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Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
_______________________________________________________________________
FORM 10-Q
_______________________________________________________________________
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2020
or
TRANSITION REPORTS PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from       to       
Commission File Number: 0-24006
_______________________________________________________________________
NEKTAR THERAPEUTICS
(Exact name of registrant as specified in its charter)
_______________________________________________________________________
Delaware94-3134940
(State or other jurisdiction of
incorporation or organization)
(IRS Employer
Identification No.)
455 Mission Bay Boulevard South
San Francisco, California 94158
(Address of principal executive offices)
415-482-5300
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading symbol(s)Name of each exchange on which registered
Common Stock, $0.0001 par valueNKTRNASDAQ Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes x  No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes x  No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerAccelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. 
Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).  Yes   No
The number of outstanding shares of the registrant’s Common Stock, $0.0001 par value, was 178,899,759 on July 31, 2020.


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NEKTAR THERAPEUTICS
INDEX
6
Item 3.

2

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Forward-Looking Statements
This report includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (Securities Act), and Section 21E of the Securities Exchange Act of 1934, as amended (Exchange Act). All statements other than statements of historical fact are “forward-looking statements” for purposes of this quarterly report on Form 10-Q, including any projections of market size, earnings, revenue, milestone payments, royalties, sales or other financial items, any statements of the plans and objectives of management for future operations (including, but not limited to, preclinical development, clinical trials and manufacturing), any statements related to our financial condition and future working capital needs, any statements regarding potential future financing alternatives, any statements concerning proposed drug candidates, any statements regarding the timing for the start or end of clinical trials or submission of regulatory approval filings, any statements regarding future economic conditions or performance, any statements regarding the initiation, formation, or success of our collaboration arrangements, timing of commercial launches and product sales levels by our collaboration partners and future payments that may come due to us under these arrangements, any statements regarding our plans and objectives to initiate or continue clinical trials, any statements related to potential, anticipated, or ongoing litigation, any statements concerning estimates and predictions of the COVID-19 pandemic's impact on our business and clinical trials and any statements of assumptions underlying any of the foregoing. In some cases, forward-looking statements can be identified by the use of terminology such as “may,” “will,” “expects,” “plans,” “anticipates,” “estimates,” “potential” or “continue,” or the negative thereof or other comparable terminology. Although we believe that the expectations reflected in the forward-looking statements contained herein are reasonable, such expectations or any of the forward-looking statements may prove to be incorrect and actual results could differ materially from those projected or assumed in the forward-looking statements. Our future financial condition and results of operations, as well as any forward-looking statements, are subject to inherent risks and uncertainties, including, but not limited to, the risk factors set forth in Part II, Item 1A “Risk Factors” below and for the reasons described elsewhere in this quarterly report on Form 10-Q. All forward-looking statements and reasons why results may differ included in this report are made as of the date hereof and we do not intend to update any forward-looking statements except as required by law or applicable regulations. Except where the context otherwise requires, in this quarterly report on Form 10-Q, the “Company,” “Nektar,” “we,” “us,” and “our” refer to Nektar Therapeutics, a Delaware corporation, and, where appropriate, its subsidiaries.
Trademarks
The Nektar brand and product names, including but not limited to Nektar®, contained in this document are trademarks and registered trademarks of Nektar Therapeutics in the United States (U.S.) and certain other countries. This document also contains references to trademarks and service marks of other companies that are the property of their respective owners.
3

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PART I: FINANCIAL INFORMATION
Item 1. Condensed Consolidated Financial Statements—Unaudited:
NEKTAR THERAPEUTICS
CONDENSED CONSOLIDATED BALANCE SHEETS
(In thousands, except par value)
(Unaudited)
June 30, 2020December 31, 2019
ASSETS
Current assets:
Cash and cash equivalents
$58,206  $96,363  
Short-term investments
980,191  1,228,499  
Accounts receivable
47,245  36,802  
Inventory
12,584  12,665  
Advance payments to contract manufacturers
15,972  31,834  
Other current assets
37,770  15,387  
Total current assets
1,151,968  1,421,550  
Long-term investments
172,166  279,119  
Property, plant and equipment, net
61,372  65,665  
Operating lease right-of-use assets
131,458  134,177  
Goodwill
76,501  76,501  
Other assets1,413  344  
Total assets
$1,594,878  $1,977,356  
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Senior secured notes, net and interest payable (see Note 1)$  $252,891  
Accounts payable
19,246  19,234  
Accrued compensation
22,548  11,467  
Accrued clinical trial expenses
42,794  32,626  
Accrued contract manufacturing expenses
11,050  7,304  
Other accrued expenses
11,424  12,338  
Operating lease liabilities, current portion
15,139  12,516  
Deferred revenue, current portion
1,757  5,517  
Total current liabilities
123,958  353,893  
Operating lease liabilities, less current portion
141,633  142,730  
Liability related to the sale of future royalties, net
68,284  72,020  
Deferred revenue, less current portion
2,524  2,554  
Other long-term liabilities2,239  768  
Total liabilities
338,638  571,965  
Commitments and contingencies


Stockholders’ equity:
Preferred stock, $0.0001 par value; 10,000 shares authorized; no shares designated or outstanding at June 30, 2020 or December 31, 2019
    
Common stock, $0.0001 par value; 300,000 shares authorized; 178,810 shares and 176,505 shares outstanding at June 30, 2020 and December 31, 2019, respectively
18  17  
Capital in excess of par value
3,338,876  3,271,097  
Accumulated other comprehensive income (loss)715  (1,005) 
Accumulated deficit
(2,083,369) (1,864,718) 
Total stockholders’ equity
1,256,240  1,405,391  
Total liabilities and stockholders’ equity
$1,594,878  $1,977,356  
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
4

Table of Contents
NEKTAR THERAPEUTICS
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share information)
(Unaudited)
Three months ended June 30,Six months ended June 30,
2020201920202019
Revenue:
Product sales
$5,485  $4,346  $8,929  $8,744  
Royalty revenue
9,403  7,343  19,122  18,733  
Non-cash royalty revenue related to sale of future royalties
7,684  9,091  17,579  17,321  
License, collaboration and other revenue
26,275  2,535  53,790  6,739  
Total revenue
48,847  23,315  99,420  51,537  
Operating costs and expenses:
Cost of goods sold
5,773  5,018  9,584  10,458  
Research and development
96,436  106,686  205,423  225,149  
General and administrative
24,347  22,581  50,564  47,587  
Impairment of assets and other costs for terminated program    45,189    
Total operating costs and expenses
126,556  134,285  310,760  283,194  
Loss from operations(77,709) (110,970) (211,340) (231,657) 
Non-operating income (expense):
Interest expense
(647) (5,231) (6,851) (10,457) 
Non-cash interest expense on liability related to sale of future royalties
(6,691) (5,975) (13,659) (12,040) 
Interest income and other income (expense), net
5,191  11,989  13,543  24,472  
Total non-operating income (expense), net
(2,147) 783  (6,967) 1,975  
Loss before provision for income taxes(79,856) (110,187) (218,307) (229,682) 
Provision for income taxes144  99  344  236  
Net loss$(80,000) $(110,286) $(218,651) $(229,918) 
Basic and diluted net loss per share$(0.45) $(0.63) $(1.23) $(1.32) 
Weighted average shares outstanding used in computing basic and diluted net loss per share178,327  174,549  177,755  174,206  
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

