Key facts
- Sion Power’s last known valuation is $435.0M (Jan 2024).
- It has raised $144.5M across 2 recorded rounds; the latest was Early Stage VC ($20.0M) in Nov 2021.
- Notable investors include U.S. Department of Energy, United States Department of War, National Aeronautics and Space Administration, LG Technology Ventures, GM Ventures — 11 tracked in total.
- Sion Power has filed 4 Form Ds with the SEC since 2011, most recently Nov 2021 ($20.0M sold to 5 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 2 rounds
- ·The complete investor list — 11 names
- ·Watchlist + deal alerts for Sion Power
Funding rounds
2 roundsAbout Sion Power
Developer of energy storage systems designed to address the future needs of the electric vehicle and aerospace markets today. The company's systems double the energy density of Li-Ion and advance lithium metal protection, enabling users to use compact and lightweight batteries that enhance the energy and cycle life of rechargeable lithium-metal batteries.
- Sector
- Business Products and Services (B2B)
- HQ
- Tucson, AZ, United States
- Founded
- 1989
- Employees
- 89
- Website
- sionpower.com/
- Ownership
- Privately Held (backing)
Sion Power 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 Sion Power 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 Sion Power in its N-PORT filings yet. We sweep new filings monthly.