Orion Group Holdings is a specialty construction company that provides marine and concrete infrastructure services across North America and the Caribbean Basin. The marine segment delivers dredging, marine transportation facility construction, marine pipeline construction, and environmental dredging services, primarily for federal, state, and local government customers as well as private-sector infrastructure and port development; the concrete segment provides concrete placement, finishing, and site preparation services for commercial, structural, and mixed-use projects, concentrated in Texas with expansion into other high-growth markets. The company generates revenue primarily through fixed-price, lump-sum contracts awarded via competitive bidding for both one-time and recurring infrastructure projects, recognizing revenue over time based on actual costs incurred relative to estimated total costs.