Corporate Investor

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SISKA Immobilien

Günter Heuberger leads SISKA Immobilien, a Swiss corporate real-estate owner-operator with a direct portfolio across Zurich, Thurgau, St. Gallen, and Aargau.

SISKA Immobilien logo

SISKA Immobilien

SISKA Immobilien is a corporate investor based in Winterthur, Switzerland, focusing on European markets.

General information

Firm type

Corporate Investor

Year founded

1954

AUM

Undisclosed

Location

Region

Europe

Country

Switzerland

City

Winterthur

Corporate office

Winterthur, Switzerland

Principals

Günter Heuberger

Managing Director and Delegate of the Board, SISKA Heuberger Holding AG

Altss tracks 4 additional named team members for this firm — including direct investment leads, IR, and operating principals not listed on the public website.

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Sector focus

Real Estate

Frequently asked questions

Who makes investment decisions at SISKA Immobilien?

Günter Heuberger serves as Managing Director and Delegate of the Board of SISKA Heuberger Holding AG, the parent entity. Rainer Heuberger owns the affiliated management company SISKA Verwaltungs AG and also holds public office as a member of the Zurich Cantonal Council. Third-generation family members Chantal and Alexander Heuberger hold board seats, with Alexander directly involved in real estate management.

Does SISKA invest in fund commitments or only direct real estate?

SISKA deploys capital exclusively into direct, wholly owned or majority-controlled Swiss real estate. There is no evidence of fund commitments, co-investments alongside external GPs, or allocations to other asset classes. The firm acquires, develops, and manages its own properties through its in-house management company.

What types of properties does SISKA own?

The portfolio spans residential, commercial, and mixed-use properties. Named assets include Einkaufszentrum Neuwiesen, Hotel Banana City, Einkaufszentrum Illuster in Uster, Haus Adeline Favre, and the Tilia Seuzach residential development. The firm concentrates on properties in the cantons of Zurich, Thurgau, St. Gallen, and Aargau.

Where does the Heuberger family wealth originate?

Robert and Ruth Heuberger founded the real estate company in 1954. Over seven decades, the family built a portfolio of commercial and residential properties in Switzerland, primarily in the greater Zurich region. The wealth remains concentrated in the operating company and its directly held real estate.

What is the relationship between SISKA Immobilien AG and SISKA Heuberger Holding AG?

SISKA Heuberger Holding AG is the parent holding entity that controls the group's property interests. In September 2020, the board renamed the operating firm to SISKA Immobilien AG. The family also maintains SISKA Verwaltungs AG for property management services and a dedicated pension foundation for employees.

Does SISKA have philanthropic or non-investment structures?

Yes. The family established the Robert und Ruth Heuberger-Stiftung, a charitable foundation. Additionally, SISKA maintains the Personalvorsorgestiftung der SISKA Immobilien AG, a pension foundation for its employees. These are structurally separate from the property-owning entities.

How is the next generation involved in leadership?

Third-generation members Chantal and Alexander Heuberger have taken board roles. Alexander Heuberger also functions as Real Estate Manager, indicating operational involvement. Günter and Rainer Heuberger — sons of the founders — hold the most senior governance positions through the holding company and management entities.

Profile maintained by using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.

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