Firefly Aerospace (FLY.US) Q3 revenue surged 259%, backlog hit a record US$1.7 billion, but adjusted EBITDA loss widened in tandem

Space and defense technology company Firefly Aerospace (FLY.US) released its Q3 2026 financial results after market close on November 11 Beijing time. The "space upstart," which only listed on Nasdaq in August this year, delivered revenue growth of 259% year-over-year and a record backlog of US$1.7 billion; however, the company's cash burn rate is also accelerating, and its stock has fallen from its post-IPO high to near its 52-week low, as the market increasingly scrutinizes its "high-growth, high-burn" model. Rapid revenue growth, but losses still widening The report shows Q3 revenue of US$110.7 million, up 259% from US$30.8 million a year earlier; gross profit of US$25.3 million, a gross margin of about 22.9%. But expenses expanded faster: R&D expenses of US$76 million and SG&A expenses of US$50.9 million, which together far exceeded gross profit, resulting in an operating loss of US$101.6 million for the quarter. GAAP net loss was US$94.2 million, or a loss of US$0.56 per share (versus a net loss of US$133.4 million, or US$1.50 per share, a year earlier); Non-GAAP net loss was US$75.4 million (a loss of US$0.45 per share, better than the market expectation of US$0.60); adjusted EBITDA was a loss of US$69.5 million, wider than the US$46.3 million loss a year earlier. On cash flow, operating cash flow for the quarter was negative US$69.7 million and free cash flow was negative US$85.3 million; cumulative free cash flow for the first nine months of the year was negative US$270 million. As of September 30, the company held US$409.3 million in cash and US$125.4 million in short-term investments, for total liquidity of about US$535 million. The company guided full-year 2026 revenue of US$440 million to US$450 millionimplying Q4 revenue of about US$130 million to US$140 million, continuing sequential growth. US$1.7 billion backlog and three lines firing on all fronts Backlog at the end of Q3 reached US$1.7 billion, a record high (versus US$1.5 billion at the end of the prior quarter). In launch, the company extended its multi-launch agreement with Lockheed Martin through 2031 for up to 25 Alpha Block II launches; signed a contract with Sweden's SSC Space for two commercial Alpha launches at the Esrange Space CenterFirefly's first European launch contracts; previously signed a multi-launch agreement with Japanese SAR satellite company Synspective for up to 10 Alpha launches through 2030; and won a third hypersonic mission order from a confidential customer. In lunar and spacecraft, the company is advancing five lunar missions in parallel; its cleanroom expansion, funded by a non-dilutive grant from the Texas Space Commission, is complete and operational, capable of assembling and integrating up to 12 lunar landers and orbital vehicles simultaneously; the company won its first Mars contracta US$13 million subcontract to build the aeroshell for NASA's Jet Propulsion Laboratory (JPL) SkyFall mission, targeted for launch in late 2028; and it was selected to NASA's US$10 billion CLPS 2 provider pool, competing for large cargo lander mission orders. The defense business (subsidiary SciTec) also landed a dense slate of awards: a US$94 million ground-based radar digitization contract from the Space Force, selection to the US$981 million NITE-STAR IDIQ contract pool (task orders through 2032), an operational milestone for the FORGE missile warning system, an extension of the U.S. Air Force Cloud-Based Command and Control (CBC2) contract expanding counter-UAS sensor integration, and a design contract from the Defense Innovation Unit (DIU) for the Elytra deorbit system. The biggest highlight: the US$1.3 billion strategic partnership with AST SpaceMobile The most important recent order came from direct-to-cell satellite company AST SpaceMobilethe two sides signed a contract worth more than US$1.3 billion in total, covering licensed intellectual property, engine deliveries and engineering support. This means Firefly's Miranda engine will become the propulsion core of AST's in-house rocket Blacklift (Blacklift is a 20-ton-class reusable rocket, planned for introduction in late 2028, carrying up to five BlueBird satellites per launch), upgrading Firefly from a "launch service provider" to an exporter of rocket engines and technology. Miranda engine qualification testing has now begun, with more than 170 hot-fire tests completed cumulatively, paving the way for the first flight of the Eclipse medium-lift rocket. CEO Jason Kim said: "Firefly's third quarter reflects the strength of our diversified, vertically integrated business model. With five lunar missions in progress, Alpha Block II moving toward launch, SciTec executing critical national security programs, and our strategic partnership with AST SpaceMobile, we are converting pipeline and backlog into results." The company also signed a commercial partnership with Starcloud to demonstrate advanced AI computing in lunar orbitbecoming Firefly's first commercial customer for its cislunar data center capability. Firefly's report presents the picture of a typical growth-stage space company: "orders first, revenue catching up, losses buying capacity." Revenue growth of 259%, a US$1.7 billion backlog and a strategic tie-up with AST worth over US$1.3 billion are enough to support the growth narrative; but a net loss of US$283 million in the first nine months, US$270 million in free cash flow burn and about US$535 million in liquidity reserves mean the company must convert orders into revenue before cash runs outwhether it can deliver more than US$130 million in Q4 revenue and whether Miranda qualification and Eclipse's first flight proceed on schedule will directly determine whether the market keeps paying for this story. It is worth noting that the stock had already fallen from its 52-week high of US$62.17 to around US$17, and how the market responds to this "high-growth + high-burn" report card after the earnings release deserves close attention.