Fair Value Measurements

12 Months Ended

Dec. 31, 2023

3. Fair Value Measurements

The following tables present information about the Company’s financial assets and liabilities measured at fair value on a recurring basis and indicate the level of the fair value hierarchy utilized to determine such fair values:


			Fair Value Measurements at Reporting Date Using
	December 31,		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	2023
Assets:
Cash equivalents
Money market funds	$	11,167	$	11,167	$	—	$	—
U.S. treasury bills		8,980		—		8,980		—
Total cash equivalents	$	20,147	$	11,167	$	8,980	$	—
Short-term investments:
U.S. treasury bills		76,918		—		76,918		—
U.S. Government Agency and foreign national bank securities		3,482		—		3,482		—
Total Short-term investments	$	80,400	$	—	$	80,400	$	—


			Fair Value Measurements at Reporting Date Using
	December 31,		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	2022
Assets:
Cash equivalents
Money market funds	$	22,580	$	22,580	$	—	$	—
Corporate debt securities		7,089		2,098		4,991		—
Total cash equivalents	$	29,669	$	24,678	$	4,991	$	—
Short-term investments:
US treasury bills		2,966		2,966		—		—
Corporate Bonds and U.S. Government Agency Securities		62,378		4,732		57,646		—
Total Short-term investments	$	65,344	$	7,698	$	57,646	$	—

As of December 31, 2023, the Company’s cash equivalents were invested in money market funds and U.S. treasury bills, which were valued based on Level 1 and Level 2 inputs, respectively. As of December 31, 2023, the Company's short-term investments consisted of U.S. treasury bills which were valued based on Level 2 inputs and U.S. Government Agency Securities and foreign national bank securities, which were valued based on Level 2 inputs.

As of December 31, 2022, the Company’s cash equivalents were invested in money market funds and certain corporate debt securities, which were valued based on Level 1 inputs, and other corporate debt securities which were valued based on Level 2 inputs. As of December 31, 2022, the Company's short-term investments consisted of U.S. treasury bills and certain corporate bonds which were valued based on Level 1 inputs and other Corporate Bonds and U.S. Government Agency Securities, which were valued based on Level 2 inputs. During the preparation of the Company’s annual financial statements, the Company identified an immaterial error in the Company’s historical financial statements whereby the Company misclassified U.S. treasury bills considered to be short-term investments of $22,671 and $58,244 at June 30, 2023 and September 30, 2023, respectively, as a Level 1 investment instead of as a Level 2 investment and misclassified U.S. treasury bills considered to be cash equivalents of $15,937 at September 30, 2023 as a Level 1 investment instead of as a Level 2 investment.

In determining the fair value of its investments at each date presented above, the Company relied on quoted prices for similar securities in active markets or using other inputs that are observable or can be corroborated by observable market data for Level 2 investments. All available-for-sale securities have contractual maturities of less than one year. The Company did not have any financial assets or liabilities during any of the periods presented in the accompanying consolidated financial statements that required Level 3 inputs.

The carrying values of the Company’s accounts payable and accrued expenses approximate their fair values due to the short-term nature of these liabilities.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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