Key facts
- It has raised $20.0M; the latest was Early Stage VC ($12.5M) in Sep 2025.
- Notable investors include Alumni Ventures, Abstract Ventures, Village Global, Future Ventures (San Francisco), ACME Capital — 9 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 9 names
- ·Watchlist + deal alerts for Sphere Semi
- ·The full record, as it builds
Funding rounds
No funding rounds for Sphere Semi are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Sphere Semi
Producer of artificial intelligence-designed analog chips, intended to make customized analog chips accessible to all. The company offers artificial intelligence-designed semiconductors and a service to fabricate them to custom specifications, enabling customers to fabricate to custom specs and deliver chips ready for integration.
- Sector
- Information Technology
- HQ
- Palo Alto, CA, United States
- Founded
- 2024
- Employees
- 9
- Website
- spheresemi.com/
- Ownership
- Privately Held (backing)
Sphere Semi 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 Sphere Semi 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 Sphere Semi in its N-PORT filings yet. We sweep new filings monthly.