NEWTOWN SQUARE, Pa., Nov. 3, 2026 /PRNewswire/ — Delphinus Engineering (“Delphinus”), a leading provider of maintenance, modernization and industrial services for the U.S. Navy and maritime defense community, today announced its combination with Professional Analysis, LLC (“PAI”). Based in Alexandria, Virginia, PAI provides logistics, materials management and program support services to the U.S. Navy, U.S. Marine Corps and other Department of War customers. Delphinus is a portfolio company of Bluestone Investment Partners.
Founded in 2003, PAI has grown to more than 200 employees supporting customers across the United States and overseas. The company manages military logistics and sustainment activities for the Department of War, ensuring warfighters have access to critical resources. This includes providing spares planning and configuration management for new ship construction and delivering program support to commands including Naval Sea Systems Command (NAVSEA), Naval Facilities Engineering Systems Command (NAVFAC), Naval Supply Systems Command (NAVSUP), Military Sealift Command (MSC), Marine Corps Logistics Command (MARCORLOGCOM), and the Air Force Special Warfare Distribution Center (AFSWDC).
“For over twenty years, PAI has earned the trust of our customers by consistently delivering on our commitments,” said Stephen Mellis, Chief Executive Officer of PAI. “Delphinus demonstrates that same spirit and focus, which makes this a natural fit for our people and our customers. Together, we are bigger than the sum of our individual parts, as our team gains deeper technical resources and opportunities to grow with the fleet, while also giving our customers a single partner that can support them from the waterfront through the supply chain.”
“PAI is a strong strategic and cultural fit for Delphinus. Both companies have built their reputations by delivering for their customers and taking care of their people,” said Roby Lentz, Chief Executive Officer of Delphinus. “The combination expands our ability to support the Navy and Marine Corps across engineering, maintenance, modernization, and logistics. It is an important step toward our ambition of building the nation’s premier naval sustainment organization. We are proud to welcome the PAI team to Delphinus.”
“Bluestone partnered with Delphinus in July 2026 to build a leading naval maintenance, modernization and sustainment platform through investment in its workforce, technical capabilities and strategic acquisitions,” said Kevin Doherty, Principal at Bluestone Investment Partners. “PAI advances that strategy by connecting maintenance and modernization with the logistics and supply chain capabilities essential to fleet readiness. We are excited to support Roby and his team as they continue to grow the company.”
WISTLR served as exclusive financial advisor to PAI.
About Delphinus
Founded in 1994, Delphinus Engineering is a trusted, high-impact partner executing the U.S. Navy’s most complex ship upgrades and engineering challenges, ensuring operational agility and fleet readiness in an evolving defense landscape. Please visit www.delphinus.com for more information.
About PAI
Founded in 2003 and headquartered in Alexandria, Virginia, Professional Analysis, LLC provides logistics, materials management, and program support services to the U.S. Navy, U.S. Marine Corps and other federal customers worldwide. Please visit www.pai-inc.com for more information.
About Bluestone
Bluestone is a private equity firm investing exclusively in lower middle-market companies in the defense and government sector. Bluestone’s principals have a long and successful track record of owning, operating, and investing in businesses supporting critical national security missions. Please visit www.bluestoneinv.com for more information.
View original content:SOURCE Bluestone Investment Partners
