Key facts
- Ion Storage Systems’s last known valuation is $170.0M (Jul 2024).
- It has raised $59.0M; the latest was Later Stage VC ($1.0M) in Dec 2025.
- Notable investors include Alumni Ventures, Climate Capital, U.S. Department of Energy, TEDCO, Toyota Ventures — 25 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 25 names
- ·Watchlist + deal alerts for Ion Storage Systems
- ·The full record, as it builds
Funding rounds
No funding rounds for Ion Storage Systems are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Ion Storage Systems
Developer of a solid-state battery platform designed to overcome the limitations of conventional lithium-ion technology. The company offers an inherently safe, durable architecture with high performance and reliability, enabling consumer electronics and electric vehicles to operate with improved safety and long-term dependability.
- Sector
- Energy
- HQ
- Beltsville, MD, United States
- Founded
- 2017
- Employees
- 54
- Website
- ionstoragesystems.com/
- Ownership
- Privately Held (backing)
Ion Storage Systems 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 Ion Storage Systems 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 Ion Storage Systems in its N-PORT filings yet. We sweep new filings monthly.