ORION GROUP HOLDINGS, INC. Subsidiaries
Every subsidiary the company listed in Exhibit 21 of its annual reports, newest list first (18 lists). Names and jurisdictions are as filed.
- 2026-03-04: Subsidiary Artemis Business Solutions, LLC.
- 2026-03-04: Subsidiary Commercial Channel & Dock Company.
- 2026-03-04: Subsidiary Dragados/Hawaiian Dredging/Orion JV.
- 2026-03-04: Subsidiary East & West Jones Placement Areas, LLC.
| Annual report filed | Subsidiary | Jurisdiction |
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| 2026-03-04 | Artemis Business Solutions, LLC | |
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| 2026-03-04 | Commercial Channel & Dock Company | |
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| 2026-03-04 | Dragados/Hawaiian Dredging/Orion JV | |
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| 2026-03-04 | East & West Jones Placement Areas, LLC | |
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| 2026-03-04 | Industrial Channel & Dock Company | |
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| 2026-03-04 | King Fisher Marine Services, LLC | |
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| 2026-03-04 | Misener Marine Construction, Inc. | |
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| 2026-03-04 | Northwest Marine Construction, ULC | |
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| 2026-03-04 | OM Marine Services de Mexico (S de R.L. de C.V.) | |
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| 2026-03-04 | Orion Administrative Services, Inc. | |
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| 2026-03-04 | Orion Concrete Construction, LLC | |
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| 2026-03-04 | Orion Construction, LLC | |
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| 2026-03-04 | Orion Corporate Services, LLC | |
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| 2026-03-04 | Orion Government Services, LLC | |
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| 2026-03-04 | Orion Industrial Construction, LLC | |
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| 2026-03-04 | Orion Marine Construction Bahamas, LLC | |
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| 2026-03-04 | Orion Marine Construction TCI, Ltd | |
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| 2026-03-04 | Orion Marine Construction, Inc. | |
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| 2026-03-04 | Orion Marine Contractors, Inc. | |
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| 2026-03-04 | Orion Marine de Mexico (S de R.L. de C.V.) | |
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| 2026-03-04 | Orion Marine Group, LLC | |
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| 2026-03-04 | Preferred Tool Services, Inc. | |
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| 2026-03-04 | Schneider E&C Company, Inc. | |
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| 2026-03-04 | SSL South, LLC | |
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| 2026-03-04 | T. LaQuay Dredging, LLC | |
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| 2026-03-04 | T.A.S. Commercial Concrete Solutions, LLC | |
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| 2026-03-04 | T.A.S. Proco, LLC | |
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| 2026-03-04 | TAS Concrete Construction, LLC | |
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| 2026-03-04 | Tony Bagliore Concrete, Inc. dba T.A.S. Commercial Concrete CTX | |
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