Acquired intangible assets consisted of the following as of March 31, 2026 and December 31, 2025 (in thousands):


	As of March 31, 2026
	Amortization period (years)	Gross carrying amount		Accumulated amortization			Net carrying amount
Intellectual property	7-15 years	$	16,841	$	(15,939	)	$	902
Trademarks	4-4.5 years		882		(882	)		—
Other	2-7 years		582		(582	)		—
In-process research and development	Indefinite		2,057		—			2,057
Total		$	20,362	$	(17,403	)	$	2,959


	As of December 31, 2025
	Amortization period (years)	Gross carrying amount		Accumulated amortization			Net carrying amount
Intellectual property	7-15 years	$	16,841	$	(15,861	)	$	980
Trademarks	4-4.5 years		882		(882	)		—
Other	2-7 years		582		(582	)		—
In-process research and development	Indefinite		2,057		—			2,057
Total		$	20,362	$	(17,325	)	$	3,037

The weighted average amortization period of our finite-lived intangible assets is 9 years. Amortization expense related to acquired intangibles is estimated at $0.2 million for the remainder of 2026, $0.3 million for the years ending December 31, 2027 and 2028, and $39,000 for the year ending December 31, 2029.