
	Gross Carrying Amount		Impairment		Net Carrying Amount
Balance, December 31, 2025	$	18,697	$	—	$	18,697
Acquisition of Lanteris (Note 3)	360,460		—		360,460
Adjustment related to KinetX acquisition	59		—		59
Balance, June 30, 2026	$	379,216	$	—	$	379,216

Intangible assets, net consist of the following as of June 30, 2026 and December 31, 2025 (in thousands, except useful life in years):


		June 30, 2026
	Weighted average useful life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Acquired intangible assets
Trademark / trade name	1	$	5,000	$	(2,500)	$	2,500
Customer relationships	15	139,900		(4,742)		135,158
Developed technology	15	165,399		(5,988)		159,411
Total intangible assets, net		$	310,299	$	(13,230)	$	297,069


		December 31, 2025
	Weighted average useful life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Acquired intangible assets
Customer relationships	10	$	1,900	$	(47)	$	1,853
Developed technology	10	11,400		(285)		11,115
Total intangible assets, net		$	13,300	$	(332)	$	12,968

Our acquired intangible assets are amortized to expense on a straight-line basis over their estimated useful lives. Amortization expense was $7.1 million and $12.9 million for the three and six months ended June 30, 2026, respectively. No amortization expense was recorded during the three and six months ended June 30, 2025. During the three and six months ended June 30, 2026 and 2025, the Company did not recognize any impairment losses related to intangible assets. As of June 30, 2026, estimated future amortization expense for acquired intangible assets is approximately $12.9 million for the remainder of 2026 and $20.8 million per year for each of the years from 2027 through 2030.