UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Form FORM 10-Q
(Mark One)
þQUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 20182019
ORor
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission file number File Number: 001-37702
Amgen Inc.
(Exact name of registrant as specified in its charter)
Delaware 95-3540776
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
  
One Amgen Center Drive
Thousand Oaks, California
 91320-1799
Thousand Oaks
California
(Address of principal executive offices) (Zip Code)
(805) (805) 447-1000
(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 valueAMGNThe NASDAQ Global Select Market
1.250% Senior Notes Due 2022AMGN22New York Stock Exchange
2.00% Senior Notes Due 2026AMGN26New York Stock Exchange
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or Section 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 þ No ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted 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 and post such files).Yes þ 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. (Check one):
Large accelerated filerþ
Accelerated filer¨
Non-accelerated filer¨
(Do not check if a smaller reporting company)
Smaller reporting company¨
Emerging growth company¨ 
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act)Yes ¨ No þ
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 in Rule 12b-2 of the Exchange Act).Yes
No 
As of July 18, 2018,24, 2019, the registrant had 647,272,067 599,701,222shares of common stock, $0.0001 par value, outstanding.




AMGEN INC.
INDEX
  Page No.
Item 1.
 
 
 
 
 
Item 2.
Item 3.
Item 4.
Item 1.
Item 1A.
Item 2.
Item 6.
SIGNATURES


i



PART I — FINANCIAL INFORMATION
Item 1.FINANCIAL STATEMENTS
AMGEN INC.
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(In millions, except per-share data)
(Unaudited)

Three months ended
June 30,
 Six months ended
June 30,
Three months ended
June 30,
 Six months ended
June 30,
2018 2017 2018 20172019 2018 2019 2018
Revenues:              
Product sales$5,679
 $5,574
 $11,022
 $10,773
$5,574
 $5,679
 $10,860
 $11,022
Other revenues380
 236
 591
 501
297
 380
 568
 591
Total revenues6,059
 5,810
 11,613
 11,274
5,871
 6,059
 11,428
 11,613
              
Operating expenses:              
Cost of sales1,024
 1,024
 1,968
 2,020
1,012
 1,024
 2,067
 1,968
Research and development869
 873
 1,629
 1,642
924
 869
 1,803
 1,629
Selling, general and administrative1,353
 1,209
 2,480
 2,273
1,260
 1,353
 2,414
 2,480
Other(19) 6
 (22) 50
(3) (19) (6) (22)
Total operating expenses3,227
 3,112
 6,055
 5,985
3,193
 3,227
 6,278
 6,055
              
Operating income2,832
 2,698
 5,558
 5,289
2,678
 2,832
 5,150
 5,558
              
Interest expense, net347
 321
 685
 647
332
 347
 675
 685
Interest and other income, net162
 165
 393
 360
218
 162
 403
 393
              
Income before income taxes2,647
 2,542
 5,266
 5,002
2,564
 2,647
 4,878
 5,266
              
Provision for income taxes351
 391
 659
 780
385
 351
 707
 659
              
Net income$2,296
 $2,151
 $4,607
 $4,222
$2,179
 $2,296
 $4,171
 $4,607
              
Earnings per share:              
Basic$3.50
 $2.93
 $6.76
 $5.74
$3.59
 $3.50
 $6.78
 $6.76
Diluted$3.48
 $2.91
 $6.73
 $5.71
$3.57
 $3.48
 $6.75
 $6.73
              
Shares used in calculation of earnings per share:              
Basic656
 734
 682
 736
607
 656
 615
 682
Diluted660
 738
 685
 740
610
 660
 618
 685
       
Dividends paid per share$1.32
 $1.15
 $2.64
 $2.30


See accompanying notes.


AMGEN INC.
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(In millions)
(Unaudited)

Three months ended
June 30,
 Six months ended
June 30,
Three months ended
June 30,
 Six months ended
June 30,
2018 2017 2018 20172019 2018 2019 2018
Net income$2,296
 $2,151
 $4,607
 $4,222
$2,179
 $2,296
 $4,171
 $4,607
Other comprehensive income (loss), net of reclassification adjustments and taxes:              
(Losses) gains on foreign currency translation(111) 35
 (82) 59
Gains (losses) on cash flow hedges223
 (201) 229
 (274)
Losses on foreign currency translation(4) (111) (17) (82)
(Losses) gains on cash flow hedges(104) 223
 (59) 229
Gains (losses) on available-for-sale securities9
 80
 (334) 238
153
 9
 374
 (334)
Other
 (1) 2
 (1)6
 
 6
 2
Other comprehensive income (loss), net of taxes121
 (87) (185) 22
51
 121
 304
 (185)
Comprehensive income$2,417
 $2,064
 $4,422
 $4,244
$2,230
 $2,417
 $4,475
 $4,422


See accompanying notes.


