Multi-Family Office

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Treïs Group

Treïs Group was established in 2008 by Jérôme David. The Halley family supplies the core capital; their wholesale business began in Cherbourg in 1898 and later...

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Treïs Group

Treïs Group was established in 2008 by Jérôme David. The Halley family supplies the core capital; their wholesale business began in Cherbourg in 1898 and later expanded into the global retail operation that became Promodès before its merger with Carrefour. The firm commits to direct co-investments, infrastructure, private equity and philanthropic vehicles. Asset classes include Energy Transition & Renewables, AgriTech & FoodTech, Circular Economy and Mobility & Transportation. Confirmed holdings comprise Agryco, Ecoalf, GetGo, Greenpac and RubberGreen. Co-investors have included Temasek in Agriconomie and Ernst Rosén in Rabbalshede Kraft. Deployment spans Europe, Asia, Africa and Oceania at early and growth stages. Additional offices sit in Singapore, Lisbon and Milan. Jérôme David serves as Founder and Managing Partner; Cian McComb acts as Principal. The group maintains membership in the Asian Venture Philanthropy Network and participates in Singapore family-office networks through the Wealth Management Institute. No operational events from the last 24 months appear in public records. The structural difference lies in the direct link between the fourth-generation Halley operating company and the investment mandate. Capital allocation follows an explicit intergenerational charter that requires active ownership and alignment with the family’s original wholesale-to-retail discipline.

General information

Firm type

Multi Family Office

Year founded

2008

AUM

Undisclosed

Location

Region

Europe

Country

United Kingdom

City

London

Corporate office

London, United Kingdom

Additional offices

Singapore · Lisbon · Milan

Principals

Jérôme David

Founder and Managing Partner

Cian McComb

Principal

Sector focus

Energy Transition & RenewablesAgriTech & FoodTechCircular EconomyMobility & Transportation

Frequently asked questions

Who runs investment decisions at Treïs Group?

Jérôme David serves as Founder and Managing Partner. Cian McComb holds the role of Principal. Decisions follow the family’s documented responsible-investment charter.

How does Treïs Group source proprietary deal flow?

Sourcing occurs through the Halley family’s European operating network and co-investor relationships. Confirmed partners include Temasek and Aliment Capital on Agriconomie.

Is Treïs Group structured as a single family office or does it operate more like a venture firm?

It functions as a multi-family office that also executes direct growth investments and SPVs. The structure combines advisory, asset-management and venture participation mandates.

Does Treïs Group participate in fund commitments or only direct deals?

Activity centres on direct co-investments and SPVs. Infrastructure and private-equity exposures appear alongside philanthropic vehicles.

What investment stages does Treïs Group typically target?

Early Stage and Growth are the stated stages. Portfolio examples include Agryco at growth and GetGo launched in 2021.

Where does the underlying wealth come from?

The Halley family built the capital through a wholesale enterprise founded in Cherbourg in 1898 that grew into the Promodès retail group.

Does Treïs Group maintain philanthropic structures, and how are they separated?

Fondation Paul-Auguste Halley exists as the family’s philanthropic vehicle. Investment and grant activities remain formally distinct.

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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