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Venture Capital
Boston, MA
MCJ backs extraordinary founders driving the transition of energy and industry and solving the inevitable impacts of climate change.
Data as of (this record's last observation) from federal regulator filings, firm and issuer disclosures. Page built and rebuilt at most every 15 minutes.
| Fund | Vintage | Lifecycle | Form D sold | GAV | LPs |
|---|---|---|---|---|---|
| MCJ 2023, L.P. | 2023 | Active deployment | $68.1M | $51.3M | 0 |
| MCJ 2023 Nqp, L.P. | 2023 | Active deployment | n/a | $7.8M | 0 |
| MCJ 2023 Qp, L.P. | 2023 | Active deployment | n/a | $19.6M | 0 |
| Company | State | Stage | Round size | Partner | Attribution | Observed |
|---|---|---|---|---|---|---|
| Join Our Talent System | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Face Plant | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Food Agriculture & Land Use | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| DG Matrix Inc. | Nc | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Pravah | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Terrawise | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Standard Nuclear, Inc. | Tn | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Archimetis | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Industrial & Manufacturing | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Pravah Mmbgg | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Hammerhead AI | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Unlimited Industries | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Built Environment | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Reservoir | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Rodatherm | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Aalo Atomics | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Aalo | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Lgnd | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Exowatt | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Light | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Management & Reporting | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Rhizome | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Recheck | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| DaisyChain Energy Inc. | NY | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Daisychain | n/a | n/a | n/a | n/a | Unknown | Sep 16, 2026 |
| Investor | Co-investor | Shared deals | Shared companies | Last observed | Strength |
|---|---|---|---|---|---|
| Acclimate Ventures | MCJ Venture Management | 1 | 1 | Nov 18, 2025 | One time |
| Carte Verte Management LLC | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| AINA Climate AI Ventures | MCJ Venture Management | 1 | 1 | Nov 18, 2025 | One time |
| Sadia Raveendran | MCJ Venture Management | 1 | 1 | Nov 18, 2025 | One time |
| Matrix | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| Vamosventures Management Company, LLC | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| Bombellii Ventures | MCJ Venture Management | 1 | 1 | Nov 18, 2025 | One time |
| MCJ Venture Management | WovenEarth Ventures | 1 | 1 | Nov 18, 2025 | One time |
| Space Angels | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| Seedcamp Investment Management LLP | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| Envision Ventures | MCJ Venture Management | 1 | 1 | Nov 18, 2025 | One time |
| 8090 Industries LLC | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| Denver Angels | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
| Buoyant Ventures Management, LLC | MCJ Venture Management | 1 | 1 | Nov 18, 2025 | One time |
| Activate Capital Partners | MCJ Venture Management | 1 | 1 | Sep 16, 2026 | One time |
Also named here, with no published line of their own (reach them through the firm): Thai Nguyen (General Partner), Courtney Flynn (Chief Financial Officer), Casey Goldstein (PORTFOLIO), Jason Jacobs (Founder And Managing Partner), Cody Simms (Managing Partner), David Aronoff (Chairman and Managing Partner), YIN Lu (General Partner), Justin Cody Simms (Managing Partner), David B Aronoff (Chairman And Managing Partner).
Who to call is the organisation, the person's role and the line they published themselves: a business phone, office address, website or profile link from Form ADV, Form 13F or their own website, with that source named on every value. The counts above are what a reveal returns; a personal email is rarely published, so most reveals are the firm's line. Never data bought from a provider, never anything personal. Reveals by plan