This company wants to stop underwater drones and even submarines with a whole new form of sonar technology
Ultra Maritime demonstrated its Sea Spear passive sonar array and AN/SSQ-125B active sonobuoy integration at the US Navy's Lanternfish 2026 exercise, detecting unmanned underwater vehicles. The company's approach combines existing technologies to provide precise readings. Lockheed Martin agreed to acquire Ultra Maritime for $3.45 billion, adding it to its Rotary and Mission Systems division.
How this was made

The 30-second read
Why it matters
The acquisition is expected to broaden Lockheed's product suite and may drive share price appreciation as investors view the purchase as a strategic expansion into anti‑UUV technology.
Market read
A major M&A deal in the defense sector with immediate pricing implications for Lockheed Martin.
What to watch
Regulatory approvals and potential competition from other sonar providers may affect deal completion.
Background
Ultra Maritime, a private defense‑tech firm, demonstrated a new sonar system that pairs passive arrays with active sonobuoys to detect underwater drones. Lockheed Martin's acquisition aims to incorporate this capability.
Ticker impact
Lockheed Martin announced agreement to acquire Ultra Maritime for $3.45 billion, adding a new sonar technology business to its Rotary and Mission Systems division.
Potential short‑term upside as investors price in the deal premium; medium‑term impact depends on integration success.
Large‑scale M&A at $3.45 B is material for a defense mega‑cap; the deal is newly disclosed and likely to move the share price.
Market effects
Strengthens the defense and naval warfare segment, signaling increased demand for anti‑UUV sonar solutions.
U.S. defense contractors may see heightened interest from allied navies seeking similar capabilities.
Highlights growing focus on counter‑UUV technologies worldwide, potentially influencing defense spending trends.
Counterpoint
Deal could be over‑priced if integration challenges arise, weighing on Lockheed's margins.
Key entities
- CompanyUltra Maritime
Private defense‑technology firm developing sonar solutions for underwater drones.
- CompanyLockheed Martin
U.S. defense contractor acquiring Ultra Maritime for $3.45 billion.




