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Two Virginia-based companies operating satellite constellations that collect radio frequency data from space, but with fundamentally different missions. Spire is a multi-purpose data platform (weather, maritime, aviation), while HawkEye 360 specializes in RF geolocation and signal intelligence for defense and intelligence customers.
| Metric | Spire Global | HawkEye 360 |
|---|---|---|
| Founded | 2012 | 2015 |
| Headquarters | Vienna, VA (moved from San Francisco) | Herndon, VA |
| CEO | Theresa Condor (since Jan 2025; founder Peter Platzer now Exec Chairman) | John Serafini |
| Public / Private | Public (NYSE: SPIR, via SPAC 2021) | Public (Nasdaq: HAWK, IPO May 2026) |
| Employees | ~750 | ~300 (est.) |
| Total Funding / Market Cap | ~$385M raised; market cap ~$473M (volatile) | ~$1.3B raised pre-IPO; public since May 2026 (Nasdaq: HAWK); market cap ~$1.6B |
| Revenue (2024) | ~$100M (est.) | Not disclosed (est. $60-80M) |
| Constellation Size | ~100+ satellites (LEMUR, later gen) | ~36 satellites (12 clusters of 3) |
| Satellite Type | 3U/6U CubeSats with multi-payload capability | Custom 6U-class sats in 3-satellite clusters |
| Primary RF Capability | AIS (vessel tracking), ADS-B (aircraft), GNSS-RO (weather) | RF geolocation & characterization (SIGINT-lite) |
| Key Data Products | Maritime tracking, weather/climate data, aviation surveillance | RF survey, geolocation of emitters, spectrum monitoring |
| Geolocation Approach | Not primary focus; receives known signals (AIS/ADS-B) | Passive TDOA/FDOA geolocation of unknown RF emitters |
| Defense / IC Customers | Yes: NATO, NGA, NOAA, European defense agencies | Yes: NRO, NGA, DoD, Five Eyes intelligence community |
| Commercial Customers | Shipping, insurance, weather services, agriculture | Telecoms, spectrum regulators, maritime (illegal fishing, smuggling) |
| Weather Data Role | Major GNSS radio occultation provider (NOAA contracts) | Not a weather data provider |
| Space-as-a-Service | Yes: offers hosted payload slots on constellation | No: focused on proprietary RF data products |
| Data Delivery | API-based data feeds, subscription model | Analytics platform (RFGEO), custom reports, API |
| Key Differentiator | Multi-mission constellation (weather + maritime + aviation) | Only commercial provider of precision RF geolocation from space |
Figures as of Sep 25, 2026 (auto-updated daily from company profiles).
Spire Global operates a multi-mission constellation of over 100 CubeSats that collect data across three primary domains: maritime (AIS vessel tracking), aviation (ADS-B aircraft tracking), and weather (GNSS radio occultation for atmospheric profiling). Spire's satellites receive known, cooperative signals: ships and aircraft broadcasting their positions. The weather data comes from measuring how GPS signals bend as they pass through the atmosphere, providing temperature and humidity profiles used by meteorological agencies worldwide. Spire also offers a “Space-as-a-Service” model, hosting third-party payloads on its satellites.
HawkEye 360 takes a fundamentally different approach: its satellites passively detect, geolocate, and characterize RF emissions from the Earth's surface, including emitters that are not broadcasting cooperatively. Using clusters of three satellites flying in formation, HawkEye 360 employs time-difference-of-arrival (TDOA) and frequency-difference-of-arrival (FDOA) techniques to pinpoint the location of radar systems, communication devices, maritime radars, and other RF sources. This capability is essentially commercial SIGINT (signals intelligence): a category that previously only existed within classified government programs.
Both companies serve defense customers, but HawkEye 360's relationship with the intelligence community is deeper and more central to its business model. HawkEye 360 was incubated within Allied Minds and has received contracts from the NRO (National Reconnaissance Office), NGA (National Geospatial-Intelligence Agency), and multiple DoD agencies. Its RF geolocation data is used for maritime domain awareness, sanctions enforcement, spectrum interference detection, and battlefield situational awareness. The company's data is considered a unique commercial capability that supplements classified SIGINT assets.
Spire's defense business is meaningful but represents one segment alongside its commercial weather and maritime customers. Spire has contracts with NATO, NOAA (for weather data), and various European defense agencies. Its AIS data is used for maritime surveillance and illegal fishing detection. However, Spire's defense value proposition is more about persistent global monitoring of cooperative signals, while HawkEye 360's is about detecting and locating non-cooperative or even deliberately hidden emitters: a much higher-value intelligence product.
Spire went public via SPAC in 2021 and has faced the typical post-SPAC challenges: its stock has traded well below the initial valuation, and the company has been working toward profitability while growing revenue toward $100M annually. Spire's diversified data streams (weather, maritime, aviation) provide resilience but also complexity. HawkEye 360 raised over $585M privately before going public on Nasdaq (HAWK) in May 2026. The company's focused mission (RF geolocation) and strong defense customer base give it a clearer path to premium pricing, though the total addressable market is smaller than Spire's broader data business. Both companies benefit from the growing trend of defense and intelligence agencies supplementing classified satellites with commercial data purchases.
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