Joby’s $500M Resonant Deal Buys Revenue, Not a Flying-Taxi Dream
A flying-taxi company just spent $500 million buying the bit of its business that already makes money. That is either brutally smart or a very expensive admission.
Joby Aviation’s $500 million purchase of Resonant Sciences is not really a flying-taxi deal.
It is an admission that investors are sick of being asked to fund a beautiful future while waiting for an actual business to show up.
On August 11, Joby agreed to buy Dayton, Ohio-based defense-technology company Resonant Sciences for roughly $500 million: about $450 million in cash and $50 million in Joby shares. Resonant brings more than $100 million in trailing-12-month revenue, high-teens adjusted EBITDA margins in recent periods, roughly 250 staff, classified-program capability and a serious manufacturing footprint. The deal is expected to close in the first half of 2027.
That is a far more tangible asset than the usual eVTOL sales pitch: computer renderings, regulatory milestones and a promise that city skies will soon be full of quiet electric aircraft.
I don’t say that to knock Joby’s ambition. Big outcomes require big bets. But capital markets do not pay forever for ambition alone. Eventually, the question becomes painfully simple: where is the cash coming from before the dream arrives?
Joby is buying the boring bit because boring pays
Resonant makes the sort of things most consumers will never see and governments will happily pay for: radio-frequency systems, sensing, electronic countermeasures, communications, radomes, low-observability structures and mission systems for US national-security customers and prime contractors.
Not sexy. Very useful.
The company says revenue grew about 40% year over year to more than $100 million over the past 12 months. It also reported that first-half 2026 bookings were more than three times the previous year’s first-half figure, while backlog more than doubled year over year.
Those are the numbers that matter. They suggest Joby did not buy a PowerPoint deck dressed up in camouflage. It bought a business with customers, production, contracts, technical talent and operating cash generation.
At $500 million, Joby is paying roughly five times Resonant’s trailing revenue. That is not cheap in an old-school industrial sense. But it is a much more understandable price than the mad valuations routinely thrown at companies with no meaningful revenue, no repeatable production and no proof that a regulator will let them operate at scale.
The structure matters too. Joby is using approximately 90% cash and 10% stock. That says management wanted certainty for the seller and believed the asset was worth putting real money behind. It also means the acquisition has to earn its keep. Cash spent on Resonant is cash not available for certification, aircraft production, infrastructure or another capital raise avoided.
This is not a harmless bolt-on. It is a strategic choice.
The real story: Joby is splitting the company in two
After the transaction closes, Resonant will become Joby’s dedicated defense business, still led by its co-founder and chief executive, J. Micah North. Joby plans to move its existing defense initiatives into that unit, including turbine-electric and hydrogen-electric aircraft work and its autonomy technology stack.
The commercial side is meant to stay focused on certifying, manufacturing and launching Joby’s electric air-taxi business.
That split is the smartest part of the deal.
Too many companies confuse “synergy” with “putting every smart person in the same room and hoping magic happens.” That is how a business with one hard problem ends up with five. Commercial aviation certification is hard enough. Government procurement, classified programs, military customer requirements and defence manufacturing are hard enough. Blending them without clear ownership would be a management headache with wings.
Joby’s answer is sensible: put the defence work where the defence muscle already lives, and stop letting it distract the team trying to get passenger aircraft into service.
It is also not Joby’s first attempt to buy time and revenue rather than merely burn cash. Last year it acquired Blade Air Mobility’s helicopter rideshare operation for about $125 million. In the second quarter of 2026, Joby reported $38.6 million in revenue, with $36.2 million coming from Blade.
That tells you everything. The company has already learned that owning an operating business can be more valuable than telling investors an operating business is coming.
Why defence is the obvious second market for eVTOL
The commercial eVTOL market has always had a timing problem. The technology may work. The aircraft may fly. But certification, manufacturing at scale, airspace integration, charging, vertiports, insurance, public acceptance and unit economics all need to line up at once.
That is a lot of moving parts before a commuter can book a flight over traffic.
Defence does not remove the technical difficulty, but it changes the buyer and the use case. Militaries care about range, survivability, sensing, autonomy, logistics and communications. They may accept different trade-offs than a passenger service does. A hybrid or hydrogen-electric aircraft may be much more useful in that setting than a pure battery-electric commuter aircraft constrained by short urban routes.
