United States · 
Who invested in RenewCO2?
RenewCO2's investors include National Science Foundation, MassChallenge, US Department of Energy and Cleantech Open.
2026
$2.0MSeed$4.2MSeed$9.3MRoundUnited States · Seed startup
Who invested in RenewCO2
3 rounds we have observed, with the 4 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 1 month ago
Funding summaryUpdated 26 Oct 2026
$15Mraised across 3 rounds since 2025, from 3 sources
$2.0MSeed$4.2MSeed$9.3MRound
- Latest round
- Round, $9.3MSept 2026
- Step-upi
- 2.2×
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $2.0M Aug 2025
- Biggest round
- $9.3M Round · Sept 2026
- Between rounds
- 14 months from the last two
The rounds
- Sept 2026Round$9.3M
No investor was named in the report.
Filed with the SEC (Form D); no report of this raise yetSEC filing: $9.3M sold, first sale Sept 2026
- Aug 2025Seed$2.0M4 new
Source recordedSEC filing: $4.2M sold, first sale Aug 2025
- Aug 2025Seed$4.2M4 returning
Source recordedSEC filing: $4.2M sold, first sale Aug 2025
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Seed2025Seed2025Round2026
National Science Foundation
MassChallenge
US Department of Energy
Cleantech Open
National Science FoundationMassChallengeUS Department of EnergyEveryone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
This firm lists RenewCO2 as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about RenewCO2
How much has RenewCO2 raised?
RenewCO2 has raised $15M across 3 rounds since 2025.
When did RenewCO2 last raise?
RenewCO2's most recent round, $9.3M, was in Sept 2026.
What was RenewCO2's biggest round?
Its most recent round, $9.3M in Sept 2026, is also its largest on record.
Who backed RenewCO2 first?
RenewCO2's first round on record, in Aug 2025, was backed by National Science Foundation, MassChallenge and US Department of Energy and 1 others.
What stage is RenewCO2 at?
RenewCO2's latest named round is a Seed, in Aug 2025.
Where is RenewCO2 based?
RenewCO2 is based in the United States.
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