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Financial Instruments and Fair Value Measurements | 6 Months Ended
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Jun. 30, 2020
Financial Instruments and Fair Value Measurements |
Financial Instruments and Fair Value Measurements | 5. Financial Instruments and Fair Value Measurements Equity Investment in Armata On January 27, 2020, we entered into a securities purchase agreement to acquire 8,710,800 shares of Armata’s common stock and warrants to purchase up to 8,710,800 additional shares of its common stock for $25.0 million in cash. Armata is a clinical stage biotechnology company focused on precisely targeted bacteriophage therapeutics for antibiotic-resistant infections. The investment is to support Armata’s ongoing advancement of its bacteriophage development programs including the expected first in human studies related to Armata's lead phage candidate, AP-PA02, targeting Pseudomonas aeruginosa, as well as AP-SA02, its phage candidate targeting Staphylococcus Aureus. The investment was closed in two tranches on February 12, 2020 and March 27, 2020. Two of our board members joined Armata’s board. After the second closing, we owned approximately 46.7% of Armata’s common stock. The investment provides Innoviva the ability to have significant influence, but not control over Armata’s operations. Based on our evaluation, we determined that Armata is a VIE, but Innoviva is not the primary beneficiary of the VIE. We elected the fair value option to account for both Armata’s common stock and warrants at fair value. The fair value of Armata’s common stock is measured based on its closing market price. The warrants have an exercise price of $2.87 per share, are exercisable immediately within five years from the issuance date of the warrants, and include a cashless exercise option. We use the Black-Scholes-Merton pricing model to estimate the fair value of these warrants with the following input assumptions: Armata’s closing market price on the valuation date, the risk-free interest rate computed based on the U.S. Treasury yield, the remaining contractual term as the expected term, and the expected stock price volatility calculated based on the historical volatility of the common stock of Armata’s peer companies. As of June 30, 2020, the fair values of Armata’s common stock and warrants were estimated at $34.1 million and $26.2 million, respectively. The total fair value of both financial instruments in the amount of $60.3 million was recorded as equity investments on the consolidated balance sheets as of June 30, 2020. We recorded $13.4 million and $35.3 million of unrealized gains and fair value changes in Armata’s investments as changes in fair values of equity investments, net on the consolidated statements of income for the three and six months ended June 30, 2020, respectively. Equity Investment in Entasis On April 12, 2020, we entered into a securities purchase agreement with Entasis to purchase 14,000,000 shares of Entasis common stock as well as warrants to purchase 14,000,000 additional shares of its common stock for approximately $35.0 million in cash. Entasis is a clinical-stage biotechnology company focused on the discovery and development of novel antibacterial products. The investment is to support Entasis's ongoing advancement of its pathogen-targeted antibacterial product candidates, which include their global Phase 3 registration trial evaluating a fixed-dose combination of sulbactam and durlobactam (SUL-DUR) against Acinetobacter baumanii infections. The investment was closed in two tranches on April 22, 2020 and June 11, 2020. Innoviva has a right to designate two members to Entasis's board. After the second closing, we owned approximately 51.3% of Entasis's common stock. The investment provides Innoviva the ability to have significant influence, but not control, over Entasis's operations. Based on our evaluation, we determined that Entasis is a VIE, but Innoviva is not the primary beneficiary of the VIE. We elected the fair value option to account for both Entasis's common stock and warrants at fair value. The fair value of Entasis's common stock is measured based on its closing market price at each balance sheet date. The warrants have an exercise price of $2.50 per share, are exercisable immediately within five years from the issuance date of the warrants and include a cashless exercise option. We use the Black-Scholes-Merton pricing model to estimate the fair value of these warrants with the following input assumptions: Entasis's closing market price on the valuation date, the risk-free interest rate computed based on the U.S. Treasury yield, the remaining contractual term as the expected term, and the expected stock price volatility calculated based on the historical volatility of the common stock of Entasis's peer companies. As of June 30, 2020, the fair values of Entasis's common stock and warrants were estimated at $41.4 million and $26.9 million, respectively. The total fair value of both financial instruments in the amount of $68.3 million was recorded as equity investments on the consolidated balance sheets. We recorded $33.3 million of unrealized gains and fair value changes in Entasis's investments as changes in fair values of equity investments, net on the consolidated statements of income for the three and six months ended June 30, 2020. Available-for-Sale Securities The estimated fair value of available-for-sale securities is based on quoted market prices for these or similar investments that were based on prices obtained from a commercial pricing service. Available-for-sale securities are summarized below: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2020
