# HMSA Group

HMSA Group is a Multi Family Office based in London, United Kingdom.

## Overview

- **Organization type:** Multi Family Office
- **Headquarters:** London, United Kingdom
- **Region:** Europe
- **Address:** London, United Kingdom
- **Founded:** 2013
- **Assets under management:** Undisclosed
- **Website:** hmsa-group.com
- **LinkedIn:** https://www.linkedin.com/company/hmsa-group

## Regulatory record

- **Reports private funds:** No

## About

HMSA Group was established in 2013 by Geoff Melamet. The firm provides multi-family office services that combine investment management with corporate administration and concierge support. Investment activity spans private equity, real estate, private credit, fund-of-funds commitments and insurance-linked instruments. Confirmed sector exposure includes InsurTech, Healthcare Services and PropTech. Geographic reach covers Europe, North America, Asia and Oceania. The firm also maintains a mixed-use property portfolio in London and Geneva plus a yacht-management unit. Team size and total deployment remain undisclosed. Geoff Melamet serves as CEO while Marc Pimstein acts as CFO. Additional directors operate from Geneva and Dublin. HMSA participates in industry networks including STEP, ARIF and the Private Client Dining Club. The firm operates as a founding member of Trust Allies, an alliance of independent trust companies. This structure supports coordination of fiduciary vehicles in Switzerland, the UK and Hong Kong alongside direct investment mandates.

## Sectors

- InsurTech
- Healthcare Services
- PropTech

## People

- Geoff Melamet — Founder and CEO
- Marc Pimstein — CFO
- Prieur Du Plessis — Advisory Board Member
- Jonathan Melamet — Director of HMSA Ireland
- Eric Hohberger — Director

## Questions

### Who runs investment decisions at HMSA Group?

Geoff Melamet serves as Founder and CEO. Marc Pimstein acts as CFO. Prieur Du Plessis sits on the advisory board.

### Is HMSA Group structured as a single family office or multi-family office?

HMSA Group operates as a multi-family office serving multiple affluent families with shared infrastructure.

### What asset classes does HMSA Group deploy into?

The firm allocates across private equity, real estate, private credit, fund-of-funds and insurance-linked securities.

### Which regions does HMSA Group cover?

HMSA maintains exposure in Europe, North America, Asia and Oceania through direct and fund investments.

### Does HMSA Group maintain philanthropic structures?

Geoff Melamet serves as Trustee of the Yad Vashem UK Foundation. No further separation details are disclosed.

## Related profiles

- [HMP Family](https://altss.com/profile/hmp-family)
- [HNW Services Inc.](https://altss.com/profile/hnw-services-inc)

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

Canonical page: https://altss.com/profile/hmsa-group

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