Key facts
- It has raised $32.1M across 3 recorded rounds; the latest was Early Stage VC ($29.4M) in Jun 2024.
- Notable investors include Alumni Ventures, US National Science Foundation, SOSV, Greentown Labs, Third Derivative — 21 tracked in total.
- Mantel Capture has filed 3 Form Ds with the SEC since 2022, most recently Sep 2024 ($29.4M sold to 13 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 3 rounds
- ·The complete investor list — 21 names
- ·Watchlist + deal alerts for Mantel Capture
Funding rounds
3 roundsAbout Mantel Capture
Developer of a carbon capture technology designed to capture carbon dioxide from high-temperature industrial processes with minimal energy loss. The company's technology operates inside boilers, kilns, and furnaces using liquid-phase, molten salt chemistry to capture CO₂ while recovering useful heat, enabling industrial sectors such as cement, steel, and chemicals to reduce the cost and energy penalty of carbon capture and lower overall emissions.
- Sector
- Energy
- HQ
- Cambridge, MA, United States
- Founded
- 2022
- Employees
- 35
- Website
- mantelcapture.com/
- Ownership
- Privately Held (backing)
Mantel Capture doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Mantel Capture shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Mantel Capture in its N-PORT filings yet. We sweep new filings monthly.