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Family HoldingPuts its own capital into companiesLAST VERIFIED Oct 2026 · 5 SOURCES

Santo Holding AG

Zug investment holding of Hexal founders Thomas and Andreas Strüngmann; bought Südwestbank in 2004 and, with EQT, Siemens Audiology Solutions in 2014.

USEFUL FOR Co-investors

Family & background

FAMILY
Strüngmann
WEALTH ORIGIN
Generics maker Hexal, sold with Eon Labs to Novartis in 2005
HEADQUARTERS
Zug, Switzerland
FOUNDED
2001

Investment approach

SECTORS
Biotech & Life SciencesHealthTechFintech
ROUTES
Companies (own capital)

Overview

Santo Holding AG is a Zug-based holding company through which twin brothers Andreas and Thomas Strüngmann, founders of generics maker Hexal, hold stakes in companies, mainly in biotech and healthcare. Through Santo Holding they bought 89.6% of Südwestbank from DZ Bank in 2004 and sold it to BAWAG in 2017. In 2014 Santo Holding and EQT bought Siemens Audiology Solutions from Siemens for EUR 2.2 billion. The brothers' family office is ATHOS KG in Germany.

Holdings & investments (2)

  • Siemens Audiology Solutions (with EQT)
    HealthTech · since 2014
  • Südwestbank
    Fintech · since 2004 · Exited

People

  • Andreas Strüngmann
    Co-founder and owner · source
  • Thomas Strüngmann
    Co-founder and owner · source
  • Helmut Wolfgang Jeggle
    Business Partner · source

Frequently asked questions

Santo Holding AG is a family holding based in Zug, Switzerland, founded in 2001.

Santo Holding AG invests on behalf of the Strüngmann family (Generics maker Hexal, sold with Eon Labs to Novartis in 2005).

Santo Holding AG invests its own capital into companies.

Santo Holding AG invests in Biotech & Life Sciences, HealthTech and Fintech.

Key people at Santo Holding AG include Andreas Strüngmann (Co-founder and owner), Thomas Strüngmann (Co-founder and owner) and Helmut Wolfgang Jeggle (Business Partner).

Santo Holding AG's holdings and investments include Südwestbank and Siemens Audiology Solutions (with EQT).