The venture-backed defense startup playbook has always had an awkward final chapter: raise private capital, win government contracts, then what? Ursa Major just answered that question in the most direct way possible.
The Colorado-based hypersonics and solid rocket motor company announced plans today to go public via a SPAC merger with Bleichroeder Acquisition Corp. at a $2.3 billion valuation, with the transaction expected to close in Q1 2027. After eleven years and more than $380 million in private capital raised, CEO Chris Spagnoletti's stated rationale is blunt: the company needs production capacity, and public markets can fund it at a scale private rounds can't.
That's the signal worth watching here. Ursa Major has done the hard technical work — a first flight of its Draper liquid rocket engine under the Air Force Research Laboratory's Affordable Rapid Missile Demonstrator program, a $10 million Navy award to advance its MK 104 solid rocket motor, and a hypersonic missile system called HAVOC targeting roughly $3 million per unit. The prototype phase is over. What comes next requires factories, not pitch decks.
The Timing Isn't Accidental
The Army's request this week for 133,014 GMLRS rockets by 2034 — a production rate that would demand a nearly 36% capacity increase beyond what Lockheed Martin is already building toward — makes the broader context clear. The Pentagon's munitions problem is fundamentally a manufacturing problem. Stockpiles drawn down by Ukraine deliveries and the protracted conflict with Iran haven't recovered, and the industrial base that was supposed to replenish them has stumbled badly.
Ursa Major is betting that public capital markets will fund the manufacturing scale that the Pentagon needs but can't build fast enough through traditional prime contractors. It's a reasonable bet — and it rhymes with what's happening across the broader defense tech ecosystem, where companies are increasingly pursuing managed-service and on-demand delivery models rather than waiting for government-owned programs to mature. The question is whether a SPAC structure — historically a mixed vehicle for defense tech — delivers the patient capital that propulsion manufacturing actually requires, or whether quarterly earnings pressure arrives before the production lines do.
Watch the Q1 2027 close and, more