B — registry source underlying Zavia.ai’s company record, last synchronised 8 September 2026.
• Commercial-register mirror listings for HRB 78729 B, used to cross-check current managing directors, retrieved 25 September 2026.

Group structure of CEBONA GmbH

CEBONA GmbH is not an independent company. Register-sourced shareholder data and Zavia.ai’s underlying corporate-linkage data both place it within a large, verified corporate structure connected to the German charitable organisation Johanniter. The sole disclosed shareholder of CEBONA GmbH, JF 111 Verwaltungsgesellschaft Lichterfelde GmbH, a Berlin-registered holding company, is recorded as its immediate parent. The underlying linkage data traces this structure up to Johanniter GmbH, Berlin (commercial register number HRB 161222 B, Amtsgericht Charlottenburg), as the ultimate parent of a group of more than sixty affiliated German entities operating hospitals, medical care centres, residential and day-care facilities and related support-service companies. Only relationships that could be corroborated against register-type data or an independent source are presented below; the wider group contains many further entities with no verified direct link to CEBONA GmbH, and these are not listed.

Verified corporate relationships

Data availability

Group information is treated as partial: the immediate and ultimate parent are identified with reasonable confidence, but the registration number of the immediate parent and precise ownership percentages above the immediate shareholder level are not independently confirmed, and the wider group’s subsidiary list has not been verified entity-by-entity for a corporate, as opposed to organisational, relationship to CEBONA GmbH.

Sources

• Zavia.ai underlying corporate-linkage data, last synchronised 8 September 2026.
• Commercial-register mirror listings for HRB 78729 B, HRB 161222 B and related entities, used to cross-check the structure, retrieved 25 September 2026.