Key facts
- It has raised $6.6M; the latest was Accelerator/Incubator in Apr 2026.
- Notable investors include Bpifrance, BNP Paribas Développement, Leonard (Innovation Platform), BigBooster, Business Angels 35 — 6 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 6 names
- ·Watchlist + deal alerts for Ostrea
- ·The full record, as it builds
Funding rounds
No funding rounds for Ostrea are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Ostrea
Manufacturer of a marine bio-sourced eco-material intended to provide materials based on recycled shell waste. The company collects and processes shell waste, converts it into mineral-based composites through crushing and formulation techniques, allows production of customizable panels and surfaces, and integrates low-carbon manufacturing processes, enabling construction, design, and industrial markets to access recyclable materials with reduced environmental impact and improved resource utilization.
- Sector
- Materials and Resources
- HQ
- Rennes, France
- Founded
- 2020
- Employees
- 21
- Website
- ostrea.fr/
- Ownership
- Privately Held (backing)
Ostrea 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 Ostrea 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 Ostrea in its N-PORT filings yet. We sweep new filings monthly.