Key Takeaways
- • Antin Infrastructure Partners, a French private equity firm, completed the acquisition of Vigor Marine Group from Lone Star Funds, marking the seventh investment from Antin's $11.6 billion Flagship Fund V focused on North American and European infrastructure.
- • Vigor Marine Group generated nearly $1 billion in revenue in 2024 and operates five locations across the United States, providing maintenance, repair, overhaul, marine fabrication and services to naval, defense and commercial maritime sectors.
- • The transaction positions Vigor to expand capacity, accelerate innovation in maritime technology, and grow skilled workforce capabilities to meet increasing demand from U.S. Navy and government and commercial customers.
- • CEO Francesco Valente characterized the partnership as enabling Vigor to become "the most innovative, technologically advanced, forward-looking provider for the U.S. Navy" while strengthening the U.S. maritime industrial base.
- • The acquisition reflects Antin's continued diversification into U.S. infrastructure beyond its existing investments in transportation, energy, and digital sectors.
Summary
Antin Infrastructure Partners, a Paris-based private equity firm specializing in infrastructure investments, has completed its acquisition of Vigor Marine Group from an affiliate of Dallas-based Lone Star Funds, according to a press release dated August 17, 2026. The transaction represents the seventh investment from Antin's $11.6 billion Flagship Fund V, which targets established infrastructure companies across North America and Europe.
Vigor Marine Group is a leading U.S. provider of maintenance, repair and overhaul (MRO) services, marine fabrication and specialized services serving the naval, defense and commercial maritime sectors. The company generated nearly $1 billion in revenue in 2024 and operates across five locations nationwide. Lone Star Funds had held the asset as part of Titan Acquisition Holdings, which was established following Lone Star's acquisition in June 2023 and subsequent consolidation of Vigor Industrial in June 2025.
The acquisition aligns a seasoned infrastructure investor with a strategically significant maritime services provider during a period of heightened demand. According to CEO Francesco Valente, the partnership provides Vigor with capital and expertise to realize its strategic vision of becoming the most innovative and technologically advanced provider for the U.S. Navy and commercial maritime customers. The transaction is expected to facilitate capacity expansion across Vigor's five facilities, accelerate technological innovation within the maritime sector, and support workforce development to address growing customer demand.
Antin's investment in Vigor extends the firm's infrastructure focus beyond its existing portfolio in transportation, energy and digital infrastructure. The acquisition underscores continued private equity interest in critical U.S. industrial assets, particularly those serving defense and government customers with essential maritime capabilities.
Vigor Marine Group is a leading U.S. provider of maintenance, repair and overhaul (MRO) services, marine fabrication and specialized services serving the naval, defense and commercial maritime sectors. The company generated nearly $1 billion in revenue in 2024 and operates across five locations nationwide. Lone Star Funds had held the asset as part of Titan Acquisition Holdings, which was established following Lone Star's acquisition in June 2023 and subsequent consolidation of Vigor Industrial in June 2025.
The acquisition aligns a seasoned infrastructure investor with a strategically significant maritime services provider during a period of heightened demand. According to CEO Francesco Valente, the partnership provides Vigor with capital and expertise to realize its strategic vision of becoming the most innovative and technologically advanced provider for the U.S. Navy and commercial maritime customers. The transaction is expected to facilitate capacity expansion across Vigor's five facilities, accelerate technological innovation within the maritime sector, and support workforce development to address growing customer demand.
Antin's investment in Vigor extends the firm's infrastructure focus beyond its existing portfolio in transportation, energy and digital infrastructure. The acquisition underscores continued private equity interest in critical U.S. industrial assets, particularly those serving defense and government customers with essential maritime capabilities.
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