United States · 
Who invested in Portal Space Systems?
Portal Space Systems's investors include Y Combinator, AlleyCorp, FUSE and Geodesic Capital.
2026
$18MSeed$50MSeries A
United States · Series A startup
Who invested in Portal Space Systems
Funding summaryUpdated 26 Oct 2026
$68Mraised across 2 rounds since 2025, from 2 sources
$18MSeed$50MSeries A
- Latest round
- Series A, $50MApr 2026
- Step-upi
- 2.9×
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $18M Apr 2025
- Biggest round
- $50M Series A · Apr 2026
- Between rounds
- 12 months from the last two
The rounds
- Apr 2026Series A$50M1 new3 returning
Source recordedSEC filing: $61M sold
- Apr 2025
Founders and team
From Portal Space Systems's own website: 7 on the team.
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Portal Space Systems
How much has Portal Space Systems raised?
Portal Space Systems has raised $68M across 2 rounds since 2025.
When did Portal Space Systems last raise?
Portal Space Systems's most recent round was a Series A of $50M in Apr 2026.
What was Portal Space Systems's biggest round?
Its most recent round, $50M in Apr 2026, is also its largest on record.
Who backed Portal Space Systems first?
Portal Space Systems's first round on record, in Apr 2025, was backed by Y Combinator, AlleyCorp and FUSE.
What stage is Portal Space Systems at?
Portal Space Systems's latest named round is a Series A, in Apr 2026.
Where is Portal Space Systems based?
Portal Space Systems is based in the United States.
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