Koen Seijen
Angel investor in Milan
Milan, Lombardy
Koen Seijen, Angel investor in Milan is an active investor based in Milan, Lombardy. This profile covers what Koen Seijen backs, at which stage, and how founders can reach out in 2026.
Mr. Koen van Seijen serves as Senior Manager, EMEA at Toniic. He also serves as Advisor at The First Thirty Ventures. He is a Founding Partner & serves as Director at Generation-RE Holdings. He serves as Advisor at reNature (Other Agriculture). He has extensive expertise in increasing deal flow, scouting, and selecting social enterprises with scalable business models. He has over five years of experience, with a strong focus on the sustainability sector, agriculture, and Africa. In 2010, he combined his passions for storytelling and sustainability when he co-founded StoryTravelers, a company that promotes sustainable tourism businesses using visual stories. Before this, he was also part of the founding team of the Impact Hub Milan and spent time as a Host at the Impact Hub Rotterdam. He also supported Aqua-Spark, an impact investing fund based in Utrecht, focused on sustainable aquaculture companies. As part of the deal flow team at AquaSpark, he created the deal flow pipeline from scratch and went on to screen over 350 companies. He studied Business Economics at the Universiteit van Tilburg and also serves as an Advisor for the Ecosystem Return Foundation.
- Investor type
- AngelVCPE
- Stages
- Early Stage Venture
- Invests in
- Food & BeverageAgTech & AgricultureMobility & LogisticsClimate & Energy
- Location
- Milan, Lombardy
- Typical check
- $500K
- Past investments
- 9
Notable investments
How to reach Koen Seijen
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Round Funded. "Koen Seijen." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/koen-seijen
Frequently Asked Questions
What does Koen Seijen invest in?
Koen Seijen invests in Food & Beverage, AgTech & Agriculture, Mobility & Logistics and Climate & Energy, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Koen Seijen invest at?
Koen Seijen typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Koen Seijen's typical check size?
Koen Seijen typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
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