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The ability to perform

For us, investing means active participation. We believe in involved ownership, close collaboration, and providing the space and attention necessary to shape growth in a thorough and sustainable manner.

Meet our entrepreneurs

Entrepreneurship is at the core, both at Quadrum and with our partners. As co-entrepreneurs, we work closely with company management teams to realize their growth aspirations and guide them toward the next phase. Each story is unique, every company a new challenge. The path to a succesful business is equally diverse. That's why we prefer to let our entrepreneurs speak for themselves. After all, they tell their own stories the best.

Our Foundational Values

Stewardship

We manage our investments in a responsible and sustainable manner.

No-nonsense

With our down-to-earth, no-nonsense mentality, we keep our feet firmly rooted in reality. We also don't shy away from difficult decisions.

Entrepreneurship

As entrepreneurs, we understand the entrepreneur like no other. This mutual understanding forms the basis for the trust to move forward together, learn from each other, and inspire one another for the future.

Pragmatism

We pursue our objectives directly and operate with a strong focus on achieving results, all while maintaining a keen awareness of the broader context.

Integrity

We operate in a respectful and people-oriented manner, while always keeping the business interest in mind.

Creative

We use our creativity to identify unique opportunities and possibilities to maximize their protential.

Our track-record

Our seasoned team represents high-level management experience and expertise

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Broad sector knowledge

Sealte Q card
Sealteq logo light

Participation since 2024

About SealteQ SealteQ protects and preserves civil engineering, infrastructure and industrial structures as well as real estate objects in the residential and utility sectors.
The trainee company portfolio card
Trainee Company light

Participation since 2023

In June 2023, the companies GoodtobeBetter, Fincade, and STRADIS joined forces and continued under one new name: The Trainee Company
SW Ventiv portfolio
SW Ventiv light

Participation since 2023

Siebert & Wassink has become a renowned and leading player in the field of recruitment & selection, assessments and organisational advice in the North and East of the Netherlands.
Megahout portfolio card
Megahout light

Participation since 2022

Megahout operates nationwide as an importer, wholesaler and is the largest producer of finger jointed timber in the Netherlands
Novature portfolio card
Novature light

Participation since 2022

Novature is the new platform of Dynamics partners with a common ambition: digitally transforming large and small businesses through business applications based on Microsoft Dynamics and the Power Platform
Sigmax portfolio card
Sigmax light

Participation since 2022

Sigmax is an internationally operating software organization with a focus on safe and livable cities, public transport, and service organizations.
Lensonline portfolio card
Lens Online Light

Participation since 2022

LensOnlineĀ®, founded in 2004, is the first and largest contact lens website in the BeNeLux selling all brands of contact lenses.
JASA portfolio card
Jasa logo light

Participation since 2022

JASA develops, assembles and produces packaging machines and complete weighing and packaging lines. As a system integrator JASA takes full responsibility for the total sorting, weighing and packaging process and the filling and sealing of packages, robotized or not.
Thuisinbouwen portfolio card
Thuisinbouwen light

Participation since 2022

ThuisinBouwen specialises in the full-service development and realisation of small-scale housing projects (1-100 homes), particularly in North and South Holland, Flevoland, Utrecht, Gelderland, North Brabant and Zeeland.
Springboard network portfolio card
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Participation since 2021

The Dutch Avit Group and the Danish Wingmen, together Springboard, are building a leading European network of like-minded entrepreneurial IT infrastructure and cybersecurity specialists.
Human protection portfolio card
Human protection light

Participation since 2021

Human Protection assists in providing as much freedom and safety as possible during risky situations in healthcare.
Interstellar portfolio card
Interstellar light

Participation since 2021

Interstellar is a collection of generalist and specialist IT companies. All companies are autonomous enterprises with their own quality, specialisation and identity.
Emm portfolio card
Emm light

Participation since 2021

Since its foundation in 1955, EMM has become a global supplier and innovation partner to the paint-processing industries, including automotive, aviation, marine and industrial.
Rockmed portfolio card
Rockmed light

Participation since 2020

Rockmed Pharma was founded in 2013 and is a supplier of ophthalmic medicines and medical devices. The company is a carve-out of Rockmed Group, the leading independent ophthalmic player in the Benelux.
Corus portfolio card
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Participation since 2020

Corus, the leading dental laboratory group in Spain, France, Portugal, Belgium and the Netherlands.
Royal sens portfolio card
Royal sens light

Participation since 2019

Royal Sens, an international producer of high-quality labels for food and non-food packaging since 1896, has been sold by its shareholders to the investment company Quadrum Capital.
State of art portfolio card
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Participation since 2019

State of Art is a men's clothing brand that is positioned in the middle to higher price segment and operates mainly in the Benelux.
Ace portfolio card
Ace light

Participation since 2019

The Ace Group consists of several agencies, including Ace and Newborn. By successfully binding consumers to brands, Ace has become one of the leading digital agencies in the Netherlands.
MD portfolio card
Management drives light

Participation since 2018

Management Drives is a SaaS company, with unique software, its own consultants, and certification from external professionals.
Ace pharma portfolio card
Ace pharma light

Participation since 2017

ACE Pharmaceuticals is a unique independent pharmaceutical company that focuses on essential medicines.
Improven portfolio card
Improven light

Participation since 2016

Improven is an amalgamation of Improve, Prove and Proven - optimising customer performance with demonstrable results and a proven approach.
VB portfolio card
VB light

Participation since 2015

Air suspension is increasingly becoming an important aspect in the light commercial vehicle industry.
Lightwell portfolio card
Lightwell light

Participation since 2015

Lightwell specialises in the development of innovative, sustainable LED lighting. Time and again, this method of lighting proves its qualitative and user-friendly added value.