Key facts
- Spar Systems’s last known valuation is $8.8M (Dec 2024).
- It has raised $1.1M across 2 recorded rounds; the latest was Seed Round ($545K) in Dec 2024.
- Notable investors include Deep Future, Cleantech Open.
- Spar Systems has filed 4 Form Ds with the SEC since 2022, most recently Dec 2025 ($545K sold to 10 investors).
- Status: Privately Held (backing).
Investors
2- ·Post-money valuations for all 2 rounds
- ·The complete investor list — 2 names
- ·Watchlist + deal alerts for Spar Systems
Funding rounds
2 roundsAbout Spar Systems
Manufacturer of thermal energy conversion technology intended to generate electricity from ultra-low temperature heat. The company's platform offers modular systems that integrate with existing cooling loops and thermal infrastructure to convert low-grade heat into onsite electricity, enabling data centers, hyperscale computing operators, and industrial facilities to produce additional power without new grid connections or additional fuel consumption.
- Sector
- Energy
- HQ
- Montvale, NJ, United States
- Employees
- 5
- Website
- sparsystems.com/
- Ownership
- Privately Held (backing)
Spar 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 Spar 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 Spar Systems in its N-PORT filings yet. We sweep new filings monthly.