Argo Space Corp

Argo Space Corp, a small-business manufacturer of advanced spacecraft and propulsion systems based in El Segundo, California, operates as a prime contractor on Space Force and Missile Defense Agency research and development awards, with a focused portfolio in in-space logistics and orbital refueling technology development. The company competes under total small business set-asides on SBIR contracts and full-and-open competition on the SHIELD defense vehicle.

Argo's core capability centers on the design and development of refuelable, high delta-V spacecraft transfer stages and orbital propellant transfer systems. The company's flagship program is the Argonaut, a water-propelled in-space transport vehicle with dual-mode propulsion for contested logistics and responsive space operations. Recent representative work includes a $6.6 million Phase II SBIR contract awarded by the Air Force Research Laboratory on December 15, 2023, to mature the Argonaut's orbital refueling interfaces and spacecraft transfer stage capabilities for non-cryogenic propellants, with completion scheduled for December 31, 2026; a $150 thousand Phase I SBIR contract from the NASA Shared Services Center awarded August 3, 2023, for the Argonaut water-propelled spacecraft transfer stage; and a $75 thousand Phase I SBIR contract from Air Force Research Laboratory awarded December 14, 2023, for development of the Open Propellant Transfer Interface (OPTI) system enabling orbital refueling with non-cryogenic propellants. These awards represent continuation of the company's prior SBIR Phase I and Phase II funding totaling over $1.9 million.

Customer concentration reflects Argo's focus on Air Force innovation pipelines. The Air Force Research Laboratory accounts for two awards and $6.7 million in combined potential value across the recent portfolio. The Missile Defense Agency holds a $151 billion multiple-award IDIQ contract (the Scalable Homeland Innovative Enterprise Layered Defense, or SHIELD, vehicle) awarded December 29, 2025, though an initial task order carries only $500 in delivery value. Within the next twenty-four months, one award—the $6.6 million Phase II SBIR contract—reaches ultimate completion and faces recompete. Argo operates exclusively as a prime contractor with no subcontract footprint in the source data. All five awards fall under NAICS 541712 (Research and Development in Physical, Engineering, and Life Sciences).