The following table summarizes the gross carrying amount and accumulated amortization for each major category of intangible assets as of June 30, 2026 and December 31, 2025:


	June 30, 2026
($ in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Acquired backlog	$	91,244	$	(71,872)	$	19,372
Customer relationships	43,000		(2,867)		40,133
Trade names	15,800		(1,960)		13,840
Developed technology	10,500		(1,400)		9,100
Total	$	160,544	$	(78,099)	$	82,445


	December 31, 2025
($ in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Acquired backlog	$	91,177	$	(43,017)	$	48,160
Customer relationships	43,000		(717)		42,283
Trade names	15,800		(490)		15,310
Developed technology	10,500		(350)		10,150
Total	$	160,477	$	(44,574)	$	115,903

Amortization expense related to intangible assets for the six months ended June 30, 2026 and 2025, was $33.5 million and $16.9 million, respectively. Expected future amortization expense as of June 30, 2026 is as follows:


($ in thousands)	Total
2026	$	24,261
2027	9,560
2028	9,560
2029	9,560
2030	8,720
Thereafter	20,784
Total	$	82,445