Joby had already signalled this direction through its work with L3Harris on a gas-turbine hybrid VTOL aircraft designed for defence applications. Resonant adds the hardware and customer intimacy that turn an aircraft platform into a military system.
That distinction is massive.
An aircraft is a product. A system is a product wrapped in sensors, communications, software, mission equipment, production capacity, approvals and customer trust. The system gets closer to the budget. And the budget is where the money is.
The overlooked angle: this is a manufacturing deal disguised as a technology deal
Everyone will talk about classified capabilities and autonomy. Fair enough. But the less glamorous asset may be the most valuable one: production capacity.
Resonant operates about 105,000 square feet across seven Dayton-area buildings, with another 125,000-square-foot facility under construction. Combined with Joby’s existing Ohio facilities, the companies expect to have about 1 million square feet of manufacturing, integration and testing space in the Dayton region.
That is not merely a property statistic for a press release. It is a supply-chain moat.
A lot of startups can build a clever prototype. Far fewer can make the same complicated thing reliably, repeatedly, securely and at a quality level a serious customer will accept. Fewer still can do it while recruiting specialised engineers and technicians in a labour market that is already tight.
Joby is buying a capability most founders underestimate until they need it: the ability to build things without reinventing the factory every quarter.
If you run a business, remember this. The spreadsheet makes it look as though buying capacity is expensive. Building capacity from scratch looks cheaper right up until the delays, mistakes, recruitment problems, quality failures and customer churn arrive. Then you learn why an established operator costs real money.
The contrarian case: this could become a very costly distraction
Let’s not pretend there is no risk here.
Joby shares fell 6.5% in premarket trading after the announcement, according to Reuters. Markets can be wrong for a day, but the reaction reflects a legitimate concern: a company still pursuing a difficult commercial aviation launch is committing $450 million of cash to a wholly new operating division.
The risks are obvious.
First, this deal has not closed. It is subject to regulatory review and customary conditions, with closing expected in the first half of 2027.
Second, defence revenue can be sticky, but it is not magic. Government budgets shift. Program timing moves. Large customers have negotiating power. Classified work can make outside investors less able to judge what they actually own.
Third, integration can ruin a good acquisition. Joby is sensibly keeping Resonant’s name, leadership and customer commitments in place. It should go further: avoid corporate theatre, preserve the people who understand the customers, and measure success by bookings, margins, delivery performance and retention — not glossy “strategic synergy” slides.
The biggest danger is philosophical. If Joby uses Resonant as a convenient excuse to delay commercial execution, then it has bought a cash-generating distraction. If it uses Resonant to fund, sharpen and de-risk its broader aviation platform while protecting the commercial team’s focus, it has bought an engine.
That is the whole bet.
What this means for you
Whether you are a founder, operator, investor or saver, the lesson is not “go buy a defence contractor.” Don’t be ridiculous.
The lesson is to separate the story asset from the cash asset.
The story asset is what gets attention: the moonshot product, the new market, the category-defining vision. You need one. It attracts talent, customers and capital.
The cash asset is what pays the bills while the story matures: a profitable service line, an established customer base, a distribution channel, maintenance revenue, a lower-glamour product with repeat orders.
The best businesses own both. The dangerous ones only have the story.
So do this tomorrow:
1. Write down your cash asset. If you cannot identify it in one sentence, you may be funding a dream without a bridge to it. 2. Measure the boring metrics. Revenue quality, gross margin, renewal rates, backlog, delivery time and customer concentration beat applause every time. 3. Buy capability when the clock matters. If manufacturing, compliance, distribution or customer trust would take five years to build, acquisition can be cheaper than false economy. 4. Keep the acquired business intact long enough to learn from it. Do not suffocate the thing you bought with your own bureaucracy. 5. Never let a new revenue stream excuse failure in the core business. Joby still needs to deliver its commercial aircraft plan. Resonant makes that job more financeable; it does not make it optional.
Joby has made a grown-up move. It spent $500 million on revenue, margins, factories, defence relationships and hard-won credibility — not another promise about a future customer.
Now comes the difficult bit: proving it bought an engine rather than a very expensive security blanket.