# Oasis

Oasis is a Single Family Office based in Austin, Portugal.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** Austin, Portugal
- **Region:** Europe
- **Address:** Porto, Portugal
- **Founded:** 2025
- **Assets under management:** Undisclosed
- **Website:** oasisgroup.io
- **LinkedIn:** https://www.linkedin.com/company/oasisg/

## About

Oasis was established by Hillel Gassenbauer, Amir Madeson and Uri Shalom Maeir. The office preserves and manages family capital from its base in Porto. Oasis allocates across public equities, private equity, real estate and hedge funds. It executes activist positions and direct real-estate deals. Confirmed holdings include mixed-use properties Laranjais and Saboaria in Porto, the Avis commercial asset on Rua da Fábrica, and the Alcântara mixed-use site in Lisbon. The firm also maintains exposure in North America, Asia and the Caribbean. The team includes Bernardo Frazão Sardinha as Head of Corporate Finance & Real Estate Finance and Dóris Santos as Finance and Operations Manager. No additional offices or adjacent vehicles are recorded. No operational events from the last 24 months appear in available records. Oasis maintains a direct-ownership model over operating real-estate assets rather than relying solely on external fund commitments.

## Sectors

- PropTech
- Healthcare Services
- Industrial Tech
- Mobility & Transportation
- EdTech
- Gaming
- Media & Entertainment

## People

- Hillel Gassenbauer — Founder and Managing Director
- Amir Madeson — Founder and Managing Director
- Uri Shalom Maeir — Founder and Managing Director
- Bernardo Frazão Sardinha — Head of Corporate Finance & Real Estate Finance
- Dóris Santos — Finance and Operations Manager

## Questions

### Who runs investment decisions at Oasis?

Hillel Gassenbauer, Amir Madeson and Uri Shalom Maeir serve as founders and managing directors. Bernardo Frazão Sardinha leads corporate and real-estate finance.

### Does Oasis participate in fund commitments or only direct deals?

Oasis executes both direct real-estate acquisitions and allocations to private equity and hedge funds.

### What investment stages does Oasis target?

The firm maintains public-equities exposure and private-market direct investments.

### Where does Oasis invest geographically?

Confirmed activity spans Europe, North America, Asia and the Caribbean.

### How is Oasis related to its real-estate holdings?

Oasis holds direct ownership of mixed-use and commercial assets including Laranjais, Saboaria, Avis and Alcântara.

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- [Oakley Services](https://altss.com/profile/oakley-services)
- [Obelysk](https://altss.com/profile/obelysk-inc)

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Last updated: 2026-06-03T20:00:00.000Z

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