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized | ​ | Estimated
(In thousands) | ​ | Amortized Cost | ​ | Gains | ​ | Losses | ​ | Fair Value
U.S. government securities | ​ | $ | 3,993 | ​ | $ | 6 | ​ | $ | — | ​ | $ | 3,999
Money market funds | ​ |  | 378,472 | ​ |  | — | ​ |  | — | ​ |  | 378,472
Total | ​ | $ | 382,465 | ​ | $ | 6 | ​ | $ | — | ​ | $ | 382,471
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | ​ | ​ | Unrealized | ​ | Unrealized | ​ | Estimated
(In thousands) | ​ | Amortized Cost | ​ | Gains | ​ | Losses | ​ | Fair Value
U.S. government securities | ​ | $ | 53,799 | ​ | $ | 35 | ​ | $ | — | ​ | $ | 53,834
U.S. commercial paper | ​ |  | 18,915 | ​ |  | — | ​ |  | — | ​ |  | 18,915
Money market funds | ​ |  | 233,992 | ​ |  | — | ​ |  | — | ​ |  | 233,992
Total | ​ | $ | 306,706 | ​ | $ | 35 | ​ | $ | — | ​ | $ | 306,741
​ As of June 30, 2020, all of the available-for-sale debt securities had contractual maturities within one year, and the average duration of debt securities was approximately one month. There was no credit loss of these securities as of June 30, 2020. Fair Value Measurements Our available-for-sale securities and equity investments are measured at fair value on a recurring basis and our debt is carried at amortized cost basis. The estimated fair values were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Estimated Fair Value Measurements as of June 30, 2020 Using:
​ | ​ | Quoted Price in | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Active Markets | ​ | Significant Other | ​ | Significant | ​ | ​ | ​
​ | ​ | for Identical | ​ | Observable | ​ | Unobservable | ​ | ​ | ​
Types of Instruments | ​ | Assets | ​ | Inputs | ​ | Inputs | ​ | ​ | ​
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government securities | ​ | $ | — | ​ | $ | 3,999 | ​ | $ | — | ​ | $ | 3,999
Money market funds | ​ |  | 378,472 | ​ |  | — | ​ |  | — | ​ |  | 378,472
Equity investment - Armata Common Stock | ​ | ​ | 34,146 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 34,146
Equity investment - Armata Warrants | ​ | ​ | — | ​ | ​ | 26,181 | ​ | ​ | — | ​ | ​ | 26,181
Equity investment - Entasis Common Stock | ​ | ​ | 41,440 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 41,440
Equity investment - Entasis Warrants | ​ | ​ | — | ​ | ​ | 26,846 | ​ | ​ | — | ​ | ​ | 26,846
Total assets measured at estimated fair value | ​ | $ | 454,058 | ​ | $ | 57,026 | ​ | $ | — | ​ | $ | 511,084
Debt | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
2023 Notes | ​ | $ | — | ​ | $ | 246,303 | ​ | $ | — | ​ | $ | 246,303
2025 Notes | ​ |  | — | ​ |  | 198,997 | ​ |  | — | ​ |  | 198,997
Total fair value of debt | ​ | $ | — | ​ | $ | 445,300 | ​ | $ | — | ​ | $ | 445,300
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Estimated Fair Value Measurements as of December 31, 2019 Using:
​ | ​ | Quoted Price in | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Active Markets | ​ | Significant Other | ​ | Significant | ​ | ​ | ​
​ | ​ | for Identical | ​ | Observable | ​ | Unobservable | ​ | ​ | ​
Types of Instruments | ​ | Assets | ​ | Inputs | ​ | Inputs | ​ | ​ | ​
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government securities | ​ | $ | — | ​ | $ | 53,834 | ​ | $ | — | ​ | $ | 53,834
U.S. commercial paper | ​ |  | — | ​ |  | 18,915 | ​ |  | — | ​ |  | 18,915
Money market funds | ​ |  | 233,992 | ​ |  | — | ​ |  | — | ​ |  | 233,992
Total assets measured at estimated fair value | ​ | $ | 233,992 | ​ | $ | 72,749 | ​ | $ | — | ​ | $ | 306,741
Debt | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
2023 Notes | ​ | $ | — | ​ | $ | 243,394 | ​ | $ | — | ​ | $ | 243,394
2025 Notes | ​ | ​ | — | ​ | ​ | 208,976 | ​ | ​ | — | ​ | ​ | 208,976
Total fair value of debt | ​ | $ | — | ​ | $ | 452,370 | ​ | $ | — | ​ | $ | 452,370
​ The fair value of our marketable securities classified within Level 2 is based upon observable inputs that may include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data, including market research publications. The fair values of our equity investments in Armata and Entasis's common stock are based on their respective closing market prices per share at the reporting date and are classified as Level 1 financial instruments. The fair values of our equity investments in Armata and Entasis's warrants are included within Level 2 as the assumptions used in the valuation model are based on the observable inputs that include their respective closing market prices per share, their respective comparable companies’ market data and the U.S. Treasury yield. The fair value of our 2023 Notes and of our 2025 Notes is based on recent trading prices of the instruments.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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