AMGEN INC.
CONDENSED CONSOLIDATED BALANCE SHEETS
(In millions, except per-share data)


June 30,
2018
 December 31,
2017
June 30,
2019
 December 31,
2018
(Unaudited)  (Unaudited)  
ASSETS
Current assets:      
Cash and cash equivalents$10,131
 $3,800
$5,525
 $6,945
Marketable securities19,264
 37,878
16,233
 22,359
Trade receivables, net3,504
 3,237
3,801
 3,580
Inventories3,063
 2,834
3,176
 2,940
Other current assets2,008
 1,727
2,011
 1,794
Total current assets37,970
 49,476
30,746
 37,618
      
Property, plant and equipment, net4,922
 4,989
4,882
 4,958
Intangible assets, net8,443
 8,609
6,813
 7,443
Goodwill14,724
 14,761
14,689
 14,699
Other assets1,625
 2,119
2,243
 1,698
Total assets$67,684
 $79,954
$59,373
 $66,416
      
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:      
Accounts payable$1,026
 $1,352
$1,001
 $1,207
Accrued liabilities5,891
 6,516
6,805
 7,862
Current portion of long-term debt4,288
 1,152
2,816
 4,419
Total current liabilities11,205
 9,020
10,622
 13,488
      
Long-term debt30,209
 34,190
27,798
 29,510
Long-term deferred tax liabilities1,155
 1,166
763
 864
Long-term tax liabilities8,763
 9,099
7,861
 8,770
Other noncurrent liabilities1,443
 1,238
1,535
 1,284
      
Contingencies and commitments
 

 

      
Stockholders’ equity:      
Common stock and additional paid-in capital; $0.0001 par value; 2,750.0 shares authorized; outstanding — 649.0 shares in 2018 and 722.2 shares in 201731,048
 30,992
Common stock and additional paid-in capital; $0.0001 par value; 2,750.0 shares authorized; outstanding — 602.1 shares in 2019 and 629.6 shares in 201831,313
 31,246
Accumulated deficit(15,266) (5,072)(20,054) (17,977)
Accumulated other comprehensive loss(873) (679)(465) (769)
Total stockholders’ equity14,909
 25,241
10,794
 12,500
Total liabilities and stockholders’ equity$67,684
 $79,954
$59,373
 $66,416


See accompanying notes.

AMGEN INC.
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In millions, except per-share data)
(Unaudited)

 
Number
of shares
of common
stock
 
Common
stock and
additional
paid-in capital
 
Accumulated
deficit
 
Accumulated
other
comprehensive
loss
 Total
Balance as of December 31, 2018629.6
 $31,246
 $(17,977) $(769) $12,500
Net income
 
 1,992
 
 1,992
Other comprehensive income, net of taxes
 
 
 253
 253
Dividends declared on common stock ($1.45 per share)
 
 (879) 
 (879)
Issuance of common stock in connection with the Company’s equity award programs0.7
 6
 
 
 6
Stock-based compensation expense
 64
 
 
 64
Tax impact related to employee stock-based compensation expense
 (73) 
 
 (73)
Repurchases of common stock(15.9) 
 (3,031) 
 (3,031)
Balance as of March 31, 2019614.4
 31,243
 (19,895) (516) 10,832
Net income
 
 2,179
 
 2,179
Other comprehensive income, net of taxes
 
 
 51
 51
Issuance of common stock in connection with the Company’s equity award programs0.8
 23
 
 
 23
Stock-based compensation expense
 97
 
 
 97
Tax impact related to employee stock-based compensation expense
 (50) 
 
 (50)
Repurchases of common stock(13.1) 
 (2,349) 
 (2,349)
Other
 
 11
 
 11
Balance as of June 30, 2019602.1
 $31,313
 $(20,054) $(465) $10,794

See accompanying notes.



















AMGEN INC.
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(In millions, except per-share data)
(Unaudited)


 
Number
of shares
of common
stock
 
Common
stock and
additional
paid-in capital
 
Accumulated
deficit
 
Accumulated
other
comprehensive
loss
 Total
Balance as of December 31, 2017722.2
 $30,992
 $(5,072) $(679) $25,241
Cumulative effect of changes in accounting principles, net of taxes
 
 38
 (9) 29
Net income
 
 2,311
 
 2,311
Other comprehensive loss, net of taxes
 
 
 (306) (306)
Dividends declared on common stock ($1.32 per share)
 
 (877) 
 (877)
Issuance of common stock in connection with the Company’s equity award programs0.6
 5
 
 
 5
Stock-based compensation expense
 61
 
 
 61
Tax impact related to employee stock-based compensation expense
 (57) 
 
 (57)
Repurchases of common stock(56.4) 
 (10,787) 
 (10,787)
Balance as of March 31, 2018666.4
 31,001
 (14,387) (994) 15,620
Net income
 
 2,296
 
 2,296
Other comprehensive income, net of taxes
 
 
 121
 121
Issuance of common stock in connection with the Company’s equity award programs0.8
 19
 
 
 19
Stock-based compensation expense
 93
 
 
 93
Tax impact related to employee stock-based compensation expense
 (65) 
 
 (65)
Repurchases of common stock(18.2) 
 (3,190) 
 (3,190)
Other
 
 15
 
 15
Balance as of June 30, 2018649.0
 $31,048
 $(15,266) $(873) $14,909

See accompanying notes.


