Lockheed Martin agrees to buy Ultra Maritime for about $3.45 billion, expanding undersea defense portfolio

Lockheed Martin said it has agreed to acquire Ultra Maritime, a naval defense-technology company, in a deal valued at about $3.45 billion. The announcement, reported Monday, would add Ultra’s capabilities to Lockheed’s broader work in undersea and maritime defense.

According to the report, Lockheed is buying Ultra Maritime from Advent International, a private equity firm. The disclosed headline price is $3.45 billion, a figure that aligns with other market coverage that characterized the transaction as roughly a $3.5 billion acquisition.

While the coverage describes Ultra Maritime as operating in the undersea defense space, the specific technology focus was not fully detailed in the publicly available text behind the initial report. Some secondary reporting has pointed to anti-submarine technology as part of the company’s specialization, but Lockheed’s own transaction documents or a full official release were not included in the material reviewed for this story.

Lockheed’s move fits a broader pattern in defense primes’ strategy: expanding portfolios in specific mission areas where long-term demand is driven by modernization of sensors, platforms, and countermeasures. Undersea warfare has been a sustained priority for many navies, and companies that can provide detection, tracking, and undersea autonomy or survivability features tend to be sought after as procurement cycles extend.

The deal also underscores the continued role of private equity in defense-adjacent technology. Advent International is described in the reported coverage as the seller, indicating that Ultra Maritime’s ownership structure has allowed for an exit into a defense prime. For investors and analysts, that can be a sign that undersea defense suppliers built under private ownership are reaching a scale where a strategic buyer is willing to pay for integration into established product lines.

Lockheed did not provide, in the reviewed excerpt, additional information such as the timing for closing, expected regulatory approvals, or whether Ultra’s operations would be slotted into a particular Lockheed business segment. It also did not include, in the material reviewed, any quantified impact such as expected revenue contribution, margin effects, or how the acquisition would be financed.

What to watch next is the company’s official transaction announcement and any filings that typically follow a major acquisition agreement. Key items would include the closing timeline, deal conditions, and how Lockheed plans to incorporate Ultra’s technology into existing undersea programs or new bids.