Key Facts
| Headquarters | Syracuse, New York[7] |
| Founded | 2018[7] |
| Total Funding | $120.1 million cumulativeThrough Series C (February 2025)[1] |
| Series C | $65 millionFebruary 2025; led by DFJ Growth with Booz Allen Ventures, Revolution Growth, Costanoa Ventures, Founders Circle[3] |
| Series B | $35 million2024; led by Lauder Partners with Booz Allen Ventures, Washington Harbour Partners, Veteran Ventures, Valor Equity[3] |
| Series A | $17.6 millionJanuary 2021; led by Lobby Capital with Lockheed Martin[3] |
| DoD APFIT Funding | $10 millionTactical passive C-UAS radar pilot[8] |
| NDAA / Federal Procurement | Compliant; APFIT-funded; DIU C-sUAS Low-Cost Sensing Challenge top performer[6] |
FUNDING HISTORY
PRODUCTS
Tactical Passive Radar[5]
Distributed passive RF radar architecture for counter-UAS detection. Operates without active emissions, providing covert detection at range.
Drone Intelligence Assessment
Hidden Level has built one of the most operationally distinctive sensor architectures in the US counter-UAS sector. Tactical passive radar reverses the standard active-radar paradigm. Rather than emitting and listening for returns, Hidden Level's network detects drone signatures from existing electromagnetic emissions in the environment, producing detection capability without exposing the sensor itself to detection or jamming.
The capital trajectory reflects the structural demand for this architecture. Total funding of $120.1 million across three rounds since 2021, with the Series C of $65 million in February 2025 led by DFJ Growth, indicates investor positioning ahead of the FY27 DAWG procurement cycle. The investor mix is unusually defence-aligned. Lockheed Martin participated in the Series A in 2021. Booz Allen Ventures and Washington Harbour Partners feature in subsequent rounds. The Department of Defense provided $10 million in non-dilutive capital through the APFIT pilot programme.
The strategic question for the counter-UAS segment is the role of passive sensing alongside the active radar and directed-energy systems that Epirus, CHAOS, and the established defence primes are scaling. Passive radar is complementary rather than competitive in most operational deployments. The likely outcome is integration of Hidden Level's sensor network with other counter-UAS effects systems, with the company occupying a defensible position in the detection layer of a multi-vendor counter-UAS architecture.
Related Briefings
Related Intelligence
Sources & References
Drone Intelligence — Company Profile. Compiled from public filings, primary sources, and verified disclosures. Last updated 2 May 2026.
paul@droneintelligence.ai