J4.Ventures
Overview
J4.Ventures is a venture capital firm based in New York City, focusing on early-stage investments in technology and tech-enabled businesses across the United States. The firm seeks exceptional entrepreneurs addressing large markets with innovative solutions. Their investment strategy emphasizes sectors such as artificial intelligence, big data, blockchain, cybersecurity, data analytics, enterprise solutions, fintech, healthcare, insurtech, platforms (PaaS), software as a service (SaaS), and software/internet. J4.Ventures typically invests in companies at the pre-seed, seed, and Series A stages, aiming to support startups with high growth potential. The firm's portfolio includes companies like Sonar, which received an investment on February 23, 2025. J4.Ventures is committed to fostering innovation and driving success for its portfolio companies through strategic partnerships and support.
Investment Focus
- Exceptional entrepreneurs addressing large markets with technology-based or enabled solutions
Portfolio Companies
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Unlock full contacts →Frequently asked questions about J4.Ventures
What sectors does J4.Ventures invest in?
J4.Ventures invests in Healthcare, FinTech, Blockchain, InsurTech, Cybersecurity and Big Data, and is based in New York, United States. J4.Ventures is listed as a venture capital in the ConnectSafely investor database.
What stage does J4.Ventures invest at?
J4.Ventures backs companies at Pre-Seed, Seed and Series A.
Which regions does J4.Ventures invest in?
J4.Ventures invests across United States.
Who are the partners at J4.Ventures?
Team members listed for J4.Ventures include Jamie Rapperport (General Partner) and Bruce Jaffe (General Partner).
What companies has J4.Ventures invested in?
J4.Ventures's portfolio includes Sonar.
How do I contact J4.Ventures?
J4.Ventures's contact details — including LinkedIn — are listed in the ConnectSafely investor database, along with its website and the LinkedIn profiles of its partners.
Last updated · Source: ConnectSafely investor database