# Martek

Martek is a Multi Family Office based in Neuilly-sur-Seine, France.

## Overview

- **Organization type:** Multi Family Office
- **Headquarters:** Neuilly-sur-Seine, France
- **Region:** Europe
- **Address:** Neuilly-sur-Seine, France
- **Assets under management:** Undisclosed
- **Website:** fr.martek.fr
- **LinkedIn:** https://www.linkedin.com/company/martek

## Regulatory record

- **Reports private funds:** No

## About

Marcel Katz and René Katz founded Martek. The firm pursues private equity and real estate strategies for client families. Its approach draws from entrepreneurial roots without a single disclosed wealth source. Martek deploys capital through private equity, real estate, private credit, and infrastructure. It executes direct co-investments and SPVs alongside fund-of-funds commitments. The firm covers Europe and North America with additional exposure in Asia, Africa, and South America. No team size or AUM figures appear in public materials. Simon Wachsberg serves as Investment Director with focus on US interests. Martek maintains no disclosed adjacent vehicles or club memberships beyond philanthropic ties noted for family members. Martek structures decisions around majority ownership in operating companies. This creates direct governance involvement distinct from pure fund commitments.

## Sectors

- Private Equity
- Real Estate
- Industrial Tech
- ClimateTech
- PropTech

## People

- Marcel Katz — Founder
- René Katz — Founder
- Simon Wachsberg — Investment Director

## Questions

### Who runs investment decisions at Martek?

Marcel Katz and René Katz founded the firm. Simon Wachsberg acts as Investment Director with responsibility for US-related interests.

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

Martek uses both direct co-investments and SPVs as well as fund-of-funds commitments.

### What investment stages does Martek typically target?

The firm targets early stage, growth, and seed opportunities.

### Where does Martek invest geographically?

Martek maintains exposure across Europe, North America, Asia, Africa, the Middle East, Oceania, and South America.

### What asset classes does Martek allocate to?

Allocations include private equity, real estate, private credit, infrastructure, and hedge funds.

## Related profiles

- [Marr Holdings](https://altss.com/profile/marr-holdings)
- [Marwah Steels](https://altss.com/profile/marwah-steels)

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

Canonical page: https://altss.com/profile/martek

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