Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2021

Fair Value Measurements

Schedule of financial assets and liabilities subject to fair value measurements

	As of
	June 30, 2021		Level 1		Level 2		Level 3
	(In thousands)
Assets:
Money market funds and cash equivalents	$	40,174		—	$	40,174		—
Marketable securities		120,591		—		120,591		—
	$	160,765		—	$	160,765		—
Liabilities:
Kolltan acquisition contingent consideration	$	9,008		—		—	$	9,008
	$	9,008		—		—	$	9,008

	As of
	December 31, 2020		Level 1		Level 2		Level 3
	(In thousands)
Assets:
Money market funds and cash equivalents	$	35,066		—	$	35,066		—
Marketable securities		150,586		—		150,586		—
	$	185,652		—	$	185,652		—
Liabilities:
Kolltan acquisition contingent consideration	$	8,267		—		—	$	8,267
	$	8,267		—		—	$	8,267

Schedule of the contingent consideration liabilities measured at fair value using Level 3 inputs

The following table reflects the activity for the Company’s contingent consideration liabilities measured at fair value using Level 3 inputs for the six months ended June 30, 2021 (in thousands):

	Other Liabilities:
	Contingent
	Consideration
Balance at December 31, 2020	$	8,267
Fair value adjustments included in operating expenses		741
Balance at June 30, 2021	$	9,008