Key facts
- Adden Energy’s last known valuation is $45.0M.
- It has raised $20.1M across 2 recorded rounds; the latest was Early Stage VC ($15.0M) in Aug 2024.
- Notable investors include US National Science Foundation, MassVentures, At One Ventures, Harvard University, Primavera Capital Group — 7 tracked in total.
- Adden Energy has filed 2 Form Ds with the SEC since 2022, most recently Sep 2024 ($15.0M sold to 4 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 2 rounds
- ·The complete investor list — 7 names
- ·Watchlist + deal alerts for Adden Energy
Funding rounds
2 roundsAbout Adden Energy
Developer a solid-state battery to demonstrate charge times and capacity retention over long cycles. The company offers the development of new next-generation battery technologies to enable mass adoption providing electric vehicles around the world with sustainable batteries and contributing greatly to a cleaner future, enabling customers to store energy more efficiently and reduce their reliance on fossil fuels.
- Sector
- Business Products and Services (B2B)
- HQ
- Waltham, MA, United States
- Founded
- 2021
- Employees
- 8
- Website
- addenenergy.com/
- Ownership
- Privately Held (backing)
Adden Energy 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 Adden Energy 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 Adden Energy in its N-PORT filings yet. We sweep new filings monthly.