# Stephan Koster

> Swiss commercial-register person record from Swiss Graph (graph.swiss),
> sourced from the Swiss Official Gazette of Commerce (SHAB/SOGC).
> Canonical profile: https://graph.swiss/people/stephan-koster/691939

## Registry facts

- Residence: Berneck
- Nationality: CH
- Status: active

## Mandates (3)

- EZO Eissportzentrum Oberthurgau AG (CHE-100.836.766) — member of the board — without signing authority
- Koster Gebäudesanierung (CHE-113.600.931) — owner — individual signing authority
- Koster Gebäudesanierung GmbH (CHE-279.310.915) — member and chairperson of the management board — individual signing authority

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Machine-readable variant of https://graph.swiss/people/stephan-koster/691939: registry facts only.
Site overview for agents: https://graph.swiss/llms.txt