Orion Group Holdings Inc

Proxy Statement on Schedule 14A for the Annual Meeting filed with the Securities and Exchange Commission on April 1, 2026 (the “Proxy Statement”). The foregoing description of the LTIP Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the LTIP Amendment, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference.

At the Annual Meeting, the Company’s stockholders approved an amendment to the Company’s Amended and Restated Certificate of Incorporation, as amended (the “Certificate of Amendment”), to expand exculpation to officers as permitted by Delaware law. Following stockholder approval, the Company filed the Certificate of Amendment with the Secretary of State of the State of Delaware on May 20, 2026, and the Certificate of Amendment became effective upon filing.

The Certificate of Amendment adds a new Article 15 to the Company’s Amended and Restated Certificate of Incorporation, as amended, providing that an officer of the Company shall not be personally liable to the Company or its stockholders for monetary damages for breach of fiduciary duty as an officer, except to the extent that exculpation from liability is not permitted under the Delaware General Corporation Law as in effect at the time such liability is determined. The foregoing description of the Certificate of Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the Certificate of Amendment, which is filed as Exhibit 3.1 to this Current Report on Form 8-K and is incorporated herein by reference.

At the Annual Meeting, a total of 34,648,326 shares of Common Stock, representing 86.18% of the total shares of Common Stock outstanding as of the record date, were present, either through participation at the virtual meeting online or represented by proxy. This percentage constituted a quorum. The final results for each of the matters submitted to a vote of stockholders at the Annual Meeting were as follows:

Proposal No. 1: The Company’s stockholders elected the following two Class I members to the Board, each to serve a three-year term and until his successor is duly elected and qualified.

As previously disclosed in the Proxy Statement, Thomas N. Amonett and Margaret M. Foran each retired from the Board effective at the conclusion of the Annual Meeting. Upon Mr. Amonett’s and Ms. Foran’s retirements, the size of the Board was reduced from eight to six members. The retirements were not the result of any disagreement with the Company on any matter relating to the Company’s operations, policies or practices.

In connection with the foregoing elections and retirements, Michael J. Caliel was appointed to the Nominating and Governance Committee and became Chair. He will continue to serve on the