Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2019

3. Fair Value of Financial Instruments

The Company’s financial instruments consist of cash and cash equivalents, investments and accounts payable and, through May 21, 2018, debt and its related debt conversion feature liability. The carrying amounts reported in the accompanying balance sheets for cash and cash equivalents and accounts payable approximate fair value because of the short-term maturity of those instruments. Further, the Company believes the fair value of the debt approximates its carrying value based on relatively stable interest rates and short-term maturity of this instrument. Fair value measurements are classified and disclosed in one of the following three categories:

Level 1 —Quoted prices in active markets for identical assets or liabilities.

Level 2 —Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 —Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

As of June 30, 2019 and December 31, 2018, all of the Company’s financial assets that were subject to fair value measurements were valued using observable inputs. The Company’s financial assets valued based on Level 1 inputs consist of money market funds and certificates of deposit. The Company’s financial assets valued based on Level 2 inputs consist of corporate debt securities, which consist of investments in highly-rated investment-grade corporations.

The Company’s investment strategy is focused on capital preservation. The Company invests in instruments that meet the credit quality standards outlined in the Company’s investment policy. This policy also limits the amount of credit exposure to any one issue or type of instrument. As of June 30, 2019, the Company’s investments were in government money market funds, certificates of deposit, commercial paper and corporate debt securities.

The fair values of the Company’s financial instruments are presented below (in thousands):

			Fair Value Measurements at June 30, 2019
	Total		Level 1		Level 2		Level 3
Financial assets carried at fair value:
Cash equivalents:
Government money market funds	$	12,870	$	12,870	$	—	$	—
Corporate debt securities, available-for-sale		4,557		—		4,557		—
Short-term investments
Certificate of deposit		251		—		251		—
Corporate debt securities, available-for-sale		273,262		—		273,262		—
Total financial assets	$	290,940	$	12,870	$	278,070	$	—

			Fair Value Measurements at December 31, 2018
	Total		Level 1		Level 2		Level 3
Financial assets carried at fair value:
Cash equivalents:
Government money market funds	$	1,724	$	1,724	$	—	$	—
Corporate debt securities, available-for-sale		21,976		—		21,976		—
Short-term investments
Commercial paper, available for sale		3,479		—		3,479		—
Corporate debt securities, available-for-sale		273,262		—		273,262		—
Total financial assets	$	300,441	$	1,724	$	298,717	$	—

- 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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