5

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NEKTAR THERAPEUTICS
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
(In thousands)
(Unaudited)
Three months ended June 30,Six months ended June 30,
2020201920202019
Net loss$(80,000) $(110,286) $(218,651) $(229,918) 
Other comprehensive income (loss):
Net unrealized gain on available-for-sale investments7,688  2,197  2,567  6,882  
Net foreign currency translation gain (loss)(96) 108  (847) 143  
Other comprehensive income7,592  2,305  1,720  7,025  
Comprehensive loss$(72,408) $(107,981) $(216,931) $(222,893) 
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
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NEKTAR THERAPEUTICS
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In thousands)
(Unaudited)
Common
Shares
Par
Value
Capital in
Excess of
Par Value
Accumulated
Other
Comprehensive Income (Loss)
Accumulated
Deficit
Total
Stockholders’
Equity
Balance at December 31, 2018173,530  $17  $3,147,925  $(6,316) $(1,424,051) $1,717,575  
Shares issued under equity compensation plans698  —  5,463  —  —  5,463  
Stock-based compensation—  —  25,385  —  —  25,385  
Comprehensive income (loss)—  —  —  4,720  (119,632) (114,912) 
Balance at March 31, 2019174,228  17  3,178,773  (1,596) (1,543,683) 1,633,511  
Shares issued under equity compensation plans738  —  7,103  —  —  7,841  
Stock-based compensation—  —  24,522  —  —  24,522  
Comprehensive income (loss)—  —  —  2,305  (110,286) (107,981) 
Balance at June 30, 2019174,966  $17  $3,210,398  $709  $(1,653,969) $1,557,155  
Common
Shares
Par
Value
Capital in
Excess of
Par Value
Accumulated
Other
Comprehensive Income (Loss)
Accumulated
Deficit
Total
Stockholders’
Equity
Balance at December 31, 2019176,505  $17  $3,271,097  $(1,005) $(1,864,718) $1,405,391  
Shares issued under equity compensation plans1,358  —  11,347  —  —  11,347  
Stock-based compensation—  —  24,211  —  —  24,211  
Comprehensive loss—  —  —  (5,872) (138,651) (144,523) 
Balance at March 31, 2020177,863  17  3,306,655  (6,877) (2,003,369) 1,296,426  
Shares issued under equity compensation plans947  1  7,825  —  —  7,826  
Stock-based compensation—  —  24,396  —  —  24,396  
Comprehensive income (loss)—  —  —  7,592  (80,000) (72,408) 
Balance at June 30, 2020178,810  $18  $3,338,876  $715  $(2,083,369) $1,256,240  

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

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NEKTAR THERAPEUTICS
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In thousands)
(Unaudited)
Six months ended June 30,
20202019
Cash flows from operating activities:
Net loss$(218,651) $(229,918) 
Adjustments to reconcile net loss to net cash used in operating activities:
Non-cash royalty revenue related to sale of future royalties(17,579) (17,321) 
Non-cash interest expense on liability related to sale of future royalties13,659  12,040  
Stock-based compensation48,607  49,907  
Depreciation and amortization7,692  6,132  
Impairment of advance payments to contract manufacturers and equipment for terminated program20,351    
Accretion of premiums (discounts), net and other non-cash transactions(782) (6,329) 
Changes in operating assets and liabilities:
Accounts receivable(10,443) 5,914  
Inventory81  (1,807) 
Operating leases, net4,245  8,415  
Other assets(27,214) 15,818  
Accounts payable425  3,480  
Accrued compensation12,469  9,773  
Other accrued expenses8,952  15,794  
Deferred revenue(3,790) (6,715) 
Net cash used in operating activities(161,978) (134,817) 
Cash flows from investing activities:
Purchases of investments(543,631) (603,702) 
Maturities of investments860,330  634,145  
Sales of investments41,700    
Purchases of property, plant and equipment(3,594) (17,291) 
Net cash provided by investing activities354,805  13,152  
Cash flows from financing activities:
Proceeds from shares issued under equity compensation plans19,120  12,200  
Repayment of senior notes(250,000)   
Net cash provided by (used in) financing activities(230,880) 12,200  
Effect of foreign exchange rates on cash and cash equivalents(104) (16) 
Net decrease in cash and cash equivalents(38,157) (109,481) 
Cash and cash equivalents at beginning of period96,363  194,905  
Cash and cash equivalents at end of period$58,206  $85,424  
Supplemental disclosures of cash flow information:
Cash paid for interest$9,742  $9,455  
Operating lease right-of-use asset recognized in exchange for lease liabilities$2,133  $1,289  
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.
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NEKTAR THERAPEUTICS
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
June 30, 2020
(Unaudited)
Note 1 — Organization and Summary of Significant Accounting Policies
Organization
We are a research-based biopharmaceutical company headquartered in San Francisco, California and incorporated in Delaware. We are developing a pipeline of drug candidates that utilize our advanced polymer conjugate technology platforms, which are designed to enable the development of new molecular entities that target known mechanisms of action. Our research and development pipeline of new investigational drugs includes investigational treatments for cancer and autoimmune disease.
Our research and development activities have required significant ongoing investment to date and are expected to continue to require significant investment. As a result, we expect to continue to incur substantial losses and negative cash flows from operations in the future. We have financed our operations primarily through cash generated from licensing, collaboration and manufacturing agreements and financing transactions. At June 30, 2020, we had approximately $1.2 billion in cash and investments in marketable securities. On April 13, 2020, we repaid the principal and accrued interest of our senior notes totaling $254.8 million, as described further below.
Basis of Presentation and Principles of Consolidation
Our consolidated financial statements include the financial position, results of operations and cash flows of our wholly-owned subsidiaries: Inheris Biopharma, Inc. (Inheris), Nektar Therapeutics (India) Private Limited (Nektar India) and Nektar Therapeutics UK Limited. We have eliminated all intercompany accounts and transactions in consolidation.
We prepared our Condensed Consolidated Financial Statements following the requirements of the Securities and Exchange Commission (SEC) for interim reporting. As permitted under those rules, we may condense or omit certain footnotes or other financial information that are normally required by U.S. generally accepted accounting principles (GAAP) for annual periods. In the opinion of management, these financial statements include all normal and recurring adjustments that we consider necessary for the fair presentation of our financial position and operating results.
Our Condensed Consolidated Financial Statements are denominated in U.S. dollars. Accordingly, changes in exchange rates between the applicable foreign currency and the U.S. dollar will affect the translation of each foreign subsidiary’s financial results into U.S. dollars for purposes of reporting our consolidated financial results. We include translation gains and losses in accumulated other comprehensive income (loss) in the stockholders’ equity section of our Condensed Consolidated Balance Sheets. To date, such cumulative currency translation adjustments have not been significant to our consolidated financial position.
Our comprehensive loss consists of our net loss plus our foreign currency translation gains and losses and unrealized holding gains and losses on available-for-sale securities. There were no significant reclassifications out of accumulated other comprehensive income (loss) to the statements of operations during the three and six months ended June 30, 2020 and 2019.
The accompanying Condensed Consolidated Financial Statements are unaudited. The Condensed Consolidated Balance Sheet data as of December 31, 2019 was derived from the audited consolidated financial statements which are included in our Annual Report on Form 10-K for the year ended December 31, 2019 filed with the SEC on February 28, 2020. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the consolidated financial statements and the accompanying notes to those financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2019.
Revenue, expenses, assets, and liabilities can vary during each quarter of the year. The results and trends in these interim Condensed Consolidated Financial Statements are not necessarily indicative of the results to be expected for the full year or any other period.
Use of Estimates
The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Accounting estimates and assumptions are inherently uncertain.
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The full extent to which the COVID-19 pandemic will directly or indirectly impact our business, results of operations and financial condition, including sales, expenses, reserves and allowances, manufacturing, clinical trials, research and development costs and employee-related amounts, will depend on future developments that are highly uncertain, including as a result of new information that may emerge concerning the COVID-19 pandemic and the actions taken to contain it or treat COVID-19, as well as the economic impact on local, regional, national and international customers and markets. We consider the effects of the COVID-19 pandemic in developing our estimates.
Actual results could differ materially from those estimates and assumptions. As appropriate, we assess our estimates each period, update them to reflect current information and generally recognize any changes in such estimates in the period first identified.
Reclassifications
In December 2019, the FASB issued ASU 2019-12 - Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes (ASU 2019-12). ASU 2019-12 created an exception to the incremental approach for intraperiod tax allocation when there is a loss from continuing operations and income or a gain from other items (for example, discontinued operations or other comprehensive income). Under the historical guidance, in this situation, an entity would record an income tax provision from other items, such as unrealized gains on available-for-sale securities reported in other comprehensive income, with an offsetting income tax benefit in continuing operations. Under ASU 2019-12, an entity would record no income tax provision. We elected to adopt ASU 2019-12 effective January 1, 2019 on a prospective basis in accordance with the guidance. Because we reported a net loss and unrealized gains on available-for-sale securities during 2019 and accordingly recorded a tax provision pursuant to the legacy guidance, we have recast such results from previously reported amounts. As a result, we eliminated the tax benefit in continuing operations and tax provision in other comprehensive income (loss), which totaled $0.4 million and $1.5 million for three and six months ended June 30, 2019.
Additionally, certain items previously reported in specific financial statement captions have been reclassified to conform to the current period presentation. Such reclassifications do not materially impact previously reported revenue, operating loss, net loss, total assets, liabilities or stockholders’ equity.

