Portal Space Systems

📍 Bothell, United States🗓 Founded 2021👥 33 employees💰 Last funded Apr 2026
Defense and Space Manufacturing🌐 portalsystems.space
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Portal Space Systems is a Seattle-based space start-up solving the need for mobility in space. Our flagship product, the Supernova satellite bus, is engineered for rapid and long-range in-space maneuverability. Our payload-agnostic, 500 kg spacecraft features a novel solar-thermal propulsion system, which enables an ultra-high delta-v, a 50X improvement over existing products on the market. The company was founded in 2021 by industry leader Jeff Thornburg, alongside COO Ian Vorbach and VP of Engineering Prashaanth Ravindran. We are on a mission to empower the next generation of space operators to maintain space superiority.
7
Total investors
0
Early stage
7
Mid stage
0
Late stage
2021
Founded

Investors

7 investors
All
Early stage
Mid stage
Late stage
Investor geography2 countries
United States
6
Canada
1
Investor activity2025–2026 · investors recorded per year
2025420263
Recent (last 2y)Earlier
Frequently asked questions
Who invested in Portal Space Systems?
Portal Space Systems has 7 investors on record on gritt.io, 7 mid-stage.
When did Portal Space Systems last raise funding?
The most recent investment in Portal Space Systems recorded on gritt.io was in April 2026.
When was Portal Space Systems founded?
Portal Space Systems was founded in 2021.
What industry is Portal Space Systems in?
Portal Space Systems operates in Defense and Space Manufacturing. Find similar Defense and Space Manufacturing investors on gritt.io.
Where is Portal Space Systems based?
Portal Space Systems is headquartered in Bothell, United States.