MCJ

VC firm · Boston, MA

Verified active in the last 12 monthsSEC-registered adviser

Venture firm based in Boston, MA. Most recent fund on file: MCJ 2023, L.P. ($100M offering), filed Jan 2024. Partners sit on the boards of 2 startups that raised recently.

“MCJ backs extraordinary founders driving the transition of energy and industry and solving the inevitable impacts of climate change.” (from the firm’s website)

Stages: Seed, Series A
Typical check (est.): $1M–$3M
Latest fund: $100M · Jan 2024
Last verified activity: May 2026

Focus

Climate & EnergyMedia, Gaming & Creator

Recent portfolio activity

DaisyChain Energy
Board seat · NY
May 2026
NetBox Labs
Board seat · NY
Apr 2023

Funds and vehicles on SEC file

MCJ 2023, L.P.
Fund · $100M offering
Jan 2024

Sources

SEC Form D: MCJ 2023, L.P.Jan 9, 2024
SEC adviser record: MCJ Venture ManagementMar 27, 2026
Firm websiteOct 12, 2026

Profile last verified Oct 12, 2026. Is this you? Correct or remove this profile.