Segment Information
We operate in one business segment which focuses on applying our technology platform to develop novel drug candidates. Our business offerings have similar economics and other characteristics, including the nature of products and manufacturing processes, types of customers, distribution methods and regulatory environment. We are comprehensively managed as one business segment by our Chief Executive Officer.
Significant Concentrations
Our customers are primarily pharmaceutical and biotechnology companies that are located in the U.S. and Europe and with whom we have multi-year arrangements. Our accounts receivable balance contains billed and unbilled trade receivables from product sales, milestones (to the extent that they have been achieved and are due from the counterparty), other contingent payments and royalties, as well as reimbursable costs from collaborative research and development agreements. As of June 30, 2020, our accounts receivable includes $13.3 million under customer contracts from our collaboration partners and $33.9 million for unbilled net expense reimbursements from our collaboration partner Bristol-Myers Squibb Company (BMS). As of June 30, 2020, we also recorded a contract asset of $25.0 million, which we report in other current assets on our Condensed Consolidated Balance Sheet, from our collaboration partner BMS for the first patient, first visit for the registrational adjuvant melanoma trial (see Note 6 for additional information). As of December 31, 2019, our accounts receivable included $12.8 million from customer contracts and $24.0 million for unbilled net expense reimbursements from BMS. We generally do not require collateral from our customers. We perform a regular review of our customers’ credit risk and payment histories, including payments made after period end. Historically, we have not experienced credit losses from our accounts receivable. We have not recorded a reserve for credit losses at June 30, 2020 or December 31, 2019.
We are dependent on our suppliers and contract manufacturers to provide raw materials and drugs of appropriate quality and reliability and to meet applicable contract and regulatory requirements. In certain cases, we rely on single sources of supply of one or more critical materials. Consequently, in the event that supplies are delayed or interrupted for any reason, our ability to develop and produce our drug candidates or our ability to meet our supply obligations could be significantly impaired, which could have a material adverse effect on our business, financial condition and results of operations.
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For our available-for-sale securities, we have significant concentrations of issuers in the banking and financial services, automotive and food and beverage industries. While our investment policy requires that we only invest in highly-rated securities and limit our exposure to any single issuer, the COVID-19 pandemic may materially affect the financial conditions of issuers. Additionally, pursuant to our investment policy, we may sell securities before maturity if the issuer’s credit rating has been downgraded below our minimum credit rating requirements, which may result in a loss on the sale. As a result of the COVID-19 pandemic, we have begun to see an increase in credit downgrades for certain of our securities. Accordingly, if the COVID-19 pandemic or other factors result in downgrades below our minimum credit rating requirements and if we decide to sell these securities, we may experience losses on such sales.
Senior Secured Notes
On October 5, 2015, we completed the sale and issuance of $250.0 million in aggregate principal amount of 7.75% senior secured notes due 2020 (the Notes). The Notes were secured by a first-priority lien on substantially all of our assets (except our right-of-use assets) and bore interest at a rate of 7.75% per annum payable in cash quarterly in arrears on January 15, April 15, July 15, and October 15 of each year. Interest was calculated based on actual days outstanding over a 360 days year. The Notes were to mature on October 5, 2020, at which time the outstanding principal would be due and payable.
On April 13, 2020, we redeemed the Notes at par and therefore repaid the principal of $250.0 million and accrued interest of $4.8 million. As a result of the redemption and repayment, the liens discussed above were terminated.
Collaborative Arrangements
We enter into collaboration arrangements with pharmaceutical and biotechnology collaboration partners, under which we may grant licenses to our collaboration partners to further develop and commercialize one of our proprietary drug candidates, either alone or in combination with the collaboration partners’ compounds, or grant licenses to partners to use our technology to research and develop their own proprietary drug candidates. We may also perform research, development, manufacturing and supply activities under our collaboration agreements. Consideration under these contracts may include an upfront payment, development and regulatory milestones and other contingent payments, expense reimbursements, royalties based on net sales of approved drugs, and commercial sales milestone payments. Additionally, these contracts may provide options for the customer to purchase our proprietary PEGylation materials, drug candidates or additional contract research and development services under separate contracts.
When we enter into collaboration agreements, we assess whether the arrangements fall within the scope of ASC 808, Collaborative Arrangements (ASC 808) based on whether the arrangements involve joint operating activities and whether both parties have active participation in the arrangement and are exposed to significant risks and rewards of the arrangement. To the extent that the arrangement falls within the scope of ASC 808, we assess whether the payments between us and our collaboration partner fall within the scope of other accounting literature. If we conclude that payments from the collaboration partner to us represent consideration from a customer, such as license fees and contract research and development activities, we account for those payments within the scope of ASC 606, Revenue from Contracts with Customers (ASC 606). However, if we conclude that our collaboration partner is not a customer for certain activities and associated payments, such as for certain collaborative research, development, manufacturing and commercial activities, we present such payments as a reduction of research and development expense or general and administrative expense, based on where we present the underlying expense.
Revenue Recognition
For elements of those arrangements that we determine should be accounted for under ASC 606, we assess which activities in our collaboration agreements are performance obligations that should be accounted for separately and determine the transaction price of the arrangement, which includes the assessment of the probability of achievement of future milestones and other potential consideration. For arrangements that include multiple performance obligations, such as granting a license or performing contract research and development activities or participation on joint steering or other committees, we allocate upfront and milestone payments under a relative standalone selling price method. Accordingly, we develop assumptions that require judgment to determine the standalone selling price for each performance obligation identified in the contract. These key assumptions may include revenue forecasts, clinical development timelines and costs, discount rates and probabilities of clinical and regulatory success.
Product Sales
Product sales are primarily derived from manufacturing and supply agreements with our customers. We have assessed our current manufacturing and supply arrangements and have generally determined that they provide the customer an option to
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purchase our proprietary PEGylation materials. Accordingly, we treat each purchase order as a discrete exercise of the customer’s option (i.e. a separate contract) rather than as a component of the overall arrangement. The pricing for the manufacturing and supply is generally at a fixed price and may be subject to annual producer price index (PPI) adjustments. We invoice and recognize product sales when title and risk of loss pass to the customer, which generally occurs upon shipment. Customer payments are generally due 30 days from receipt of invoice. We test our products for adherence to technical specifications before shipment; accordingly, we have not experienced any significant returns from our customers.
Royalty Revenue
