Portal Space Systems Stock
| Valuation | $250M1 |
| Valuation Date | Apr 9, 2026 |
| Implied Valuation | n/a |
| Last Price | n/a |
| 52-Week High | n/a |
| 52-Week Low | n/a |
| YTD Return | n/a |
| 1-Year Return | n/a |
| 3-Year Return | n/a |
| Total Funding | $67.5M1 |
| Latest Round Amount | $50M2 |
| Latest Round | Series A |
| Funding Rounds | 2 |
| IPO Status | Unknown |
| Expected IPO Date | n/a |
| Revenue | n/a |
| Revenue Type | n/a |
| P/S Ratio | n/a |
About Portal Space Systems
Portal Space Systems is a spacecraft company that builds rapidly maneuverable vehicles for defense, civil and commercial missions. Its flagship Supernova platform uses solar thermal propulsion to heat a storable propellant with concentrated sunlight. That gives the vehicle enough delta-v to move from low Earth orbit to cislunar space. The company also makes Starburst, a smaller ESPA-class bus for rapid maneuvering within a single orbital regime. Portal makes money by selling spacecraft and in-space mobility missions to government and commercial customers. It was founded in 2021 by former SpaceX propulsion executive Jeff Thornburg along with Ian Vorbach and Prashaanth Ravindran.
Invest in Portal Space Systems
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News
Portal Space Systems Prepares Starburst Launch From Cape Canaveral
Portal shipped its 600-pound Starburst prototype to Florida for an October Falcon 9 rideshare launch that will demonstrate in-orbit maneuverability.
Portal Books Dedicated Falcon 9 Amid Constrained Launch Market
CEO Jeff Thornburg said Portal purchased an entire SpaceX Falcon 9 for its Motus Via Sol 2028 mission carrying the first Supernova bus, while Starburst-1 was set to launch on Bandwagon-5.
Maverick Books 10 Kepler Sats to Fill Excess Capacity On Portal's Dedicated Launch
Maverick Space Systems secured launch capacity for 10 Kepler Communications Tranche-2 satellites aboard Portal's Motus Via Sol Falcon 9 mission, expected in mid-2028.
Portal Space Books Entire Falcon 9 Launch for Supernova
Portal booked a dedicated SpaceX Falcon 9 mission in 2028 for its first Supernova solar-thermal spacecraft and partnered with Maverick Space Systems to sell spare rideshare capacity.
Portal Space Systems Signs Contract with SpaceX for Falcon 9 Launch in 2028
Portal booked a Falcon 9 launch with SpaceX for its Motus Via Sol mission in 2028, which is slated to fly the first Supernova spacecraft and debut the company's FLARE solar thermal propulsion system. ...
Portal Space taps Quindar for ground mission support of its maneuvering spacecraft
Quindar agreed to provide mission planning and ground operations support for Portal's Starburst and Supernova spacecraft, starting with Starburst-1 on SpaceX's Transporter-18.
This founder helped build SpaceX's most powerful rocket engine. Now he's building a 'fighter jet for orbit.'
Portal Space Systems raised a $50 million Series A at a $250 million valuation, led by Geodesic Capital and Mach33, to commercialize solar thermal propulsion. TechCrunch reported $67.5 million in priv...
Portal Space Systems raises $50 million to accelerate spacecraft development
SpaceNews reported Portal's $50 million raise to scale development of its highly maneuverable Supernova vehicle and Starburst spacecraft bus.
Portal Space Systems Raises $50 Million Series A to Advance Rapidly Maneuverable Spacecraft Capabilities
The company said Geodesic Capital and Mach33 led the Series A, with Booz Allen Ventures, ARK Invest, AlleyCorp and FUSE participating. Proceeds will fund Starburst and Supernova missions plus a Bothel...
Portal Space's 'Mini-Nova' payload goes into orbit to test technologies for maneuverable space vehicles
Portal's Mini-Nova avionics payload launched March 30, 2026 on SpaceX Transporter-16 aboard Momentus Vigoride-7 to test flight computers and power systems for Starburst and Supernova.
Portal Space Systems and Paladin Space Launch First Commercially Structured Debris Removal Infrastructure; Starlab Joins as Early Partner
Portal and Paladin announced Debris Removal as a Service, pairing Starburst with Paladin's Triton capture payload. Starlab signed a letter of intent; first missions are targeted for 2027.
Washington State Invests $350,000 in Portal Space Systems Through Strategic Reserve Fund to Accelerate Manufacturing in Bothell
Washington's Department of Commerce awarded $350,000 from the Governor's Strategic Reserve Fund to support Portal's Bothell manufacturing expansion and planned hiring.
Portal Space Systems announces highly maneuverable satellite bus
Portal unveiled Starburst, an ESPA-class bus with about 1 km/s of delta-v, and said Starburst-1 would fly on SpaceX Transporter-18 in late 2026.
Portal unveils Starburst, an ESPA-class rapid-maneuverability spacecraft, and announces Starburst-1 mission on SpaceX in Q4 2026
The company introduced Starburst as a compact maneuverable bus sharing systems with Supernova, with a one-year sun-synchronous demo hosting TRL11 and Zenno payloads.
Portal Becomes First Commercial Company to Successfully Test Solar Thermal Propulsion System for Multi-Orbit Spacecraft
Portal said it completed a vacuum-chamber test of its 3D-printed Flare HEX thruster at operational temperatures, using storable ammonia as the propellant.
Portal Space Systems Expands Manufacturing Footprint with New 50,000 Sq. Ft. Facility in Bothell, WA
At the Paris Air Show, Portal announced a second Bothell site for spacecraft manufacturing, targeting one Supernova per month by 2027 and more than 100 new jobs.
Momentus to Host Portal Space Systems' Inaugural On-orbit Demonstration Mission
SAN JOSE, Calif.--(BUSINESS WIRE)--Momentus Inc. (NASDAQ: MNTS) ("Momentus" or the "Company"), a leading U.S. commercial space firm specializing in satellite solutions, in-space transportation, and or...
Portal Space Systems raises $17.5 million for highly maneuverable Supernova spacecraft
SpaceNews reported Portal's oversubscribed $17.5 million seed round to develop and demonstrate its solar-thermal Supernova spacecraft.
Portal Space Systems Raises $17.5M in Oversubscribed Seed Round to Build Multi-Role, Trans-Orbital Spacecraft Powered by Solar Thermal Propulsion
AlleyCorp led the seed, with Mach33, FUSE, First In, TFX, Offline Ventures and Atypical participating, to fund the first full-scale Supernova demonstration.
Portal Space Systems is Awarded a $45 Million Strategic Funding Increase (STRATFI) at Fed Supernova 2024
SpaceWERX selected Portal for a $45 million STRATFI award to build and demonstrate the first Supernova vehicle and scale production.
Portal Space Systems unveils Supernova, an ultra-mobile spacecraft
Portal came out of stealth with its 500-kg solar-thermal Supernova bus, targeting 6 km/s of delta-v for rapid transfers from low Earth orbit toward geostationary and cislunar space.