Black Opal Ventures, LLC
Emerging managerSEC exempt reporting adviser (private fund adviser exemption, under $150M).
- HQ
- NY
Black Opal Ventures, LLC is a venture firm that invests in companies using technology to solve the world's biggest problems. Dr. Tara Bishop and Eileen Tanghal are Founders and Managing Directors, and Justin Craib-Cox is Head of Investments. Listed portfolio companies include TigerGraph, Blaze, AuthMind, Parasail, Hyro, Outpace, FlyteHealth, Optellum, Empatica, Conceivabe, Oath, GV20, Chamber, and Eridu.
01 · Says / Does
| Tag | Says | Does |
|---|---|---|
| Stages | Not stated | Not enough dated deals |
| Sectors | Cybersecurity, Healthtech | Not enough dated deals |
| Regions | Not stated | Not enough dated deals |
Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.
02 · Fund history
| Fund | Year | Size | Status |
|---|---|---|---|
| Black Opal Ventures Fund II, L.P. Black Opal Ventures invests in companies using technology to solve the world's biggest problems, with focus areas in healthtech, tech bio, infrastructure, and cybersecurity. Inferred from the firm's website | approx. 2026 | $75M (Form D) | Raising |
| Black Opal Ventures Fund I, L.P. Black Opal Ventures invests in companies using technology to solve the world's biggest problems, with focus areas in healthtech, tech bio, infrastructure, and cybersecurity. Inferred from the firm's website | 2023 | $62.66M (Form D) | Open, writing first checks |
| Black Opal Ventures Fund I, L.P. Black Opal Ventures invests in companies using technology to solve the world's biggest problems, with focus areas in healthtech, tech bio, infrastructure, and cybersecurity. Inferred from the firm's website | 2022 | $57.54M to $58.05M (Form D and SEC adviser filing) | Late investment period |
03 · People across funds
- Eileen Tanghal, Founder & Managing Director
Black Opal Ventures Fund II, L.P. (Named on Form D); Black Opal Ventures Fund I, L.P. (Named on Form D); Black Opal Ventures Fund I, L.P. (Named on Form D)
- Tara Bishop, Founder & Managing Director
Black Opal Ventures Fund II, L.P. (Named on Form D); Black Opal Ventures Fund I, L.P. (Named on Form D); Black Opal Ventures Fund I, L.P. (Named on Form D)
- Dr. Carina Tyrrell, MB BChir, MPH, Venture Partner
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Eve Castel, CFA, Venture Partner
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Franco Danesi, MBA, Venture Partner
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Hanna Edgren, Chief of Staff & Venture Analyst
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Joseph Jeong, PhD, Venture Partner
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Justin Craib-Cox, Head of Investments
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Karthik Ramasubramanian, Venture Associate
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Simon Segars, Executive Advisor
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
- Tamra Lair, PhD, Industry Advisor
Black Opal Ventures Fund II, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team); Black Opal Ventures Fund I, L.P. (Team)
04 · Recent deals
No dated deals found yet.
05 · Latest from the firm
No news from the firm's website yet.
06 · Sources
- https://www.blackopalventures.com
- https://www.blackopalventures.com/team-1
- https://www.blackopalventures.com/
- https://www.blackopalventures.com/blog
Fund dates and sizes are from SEC Form D filings.
Last verified: Oct 28, 2026