Generally, we are entitled to royalties from our collaboration partners based on the net sales of their approved drugs that are marketed and sold in one or more countries where we hold royalty rights. For arrangements that include sales-based royalties, including commercial milestone payments based on the level of sales, we have concluded that the license is the predominant item to which the royalties relate. Accordingly, we recognize royalty revenue, including for our non-cash royalties, when the underlying sales occur based on our best estimates of sales of the drugs. Our partners generally pay royalties or commercial milestones after the end of the calendar quarter in accordance with contractual terms. We present commercial milestone payments within license, collaboration and other revenue.
License, Collaboration and other Revenue
License Grants: For collaboration arrangements that include a grant of a license to our intellectual property, we consider whether the license grant is distinct from the other performance obligations included in the arrangement. Generally, we would conclude that the license is distinct if the customer is able to benefit from the license with the resources available to it. For licenses that are distinct, we recognize revenues from nonrefundable, upfront payments and other consideration allocated to the license when the license term has begun and we have provided all necessary information regarding the underlying intellectual property to the customer, which generally occurs at or near the inception of the arrangement.
Milestone Payments: At the inception of the arrangement and at each reporting date thereafter, we assess whether we should include any milestone payments or other forms of variable consideration in the transaction price, based on whether a significant reversal of revenue previously recognized is not probable upon resolution of the uncertainty. Since milestone payments may become payable to us upon the initiation of a clinical study, filing for or receipt of regulatory approval or the first commercial sale of a product, we review the relevant facts and circumstances to determine when we should update the transaction price, which may occur before the triggering event. When we do update the transaction price for milestone payments, we allocate it on a relative standalone selling price basis and record revenue on a cumulative catch-up basis, which results in recognizing revenue for previously satisfied performance obligations in such period. If we update the transaction price before the triggering event, we recognize the increase in the transaction price as a contract asset. Our partners generally pay development milestones subsequent to achievement of the triggering event.
Research and Development Services: For amounts allocated to our research and development obligations in a collaboration arrangement, we recognize revenue over time using a proportional performance model, representing the transfer of goods or services as we perform activities over the term of the agreement.
Research and Development Expense
Research and development costs are expensed as incurred and include salaries, benefits and other operating costs such as outside services, supplies and allocated overhead costs. We perform research and development for our proprietary drug candidates and technology development and for certain third parties under collaboration agreements. For our proprietary drug candidates and our internal technology development programs, we invest our own funds without reimbursement from a third party. Where we perform research and development activities under a joint development collaboration, such as our collaboration with BMS, we record the cost reimbursement from our partner as a reduction to research and development expense when reimbursement amounts are due to us under the agreement.
We record an accrued expense for the estimated costs of our clinical trial activities performed by third parties. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows to our vendors. Payments under the contracts depend on factors such as the achievement of certain events, successful enrollment of patients, and completion of certain clinical trial activities. We generally accrue costs associated with the start-up and reporting phases of the clinical trials ratably over the estimated duration of the start-up and reporting phases. We generally accrue costs associated with the treatment phase of clinical trials based on the estimated activities performed by our third parties. We may also accrue expenses based on the total estimated cost of the treatment phase on a per patient basis and expense the per patient cost ratably over the estimated patient treatment period based on patient enrollment in the trials. In specific circumstances,
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such as for certain time-based costs, we recognize clinical trial expenses using a methodology that we consider to be more reflective of the timing of costs incurred.
We record an accrued expense for the estimated costs of our contract manufacturing activities performed by third parties. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment flows to our vendors. Payments under the contracts include upfront payments and milestone payments, which depend on factors such as the achievement of the completion of certain stages of the manufacturing process. For purposes of recognizing expense, we assess whether we consider the production process is sufficiently defined such that the resulting product can be considered the delivery of a good, as evidenced by predictive or contractually required yields in the production process or payment terms based on the actual yield, or the delivery of a service, where processes and yields are developing and less certain. If we consider the process to be the delivery of a good, we recognize expense when the drug product is delivered, or we otherwise bear risk of loss. If we consider the process to be the delivery of a service, we recognize expense based on our best estimates of the contract manufacturer’s progress towards completion of the stages in the contracts. We recognize and amortize upfront payments and accrue liabilities based on the specific terms of each arrangement. Certain arrangements may provide upfront payments for certain stages of the arrangement and milestone payments for the completion of certain stages, and, accordingly, we may record advance payments for services that have not been completed or goods not delivered and liabilities for stages where the contract manufacturer is entitled to a milestone payment.
We capitalize advance payments for goods or services that will be used or rendered for future research and development activities and recognize expense as the related goods are delivered or services performed. We base our estimates on the best information available at the time. However, additional information may become available to us which may allow us to make a more accurate estimate in future periods. In this event, we may be required to record adjustments to research and development expenses in future periods when the actual level of activity becomes more certain. We generally consider such increases or decreases in cost as changes in estimates and reflect them in research and development expenses in the period identified.
Impairment of Assets and Other Costs for Terminated Program
On January 14, 2020, the joint FDA Anesthetic Drug Products Advisory Committee and Drug Safety and Risk Management Committee did not recommend approval of our NDA for NKTR-181. As a result, we withdrew our NDA and decided to make no further investments in this program. On February 26, 2020, the Audit Committee of our Board of Directors approved management’s plan for the wind-down of Inheris and the NKTR-181 program.
As a result, in the three months ended March 31, 2020, we wrote off $19.7 million of advance payments to contract manufacturers for commercial batches of NKTR-181. We also incurred $25.5 million of additional costs, primarily for non-cancellable commitments to our contract manufacturers and certain severance costs. We present these costs in the Impairment of assets and other costs for terminated program line in our Condensed Consolidated Statement of Operations. We did not incur any substantial costs related to the wind-down of Inheris and the NKTR-181 program in the three months ended June 30, 2020.
Income Taxes
For the three and six months ended June 30, 2020 and 2019, our income tax expense primarily results from taxable income in our Nektar India subsidiary. We have fully reserved our U.S. federal deferred tax assets generated from our net operating losses, as we believe it is not more likely than not that the benefit will be realized.
Coronavirus Aid, Relief and Economic Security Act
In March 2020, the U.S. government enacted the Coronavirus Aid, Relief, and Economic Security Act, or CARES Act, which includes modifications to the limitation on business interest expense and net operating loss provisions and provides a payment delay of employer payroll taxes during 2020 after the date of enactment. We do not expect that the CARES Act will have a material effect on our results of operations or financial position.

