Firestorm Labs closed its Series B on April 29, 2026 at $82 million, led by Washington Harbour Partners, bringing total funding to $153 million.

Before the Series B, Firestorm raised a $47 million Series A in July 2025, including $12 million in venture debt from J.P. Morgan alongside equity from NEA, In-Q-Tel, Booz Allen Ventures, Lockheed Martin Ventures, Geodesic, Motley Fool Ventures, Decisive Point, Silent Ventures, 645 Ventures, Overmatch VC, BVVC, Marquee Ventures, Cubit Capital, IronGate, Backswing Ventures, The Veteran Fund, Feld Ventures, and Beyond Capital.

Earlier, Firestorm raised a $12.5 million seed round led by Lockheed Martin Ventures in early 2024. Additional participants across rounds include Ondas, RedCat, and others.

Total disclosed funding stands at $153 million across seed, Series A, and Series B.

Firestorm Labs builds two linked products: xCell, a deployable manufacturing system, and a family of modular drones designed to be built, repaired, and reconfigured near the point of use.

xCell is an expeditionary, semi-automated manufacturing system housed in two expandable 20-foot ISO containers that can run on grid power, generators, or battery arrays. Inside, it uses HP Multi Jet Fusion polymer 3D-printing technology, for which Firestorm holds exclusive mobile distribution rights, to produce drone airframes, spare parts, and mission-specific components on-site. A forward unit can pull from a library of validated digital designs, print the required polymer parts, and use guided assembly workflows to produce a finished aircraft without waiting for rear-echelon resupply. One xCell configuration can produce up to 50 Group 2 UAS per month, and Firestorm claims the system can go from deployment to combat-ready drone production in under 24 hours.

Its primary aircraft is Tempest, a Group 2/3 modular UAS with a 7–9.5 ft wingspan, up to 75 lb max takeoff weight, 10 lb payload capacity, and a range of 100–400 miles depending on configuration. The modular design extends to the airframe: propulsion, payloads, and mission software can be swapped in the field in minutes, and the whole system breaks down into a single-person-portable hard case. The same architecture supports ISR, EW, decoy, and other roles without requiring a clean-sheet design for each.

Two additional platforms are in advanced development. Hurricane is a Common Launch Tube-compatible UAS designed for rapid air-launch from platforms like MQ-9s or AC-130s, with snap-in payloads for kinetic, EW, ISR, or decoy roles. El Niño is a hand-launchable sub-10-lb system with onboard automatic target recognition and autonomous terminal guidance, operable through a body-worn TAK device with no dedicated ground control station required, aimed at small tactical teams that need organic ISR and precision effects without external infrastructure.

The software stack centers on OCTRA, Firestorm's common flight controller, mission computer, and vehicle management system, which runs across the full vehicle family and supports AI autopilots, GPS-denied navigation, terrain following, automatic target recognition, and multiple datalinks. On top of OCTRA sits FirestormOS, EmberCore, SparkSDK, and WarRoom, a simulation and mission planning environment covering swarm coordination, virtual payload testing, and mission rehearsal. Together, the stack gives units a single workflow spanning digital design, manufacturing, assembly, mission planning, and field repair, rather than a mix of tools from separate vendors.

Firestorm Labs sells to the U.S. government and allied defense organizations through a B2B model built around defense hardware, manufacturing infrastructure, and associated services. It is not a SaaS business, and captures value through sales of xCell manufacturing systems, Tempest and other UAS platforms, government development and integration contracts, and ongoing sustainment and deployment support.

The model combines vertical integration with open architecture. Firestorm controls the drone design, the manufacturing container, the common avionics layer, and the mission software stack, but markets the system as compatible with government-owned and third-party designs. xCell can produce Firestorm airframes, partner platforms, and government-owned designs from the same manufacturing node, making it a production layer for a broader defense ecosystem rather than a closed OEM.

The commercial logic links demand for attritable drones with demand for forward production and repair capability. As xCell deployments increase, Firestorm's modular drone designs become more useful within that installed base. Each xCell deployment can create follow-on demand for Tempest airframes, spare parts, materials, and software updates, while each Tempest program can pull buyers toward xCell for sustainment, increasing account depth over time.

The cost structure is hardware-heavy: R&D across aircraft, avionics, and autonomy software; manufacturing integration and ruggedization of containerized systems; supplier relationships and hardware inventory; and field deployment and operator support. Firestorm argues that additive manufacturing, parts commonality, and semi-automated workflows reduce lifecycle cost relative to conventional defense manufacturing, which can matter for buyers focused on sustainment burden as much as raw platform performance. Its exclusive five-year global rights to HP's mobile MJF technology in field-deployable environments add protection on the manufacturing side while that category is still being defined.

Firestorm Labs competes across two converging markets: tactical and attritable UAS procurement, and deployable defense manufacturing infrastructure. No single rival spans both categories, which differentiates Firestorm, but it also exposes the company to specialized competitors in each.

Anduril is the closest benchmark. Its Barracuda program is marketed for hyper-scale production, modular open systems, and mass employment, and Anduril is investing nearly $1 billion in Arsenal-1, a centralized manufacturing facility targeting over 5 million square feet of production space. Firestorm is pursuing distributed forward manufacturing, while Anduril is pursuing centralized industrial scale. Anduril's broader footprint across autonomy, sensors, and C2 also gives it procurement momentum that Firestorm has not yet matched.

