orion group holdings, inc., a leading specialty construction company, provides services both on and off the water in the continental united states, alaska, canada and the caribbean basin through its heavy civil marine construction segment and its commercial concrete segment. the company’s heavy civil marine construction segment services includes marine transportation facility construction, marine pipeline construction, marine environmental structures, dredging of waterways, channels and ports, environmental dredging, design, and specialty services. its commercial concrete segment provides turnkey concrete construction services including pour and finish, dirt work, layout, forming, rebar, and mesh across the light commercial, structural and other associated business areas. the company is headquartered in houston, texas with regional offices throughout its operating areas.