General Info
Jacek Czarnecki – CEO & Co-Founder @ Fountain.li
Location: Warsaw
Country:
Industries:
Investment Regions: EU
Investment Stages: late-stage, pre-seed, seed, series-a
angel-individual
EU
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🤖 AI Activity Report
Status: very-active
AI Reasoning: LinkedIn shows Jacek Czarnecki co-founded Fountain (Fountain.li) with role ending 2021, but he has continued active roles and advisory/co-founder positions through 2025 and involvement with startups (Fountain and stablewatch). A recent activity is co-founding stablewatch in January 2025 – this indicates his last known investment/activity is within the past 6 months. The startup named in sources: Fountain (and stablewatch). Based on date calculations, tag assigned accordingly.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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