Multi-Family Office

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InsingerGilissen

InsingerGilissen Bankiers N.V. operates as a multi-family office in Amsterdam.

InsingerGilissen

InsingerGilissen Bankiers N.V. operates as a multi-family office in Amsterdam. It provides wealth management, investment advisory, and financial planning services to high-net-worth families and individuals. The firm preserves and grows client assets through solutions across asset classes and jurisdictions and serves as a partner for families that seek oversight and stewardship of their financial interests.

General information

Firm type

Multi Family Office

Year founded

AUM

$30B – $40B (Altss estimate)

Location

Region

Europe

Country

Netherlands

City

Amsterdam

Corporate office

Herengracht 537, 1017 BV Amsterdam, Netherlands

Additional offices

The Hague · Eindhoven · Zwolle · Groningen · Rotterdam

Principals

Jeroen Stuart

Head of Communications

Sector focus

ClimateTechEnergy Transition & RenewablesWaterTechCircular Economy

Frequently asked questions

Who ultimately owns InsingerGilissen?

InsingerGilissen is a subsidiary of Quintet Private Bank (Europe) S.A., which is itself owned by Precision Capital LLC — a Luxembourg-based holding company of the Qatari Al-Thani family. The chain means Al-Thani family capital and governance ultimately oversee the firm, though day-to-day operations are managed locally in the Netherlands under Dutch banking regulation.

Is InsingerGilissen a single-family office or a commercial private bank?

It operates as a regulated Dutch private bank and multi-family office. Unlike a pure single-family office, InsingerGilissen serves external clients — typically Dutch families and entrepreneurs with at least €1 million in investable assets — while benefiting from the capital backing and cross-border network of its Al-Thani-owned parent, Quintet.

How does InsingerGilissen invest client capital?

The firm combines discretionary portfolio management with access to external specialist funds. Asset classes include commodities, hedge funds, fund-of-funds, infrastructure, and direct real estate. Its thematic research tilts toward ClimateTech, Energy Transition & Renewables, WaterTech, and the circular economy, and it holds confirmed exposures to AI/ML and semiconductor themes within a mid-cap mandate.

Does InsingerGilissen co-invest alongside other Quintet entities?

Yes. As the Dutch hub of Quintet Private Bank, InsingerGilissen can source co-investment opportunities alongside sister banks Brown Shipley (UK), Puilaetco (Belgium), and Merck Finck (Germany). This cross-border pipeline gives Dutch clients access to deal flow that a standalone domestic private bank would not typically see.

What is the InsingerGilissen Philanthropy Trusts Estates B.V.?

It is a dedicated legal vehicle for charitable planning and structured giving, separate from the core banking and investment operations. It allows client families to manage philanthropic capital with the same fiduciary framework used for their investable wealth.

What does the IEX Gouden Stier award signal about the firm?

InsingerGilissen has won 'Beste Private Bank van Nederland' at the IEX Gouden Stier awards five times in ten years (most recently referenced in 2026). The award is based on client and industry assessments of service quality, investment performance, and fiduciary conduct — and the repeated wins underscore the firm's consistency in a market where few competitors match that streak.

How does Quintet's UNPRI signatory status affect InsingerGilissen?

Quintet Private Bank is a signatory to the United Nations Principles for Responsible Investment, a commitment that flows down to InsingerGilissen's investment process. The firm also participates in Climate Action 100+, the collaborative investor initiative that engages large corporate emitters on climate governance, further embedding ESG criteria into manager selection and direct-investment decisions.

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