An affiliate of Gulf Coast Specialty Energy Services, which is a portfolio company owned by Grey Mountain Partners, has acquired M&C Oilfield Services, LLC and Marine Partners, LLC. Headquartered in Lake Charles, LA, M&C provides marine construction services for industrial, environmental and oil & gas end markets, including sheetpile and bulkhead installation, pile driving, dock construction and repair, the construction of water control structures and various equipment and vessel rentals. Marine Partners rents both crewed and bareboat shallow draft tugboats, custom built by the Company and uniquely suited to areas where a standard tug would be unable to operate.

Dino Beslic recently joined Grey Mountain Partners as an Associate in the firm’s Boulder, Colorado office. Prior to joining the firm, Dino was an Associate with Citigroup’s Global Industrials group in New York, where he focused on analyzing and executing acquisition financings and leveraged finance transactions.

Colin McCarthy has joined Grey Mountain Partners as a Senior Associate. Prior to joining the firm, Colin was an Associate at Maranon Capital, a Chicago-based investment firm. At Maranon, Colin focused on performing due diligence and executing senior debt, subordinated debt, and minority equity transactions for middle-market companies. Previously, he was an investment banking analyst at William Blair in Chicago.

William Ross has joined Grey Mountain Partners as a Senior Associate. Prior to joining the firm, William was an Associate at Stonehenge Partners, a Columbus, OH-based middle-market private equity and junior capital firm. At Stonehenge, William focused on performing due diligence and executing subordinated debt, minority equity, and control equity transactions.