STERLING INFRASTRUCTURE, INC.

Sterling Infrastructure, Inc. operates through subsidiaries across three segments: E-Infrastructure Solutions, Transportation Solutions, and Building Solutions. The company primarily serves the United States, specifically the Southern, Northeastern, Mid-Atlantic, and Rocky Mountain regions, as well as the Pacific Islands. E-Infrastructure Solutions offers advanced, large-scale site development and critical electrical services for data centers, semiconductor fabrication, manufacturing, distribution centers, warehousing, and power generation. Transportation Solutions focuses on infrastructure and rehabilitation projects for highways, roads, bridges, airports, ports, rail, and storm drainage systems. Building Solutions provides residential and commercial concrete foundations for single-family and multi-family homes, parking structures, elevated slabs, other concrete work, plumbing services, and surveys for new single-family residential builds. Since 2016, the company's strategic vision has aimed to solidify its base, reduce risk, grow high-margin products and services, achieve bottom-line growth, expand into adjacent markets, and build a platform for future accretive growth. Prior to 2015, the company's business was primarily low-bid heavy highway projects within the Transportation Solutions segment, which had gross margins of approximately 4%.