Key facts
- It has raised $450.0M across 1 recorded rounds; the latest was Early Stage VC (Series A) ($450.0M) in Feb 2026.
- Notable investors include Bessemer Venture Partners, GV, Quiet Capital, WndrCo, Long Journey Ventures — 10 tracked in total.
- Status: Privately Held (backing).
- ·Post-money valuations for all 1 rounds
- ·The complete investor list — 10 names
- ·Watchlist + deal alerts for Inertia
Funding rounds
1 roundsAbout Inertia
Developer of laser-based fusion energy systems designed to enable grid-scale clean power generation through mass-manufactured fusion fuel and advanced laser technology. The company develops commercial fusion energy infrastructure centered on high-power laser systems, scalable fuel target manufacturing, and power plant architectures, enabling clients to produce grid-scale clean electricity through laser-based fusion energy systems.
- Industry
- Energy Production
- Sector
- Energy
- HQ
- San Francisco, CA, United States
- Founded
- 2024
- Employees
- 15
- Website
- inertia.com/
- Ownership
- Privately Held (backing)
Inertia 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 Inertia 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 Inertia in its N-PORT filings yet. We sweep new filings monthly.