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FAIR VALUE MEASUREMENT AND FINANCIAL INSTRUMENTS

12 Months Ended

Dec. 31, 2020

FAIR VALUE MEASUREMENT AND FINANCIAL INSTRUMENTS

The carrying values of cash and cash equivalents, restricted cash, prepaid expenses and other current assets, and accounts payable on the Company’s consolidated balance sheets approximated their fair values as of December 31, 2020 and 2019 due to their short-term nature.

Certain of the Company’s financial instruments are measured at fair value using a three-level hierarchy that prioritizes the inputs used to measure fair value. This fair value hierarchy prioritizes the use of observable inputs and minimizes the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:

Level 1: Inputs are quoted prices for identical instruments in active markets,

Level 2: Inputs are quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; or model-derived valuations whose inputs are observable or whose significant value drivers are observable.

Level 3: Inputs are unobservable and reflect the Company’s own assumptions, based on the best information available, including the Company’s own data.

The following tables set forth the carrying amounts and fair values of the Company's financial instruments measured at fair value on a recurring basis as of December 31, 2020 and 2019 (in thousands):


	December 31, 2020
					Fair Value Measurement Based on
	Carrying Amount		Fair Value		Quoted Prices in Active Markets (Level 1)		Significant other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Money market funds (cash equivalents)	$	16,374	$	16,374	$	16,374	$	—	$	—
Liabilities:
Contingent consideration, current portion	8,985		$	8,985	$	—	$	—	$	8,985
Contingent consideration, net of current portion	$	99,855	$	99,855	$	—	$	—	$	99,855


	December 31, 2019
					Fair Value Measurement Based on
	Carrying Amount		Fair Value		Quoted Prices in Active Markets (Level 1)		Significant other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Money market funds (cash equivalents)	$	31,146	$	31,146	$	31,146	$	—	$	—
Liabilities:
Contingent consideration, current portion	—		$	—	$	—	$	—	$	—
Contingent consideration, net of current portion	$	120,020	$	120,020	$	—	$	—	$	120,020

The Company evaluates transfers between fair value levels at the end of each reporting period. There were no transfers of assets or liabilities between fair value levels during the year ended December 31, 2020.

Contingent Consideration

The estimated fair value of the Company’s contingent consideration was determined using probabilities of successful achievement of regulatory milestones and commercial sales, the period in which these milestones and sales are expected to be achieved ranging from 2021 to 2033, the level of commercial sales of Vicineum forecasted for the United States, Europe, Japan, China and other potential markets and discount rates ranging from 8.4% to 8.8% as of December 31, 2020 and 5.6% to 11.8% as of December 31, 2019. There have been no changes to the valuation methods utilized during the year ended December 31, 2020.

The following table sets forth a summary by quarter of the change in the fair value of the Company's contingent consideration liability, measured on a recurring basis at each reporting period, for the year ended December 31, 2020 (in thousands):


Balance at December 31, 2019	$	120,020
Change in fair value included in loss	(53,700)
Balance at March 31, 2020	66,320
Change in fair value included in loss	18,480
Balance at June 30, 2020	84,800
Change in fair value included in loss	18,400
Balance at September 30, 2020	103,200
Change in fair value included in loss	5,640
Balance at December 31, 2020	108,840

Balance at December 31, 2020, current portion	8,985
Balance at December 31, 2020, net of current portion	99,855

The fair value of contingent consideration is determined based on the present value of projected future cash flows associated with regulatory approval milestones and earnouts on net sales and is heavily dependent on discount rates to estimate the fair value at each reporting period. Discount rates have fluctuated significantly in 2020 as a result of the extreme volatility of financial markets as global economies shut down in order to contain the spread of COVID-19. Earnouts are determined using a earnout rate of 2% on all commercial net sales of Vicineum through December 2033. The discount rate applied to the 2% earnout is derived from the Company’s estimated weighted-average cost of capital (“WACC”), which has fluctuated from 5.6% as of December 31, 2019 to 14.7% as of March 31, 2020, 13.2% as of June 30, 2020, 9.4% as of September 30, 2020 and 8.8% as of December 31, 2020. Milestone payments constitute debt-like obligations, and therefore a high-yield debt index rate is applied to the milestones in order to determine the estimated fair value. This index rate changed from 11.8% as of December 31, 2019 to 17.9% as of March 31, 2020, 14.5% as of June 30, 2020, 11.8% as of September 30, 2020 and 8.4% as of December 31, 2020. These changes in discount rates, as well as the refinement of launch timelines in certain markets outside the United States, partially offset by improvements to the competitive landscape, resulted in an overall $11.8 million decrease in the estimated fair value of contingent consideration during the year ended December 31, 2020. The current portion of total contingent consideration reflects amounts expected to be paid out within twelve months of December 31, 2020.

- 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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