Orion Group Holdings Inc

Business Overview Orion Group Holdings, Inc. is a leading specialty construction company focused on large-scale, mission-critical, capital projects within the marine and infrastructure sectors. Unless the context otherwise requires, all references herein to Orion, the Company, the Registrant, we, us, or our refer to Orion Group Holdings, Inc. and its consolidated subsidiaries and affiliates. Orion is a Delaware corporation, and its common stock is listed on the New York Stock Exchange and NYSE Texas under the symbol ORN. The Company is headquartered in Houston, Texas with regional offices throughout its operating areas. As of December 31, 2025, we had a workforce of over 2,000 employees who are committed to delivering projects with predictable excellence and guided by our core values: Safety, Quality, Delivery, Teamwork, and Integrity. On February 3, 2026, we entered into a Securities Purchase Agreement (the JEM Purchase Agreement ) and completed an acquisition (the JEM Acquisition ) of all of the capital stock of J.E. McAmis, Inc., a California corporation, and all of the membership interests in JEM Marine Leasing, LLC, a Washington limited liability company (collectively, JEM ). The purchase price consisted of: (a) $50.0 million in cash, subject to adjustments pursuant to the purchase agreement; a $12.0 million unsecured subordinated promissory note; and 182,392 shares of Orion’s common stock, and (b) contingent post-closing cash payments dependent upon project profit realized from contracts of JEM under backlog identified in the JEM Purchase Agreement.