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 is a new challenge. The path to a successful 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 stay realistic. 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 goals 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
Measurable results
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portfolio companies
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realized exits
Broad sector knowledge
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.
Participation since 2023
In June 2023, the companies GoodtobeBetter, Fincade, and STRADIS joined forces and continued under one new name: The Trainee Company
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.
Participation since 2022
Megahout operates nationwide as an importer, wholesaler and is the largest producer of finger jointed timber in the Netherlands
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
Participation since 2022
Sigmax is an internationally operating software organization with a focus on safe and livable cities, public transport, and service organizations.
Participation since 2022
LensOnline®, founded in 2004, is the first and largest contact lens website in the BeNeLux selling all brands of contact lenses.
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.
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.
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.
Participation since 2021
Human Protection assists in providing as much freedom and safety as possible during risky situations in healthcare.
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.
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.
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.
Participation since 2020
Corus, the leading dental laboratory group in Spain, France, Portugal, Belgium and the Netherlands.
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.
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.
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.
Participation since 2018
Management Drives is a SaaS company, with unique software, its own consultants, and certification from external professionals.
Participation since 2017
ACE Pharmaceuticals is a unique independent pharmaceutical company that focuses on essential medicines.
Participation since 2016
Improven is an amalgamation of Improve, Prove and Proven - optimising customer performance with demonstrable results and a proven approach.
Participation since 2015
Air suspension is increasingly becoming an important aspect in the light commercial vehicle industry.
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.