Fair Value Measurements

9 Months Ended

Sep. 30, 2019

The fair value of the Company’s financial assets and liabilities reflects the Company’s estimate of amounts that it would have received in connection with the sale of the assets or paid in connection with the transfer of the liabilities in an orderly transaction between market participants at the measurement date. In connection with measuring the fair value of its assets and liabilities, the Company seeks to maximize the use of observable inputs (market data obtained from sources independent from the Company) and to minimize the use of unobservable inputs (the Company’s assumptions about how market participants would price assets and liabilities). The following fair value hierarchy is used to classify assets and liabilities based on the observable inputs and unobservable inputs used in order to value the assets and liabilities:



Level 1:	Quoted prices in active markets for identical assets or liabilities. An active market for an asset or liability is a market in which transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.
Level 2:	Observable inputs other than Level 1 inputs. Examples of Level 2 inputs include quoted prices in active markets for similar assets or liabilities and quoted prices for identical assets or liabilities in markets that are not active.
Level 3:	Unobservable inputs based on the Company’s assessment of the assumptions that market participants would use in pricing the asset or liability.

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. The Company maintains strategic investments separately from the investment policy that governs its other cash, cash equivalents and marketable securities as described in “Note F, “Marketable Securities and Equity Investments.” As of September 30, 2019, the Company’s investments were in money market funds, U.S. Treasury securities, government-sponsored enterprise securities, corporate debt securities, commercial paper and corporate equity securities. Additionally, the Company utilizes foreign currency forward contracts intended to mitigate the effect of changes in foreign exchange rates on its condensed consolidated statement of operations.

As of September 30, 2019, the Company’s financial assets and liabilities that were subject to fair value measurements were valued using both observable and unobservable inputs. The Company’s financial assets valued based on Level 1 inputs consisted of money market funds, U.S. Treasury securities, government-sponsored enterprise securities and corporate equity securities. The Company’s financial assets and liabilities valued based on Level 2 inputs consisted of certain corporate equity securities as described below, corporate debt securities, commercial paper, which consisted of investments in highly-rated investment-grade corporations, and foreign currency forward contracts with reputable and creditworthy counterparties. As discussed further below, the Company’s financial liabilities valued based on Level 3 consisted of acquisition-related contingent milestones. During the three and nine months ended September 30, 2019 and 2018, the Company did not record any other-than-temporary impairment charges related to its financial assets.

The following table sets forth the Company’s financial assets and liabilities subject to fair value measurements (and does not include $1.9 billion and $1.4 billion of cash as of September 30, 2019 and December 31, 2018, respectively):



	Fair Value Measurements as of September 30, 2019
				Fair Value Hierarchy
	Total			Level 1		Level 2			Level 3
	(in thousands)
Financial instruments carried at fair value (asset positions):
Cash equivalents:
Money market funds	$	1,476,254		$	1,476,254	$	—		$	—
U.S. Treasury securities	5,893			5,893		—			—
Government-sponsored enterprise securities	13,370			13,370		—			—
Commercial paper	50,119			—		50,119			—
Marketable securities:
Corporate equity securities	236,184			220,564		15,620			—
Government-sponsored enterprise securities	14,217			14,217		—			—
Corporate debt securities	265,051			—		265,051			—
Commercial paper	82,938			—		82,938			—
Prepaid expenses and other current assets:
Foreign currency forward contracts	27,253			—		27,253			—
Other assets:
Foreign currency forward contracts	1,806			—		1,806			—
Total financial assets	$	2,173,085		$	1,730,298	$	442,787		$	—
Financial instruments carried at fair value (liability positions):
Other current liabilities:
Foreign currency forward contracts	$	(85	)	$	—	$	(85	)	$	—
Long-term contingent consideration	(175,000		)	—		—			(175,000		)
Other long-term liabilities:
Foreign currency forward contracts	(10		)	—		(10		)	—
Total financial liabilities	$	(175,095	)	$	—	$	(95	)	$	(175,000	)



	Fair Value Measurements as of December 31, 2018
				Fair Value Hierarchy
	Total			Level 1		Level 2			Level 3
	(in thousands)
Financial instruments carried at fair value (asset positions):
Cash equivalents:
Money market funds	$	1,226,603		$	1,226,603	$	—		$	—
U.S. Treasury securities	5,966			5,966		—			—
Government-sponsored enterprise securities	7,123			7,123		—			—
Commercial paper	58,268			—		58,268			—
Marketable securities:
Corporate equity securities	167,323			153,733		13,590			—
U.S. Treasury securities	6,026			6,026		—			—
Government-sponsored enterprise securities	10,704			10,704		—			—
Corporate debt securities	233,665			—		233,665			—
Commercial paper	100,390			—		100,390			—
Prepaid expenses and other current assets:
Foreign currency forward contracts	19,023			—		19,023			—
Other assets:
Foreign currency forward contracts	1,514			—		1,514			—
Total financial assets	$	1,836,605		$	1,410,155	$	426,450		$	—
Financial instruments carried at fair value (liability positions):
Other current liabilities:
Foreign currency forward contracts	$	(340	)	$	—	$	(340	)	$	—
Other long-term liabilities:
Foreign currency forward contracts	(108		)	—		(108		)	—
Total financial liabilities	$	(448	)	$	—	$	(448	)	$	—

Please refer to Note F, “Marketable Securities and Equity Investments,” for the carrying amount and related unrealized gains (losses) by type of investment.

Fair Value of Moderna Investment

The Company has an investment in the common stock of Moderna, Inc. (“Moderna”), which became a publicly traded company in 2018. The Company has valued its investment in Moderna based on Level 2 inputs due to transfer restrictions subsequent to Moderna’s initial public offering lasting until December 2019. The reduction in fair value recorded on the Company’s condensed consolidated balance sheet related to this transfer restriction is not material to its financial statements.

Fair Value of Contingent Consideration

The Company’s contingent consideration liabilities, which are related to development and regulatory milestones potentially payable to Exonics former shareholders, are classified as Level 3 within the valuation hierarchy. The Company bases its estimates of the probability of achieving the milestones relevant to the fair value of contingent payments on industry data attributable to rare diseases. The discount rates used in the valuation model for contingent payments represent a measure of credit risk and market risk associated with settling the liabilities. Significant judgment is used in determining the appropriateness of these assumptions at each reporting period. Due to the uncertainties associated with development and commercialization of a drug candidate in the pharmaceutical industry, the Company's estimates regarding the fair value of contingent consideration will change in the future, resulting in adjustments to the fair value of the Company’s contingent consideration liabilities, and the effect of any such adjustments could be material.

The following table represents a rollforward of the fair value of the Company’s contingent consideration liabilities:



	Nine Months Ended September 30, 2019
	(in thousands)
Balance at December 31, 2018	$	—
Contingent consideration related to acquisition of Exonics	172,041
Increase in fair value of contingent payments	2,959
Balance at September 30, 2019	$	175,000

The “Increase in fair value of contingent payments” in the table above was primarily due to changes in market interest rates and the time value of money.

Fair Value of Intangible Asset

As discussed in Note C, “Collaborative Arrangements and Acquisitions,” the fair value of the Company’s $13.0 million in-process research and development intangible asset related to Exonics’ DMD and DM1 programs was determined through a discounted cash flow analysis utilizing Level 3 fair value inputs.

- 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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