Lockheed Martin has emerged as the leading bidder to acquire naval defense specialist Ultra Maritime in a deal valued at roughly $3.5 billion, as the U.S. defense giant seeks to strengthen its position in one of the fastest-growing segments of the global military market.
People familiar with the matter told CNBC that Lockheed Martin is currently leading the race to acquire Ultra Maritime, with Guggenheim Securities and JPMorgan advising private equity owner Advent International on the sale process.
The transaction, if completed, would deepen Lockheed Martin’s capabilities in undersea warfare and maritime defense at a time when governments around the world are significantly increasing military spending in response to mounting geopolitical tensions.
A report by the Financial Times last week said negotiations were ongoing and that an agreement could be announced as early as this week.
Advent International had reportedly put Ultra Maritime up for sale earlier this year, seeking a valuation of more than ÂŁ3 billion (about $4 billion).
Ultra Maritime occupies a strategically important niche within the defense industry. The company develops technologies used in anti-submarine warfare, an area that has become increasingly critical as major naval powers modernize their fleets and intensify competition beneath the world’s oceans.
Its portfolio includes sonar systems, radar technologies, electronic warfare equipment, torpedo defense countermeasures, and underwater surveillance systems that help naval forces detect, track, and neutralize submarine threats.
These capabilities have become increasingly valuable as countries expand submarine fleets and invest in protecting critical maritime infrastructure, including undersea communication cables, offshore energy facilities and major shipping lanes.
For Lockheed Martin, the acquisition would complement an already broad defense portfolio spanning air, land, sea, space, and missile defense.
The company is best known for producing the F-35 Lightning II fighter aircraft, one of the world’s most advanced combat jets, alongside missile systems including the Patriot air defense system, precision-guided munitions, missile interceptors, helicopters, satellites, and advanced command-and-control technologies.
Adding Ultra Maritime would strengthen Lockheed Martin’s naval systems business, particularly in anti-submarine warfare, a segment expected to see sustained investment as geopolitical competition increasingly shifts toward maritime domains.
Military planners have placed renewed emphasis on undersea capabilities as strategic competition intensifies in the Indo-Pacific, North Atlantic and Arctic regions.
Growing concern over submarine activity by China and Russia, combined with the vulnerability of undersea communication cables and energy infrastructure, has prompted NATO members and Indo-Pacific allies to accelerate investment in maritime surveillance and anti-submarine technologies.
Large contractors are seeking specialized technologies in the global defense industry to expand capabilities while governments demand integrated defense systems. Private equity firms have likewise become significant owners of defense suppliers in recent years, often investing in specialized businesses before selling them to larger strategic buyers.
The timing coincides with a historic surge in global military expenditure. According to the Stockholm International Peace Research Institute (SIPRI), worldwide defense spending reached $2.89 trillion in 2025, the highest level ever recorded.
Europe accounted for much of the increase as governments accelerated military modernization following Russia’s war in Ukraine, while tensions in the Middle East and the Indo-Pacific further boosted demand for advanced defense equipment.
The wars in Ukraine and Iran, alongside growing security concerns across Asia, have driven increased procurement of missiles, air defense systems, naval platforms and electronic warfare technologies, lifting revenues across the global defense sector.
That spending boom has translated into strong performance for defense stocks throughout 2026, with investors betting that elevated military budgets will persist well beyond current conflicts.
For Lockheed Martin, acquiring Ultra Maritime would not only diversify its portfolio but also position the company to capture a larger share of growing naval modernization programs worldwide.
Analysts note that undersea warfare is becoming an important priority for Western militaries as advances in submarine technology, autonomous underwater vehicles, and maritime surveillance reshape naval operations.






