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Multi Family OfficePuts its own capital into companiesLAST VERIFIED Oct 2026 · 3 SOURCES

Aternus Family Office

Also known as ATERNUS, a.s.

Investment vehicle of the Wałach brothers, founders of Walmark, with former Walmark managers Roman Kantor and Petr Turoň; run from Třinec, it invests in start-ups alongside VC funds.

USEFUL FOR Co-investors

Identity

WEALTH ORIGIN
Walmark (dietary supplements and OTC medicines) and the Relax juice brand; Walmark sold to Mid Europa Partners in 2016
HEADQUARTERS
Třinec, Czechia

Investment approach

ROUTES
Companies (own capital)
STRATEGIES
Venture capital

Overview

Aternus (ATERNUS, a.s., registered seat Prague 4) is the investment vehicle through which Mariusz, Adam and Waldemar Wałach invest the family wealth from Walmark, the supplements maker they sold to Mid Europa Partners in 2016. Forbes Czech Republic reported in 2021 that former Walmark executives Roman Kantor and Petr Turoň hold small stakes, that the group runs it from Třinec, and that it co-invests in start-ups with other funds. The same report said a SICAV fund with Linet owner Zbyněk Frolík would be launched for direct investments; ATERNUS SICAV, a.s. was registered in May 2021.

Holdings & investments

INVESTMENT ARMS & VEHICLES

  • ATERNUS SICAV, a.s.
    Investment fund company set up in 2021 for direct investments, with Linet owner Zbyněk Frolík as a co-investor

People

  • Mariusz Wałach
    Co-owner · source
  • Adam Wałach
    Co-owner · source
  • Waldemar Wałach
    Co-owner · source
  • Roman Kantor
    Minority partner · source
  • Petr Turoň
    Minority partner · source

Frequently asked questions

Aternus Family Office is a multi family office based in Třinec, Czechia.

Aternus Family Office invests on behalf of the Wałach family (Walmark (dietary supplements and OTC medicines) and the Relax juice brand; Walmark sold to Mid Europa Partners in 2016).

Aternus Family Office invests its own capital into companies. Its stated asset mix includes venture capital.

Key people at Aternus Family Office include Mariusz Wałach (Co-owner), Adam Wałach (Co-owner), Waldemar Wałach (Co-owner) and Roman Kantor (Minority partner).