Recently Adopted Accounting Pronouncements
On January 1, 2020, we adopted Accounting Standards Update 2018-18: Clarifying the Interaction between Topic 808 and Topic 606 (ASU 2018-18). The guidance clarifies that certain transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606 when the collaborative arrangement participant is a customer for a promised good or service that is distinct within the collaborative arrangement. The guidance also precludes entities from presenting amounts related to transactions with a collaborative arrangement participant that is not a customer as revenue, unless those transactions are directly related to third-party sales. ASU 2018-18 is applied retrospectively to January 1, 2018, when we adopted ASC 606. Our adoption of ASU 2018-18 did not materially affect our revenue recognition.
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On January 1, 2020, we adopted ASU 2016-13: Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The guidance modifies the measurement and recognition of credit losses for most financial assets and certain other instruments. The amendment updates the guidance for measuring and recording credit losses on financial assets measured at amortized cost by replacing the “incurred loss” model with an “expected loss” model. As a result of adoption, we present these financial assets, which include our accounts receivable and available-for-sale debt securities, at the net amount we expect to collect. The amendment also requires that we record credit losses related to available-for-sale debt securities as an allowance through net income rather than reducing the carrying amount under the historical, other-than-temporary-impairment model. Our adoption of ASU 2016-13 did not materially affect our Condensed Consolidated Financial Statements.
Note 2 — Cash and Investments in Marketable Securities
Cash and investments in marketable securities, including cash equivalents, are as follows (in thousands):
Estimated Fair Value at
June 30, 2020December 31, 2019
Cash and cash equivalents$58,206  $96,363  
Short-term investments980,191  1,228,499  
Long-term investments172,166  279,119  
Total cash and investments in marketable securities$1,210,563  $1,603,981  
We invest in liquid, high quality debt securities. Our investments in debt securities are subject to interest rate risk. To minimize the exposure due to an adverse shift in interest rates, we invest in securities with maturities of two years or less and maintain a weighted average maturity of one year or less. As of June 30, 2020 and December 31, 2019, all of our long-term investments had maturities between one and two years.
During the three and six months ended June 30, 2020, we sold available-for-sale securities totaling $41.7 million. Gross realized gains and losses on those sales were not significant. During the three and six months ended June 30, 2019, we did not sell any of our available-for-sale securities. The cost of securities sold is based on the specific identification method.
We report our accrued interest receivable, which totaled $6.1 million and $6.5 million at June 30, 2020 and December 31, 2019, respectively, in other current assets on our Condensed Consolidated Balance Sheets.
Our portfolio of cash and investments in marketable securities includes (in thousands):
June 30, 2020December 31, 2019
Fair Value
Hierarchy
Level
Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueFair Value
Corporate notes and bonds2$893,901  $4,095  $(143) $897,853  $1,132,182  
Corporate commercial paper2235,811  475  (26) 236,260  375,473  
Obligations of U.S. government agencies29,995    (1) 9,994    
Available-for-sale investments$1,139,707  $4,570  $(170) $1,144,107  $1,507,655  
Money market funds152,135  83,546  
Certificates of depositN/A8,250  6,951  
CashN/A6,071  5,829  
Total cash and investments in marketable securities$1,210,563  $1,603,981  

