Willem de Rooij is an Investor at Bolster Investment Partners, whose known portfolio counts 10 companies.
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Investment focus
- Stage
- Late-StagePre-Seed
Contacts
Affiliated funds' portfolios
Investor at Bolster Investment Partners, whose known portfolio counts 10 companies
- WriteSea
- BTG Positioning Systems
- Careflex Zorg Groep
- Dinnissen
- Esschert Design
- Giesen Coffee Roasters
- Infoplaza
- Mark Climate Technology
- Oceanwide Expeditions
- Optima Cycles
Investor Profile
The listing covers sectors Climate, Commerce, Healthcare and Travel, and focus areas Consumer Goods, Electric Vehicle, Food & Beverage and Home & Garden. Startups operating in these areas may find Willem de Rooij relevant.
Stage-wise, the deals at Bolster Investment Partners cluster around Late-Stage and Pre-Seed rounds.
What the affiliated firm has backed is the closest available signal on whether Willem de Rooij is worth approaching.
Colleagues at Bolster Investment Partners
Hanneke Modderman
Investor
Amsterdam, Netherlands
Joost Bakhuizen
Investor
Amsterdam, Netherlands
Michiel van Wissen
Investor
Amsterdam, Netherlands
Ted Bolsius
Investor
Amsterdam, Netherlands
Robbert van Kampen
Investor
Amsterdam, Netherlands
Joost van der Sluis
Investment Director
Amsterdam, Netherlands
Martijn Fakkert
Associate
Amsterdam, Netherlands
Paul Vogelzang
Investor
Amsterdam, Netherlands
Sara van Assen
Investor
Randstad, Netherlands
Mark van Rijn
Managing Partner
Amsterdam, Netherlands
Frequently asked questions
Who is Willem de Rooij?
Willem de Rooij is a private equity investor based in Netherlands, listed as Investor at Bolster Investment Partners. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Willem de Rooij personally.
What does Willem de Rooij invest in?
Listed sectors include Climate, Commerce, Healthcare and Travel; listed focus areas include Consumer Goods, Electric Vehicle, Food & Beverage and Home & Garden. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Willem de Rooij invest at?
Bolster Investment Partners appears in Late-Stage and Pre-Seed rounds across its known deals, and Willem de Rooij is listed there as Investor. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Willem de Rooij listed at?
Willem de Rooij is listed as Investor at Bolster Investment Partners. 10 other people in the database share a firm with Willem de Rooij.
How do I contact Willem de Rooij?
A LinkedIn page is on file for Willem de Rooij. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal