Key facts
- It has raised $1.6M; the latest was Early Stage VC ($1.6M) in Mar 2026.
- Notable investors include Dorm Room Fund, Champion Hill Ventures, Maple VC.
- Status: Privately Held (backing).
- ·The complete investor list — 3 names
- ·Watchlist + deal alerts for Sonibel Instruments
- ·The full record, as it builds
Funding rounds
No funding rounds for Sonibel Instruments are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Sonibel Instruments
Developer of AI-powered welding quality control systems designed to reduce costly weld repairs, minimize inspection delays and keep fabrication projects on schedule. The company offers a real-time weld defect detection service that uses acoustic sensing and machine learning to identify porosity and fusion issues during welding, enabling customers to cut repair costs, pass inspections the first time and accelerate project timelines with consistent weld quality.
- Sector
- Business Products and Services (B2B)
- HQ
- San Francisco, CA, United States
- Founded
- 2025
- Website
- sonibelinstruments.com/
- Ownership
- Privately Held (backing)
Sonibel Instruments 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 Sonibel Instruments 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 Sonibel Instruments in its N-PORT filings yet. We sweep new filings monthly.