AeroVironment remains an incumbent competitor in Group 2/3 systems, with platforms such as the P550 and JUMP 20-X built around MOSA compliance, payload swaps, and third-party integration. Shield AI competes from the autonomy layer with V-BAT and Hivemind, and in 2026 was selected by the U.S. Navy to compete for up to $800 million in ISR task orders. Skydio's X10D is Blue UAS-listed and NDAA-compliant, and is already tied to a U.S. Army order exceeding $52 million for more than 2,500 units, a procurement base Firestorm's smaller-scale fielding has not yet replicated.

Neros targets the same demand signal, cheap, secure, mass-deployable drones, through domestic vertical integration, manufacturing in Los Angeles and insourcing key production steps to maintain a China-free supply chain. It was selected for the Army's PBAS program, won a Marine Corps FPV order, and raised a $75 million Series B in late 2025. Compared with Firestorm, Neros is more narrowly focused, but that narrower offer may be simpler for buyers seeking compliant attritable drones in volume without adopting a new manufacturing model.

PDW's C100 is Blue UAS-approved, NDAA-compliant, and built for tactical missions including ISR, SIGINT, comms relay, and optional release effects. It is a direct substitute when Firestorm is selling adaptable tactical air support rather than the full xCell manufacturing stack.

SPEE3D is the clearest adjacent competitor on the manufacturing side, with deployable cold-spray metal additive systems already used in U.S. Army and Navy-related efforts. In March 2026 it demonstrated restoring a defense asset in under 24 hours using deployable metal additive manufacturing. SPEE3D does not pair its factory with a drone family, but it competes for the same budget logic: if the priority is battlefield sustainment and edge production, a buyer may choose a manufacturing toolchain over a Firestorm-specific airframe ecosystem.

The Marine Corps' January 2026 development of HANX, its first NDAA-compliant, 3D-printed drone, points to a separate threat: government insourcing. Firestorm's support for government-owned designs inside xCell partially hedges that risk, but the broader implication is that edge-manufacturing doctrine could reduce vendor dependence rather than increase it.

Firestorm's expansion logic runs along two axes: broadening the xCell manufacturing platform beyond its own drone family, and deepening the UAS product stack to cover more mission types and more branches of the joint force. The company is trying to move from a drone OEM with a novel manufacturing thesis into a production layer for a wider defense ecosystem.

Firestorm's current product family spans Tempest for Group 2/3 modular ISR and effects, Hurricane for Common Launch Tube air-launched missions, El Niño for small-team precision use, and Squall as an additively manufactured FPV platform designed for xCell production. Each new vehicle type maps to a different procurement bucket, launched effects, attritable ISR, and organic small-team fires, without requiring a new industrial stack, because all of them share OCTRA avionics, FirestormOS, and the same xCell manufacturing workflow.

OCTRA is also a TAM lever. Firestorm describes it as a common control layer for vehicles from roughly 10 pounds upward, with support for AI autopilots, GPS-denied navigation, and payload integrations. If OCTRA and SparkSDK become a standard integration path for new payloads, radios, and autonomy modules, Firestorm can monetize reference avionics, integration kits, and software tooling across platforms it did not design, shifting part of the revenue mix toward platform economics rather than pure hardware margins.

Firestorm's current foothold is primarily Air Force-origin, anchored by the five-year IDIQ and STRATFI funding. The next expansion path is across the joint force: Army launched effects programs, Marine expeditionary logistics, SOCOM austere manufacturing, and Navy distributed maritime operations each represent entry points where Firestorm's architecture is relevant. The Army's 2026 acceleration of launched effects procurement and its emphasis on modular open systems for rapid tech refresh align closely with Hurricane and the broader Firestorm platform family.

Allied and partner-force demand is another expansion vector, particularly in the Indo-Pacific. The May 2026 APFIT award is explicitly framed around U.S. and allied forces in that theater, and xCell is already operational in the region. For smaller allied militaries with limited domestic industrial depth and long resupply lines, a containerized forward factory can be easier to procure and deploy than building sovereign drone-industrial capacity from scratch, which makes Firestorm's proposition stronger in environments where logistics vulnerability is highest.

The HP partnership extends the xCell concept into commercial, humanitarian, and medical sectors, explicitly covering disaster zones, remote medical outposts, and urgent field manufacturing scenarios. Defense remains the near-term center of gravity, but the underlying product architecture is being framed as useful anywhere point-of-need production beats centralized supply chains, giving Firestorm a path to dual-use diversification over time.

The longer-term network model is a fleet of forward-positioned regional xCell nodes that manufacture for host units, allied forces, and theater sustainment hubs, with ongoing revenue from consumables, materials, software updates, and field maintenance across sites. That shifts the TAM from one-off equipment purchases toward a recurring-revenue model tied to operational tempo rather than procurement cycles.

Program concentration: Firestorm's near-term revenue is tied to a small number of U.S. government contract vehicles, the Air Force IDIQ, STRATFI, and APFIT award, so slower-than-expected task-order conversion, shifting theater priorities, or a pause in Indo-Pacific deployment timelines could widen the gap between awarded contract ceilings and recognized revenue.

Edge reliability: Firestorm's business model depends on proving that mobile additive manufacturing can deliver repeatable quality, uptime, and operator usability in austere forward environments at scale rather than only in demonstrations, and any sustained failure of xCell to meet those standards in operational conditions would weaken the thesis and make it easier for buyers to separate drone procurement from manufacturing procurement.

Open-architecture erosion: Firestorm's open-architecture positioning is a procurement advantage today, but as Anduril reframes Arsenal-1 as software-defined manufacturing, Neros deepens domestic vertical integration, and AeroVironment and Shield AI expand their own MOSA claims, the differentiation of being the most interoperable and field-adaptable system narrows, raising the risk that buyers default to incumbents with stronger installed bases rather than adopt Firestorm's production model.