Key facts
- Coolbrook’s last known valuation is $134.4M (Dec 2022).
- It has raised $56.9M; the latest was Later Stage VC ($8.3M) in Jul 2025.
- Notable investors include Butterfly Ventures, Corporatum, Korkia, TIETOKLUSTERI OY.
- Status: Privately Held (backing).
- ·The complete investor list — 4 names
- ·Watchlist + deal alerts for Coolbrook
- ·The full record, as it builds
Funding rounds
No funding rounds for Coolbrook are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Coolbrook
Manufacturer of industrial electrification and process heating systems intended for use in heavy industries with high-temperature requirements. The company system applies patented rotating machinery to deliver high-temperature electric process heating and hydrocarbon cracking, integrates components such as RotoDynamic Heater and RotoDynamic Reactor units for use in cement, steel, petrochemicals, and chemicals production, enabling industrial producers to replace fossil-fuel-based furnaces, lower process emissions, and reduce the carbon intensity of core materials production ata commercial scale.
- Sector
- Energy
- HQ
- Helsinki, Finland
- Founded
- 2011
- Employees
- 35
- Website
- coolbrook.com/
- Ownership
- Privately Held (backing)
Coolbrook 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 Coolbrook 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 Coolbrook in its N-PORT filings yet. We sweep new filings monthly.