1 unchanged sentence
Market information
−Removed: Our common stock is listed on the New York Stock Exchange (“NYSE”) and trades under the symbol “ORN.”
+Added: Our common stock is listed on the New York Stock Exchange and NYSE Texas and trades under the symbol “ORN.”
As of February 20, 2026, we had approximately 13,079 stockholders of record including beneficial holders.
+Added: Unregistered sales of equity securities and use of proceeds
+Added: There were no unregistered sales or issuer purchases of equity securities during the quarter ended December 31, 2025.
Issuer repurchase of equity securities
Performance graph*
−Removed: The following graph shows the changes in the value of $100 invested in (1) the common stock of Orion Group Holdings, Inc., (2) the Standard & Poor’s 500 Stock Index and (3) the Dow Jones Heavy Construction Group Index.
+Added: The following graph shows the changes in the value of $100 invested in (1) the common stock of Orion Group Holdings, Inc., (2) the Standard & Poor’s 500 Stock Index, (3) the Standard & Poor’s Composite 1500 Construction Index and (4) the Dow Jones Heavy Construction Group Index.
The values of each investment are based on share price appreciation, with reinvestment of all dividends, assuming any were paid.
1 unchanged sentence
Orion Group Holdings, Inc.
+Added: S&P 1500 Construction
Dow Jones US Heavy Civil Construction
+Added: Beginning with this Annual Report, the Company added the S&P 1500 Construction Index as an additional industry comparison, which is expected to be used in the Company’s compensation programs during the year ending December 31, 2026.
+Added: The Company currently expects to discontinue the Dow Jones U.S.
+Added: Heavy Civil Construction Index comparison beginning with next year’s performance graph.
+Added: The Dow Jones index is included in this year’s graph to provide comparability to the index used in the immediately preceding fiscal year.
* This table and the information therein are being furnished but not filed.
−Removed: Such information will not be deemed to be soliciting material or incorporated by reference into any filing under the Securities Act or the Exchange Act, except to the extent that it is specifically incorporated by reference.
+Added: Such information will not be deemed to be soliciting material or incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that it is specifically incorporated by reference.
Securities authorized for issuance under equity compensation plans
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.