As of June 30, 2026 and December 31, 2025, we had goodwill of $257.4 million. There were no impairments to goodwill during the six months ended June 30, 2026 or during prior periods.

The following tables present other intangible assets—net (in millions, except years):


	June 30, 2026
	Weighted-Average Useful Life (in Years)	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Finite-lived intangible assets:
Developed technologies	4.3	$	159.1	$	106.0	$	53.1
Customer relationships	5.3	66.9		48.3		18.6
Trade names	4.2	11.3		8.1		3.2
Backlog	2.5	13.5		11.3		2.2
Total other intangible assets—net		$	250.8	$	173.7	$	77.1


	December 31, 2025
	Weighted-Average Useful Life (in Years)	Gross		Accumulated Amortization		Net
Other intangible assets—net:
Finite-lived intangible assets:
Developed technologies	4.3	$	159.1	$	96.0	$	63.1
Customer relationships	5.3	66.9		42.4		24.5
Trade names	4.2	11.3		5.4		5.9
Backlog	2.5	13.5		9.7		3.8
Total other intangible assets—net		$	250.8	$	153.5	$	97.3

Amortization expense was $9.9 million and $13.2 million during the three months ended June 30, 2026 and 2025, respectively. Amortization expense was $20.2 million and $25.0 million during the six months ended June 30, 2026 and 2025, respectively.

The following table summarizes estimated future amortization expense of finite-lived intangible assets—net (in millions):


	Amount
Years:
2026 (the remainder of 2026)	$	17.0
2027	27.5
2028	20.0
2029	9.3
2030	1.0
Thereafter	2.3
Total	$	77.1