2 Founders Backed by Bert de Haas (2026)

Bert de Haas founders (2)

Bert de Haas founders covers 2 founders on Cooll and S4 Energy. The most common sector is Climate (2). Members are based in 2 cities, led by Hengelo, Netherlands (1) and Rotterdam, Netherlands (1). Every founder below links to a profile with their company, backers, and the filings behind each round.

• Founders listed: 2
• Companies represented: 2
• Top sector: Climate (2 founders)
• Top location: Hengelo, Netherlands (1 founders)
• Locations represented: 2

• Ciaran Power — S4 Energy
• Sicco Rust — Cooll

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