Fair Value Measurements

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

4. FAIR VALUE MEASUREMENTS

Investment Securities

The Company holds investment securities that consist of highly liquid, investment grade debt securities. The Company determines the fair value of its investment securities based upon one or more valuations reported by its investment accounting and reporting service provider. The investment service provider values the securities using a hierarchical security pricing model that relies primarily on valuations provided by an industry-recognized valuation service. Such valuations may be based on trade prices in active markets for identical assets or liabilities (Level 1 inputs) or valuation models using inputs that are observable either directly or indirectly (Level 2 inputs), such as quoted prices for similar assets or liabilities, yield curves, volatility factors, credit spreads, default rates, loss severity, current market and contractual prices for the underlying instruments or debt, and broker and dealer quotes, as well as other relevant economic measures.

Financial assets measured at fair value on a recurring basis as of June 30, 2024 and December 31, 2023 were as follows (in thousands):

	As of June 30, 2024
	Level 1		Level 2		Level 3		Total
Investment securities:
U.S. government obligations	$	269,533	$	—	$	—	$	269,533
Agency obligations		—		7,801		—		7,801
Certificates of deposit		—		735		—		735
Corporate debt securities		—		282,722		—		282,722
Total assets measured at fair value	$	269,533	$	291,258	$	—	$	560,791

	As of December 31, 2023
	Level 1		Level 2		Level 3		Total
Investment securities:
U.S. government obligations	$	280,209	$	—	$	—	$	280,209
Agency obligations		—		21,270		—		21,270
Certificates of deposit		—		2,440		—		2,440
Corporate debt securities		—		196,755		—		196,755
Commercial paper		—		2,984		—		2,984
Total assets measured at fair value	$	280,209	$	223,449	$	—	$	503,658

The Company’s policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 3 during the six months ended June 30, 2024 and 2023.