Intangible assets, net consist of the following as of June 30, 2026:


	Gross value		Accumulated amortization			Net book value		Weighted- average remaining useful life
	(in thousands)							(in years)
In-process research and development — RAS Programs	$	55,800	$	—		$	55,800	n/a
Developed technology — tri-complex platform		7,480		(7,480	)		—		—
Total	$	63,280	$	(7,480	)	$	55,800

Amortization expense amounted to zero and $0.3 million for the three months ended June 30, 2026 and 2025, respectively, and zero and $0.5 million for the six months ended June 30, 2026 and 2025, respectively. The tri-complex platform was fully amortized as of December 31, 2025.

Intangible assets, net consisted of the following as of December 31, 2025:


	Gross value		Accumulated amortization			Net book value		Weighted- average remaining useful life
	(in thousands)							(in years)
In-process research and development — RAS Programs	$	55,800	$	—		$	55,800	n/a
Developed technology — tri-complex platform		7,480		(7,480	)		—		—
Total	$	63,280	$	(7,480	)	$	55,800

The following summarizes the change in the carrying value of goodwill for the three and six months ended June 30, 2026:


	Amount
	(in thousands)
Balance at December 31, 2025	$	14,608
Adjustment		—
Balance at June 30, 2026	$	14,608

No impairment has been recognized during the three or six months ended June 30, 2026. Goodwill recorded is not deductible for income tax purposes.