Capture6 key facts
as of Oct 2026- Developer of a carbon dioxide removal technology designed to reduce emissions of climate gases.
- Capture6 is valued at approximately $117.5M as of Oct 2026 (last reported valuation).
- It has raised $34.4M across 1 recorded rounds; the latest was Debt ($6.8M) in Mar 2022.
- Notable investors include Greentown Labs, Third Derivative, Elemental Impact, Urban Future Lab, Creative HQ — 17 tracked in total.
- Capture6 has filed 2 Form Ds with the SEC, most recently Oct 2023 ($6.8M sold to 45 investors).
- Status: Privately Held (backing).
Capture6's last reported valuation, Mar 2025. Nothing priced has surfaced since.
- ·The complete investor list: 17 names
- ·Watch Capture6: the Monday email on marks, rounds and moves
Capture6 funding rounds
1 roundsWho backs Capture6
17+Capture6 valuation
Capture6's last reported valuation was $118 million in Mar 2025. No priced round, secondary trade or fund mark has surfaced since.
How much has Capture6 raised?
Capture6 has raised $34.4 million in total; 1 of its rounds is on record. The largest on record was a $6.8 million debt round in Mar 2022.
Capture6 has filed 2 Form Ds with the SEC, most recently in Oct 2023 ($6.8 million sold to 45 investors).
Capture6 investors
17 investors are on record for Capture6, including Greentown Labs, Third Derivative, Elemental Impact and Urban Future Lab. The debt round in Mar 2022 drew 45 investors.
About Capture6
Developer of a carbon dioxide removal technology designed to reduce emissions of climate gases. The company's technology uses electrochemistry to convert seawater into an alternative that pulls carbon dioxide from the air and deposits it into the ocean with an ancillary benefit to ocean health, enabling businesses, governments, and communities to decarbonize operations through integrated direct air capture approaches.
- Sector
- Energy
- HQ
- San Francisco, CA, United States
- Founded
- 2022
- Employees
- 28
- Website
- capture6.org/
- Ownership
- Privately Held (backing)
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