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 for identical or similar assets or liabilities 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.
        
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        We use a market approach to value our Level 2 investments. The disclosed fair value related to our investments is based on market prices from a variety of industry standard data providers and generally represents quoted prices for similar assets in active markets or has been derived from observable market data.
        
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.
At December 31, 2019, our gross unrealized gains and losses totaled $2.1 million and $0.3 million, respectively.
Note 3 — Inventory
Inventory consists of the following (in thousands):
June 30, 2020December 31, 2019
Raw materials$1,681  $1,673  
Work-in-process8,555  8,267  
Finished goods2,348  2,725  
Total inventory$12,584  $12,665  
We manufacture finished goods inventory upon receipt of firm purchase orders, and we may manufacture certain intermediate work-in-process materials and purchase raw materials based on purchase forecasts from our collaboration partners. We include direct materials, direct labor, and manufacturing overhead in inventory and determine cost on a first-in, first-out basis for raw materials and on a specific identification basis for work-in-process and finished goods. We value inventory at the lower of cost or net realizable value, and we write down defective or excess inventory to net realizable value based on historical experience or projected usage. We expense inventory related to our research and development activities as manufactured by us or when purchased.
Note 4 — Liability Related to Sale of Future Royalties
On February 24, 2012, we entered into a Purchase and Sale Agreement (the Purchase and Sale Agreement) with RPI Finance Trust (RPI), an affiliate of Royalty Pharma, pursuant to which we sold, and RPI purchased, our right to receive royalty payments (the Royalty Entitlement) arising from the worldwide net sales, from and after January 1, 2012, of (a) CIMZIA®, under our license, manufacturing and supply agreement with UCB Pharma (UCB), and (b) MIRCERA®, under our license, manufacturing and supply agreement with F. Hoffmann-La Roche Ltd and Hoffmann-La Roche Inc. (together referred to as Roche). We received aggregate cash proceeds of $124.0 million for the Royalty Entitlement. As part of this sale, we incurred approximately $4.4 million in transaction costs, which are amortized to interest expense over the estimated life of the Purchase and Sale Agreement. Although we sold all of our rights to receive royalties from the CIMZIA® and MIRCERA® products, as a result of our ongoing manufacturing and supply obligations related to the generation of these royalties, we continue to account for these royalties as revenue. We recorded the $124.0 million in proceeds from this transaction as a liability (Royalty Obligation) that is amortized using the interest method over the estimated life of the Purchase and Sale Agreement as royalties from the CIMZIA® and MIRCERA® products are remitted directly to RPI. During the six months ended June 30, 2020 and 2019, we recognized $17.6 million and $17.3 million, respectively, in non-cash royalty revenue from net sales of CIMZIA® and MIRCERA®, and we recorded $13.7 million and $12.0 million, respectively, of related non-cash interest expense.
We periodically assess the estimated royalty payments to RPI from UCB and Roche, and, to the extent such payments are greater or less than our initial estimates or the timing of such payments is materially different from our original estimates, we will prospectively adjust the amortization of the Royalty Obligation. From inception through 2017, our estimate of the total interest expense on the Royalty Obligation resulted in an effective annual interest rate of approximately 17%. During the three months ended December 31, 2017, our estimate of the effective annual interest rate over the life of the agreement increased to 17.6%, which resulted in a prospective interest rate of approximately 21%. During the three months ended December 31, 2018, primarily as a result of increases in the forecasted sales of MIRCERA®, our estimate of the effective annual interest rate over the life of the agreement increased to 18.7%, which results in a prospective interest rate of 29%. During the three month period ended December 31, 2019, primarily as a result of increases in the forecasted sales of CIMZIA® and MIRCERA®, our estimate of the effective annual interest rate over the life of the agreement increased to 19.5%, which results in a prospective interest rate of 38%. This rate remains unchanged for the three and six months ended June 30, 2020.
The Purchase and Sale Agreement grants RPI the right to receive certain reports and other information relating to the Royalty Entitlement and contains other representations and warranties, covenants and indemnification obligations (often with time
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limitations) that are customary for a transaction of this nature. For example, we provided representations and warranties concerning intellectual property matters in the Purchase and Sale Agreement; however, the time limitation we have to indemnify RPI with respect to any breach of these intellectual property-based representations and warranties has passed. To our knowledge, we are currently in compliance with these provisions of the Purchase and Sale Agreement; however, if we were to breach our obligations, we could be required to pay damages to RPI that are not limited to the purchase price we received in the sale transaction.
Note 5 — Commitments and Contingencies
Legal Matters
From time to time, we are involved in lawsuits, arbitrations, claims, investigations and proceedings, consisting of intellectual property, commercial, employment and other matters, which arise in the ordinary course of business. We make provisions for liabilities when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Such provisions are reviewed at least quarterly and adjusted to reflect the impact of settlement negotiations, judicial and administrative rulings, advice of legal counsel, and other information and events pertaining to a particular case. Litigation is inherently unpredictable. If any unfavorable ruling were to occur in any specific period, there exists the possibility of a material adverse impact on the results of our operations of that period and on our cash flows and liquidity.
On October 30, 2018, we and certain of our executives were named in a putative securities class action complaint filed in the U.S. District Court for the Northern District of California (U.S. District Court in California), which complaint was subsequently amended on May 15, 2019. Also, on February 13, 2019, and February 18, 2019, shareholder derivative complaints were filed in the U.S. District Court for the District of Delaware naming the CEO, CFO and certain members of Nektar’s board. These class action and shareholder derivative actions assert, among other things, that for a period beginning at least from November 11, 2017 through October 2, 2018, our stock was inflated due to alleged misrepresentations about the efficacy and safety of bempegaldesleukin. On July 13, 2020, the U.S. District Court in California Court granted Nektar’s motion to dismiss all claims in this securities class action filing, stating (among other things) that the amended complaint failed “to adequately allege that any of the statements … identified by Plaintiffs were false or misleading.” The plaintiffs in this matter have 28 days from July 13, 2020, to file another amended complaint.
In addition, on August 19, 2019, we and certain of our executives were named in a putative securities class action complaint filed in U.S. District Court in California, which complaint was subsequently amended on January 24, 2020. Also, on February 11, 2020, and on February 20, 2020, shareholder derivative complaints were filed in U.S. District Court in California naming the CEO, CFO and certain members of Nektar’s board, which derivative complaints were consolidated and subsequently amended on July 1, 2020. The class action and shareholder derivative complaints assert, among other things, that for a period between February 15, 2019 and August 8, 2019, inclusive, our stock was inflated due to an alleged failure to disclose a reduction in the planned number of bempegaldesleukin clinical trials and a bempegaldesleukin manufacturing issue.
All of the securities class action lawsuits and derivative complaints are in the early stages. Accordingly, we cannot reasonably estimate a potential future loss or a range of potential future losses. However, an unfavorable resolution could potentially have a material adverse effect on our business, financial condition, and results of operations or prospects, and potentially result in paying monetary damages. We have recorded no liability for these matters in our Condensed Consolidated Balance Sheets at either June 30, 2020 or December 31, 2019.
Indemnifications in Connection with Commercial Agreements
