Antin Infrastructure Partners to Acquire Vigor Marine Group

By Global Infrastructure Sherpa · Feb 8, 2026

Acquisition Shipbuilding announced Portland, United States

Antin Infrastructure Partners, a leading private equity firm, has agreed to acquire Vigor Marine Group, a provider of maintenance, repair, and overhaul services to the naval, defense, and commercial maritime sectors in the United States. The acquisition marks Antin's continued investment in U.S. infrastructure and represents the seventh investment by the firm's $11.8 billion Flagship Fund V. Vigor Marine Group will continue to be led by its current CEO, Francesco Valente, and the U.S.-based management team. The transaction is subject to customary regulatory approvals and is expected to close in 2026.

Deal Analysis

Antin Infrastructure Partners' acquisition of Vigor Marine Group represents a strategic move to expand its U.S. infrastructure portfolio into the critical maritime sector. Vigor Marine Group, a key player in maintenance, repair, and overhaul services for naval, defense, and commercial vessels, provides Antin with exposure to a stable and growing market driven by ongoing maintenance needs and potential government spending. The deal, funded through Antin's Flagship Fund V, signals the firm's continued confidence in the U.S. infrastructure market and its commitment to investing in essential services. The continued leadership of Vigor's current CEO and management team suggests a focus on operational continuity and leveraging existing expertise. The anticipated closing in 2026 indicates a potentially complex regulatory review process, given the involvement of defense-related assets. The involvement of prominent players such as Lone Star Funds as the seller, and advisors like Evercore, J.P. Morgan Securities, and Macquarie Capital, underscores the significance of this transaction within the infrastructure investment landscape. Legal counsel from Milbank, Kirkland & Ellis, and Latham & Watkins further highlights the deal's complexity and the need for specialized expertise. This acquisition positions Antin to capitalize on the increasing demand for maritime infrastructure services, particularly in the U.S. Pacific Northwest, and potentially expand Vigor's capabilities and reach through further investment and strategic partnerships.

Antin Infrastructure Partners is acquiring Vigor Marine Group, a key player in U.S. maritime maintenance and repair.
The deal is funded by Antin's $11.8 billion Flagship Fund V, demonstrating a significant investment in U.S. infrastructure.
The transaction involves prominent financial and legal advisors, highlighting its complexity and importance.
Vigor's existing management team will remain in place, ensuring operational continuity.

Market Context: The shipbuilding and ship repair sector in the United States is driven by both commercial and government demand, with a focus on maintenance, modernization, and new construction. The Pacific Northwest region is a key hub for maritime activity, making Vigor Marine Group a strategically important asset.