Key facts
- Chestnut Biopolymers’s last known valuation is $4.0M (Dec 2025).
- It has raised $1.3M; the latest was Seed Round ($660K) in Dec 2025.
- Status: Privately Held (backing).
- ·Watchlist + deal alerts for Chestnut Biopolymers
- ·The full record, as it builds
Funding rounds
No funding rounds for Chestnut Biopolymers are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Chestnut Biopolymers
Manufacturer of biodegradable plant-based polymers intended to replace fossil-based plastics. The company's platform develops and supplies bespoke polymer formulations that biodegrade into biomass, water, and CO₂, enabling industries to adopt sustainable plastics without requiring new manufacturing equipment.
- Sector
- Business Products and Services (B2B)
- HQ
- Darlington, United Kingdom
- Founded
- 2019
- Employees
- 9
- Website
- chestnut.bio/
- Ownership
- Privately Held (backing)
Chestnut Biopolymers 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 Chestnut Biopolymers 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 Chestnut Biopolymers in its N-PORT filings yet. We sweep new filings monthly.