(7) Fair Value Measurements

The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2022 and December 31, 2021 and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value. In general, fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities. Fair values determined by Level 2 inputs utilize data points that are observable, such as quoted prices, interest rates, exchange rates and yield curves. Fair values determined by Level 3 inputs utilize unobservable data points for the asset or liability. The Company’s Level 1 assets consist of investments in a Treasury money market fund and U.S. government securities. The Company’s Level 3 liabilities represent acquired contingent consideration related to the acquisition of Civitas which are valued using a probability weighted discounted cash flow valuation approach and derivative liabilities related to conversion options for the convertible senior notes due December

2024 which are valued using a binomial model. For assets and liabilities not accounted for at fair value, the carrying values of these accounts approximates their fair values at September 30, 2022, except for the fair value of the Company’s convertible senior notes due December 2024, which was approximately $157.3 million as of September 30, 2022. The Company estimates the fair value of its notes utilizing market quotations for the debt (Level 2).

The following table presents additional information about liabilities measured at fair value on a recurring basis and for which the Company utilizes Level 3 inputs to determine fair value.

Acquired contingent consideration

The Company estimates the fair value of its acquired contingent consideration using a probability weighted discounted cash flow valuation approach based on estimated future sales expected from Inbrija (levodopa inhalation powder), an FDA approved drug for the treatment of OFF periods in Parkinson’s disease. Using this approach, expected future cash flows are calculated over the expected life of the agreement and discounted to estimate the current value of the liability at the period end date. Some of the more significant assumptions made in the valuation include (i) the estimated revenue forecast for Inbrija, and (ii) discount period and rate. The milestone payments ranged from $0 million to $18.1 million for Inbrija. The discount rate used in the valuation was 23% for the three- and nine-month periods ended September 30, 2022, as compared to 20.5% for the three- and nine-month periods ended September 30, 2021. The valuation is performed quarterly and changes in the fair value of the contingent consideration are included in the statement of operations. For the nine-month periods ended September 30, 2022 and 2021, changes in the fair value of the acquired contingent consideration were primarily due to change in projected revenue and the recalculation of cash flows for the passage of time.

The acquired contingent consideration is classified as a Level 3 liability as its valuation requires substantial judgment and estimation of factors that are not currently observable in the market. If different assumptions were used for the various inputs to the valuation approach, including but not limited to, assumptions involving sales estimates for Inbrija and estimated discount rates, the estimated fair value could be significantly higher or lower than the fair value determined.

Derivative Liability-Conversion Option

The following table represents a reconciliation of the derivative liability recorded in connection with the issuance of the convertible senior secured notes due 2024:

During 2019, a derivative liability was initially recorded as a result of the issuance of the 6.00% Convertible Senior Secured Notes due 2024 (See Note 10 to the Consolidated Financial Statements included in this report for more information on the Convertible Senior Notes due 2024). The fair value measurement of the derivative liability is classified as Level 3 under the fair value hierarchy as it has been valued using certain unobservable inputs. These inputs include: (1) share price as of the valuation date, (2) assumed timing of conversion of the Notes, (3) historical volatility of the share price, and (4) the risk-adjusted discount rate used to present value the probability-weighted cash flows. Significant increases or decreases in any of those inputs in isolation could result in a significantly lower or higher fair value measurement. The fair value of the derivative liability was determined using a binomial model that calculates the fair value of the Notes with the conversion feature as compared to the fair value of the Notes without the conversion feature, with the difference representing the value of the conversion feature, or the derivative liability. There are several embedded features within the Notes which, upon issuance, did not meet the conditions for equity classification. As a result, these features were aggregated together and recorded as a derivative liability conversion option. The derivative liability conversion feature is measured at fair value on a quarterly basis and changes in the fair value will be recorded in the consolidated statement of operations. The Company received stockholder approval on August 28, 2020 to increase the number of authorized shares of the Company’s common stock from 13,333,333 shares to 61,666,666 shares. As a result of the share approval, the Company determined that multiple embedded conversion options met the conditions for equity classification. The Company performed a valuation of these conversion options as of September 17, 2020, which was the date the Company completed certain securities registration obligations. The resulting fair value of these conversion options was calculated to be $18.3 million which was reclassified to equity and presented in the statement of stockholder’s equity as of September 30, 2020 net of the $4.4 million tax impact. The equity component is not re-measured as long as it continues to meet the conditions for equity classification. The Company performed a valuation of the derivative liability related to certain embedded conversion features that are precluded from equity classification. The fair value of these conversion features was calculated to be negligible as of September 30, 2022. Key inputs used in the calculation of the fair value include stock price, volatility, risky (bond) rate, and the last observed bond price during the nine-month period ended September 30, 2022.