As part of our collaboration agreements with our partners related to the license, development, manufacture and supply of drugs and PEGylation materials based on our proprietary technologies and drug candidates, we generally agree to defend, indemnify and hold harmless our partners from and against third party liabilities arising out of the agreement, including product liability (with respect to our activities) and infringement of intellectual property to the extent the intellectual property is developed by us and licensed to our partners. The term of these indemnification obligations is generally perpetual any time after execution of the agreement. There is generally no limitation on the potential amount of future payments we could be required to make under these indemnification obligations.
From time to time, we enter into other strategic agreements such as divestitures and financing transactions pursuant to which we are required to make representations and warranties and undertake to perform or comply with certain covenants, including our obligation to RPI described in Note 4. In the event it is determined that we breached certain of the representations and warranties or covenants made by us in any such agreements, we could incur substantial indemnification liabilities depending on the timing, nature, and amount of any such claims.
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To date, we have not incurred costs to defend lawsuits or settle claims related to these indemnification obligations, representations or warranties. Because the aggregate amount of any potential indemnification obligation is not a stated amount, we cannot reasonably estimate the overall maximum amount of any such obligations. We have recorded no liabilities for these obligations in our Condensed Consolidated Balance Sheets at either June 30, 2020 or December 31, 2019.
Note 6 — License and Collaboration Agreements
We have entered into various collaboration agreements including license agreements and collaborative research, development and commercialization agreements with various pharmaceutical and biotechnology companies. Under these collaboration arrangements, we are entitled to receive license fees, upfront payments, milestone and other contingent payments, royalties, sales milestone payments, and payments for the manufacture and supply of our proprietary PEGylation materials and/or reimbursement for research and development activities. We generally include our costs of performing these services in research and development expense, except for costs for product sales to our collaboration partners which we include in cost of goods sold. We analyze our agreements to determine whether we should account for the agreements within the scope of ASC 808, and, if so, we analyze whether we should account for any elements under ASC 606.
In accordance with our collaboration agreements, we recognized license, collaboration and other revenue as follows (in thousands):
Three months ended June 30,Six months ended June 30,
Partner
Drug or Drug Candidate
2020201920202019
Bristol-Myers Squibb Company
Bempegaldesleukin$25,000  $  $50,000  $  
Eli Lilly and Company
NKTR-358
  1,200  1,259  3,700  
Amgen, Inc.
Neulasta®
1,250  1,250  2,500  2,500  
Other25  85  31  539  
License, collaboration and other revenue
$26,275  $2,535  $53,790  $6,739  
During the three and six months ended June 30, 2020, we recognized $42.1 million and $86.7 million, respectively, of revenue for performance obligations that we had satisfied in prior periods. This amount includes all of our royalty revenue and non-cash royalty revenue, as well as $25.0 million and $50.0 million in BMS Collaboration milestones, respectively, as further described below.
The following table presents the changes in our deferred revenue balance from our collaboration agreements during the six months ended June 30, 2020 (in thousands):
Six Months Ended June 30, 2020
Deferred revenue—December 31, 2019$8,071  
Recognition of previously unearned revenue(3,790) 
Deferred revenue—June 30, 2020$4,281  
Our balance of deferred revenue contains the transaction price from our collaboration agreements allocated to performance obligations which are partially unsatisfied.
As of June 30, 2020, our collaboration agreements with partners included potential future payments for development and regulatory milestones totaling approximately $1.7 billion, including amounts from our agreements with BMS and Eli Lilly and Company described below. In addition, under our collaboration agreements we are entitled to receive contingent sales milestone payments, other contingent payments and royalty payments, as described below.
There have been no material changes to our collaboration agreements in the three and six months ended June 30, 2020, except as described below.
Bristol-Myers Squibb Company (BMS): Bempegaldesleukin, also referred to as NKTR-214
On February 13, 2018, we entered into a Strategic Collaboration Agreement (the BMS Collaboration Agreement) and a Share Purchase Agreement with BMS, both of which became effective on April 3, 2018. The agreement replaced the Clinical Trial Agreement we had entered into in September 2016. Pursuant to these current agreements, we and BMS are jointly developing bempegaldesleukin, including, without limitation, in combination with BMS’s Opdivo® (nivolumab) and Opdivo® plus Yervoy® (ipilimumab), and other compounds of BMS, us or any third party. The parties have agreed to jointly commercialize
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bempegaldesleukin on a worldwide basis. We retained the right to record all worldwide sales for bempegaldesleukin. We will share global commercialization profits and losses with BMS for bempegaldesleukin, with Nektar sharing 65% and BMS sharing 35% of the net profits and losses. The parties share the internal and external development costs for bempegaldesleukin in combination regimens based on each party’s relative ownership interest in the compounds included in the regimens. In accordance with the agreement, the parties share development costs for bempegaldesleukin in combination with Opdivo®, 67.5% of costs to BMS and 32.5% to Nektar, and for bempegaldesleukin in a triplet combination with Opdivo® and Yervoy® 78% of costs to BMS and 22% to Nektar. The parties share costs for the manufacturing of bempegaldesleukin, 35% of costs to BMS and 65% to Nektar.
Upon the effective date of the BMS Collaboration Agreement in April 2018, BMS paid us a non-refundable upfront cash payment of $1.0 billion. We are eligible to receive additional cash payments up to a total of approximately $1.455 billion (including the milestones from Amendment No. 1 described below) upon the achievement of certain development and regulatory milestones, of which we have received $25.0 million in March 2020 for the achievement of the first patient, first visit in the registrational muscle-invasive bladder cancer trial, and up to a total of $350.0 million upon the achievement of certain sales milestones. In April 2018, BMS also purchased 8,284,600 shares of our common stock pursuant to the Share Purchase Agreement for total additional cash consideration of $850.0 million.
On January 9, 2020, we and BMS entered into Amendment No. 1 (the Amendment) to the BMS Collaboration Agreement. Pursuant to the Amendment, we and BMS agreed to update the Collaboration Development Plan under which we are collaborating and developing bempegaldesleukin. The cost sharing under the Amendment remains unchanged. Additionally, we are eligible to receive an additional non-refundable, non-creditable milestone payment of $25.0 million following the achievement of the first patient, first visit in the registrational adjuvant melanoma trial, studying the combination of bempegaldesleukin and Opdivo®. We are also eligible to receive non-refundable, creditable milestone payments of $25.0 million and $75.0 million following the achievement of the first patient, first visit in a registrational muscle-invasive bladder cancer trial and a registrational first-line non-small-cell lung cancer trial, respectively, in each case studying the combination of bempegaldesleukin and Opdivo®. For the two creditable milestones, BMS is entitled to deduct the amounts paid pursuant to these milestones from future development milestones due to us under the original agreement. On January 30, 2020, the milestone for the first patient, first visit in the registrational muscle-invasive bladder cancer trial was achieved, and BMS paid us the $25.0 million milestone in March 2020. On July 27, 2020, the milestone for the first patient, first visit in the registrational adjuvant melanoma trial was achieved.
We determined that the BMS Collaboration Agreement falls within the scope of ASC 808, and we analogized to ASC 606 for the accounting for our performance obligation of the delivery of the licenses to develop and commercialize bempegaldesleukin.
During 2018, we aggregated the total consideration of $1.85 billion received under the agreements and allocated it between the stock purchase and the revenue-generating elements, because we and BMS negotiated the agreements together and the effective date of the BMS Collaboration Agreement was dependent upon the effective date of the Share Purchase Agreement. We recorded the estimated fair value of the shares of $790.2 million in stockholders’ equity. We allocated the remaining $1,059.8 million to the transaction price of the collaboration agreement, which we recognized in 2018. We consider the future potential development, regulatory and sales milestones of up to approximately $1.8 billion to be variable consideration.
