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Active Capital Company
Active Capital Company is a Netherlands-based private equity firm founded by Albert Hartog and Dick Zeldenthuis.
Active Capital Company
Active Capital Company is a Netherlands-based private equity firm founded by Albert Hartog and Dick Zeldenthuis. Hartog previously built CleanLeaseFortex from a single laundry shop into a 20-branch industrial textile business, then spent nearly a decade in South Africa’s automotive and mining sectors — operating experience that shapes the firm’s thesis that industrial SMEs need embedded management, not just capital. Zeldenthuis brought turnaround skills from his role as CFO of JVC Benelux and an accounting foundation at KPMG. The firm invests in Dutch and German companies with revenue between €10 million and €100 million, targeting production, technical wholesale, and business services sectors. The strategy turns on a structured three-phase model: transaction, transformation, and exit. ACC deploys capital via direct equity investments — owning 10 portfolio companies across 11 countries, employing roughly 3,700 people — from four distinct fund vintages. Transformation is the engine: partners spend four days per week on-site implementing ACC standards, pursuing geographic expansion through new facilities and cross-border sales teams, accelerating innovation via product development, and layering sustainability practices into operations to strengthen exit positioning. The portfolio is concentrated in industrial niches; confirmed holdings span manufacturing and technical wholesale verticals, though individual portfolio-company names are not publicly listed on the primary website. Total assets under management stand at €184 million across four funds, with a team of 15 professionals operating from Amsterdam and Munich. The partnership includes Managing Partner Dick Zeldenthuis, Partner Mels Huige — a board member of the Dutch Private Equity Association — and Partner Hartwig Ostermeyer, who runs German deal sourcing from the Munich office. ACC maintains the Timbo Africa Foundation as a philanthropic vehicle, funding wildlife-corridor creation and youth conservation training in Botswana and South Africa alongside Dutch cancer-research grants. The firm recently continued its build-out of the junior investment team, converting an intern into an Investment Analyst role in June 2024, signaling steady organizational growth beneath the partnership tier. What sets ACC apart structurally is its explicit 100-day plan discipline, co-drafted with sellers and industry experts before a deal closes. This pre-close operating blueprint — combined with a partner-level commitment to four-day-per-week portfolio-company immersion — functions as an in-source operating partner model unusual for a firm of its size. Rather than relying on external consultants, ACC embeds its own restructuring and expansion capability directly into the acquired companies from transaction signing through exit.
General information
Firm type
Private Equity
Year founded
—
AUM
€184M (per firm website, 2026)
Location
Region
Europe
Country
Netherlands
City
Amsterdam
Corporate office
Vossiusstraat 13A, 1071 AC Amsterdam, Netherlands
Additional offices
Munich, Germany
Principals
Dick Zeldenthuis
Managing Partner
Albert Hartog
Co-founder & advisor
Mels Huige
Partner
Hartwig Ostermeyer
Partner
Sector focus
Frequently asked questions
Who leads investment decisions at Active Capital Company?
Dick Zeldenthuis, as Managing Partner, leads the firm alongside Partners Mels Huige and Hartwig Ostermeyer. Huige focuses on structuring acquisitions and exits and is a board member of the Dutch Private Equity Association. Ostermeyer runs the Munich office and is responsible for German deal sourcing. Co-founder Albert Hartog advises the investment team but is not listed in day-to-day management.
How does Active Capital Company source proprietary deal flow?
ACC runs a dual-country sourcing operation focused exclusively on the Netherlands and Germany. Partner Hartwig Ostermeyer leads local deal origination from Munich, while the Amsterdam team screens Benelux opportunities. The firm does not run an auction-process model — its transaction phase emphasizes direct engagement with sellers and co-drafting a 100-day transformation plan before close, which can differentiate offers in founder- and family-owned business transitions.
What is Active Capital Company's typical holding period and exit approach?
ACC does not publish a standard holding period but structures its process so that 'every strategic decision' made during the holding period focuses on exit positioning. The firm determines the exit moment by assessing four criteria: organization, culture, growth, and innovation readiness at the portfolio company. Exits are typically sales of the transformed business, with Partner Mels Huige directly responsible for exit execution.
What investment criteria does Active Capital Company apply?
ACC targets small and medium-sized companies headquartered in the Netherlands or Germany with revenues between €10 million and €100 million. The firm invests exclusively in production, technical wholesale, and business services sectors. Deals are executed primarily as buyouts, with the firm also participating in recapitalizations, successions, and add-on acquisitions. ACC does not invest in venture-stage or seed-stage companies.
How is Active Capital Company's team involved operationally post-acquisition?
The partnership commits to spending four days per week at portfolio companies, implementing what the firm calls 'ACC standards.' This includes driving geographic expansion through new facilities and sales teams, funding product-development innovation, and restructuring company culture toward sustainability metrics. The 100-day plan, drafted jointly with the seller and industry experts before deal close, functions as the primary post-acquisition operating manual.
Does Active Capital Company maintain any philanthropic structures?
Yes, ACC operates the Timbo Africa Foundation, which finances wildlife-corridor projects connecting nature reserves in Botswana and South Africa and supports youth training for conservation careers. The foundation also directs funds to cancer research in the Netherlands. The foundation is run separately from the private equity funds but is listed as part of the firm's responsible-investment framework.
What is Active Capital Company's known posture on co-investments?
ACC has not disclosed a formal co-investment program for external limited partners. The firm operates as a pooled-fund manager deploying capital from four vintages into wholly controlled portfolio companies. The 100-day plan approach and heavy partner time commitment to each asset suggest a control-equity model rather than a minority- or club-deal structure, though the firm's site does not address LP co-investment rights explicitly.
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