Schedule II - Valuation And Qualifying Accounts

12 Months Ended

Dec. 31, 2025

Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation And Qualifying Accounts

ORION GROUP HOLDINGS, INC.

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

(Dollars in thousands)

	Balance at the		Charged to				Balance at the
	Beginning of		Revenue, Cost				End of
Description	the Period		or Expense		Deduction		the Period
Year ended December 31, 2023
Allowance for credit losses	$	606	$	(109)	$	136	$	361
Deferred tax asset valuation allowance	$	17,557	$	3,238	$	—	$	20,795
Reserve for losses on uncompleted contracts	$	353	$	547	$	347	$	553
Year ended December 31, 2024
Allowance for credit losses	$	361	$	194	$	—	$	555
Deferred tax asset valuation allowance	$	20,795	$	1,275	$	—	$	22,070
Reserve for losses on uncompleted contracts	$	553	$	4	$	552	$	5
Year ended December 31, 2025
Allowance for credit losses	$	555	$	2,906	$	—	$	3,461
Deferred tax asset valuation allowance	$	22,070	$	(1,854)	$	—	$	20,216
Reserve for losses on uncompleted contracts	$	5	$	137	$	5	$	137