Orion Group Holdings to Participate in the Roth Capital Partners 14th Annual Deer Valley Event

Group 1 - Orion Group Holdings, Inc. is a leading specialty construction company focused on infrastructure, industrial, and building sectors [2] - The company provides services both on and off the water across the continental United States, Alaska, Hawaii, Canada, and the Caribbean Basin [2] - Orion's marine segment offers construction and dredging services related to marine transportation facilities, marine pipeline construction, and environmental structures [2] - The concrete segment delivers turnkey concrete construction services, including site preparation, layout, forming, and rebar placement for large commercial projects [2] - The company is headquartered in Houston, Texas, with regional offices throughout its operating areas [2] Group 2 - Orion management will participate in the Roth Capital Partners 14th Annual Deer Valley Event, engaging in one-on-one meetings on December 11, 2025 [1]