Key facts
- It has raised $10K; the latest was Seed Round in Nov 2025.
- Notable investors include INDEE Capital, MIT Venture Forum Japan.
- Status: Privately Held (backing).
Investors
2- ·The complete investor list — 2 names
- ·Watchlist + deal alerts for Heat Flux
- ·The full record, as it builds
Funding rounds
No funding rounds for Heat Flux are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Heat Flux
Developer of a thin-film heating technology designed to deliver efficient, flexible, and precisely controlled heat transfer. The company offers an ultra-thin energy-saving heater with smartphone-based temperature control, customizable heat settings, and broad applicability across consumer, industrial, and infrastructure uses, enabling manufacturers and system developers to integrate reliable, low-power heating into diverse products and environments.
- Sector
- Business Products and Services (B2B)
- HQ
- Tokyo, Japan
- Founded
- 1982
- Website
- heatflux.jp/
- Ownership
- Privately Held (backing)
Heat Flux 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 Heat Flux 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 Heat Flux in its N-PORT filings yet. We sweep new filings monthly.