Key facts
- Notable investors include Michael Seibel, Cisco Foundation, Equable Capital, Andrew Carton, Artem Mikhlin — 25 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 25 names
- ·Watchlist + deal alerts for Third Sphere
- ·The full record, as it builds
Funding rounds
No funding rounds for Third Sphere are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Third Sphere
Provider of seed-stage and early-stage funding services intended to invest in startups upgrading cities for climate by reducing greenhouse gases, increasing resilience, and improving density. The company's services include investments in city sectors such as transportation, real estate, and energy, which are central to decarbonization and resilience, enabling technology startups to secure financial support to grow.
- Sector
- Financial Services
- HQ
- New York, NY, United States
- Employees
- 22
- Website
- thirdsphere.com/
- Ownership
- Privately Held (backing)
Third Sphere 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 Third Sphere 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 Third Sphere in its N-PORT filings yet. We sweep new filings monthly.