Koen Seijen

Active Investor

Co-Founder at Toniic

Milan, Lombardy

Koen Seijen, Co-Founder at Toniic 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: SaaS & EnterpriseEdTechFoodTech & AgricultureAgTech & AgricultureGaming & EntertainmentMedia & ContentImpact & Social Enterprise
Location: Milan, Lombardy
Typical check: $500K
Past investments: 9

Notable investments

Soil HeroesMeridia (Amsterdam)Investment Ready Program NLSnappCarFastnedThe Hub MilanoMeridiaAgriFinance AfricareNature (Other Agriculture)

How to reach Koen Seijen

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Frequently Asked Questions

What does Koen Seijen invest in?

Koen Seijen invests in SaaS & Enterprise, EdTech, FoodTech & Agriculture and AgTech & Agriculture, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.