Key facts
- Spaceium’s last known valuation is $40.0M (Jan 2025).
- It has raised $5.5M; the latest was Seed Round ($5.0M) in Jan 2025.
- Notable investors include Y Combinator, Alumni Ventures, Andreessen Horowitz, Gaingels, Calm Ventures — 20 tracked in total.
- Status: Privately Held (backing).
- ·The complete investor list — 20 names
- ·Watchlist + deal alerts for Spaceium
- ·The full record, as it builds
Funding rounds
No funding rounds for Spaceium are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
About Spaceium
Developer of a spacecraft docking system designed to conquer the challenges and expense of transporting, accessing, and refueling in space. The company's docking mechanism offers services in the fields of In-space refueling with sustainable fueling stations that can be an essential part of space exploration, enabling clients to reach further destinations and travel longer distances, reducing the cost of space missions, and eliminating the launch of spacecraft.
- Sector
- Business Products and Services (B2B)
- HQ
- Long Beach, CA, United States
- Founded
- 2023
- Employees
- 5
- Website
- spaceium.com/
- Ownership
- Privately Held (backing)
Spaceium 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 Spaceium 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 Spaceium in its N-PORT filings yet. We sweep new filings monthly.