EX-21.1 3 orn-20211231ex211b03aa8.htm EX-21.1

Exhibit 21.1


	LIST OF CORPORATE ENTITIES (UPDATED 2/8/22)

Entity			Abbreviation	State/Province	Owner	Interest
Orion Group Holdings, Inc.			ORN	DE	Parent Company	n/a
OAS	Orion Administrative Services, Inc.		OAS	TX	ORN	100%
		East & West Jones Placement Areas, LLC		EWJ	TX	OAS	100%
		Preferred Tool Services, Inc.		PTS/HITS	TX	OAS	100%
		Orion Marine Group, LLC		OMGLLC	TX	OAS	100%
OMR	Orion Marine Contractors, Inc.		OMR	DE	ORN	100%
OMR		Northwest Marine Construction, ULC		NMC	Canada	OMR	100%
SCH	Schneider E&C Company, Inc.		SCH	FL	ORN	100%
OIC	Orion Industrial Construction, LLC (fka F. Miller Construction, LLC)		OIC	LA	ORN	100%
OCLP	OCLP, LLC		OCLPLLC	NV	ORN	100%
		OCGP, LLC		OCGP	TX	OCLPLLC	100%
		Orion Construction, L.P.		OCLP	TX	OCLPLLC	99%
		Orion Construction, L.P.		OCLP	TX					OCGP (GP)	1%
		OMC	Orion Marine Construction, Inc.	OMC	FL	OCLP	100%
				Orion Marine Construction Bahamas, LLC	OMCBH	Bahamas	OMC	100%
				Orion Marine Construction Cayman, Inc.	OMCCY	Grand Cayman Branch	OMC	100%
				Verdant Isle Port Partners (Joint Venture)	VIPP	Grand Cayman	OMC	2.5%
										Royal Caribbean	47.5%
										Carnival	47.5%
										McAlpine	2.5%
				Orion Marine Construction, Inc.-Honduras	OMCH	Honduran Branch	OMC	100%
				Orion Marine Construction TCI, Ltd	OMCTCI	Turks & Caicos	OMC	100%
				Orion Marine de Mexico (S de R.L. de C.V.)	OMdeMex	Mexico	OMC	99%
				Orion Marine de Mexico (S de R.L. de C.V.)	OMdeMex	Mexico				OAS	1%
				SSL South, LLC	SSL	FL	OMC	100%
				OM Marine Services de Mexico (S de R.L. de C.V.)	OMMSdMex	Mexico	SSL	99%
				OM Marine Services de Mexico (S de R.L. de C.V.)	OMMSdMex	Mexico				OIC	1%
				T. LaQuay Dredging, LLC	TLD	TX	OMC	100%
				King Fisher Marine Services, LLC	KFMS	TX	OMC	100%
				Misener Marine Construction, Inc.	NMCGA	GA	OMC	100%
				Industrial Channel & Dock Company	ICDC	TX	OMC	100%
				Commercial Channel & Dock Company	CCDC	TX	OMC	100%

Exhibit 21.1


	LIST OF CORPORATE ENTITIES (UPDATED 2/8/22)

Entity			Abbreviation	State/Province	Owner	Interest
OCC	Orion Concrete Construction, LLC		OCC	DE	ORN	100%
		TAS Concrete Construction, LLC		TAS	DE	OCC	100%
		Tony Bagliore Concrete, Inc. dba T.A.S. Commercial Concrete CTX		TBC	TX	TAS	100%
		T.A.S. Commercial Concrete Solutions, LLC		TASCCS	TX	OCC	100%
		T.A.S. Proco, LLC		TASP	TX	TASCCC	99%
		T.A.S. Proco, LLC		TASP	TX					OCC	1%
OCS	Orion Corporate Services, LLC		OCS	TX	ORN	100%
OCS		Artemis Business Solutions, LLC		ABS	LA	OCS	100%
OGS	Orion Government Services, LLC		OGS	WA	OMR	50%
OGS	Orion Government Services, LLC		OGS	WA						OCLP	50%