During the three months ended March 31, 2020, we updated the transaction price by $25.0 million for the achievement of the first patient, first visit in the registrational muscle-invasive bladder cancer trial. During the three months ended June 30, 2020, we updated the transaction price by $25.0 million for the milestone for the first patient, first visit in the registrational adjuvant melanoma trial because we concluded that a reversal of the milestone was not probable. We achieved the first patient, first visit in the registrational adjuvant melanoma trial on July 27, 2020. Since we had already completed our sole performance obligation of delivery of the licenses, we recognized $25.0 million and $50.0 million in license, collaboration and other revenue during the three and six months ended June 30, 2020, respectively. We recognized the increase in the transaction price for the $25.0 million milestone for the first patient, first visit in the adjuvant melanoma trial as a contract asset, which we report within other current assets on our Condensed Consolidated Balance Sheet, since we had not achieved the triggering event as of June 30, 2020. We continue to exclude the other milestones from the transaction price as of June 30, 2020 due to the significant uncertainties involved with clinical development and regulatory approval. We re-evaluate the transaction price at each reporting period and as uncertain events are resolved or other changes in circumstances occur.
As mentioned above, BMS shares certain percentages of development costs incurred by us and we share certain percentages of development costs incurred by BMS. We consider these activities to represent collaborative activities under ASC 808, and we recognize such cost sharing proportionately with the performance of the underlying services. We recognize BMS’ reimbursement of our costs as a reduction of research and development expense and our reimbursement of BMS’ costs as research and development expense. During the three and six months ended June 30, 2020, we recorded $33.9 million and $65.1 million, respectively, as a reduction of research and development expense for BMS’ share of our expenses, net of our share of BMS’
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expenses. During the three and six months ended June 30, 2019, we recorded $24.6 million and $53.4 million, respectively, as a reduction of research and development expense for BMS’ share of our expenses, net of our share of BMS’ expenses. As of June 30, 2020, we have recorded an unbilled receivable of $33.9 million from BMS in accounts receivable in our Condensed Consolidated Balance Sheet.
Eli Lilly and Company (Lilly): NKTR-358
On July 23, 2017, we entered into a worldwide license agreement with Eli Lilly and Company (Lilly), which became effective on August 23, 2017, to co-develop NKTR-358, a novel immunological drug candidate that we invented. Under the terms of the agreement, we (i) received an initial payment of $150.0 million in September 2017 and are eligible for up to $250.0 million in additional development milestones, (ii) will co-develop NKTR-358 with Lilly, for which we were responsible for completing Phase 1 clinical development and are responsible for certain drug product development and supply activities, (iii) will share with Lilly Phase 2 development costs with 75% of those costs borne by Lilly and 25% of the costs borne by us, (iv) will have the option to contribute funding to Phase 3 development on an indication-by-indication basis ranging from zero to 25% of development costs, and (v) will have the opportunity to receive up to double-digit sales royalty rates that escalate based upon our Phase 3 development cost contribution and the level of annual global product sales. Lilly will be responsible for all costs of global commercialization, and we will have an option to co-promote in the U.S. under certain conditions. A portion of the development milestones may be reduced by 50% under certain conditions, related to the final formulation of the approved product and the timing of prior approval (if any) of competitive products with a similar mechanism of action, which could reduce these milestone payments by 75% if both conditions occur.
The agreement will continue until Lilly no longer has any royalty payment obligations or, if earlier, the termination of the agreement in accordance with its terms. The agreement may be terminated by Lilly for convenience, and may also be terminated under certain other circumstances, including material breach.
We identified our license grant to Lilly, our ongoing Phase 1 clinical development obligation and our drug product development obligation as the significant performance obligations in the arrangement. The valuation of each performance obligation involves significant estimates and assumptions, including but not limited to, expected market opportunity and pricing, assumed royalty rates, clinical trial costs, timelines and likelihood of success; in each case these estimates and assumptions covering long time periods. We determined the selling price for the license based on a discounted cash flow analysis of projected revenues from NKTR-358 and development and commercial costs using a discount rate based on a market participant’s weighted-average cost of capital adjusted for forecasting risk. We determined the selling prices for our Phase 1 clinical development and drug product development deliverables based on the nature of the services to be performed and estimates of the associated efforts and third-party rates for similar services.
Although we are entitled to significant development milestones under this arrangement, through June 30, 2020, we have excluded such milestones from the transaction price due to the significant uncertainties involved with clinical development. We have therefore determined the transaction price to consist of the upfront payment of $150.0 million in September 2017. Based on our estimates of the standalone selling prices of the performance obligations, we allocated the $150.0 million upfront payment as $125.9 million to the license, $17.6 million to our portion of the Phase 1 clinical development and $6.5 million to the drug product development.
We recognized the $125.9 million of revenue allocated to the license upon the effective date of the license agreement in August 2017, since we determined that the license was a right to use our intellectual property, for which, as of the effective date, we had provided all necessary information to Lilly to benefit from the license and the license term had begun. We recognized revenue for our portion of the Phase 1 clinical development and drug product development using an input method, using costs incurred, as this method depicts our progress towards providing Lilly with the results of clinical trials and drug production processes. As of June 30, 2020, we completed our performance obligations and we have no deferred revenue related to this agreement.
Baxalta Inc. / Takeda Pharmaceutical Company Ltd: Hemophilia
We are a party to an exclusive research, development, license and manufacturing and supply agreement with Baxalta Inc. (Baxalta), a subsidiary of Takeda Pharmaceutical Company Ltd. (Takeda), entered into in September 2005 to develop products designed to improve therapies for Hemophilia A patients using our PEGylation technology. Under the terms of the agreement, we are entitled to research and development funding for our active programs, which are now complete for Factor VIII, and are responsible for supplying Takeda with its requirements for our proprietary materials. Takeda is responsible for all clinical development, regulatory, and commercialization expenses. The agreement is terminable by the parties under customary conditions.
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This Hemophilia A program includes ADYNOVATE®, which was approved by the United States Food and Drug Administration (FDA) in November 2015 for use in adults and adolescents, aged 12 years and older, who have Hemophilia A, and is now marketed in the U.S., the European Union, and many other countries. As a result of the marketing authorization in the EU in January 2018, we earned a $10.0 million development milestone, which we received in March 2018. During 2018, we earned an additional $10.0 million milestone for annual sales of ADYNOVATE®/ ADYNOVI reaching a certain specified amount. In addition, we are entitled to an additional sales milestone upon achievement of an annual worldwide net sales target and royalties based on worldwide net sales of products resulting from this agreement.
In October 2017, we entered into a right to sublicense agreement with Baxalta, under which we granted to Baxalta the right to grant a nonexclusive sublicense to certain patents that were previously exclusively licensed to Baxalta under our 2005 agreement. Under the right to sublicense agreement, Baxalta paid us $12.0 million in November 2017 and agreed to pay us single digit royalty payments based upon net sales of the products covered under the sublicense throughout the term of the agreement.
Our remaining unsatisfied performance obligation consists of our ongoing supply of PEGylation materials at a price less than the standalone selling price of these materials. As of June 30, 2020, our deferred revenue from this arrangement is not significant.
Amgen, Inc.: Neulasta®
In October 2010, we amended and restated an existing supply and license agreement by entering into a supply, dedicated suite and manufacturing guarantee agreement (the Amended and Restated Agreement) and a lice