J2 Ventures Advisors, LLCFirm match from fund name (lower confidence)
J2 Ventures Brookhaven Fund, L.P.
Raising
Raising: Form D reports no first sale yet
- Vintage
- Unknown
- Fund size
- $250M (Form D)
- Stages
- Not stated
- Sectors
- Cybersecurity, Medical devices
- Regions
- Not stated
01 · Thesis
J2 Ventures invests in early-stage companies pioneering technologies across advanced computing, biomedical engineering, cybersecurity, and infrastructure. The firm says it works closely with founders as an integrated part of their team.Inferred from the firm's website
02 · Initial check
$2.5M to $4.17M (estimated from fund size)
Estimated from Form D
03 · Who to approach
Named on this fund's Form D
- Michael Harstrick, Manager of the General Partner of the Issuer
- Jonathan Bronson, Managing Partner, Co-Founder
04 · Deals
No deals attributed to this fund yet.
05 · Evidence
Firm-wideJ2 Ventures invests in early-stage companies across advanced computing, biomedical engineering, cybersecurity, and infrastructure.
We fuel early-stage companies pioneering technologies across advanced computing, biomedical engineering, cybersecurity, and infrastructure.
https://www.j2vp.com/
06 · Sources
Last verified: Oct 28, 2026