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Fair Value Measurements | 3 Months Ended
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Mar. 31, 2024
Fair Value Disclosures [Abstract] |
Fair Value Measurements | 4. Fair Value Measurements ASC Topic 820, Fair Value Measurement, establishes a fair value hierarchy for instruments measured at fair value that distinguishes between assumptions based on market data (observable inputs) and the Company’s own assumptions (unobservable inputs). Observable inputs are inputs that market participants would use in pricing an asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. ASC Topic 820 identifies fair value as the exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As a basis for considering market participant assumptions in fair value measurements, ASC Topic 820 establishes a three-tier fair value hierarchy that distinguishes between the following: • Level 1 – Observable inputs such as quoted prices in active markets for identical assets or liabilities. • Level 2 – Inputs, other than quoted prices in active markets, which are observable for the asset or liability, either directly or indirectly. • Level 3 – Unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions. Assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires management to make judgments and consider factors specific to the asset or liability. The Company’s financial assets are subject to fair value measurements on a recurring basis. The Company categorizes its money market funds as Level 1, using the quoted prices in active markets. Commercial paper and U.S. treasury securities are categorized as Level 2, using significant other observable inputs. The fair value of the Company’s investments in certain money market funds is their face value and such instruments are classified as Level 1 and are included in cash and cash equivalents on the consolidated balance sheets. In connection with the Company’s chief executive officer’s (CEO) employment agreement, he is entitled to receive a special performance bonus in the amount of $7.5 million (Performance Award), payable in cash, common stock or a combination of cash and common stock, at the election of the Company, based on achievement of certain conditions as described in more detail in Note 8. The Company estimated the fair value of the Performance Award using a Monte Carlo simulation, which incorporates the stock price at the date of the valuation and utilizes Level 3 inputs such as volatility, probabilities of success, and other inputs that are not observable in active markets. The Performance Award is required to be measured at fair value on a recurring basis each reporting period, with changes in the fair value recognized in general and administrative expense in the consolidated statements of operations and comprehensive loss over the derived service period of the award. No assets or liabilities were transferred into or out of their classifications during the three months ended March 31, 2024. The recurring fair value measurement of the Company’s assets and liabilities measured at fair value at March 31, 2024 consisted of the following (in thousands):
|  | Quoted Prices in Active Markets For Identical Items (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market investments |  | $ | 10,902 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,902 |
U.S. treasury securities |  |  | — |  |  |  | 5,975 |  |  |  | — |  |  |  | 5,975 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  |  | — |  |  |  | 62,439 |  |  |  | — |  |  |  | 62,439 |
Total |  | $ | 10,902 |  |  | $ | 68,414 |  |  | $ | — |  |  | $ | 79,316 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Performance award |  | $ | — |  |  | $ | — |  |  | $ | 7 |  |  | $ | 7 |
Total |  | $ | — |  |  | $ | — |  |  | $ | 7 |  |  | $ | 7 |
The recurring fair value measurement of the Company’s assets and liabilities measured at fair value at December 31, 2023 consisted of the following (in thousands):
|  | Quoted Prices in Active Markets For Identical Items (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |
Money market investments |  | $ | 10,983 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,983 |
U.S. treasury securities |  |  | — |  |  |  | 9,928 |  |  |  | — |  |  |  | 9,928 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  |  | — |  |  |  | 75,331 |  |  |  | — |  |  |  | 75,331 |
Total |  | $ | 10,983 |  |  | $ | 85,259 |  |  | $ | — |  |  | $ | 96,242 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Performance award |  | $ | — |  |  | $ | — |  |  | $ | 7 |  |  | $ | 7 |
Total |  | $ | — |  |  | $ | — |  |  | $ | 7 |  |  | $ | 7 |
The following table sets forth a summary of changes in the fair value measurements of the Performance Award liability (in thousands):
|  | Performance Award |
Balance as of January 1, 2024 |  | $ | 7 |
Change in fair value |  |  | — |
Balance as of March 31, 2024 |  | $ | 7 |

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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