Portal Space Systems
Portal Space Systems is an aerospace company based in Bothell, Washington, that develops spacecraft platforms such as Starburst and...
Facts
- HQ
- Seattle area, USA
- Sectors
- Defense and Space Manufacturing
- Founded
- 2021
- Employees
- 51
- Stage
- startup
- Total raised
- $61.5M SEC Form D filings Total of this company's SEC Form D filings
- Last round
- $61.5M · Mar 2026 SEC Form D
- Founders
- Jeff Thornburg, Prashaanth Ravindran, Ian Vorbach
Uncommon Thinkers 2025: Solar spacecraft, sci-fi biology, destroying PFAS, beyond AI chatbots, and better social media
On this special episode of the GeekWire Podcast, recorded backstage at the GeekWire Gala at the Showbox Sodo, we sit down with five of the inventors, scientists, and entrepreneurs selected as the Seattle region's 2025 Uncommon Thinkers, in partnership with Greater Seattle Partners. Jeff Thornburg spent years building rocket engines for Elon Musk at SpaceX and Paul Allen at Stratolaunch. Now, as CEO of Portal Space Systems, he's moved past chemical rockets to revive a concept NASA studied decades ago but never pursued — a spacecraft powered by focused sunlight. He calls it a "steam engine for space." Read the…
People
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Jeff Thornburg Founder, CEO & Co-founder
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Prashaanth Ravindran Founder, Co-founder, Director
