# Martin Portner

> 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/martin-portner/100521

## Registry facts

- Residence: Strengelbach
- Nationality: CH
- Status: active

## Mandates (2)

- SIEGENIA-AUBI AG (CHE-101.633.935) — member of the board — joint signing authority (any two to sign)
- HandWärker.ch GmbH (CHE-159.128.726) — member and chairperson of the management board — individual signing authority

---

Machine-readable variant of https://graph.swiss/people/martin-portner/100521: registry facts only.
Site overview for agents: https://graph.swiss/llms.txt