Funding round
Chestnut Carbon Series B
Chestnut Carbon, which works in nature-based carbon offset project development in New York, raised $250M in a Series B round announced on 16 Sep 2025. 1 firm took part, 1 of them already investors. It is Chestnut Carbon's second venture round on record; the one before was a Seed in Mar 2022.
$250M
Amount raised
Not disclosed
Post-money valuation
1
Investors
no lead named
Valuation
What this round says about the price
Chestnut Carbon did not disclose a valuation in this round. It came 42 months after Chestnut Carbon's Seed. It is 56% of the $450M Chestnut Carbon has raised in the venture rounds on record. No later venture round is on record for Chestnut Carbon.
Chestnut Carbon's funding rounds
Chestnut Carbon has 2 venture rounds on record. This one is highlighted.
- Seed 18 Mar 2022, led by Kimmeridge $200M
- Series B this round 16 Sep 2025 $250M
Investors
Who put money in
1 firm took part; no lead investor was named.
Investors
- Canada Pension Plan Investment Board existing investor
Use of proceeds
What the money is for
According to the announcement, the money goes to scaling operations.
- Scaling operations
Comparable rounds
How it compares
The closest in time, other companies' Series B rounds in Environmental Engineering Services:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Environmental Engineering Services | 4 Sep 2025 | $13M | not disclosed | Nasdaq |
| Environmental Engineering Services | 3 Feb 2026 | $20M | not disclosed | WestBridge Capital |
| Environmental Engineering Services | 3 Sep 2024 | $17M | not disclosed | Trill Impact |
Sources
Where this comes from
Reported by 2 sources.
Questions
Frequently asked
How much did Chestnut Carbon raise in its Series B round?
Chestnut Carbon raised $250M in its Series B round, announced in Sep 2025.
Which investors took part in Chestnut Carbon's Series B round?
Canada Pension Plan Investment Board.
What was Chestnut Carbon's valuation at the Series B round?
It was not disclosed.