Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission file number: 1-33891 ORION GROUP HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware S ...

Orion Group Holdings, Inc. (NYSE:ORN) Q4 2021 Results Conference Call March 3, 2022 10:00 AM ET Company Participants Francis Okoniewski - VP, IR Mark Stauffer - President, CEO & Director Conference Call Participants Julio Romero - Sidoti & Company Min Cho - B. Riley Securities Marco Rodriguez - Stonegate Capital Markets Poe Fratt - Noble Capital Markets Operator Greetings. Welcome to the Orion Holdings Fourth Quarter 2021 Conference Call. [Operator Instructions] Please note, this conference is being recorde ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission file number: 1-33891 ORION GROUP HOLDINGS, INC. (713) 852-6500 Registrant's telephone number (including ar ...

Orion Group Holdings, Inc. (NYSE:ORN) Q3 2021 Earnings Conference Call October 28, 2021 10:00 AM ET Company Participants Francis Okoniewski - VP, IR Mark Stauffer - President, CEO & Director Conference Call Participants Marco Rodriguez - Stonegate Capital Markets Julio Romero - Sidoti & Company Alexander Rygiel - B. Riley Securities Charles Fratt - NOBLE Capital Markets Tristan Richardson - D.A. Davidson & Co. Operator Greetings, and welcome to the Orion Group Holdings, Inc. Third Quarter 2021 Conference Ca ...

Orion Group Holdings, Inc. (NYSE:ORN) Q2 2021 Earnings Conference Call July 29, 2021 10:00 AM ET Company Participants Fran Okoniewski – Vice President-Investor Relations Mark Stauffer – President and Chief Executive Officer Robert Tabb – Executive Vice President and Chief Financial Officer Conference Call Participants Alex Rygiel – B. Riley FBR Julio Romero – Sidoti & Company Marco Rodriguez – Stonegate Capital Markets Poe Fratt – NOBLE Capital Markets Operator Greetings, and welcome to Orion Incorporated S ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission file number: 1-33891 ORION GROUP HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware ...

Orion Group Holdings, Inc. (NYSE:ORN) CEO Q1 2021 Earnings Conference Call April 29, 2021 10:00 AM ET Company Participants Francis Okoniewski - VP, IR Mark Stauffer - President and CEO Robert Tabb - EVP and CFO Conference Call Participants Julio Romero - Sidoti & Company Alex Rygiel - B. Riley FBR Marco Rodriguez - Stonegate Capital Markets Poe Fratt - NOBLE Capital Markets Gerry Heffernan - Walthausen & Co. Christopher Sansone - Sansone Advisors Operator Greetings. And welcome to the Orion Group Holdings' ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission file number: 1-33891 ORION GROUP HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delawar ...

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission file number: 1-33891 ORION GROUP HOLDINGS, INC. Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR (Exact name of registrant as specified in its charter) Delaware S ...

Orion Group Holdings, Inc. (NYSE:ORN) Q4 2020 Earnings Conference Call February 25, 2021 10:00 AM ET Company Participants Fran Okoniewski - VP, IR Mark Stauffer - President & CEO Robert Tabb - VP & CFO Conference Call Participants Julio Romero - Sidoti & Company Alex Rygiel - B. Riley FBR Marco Rodriguez - Stonegate Capital Markets Poe Fratt - NOBLE Capital Markets Gerry Heffernan - Walthausen & Co. Fran Okoniewski Good morning everyone, and welcome to Orion Group Holdings' Fourth Quarter 2020 Earnings Conf ...