Key facts
- It has raised $114.5M; the latest was Secondary Transaction - Private in Jan 2025.
- Notable investors include Mitsubishi UFJ Capital, SMBC Venture Capital, SBI Investment, Celesta Capital, Japan Post Investment — 17 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 17 names
- ·Watchlist + deal alerts for Atonarp
- ·The full record, as it builds
Funding rounds
No funding rounds for Atonarp are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Atonarp
Manufacturer of a cloud-connected mass spectrometer intended to quantitatively analyze chemical processes in real-time. The company's spectrometer focuses on breakthroughs in miniaturization, artificial intelligence, vacuum science, and optics, enabling energy, pharmaceutical, petrochemical, and semiconductor industries to perform quantitative molecular analysis, diagnostics, and imaging efficiently.
- Sector
- Healthcare
- HQ
- Tokyo, Japan
- Founded
- 2009
- Employees
- 19
- Website
- atonarp.com/
- Ownership
- Privately Held (backing)
Atonarp 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 Atonarp 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 Atonarp in its N-PORT filings yet. We sweep new filings monthly.