Portal Space Systems
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
GeekWire and Greater Seattle Partners call for nominations for 2026 Uncommon Thinkers; deadline Sept. 18, winners honored Dec. 10
Nominations for GeekWire’s 2026 Uncommon Thinkers Awards — honoring Seattle-area inventors, scientists, technologists and entrepreneurs — close Friday, Sept. 18 at 11 a.m. PT; winners will be chosen by a judges panel and celebrated at the GeekWire Gala on Dec. 10. The fourth annual program, run with Greater Seattle Partners, seeks nominees who demonstrate innovation, leadership and measurable impact.
Portal Space Systems and Rebel Space develop onboard spectrum-monitoring for maneuverable satellites to detect RF interference
Portal Space Systems and Rebel Space are working to add onboard spectrum-monitoring technology to Portal’s maneuverable spacecraft so they can detect and characterize RF interference and electronic threats in orbit, rather than relying only on ground-based sensing. The collaboration could enable real-time attribution, geolocation and potential responses to jamming or suspicious electromagnetic activity for commercial and military satellites.
Portal Space Systems to Launch Starburst-1 in October; Developing 1,100‑lb Supernova with Solar Thermal Propulsion
Portal Space Systems is preparing to ship its first Starburst-1 satellite to Florida for an October launch on SpaceX’s Bandwagon-5 rideshare while advancing plans for a larger, 1,100-pound Supernova spacecraft that will use solar thermal propulsion for greater orbital maneuverability.
People
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Jeff Thornburg Founder, CEO & Co-founder
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Prashaanth Ravindran Founder, Co-founder, Director
