Key facts
- It has raised $12.8M; the latest was Later Stage VC ($6.0M) in Apr 2026.
- Notable investors include Seraphim Space, National Aeronautics and Space Administration, Ligo Partners, The Catalyst Accelerator, New Mexico Vintage Fund — 17 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 17 names
- ·Watchlist + deal alerts for Rhea Space Activity
- ·The full record, as it builds
Funding rounds
No funding rounds for Rhea Space Activity are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Rhea Space Activity
Developer of astrophysics technology designed to support national security objectives. The company develops a range of technologies across infrared satellites, directed energy, artificial intelligence, astroparticle physics, small satellites, autonomous underwater vehicles, and more, enabling governments and defense forces to fulfill their security objectives.
- Sector
- Business Products and Services (B2B)
- HQ
- Washington, DC, United States
- Founded
- 2018
- Employees
- 21
- Website
- rheaspaceactivity.com/
- Ownership
- Privately Held (backing)
Rhea Space Activity 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 Rhea Space Activity 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 Rhea Space Activity in its N-PORT filings yet. We sweep new filings monthly.