ARGO SPACE CORP

El Segundo, CA · Aerospace · Private

Argonaut: a reusable small spacecraft transfer vehicle powered by a water-fed microwave electrothermal thruster for in-space payload capture and transportation

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Updated Oct 23, 2026 · argospace.com

Sector: Aerospace
Headquarters: El Segundo, CA
Total capital: $6.5M

Federal grants: $1.9M; 3 awards · 2023; Rank in peer group#12 of 91
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $4.6M; 3 awards · Defense; Rank in Aerospace#350 of 1335
Granted patents: 0; 1 pending

Capital timeline

Latest events

Dec 2025Federal contractDefense · Scalable Homeland Innovative Enterprise Layered Defense (shield) Initial Order.$500
Dec 2023Federal contractDefense · Developing Argonaut, A Refuellable, High-deltav In-space Transport Vehicle With A Dual Mode Propulsion System Using Water Propellant.$4.5M
Dec 2023Federal grantDefense · Phase I · SBIR Phase I Proposal FX237-PCSO1-1262 - Open Propellant Transfer Interface (opti) For Orbital Refueling With Non-cryogenic Propellants$75K
Dec 2023Federal grantDefense · Phase II · Developing Argonaut, A Refuellable, High-deltav In-space Transport Vehicle With A Dual Mode Propulsion System Using Water Propellant.$1.7M
Dec 2023Federal contractDefense · SBIR Phase I Proposal FX237-PCSO1-1262 - Open Propellant Transfer Interface (opti) For Orbital Refueling With Non-cryogenic Propellants$75K
Jul 2023Federal grantNASA · Phase I · The Argonaut: Water-Propelled Reusable High DeltaV Spacecraft Transfer Stage$150K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Standing among 91 peers

Line = median

Aerospace · Orbital_ops · Device

Federal grants#12 · top 13%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

No founders are linked to this company yet.

Founders appear once a person is matched to the company through its own patents, grants or filings. We never infer people from social profiles.

Checked: USPTO inventors; federal award principal investigators; SEC Form D related persons · Oct 23, 2026

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What it has protected

USPTO · 0 granted of 1

Aug 28, 2025PendingLunar Water ExtractorUSPTOApplication 18588725

PLUS DESIGNS INCSimilar federal contract value in Aerospace · $4.7M in contracts
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Espace IncSimilar federal contract value in Aerospace · $4.6M in contracts
ADVANCED OPTICAL TECHNOLOGIES INCSimilar federal contract value in Aerospace · $4.5M in contracts
BALCONES TECHNOLOGIES LLCSimilar federal contract value in Aerospace · $4.5M in contracts
RELATIVE DYNAMICS INCSimilar federal contract value in Aerospace · $4.5M in contracts

Regulatory activity · Aerospace

Sector-level, not company-level

06 Jul 2026Nondiscrimination in Federally Assisted Programs of NASA-Effectuation of Title VI of the Civil Rights Act of 1964National Aeronautics and Space Administration
01 Jul 2026Special Conditions: AMAC Aerospace, The Boeing Company Model 747- 8 Airplane; Side-Facing SeatsFederal Aviation Administration
26 Jun 2026Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous AmendmentsFederal Aviation Administration
23 Jun 2026Operating Limitations at John F. Kennedy International AirportFederal Aviation Administration
23 Jun 2026Operating Limitations at New York LaGuardia AirportFederal Aviation Administration
18 Jun 2026Special Conditions: Honeywell Aerospace US LLC, Dassault Aviation Model Falcon 900EX Airplane; Electronic System Security Protection From Unauthorized External AccessFederal Aviation Administration

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.