AMGEN INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In millions)
(Unaudited)

Six months ended
June 30,
Six months ended
June 30,
2018 20172019 2018
Cash flows from operating activities:      
Net income$4,607
 $4,222
$4,171
 $4,607
Depreciation and amortization955
 1,042
Share-based compensation expense147
 156
Depreciation, amortization and other996
 955
Deferred income taxes(114) (180)(70) (114)
Other items, net34
 109
32
 181
Changes in operating assets and liabilities, net of acquisition:      
Trade receivables, net(348) (391)(228) (348)
Inventories(135) (90)(118) (135)
Other assets(232) (194)(158) (232)
Accounts payable(329) (43)(205) (329)
Accrued income taxes, net(314) (120)(257) (314)
Long-term tax liability134
 186
Long-term tax liabilities(322) 134
Other liabilities424
 14
(582) 424
Net cash provided by operating activities4,829
 4,711
3,259
 4,829
Cash flows from investing activities:      
Purchases of marketable securities(6,733) (19,244)(7,250) (6,733)
Proceeds from sales of marketable securities23,723
 14,425
217
 23,723
Proceeds from maturities of marketable securities993
 3,284
13,617
 993
Cash acquired in acquisition, net of cash paid197
 

 197
Purchases of property, plant and equipment(342) (353)(260) (342)
Other6
 (82)(24) 6
Net cash provided by (used in) investing activities17,844
 (1,970)
Net cash provided by investing activities6,300
 17,844
Cash flows from financing activities:      
Net proceeds from issuance of debt
 3,485
Repayment of debt(500) (4,405)(3,650) (500)
Net change in commercial paper
 959
Repurchases of common stock(13,941) (1,562)(5,447) (13,941)
Dividends paid(1,816) (1,693)(1,781) (1,816)
Other(85) (137)(101) (85)
Net cash used in financing activities(16,342) (3,353)(10,979) (16,342)
Increase (decrease) in cash and cash equivalents6,331
 (612)
(Decrease) increase in cash and cash equivalents(1,420) 6,331
Cash and cash equivalents at beginning of period3,800
 3,241
6,945
 3,800
Cash and cash equivalents at end of period$10,131
 $2,629
$5,525
 $10,131


See accompanying notes.


AMGEN INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
June 30, 20182019
(Unaudited)
1. Summary of significant accounting policies
Business
Amgen Inc. (including its subsidiaries, referred to as “Amgen,” “the Company,” “we,” “our” or “us”) is a global biotechnology pioneer that discovers, develops, manufactures and delivers innovative human therapeutics. We operate in one business segment: human therapeutics.
Basis of presentation
The financial information for the three and six months ended June 30, 20182019 and 2017,2018, is unaudited but includes all adjustments (consisting of only normal, recurring adjustments unless otherwise indicated), which Amgen considers necessary for a fair presentation of its condensed consolidated results of operations for those periods. Interim results are not necessarily indicative of results for the full fiscal year.
The condensed consolidated financial statements should be read in conjunction with our consolidated financial statements and the notes thereto contained in our Annual Report on Form 10-K for the year ended December 31, 2017,2018, and with our condensed consolidated financial statements and the notes thereto contained in our Quarterly Report on Form 10-Q for the period ended March 31, 2018.2019.
Principles of consolidation
The condensed consolidated financial statements include the accounts of Amgen as well as its majority-owned subsidiaries. We do not have any significant interests in anyvariable interest entities. All material intercompany transactions and balances have been eliminated in consolidation.
Use of estimates
The preparation of condensed consolidated financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results may differ from those estimates.
Property, plant and equipment, net
Property, plant and equipment is recorded at historical cost, net of accumulated depreciation and amortization of $7.8$8.1 billion and $7.6$7.8 billion as of June 30, 20182019 and December 31, 2017,2018, respectively.
RevenuesLeases
Adoption of new revenue recognitionlease standard
In May 2014,February 2016, the Financial Accounting Standards Board (FASB) issued a new accounting standard that amends the guidance for the recognition of revenue from contracts with customers to transfer goods and services. The FASB subsequently issued additional, clarifying standards to address issues arising from implementation of the new revenue recognition standard. The new revenue recognition standard and clarifying standards require an entity to recognize revenue when control of promised goods or services is transferred to the customer at an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We adopted this new standard as of January 1, 2018, by applying the modified-retrospective method to those contracts that were not completed as of that date.
The results for reporting periods beginning after January 1, 2018, are presented in accordance with the new standard, although comparative information has not been restated and continues to be reported under the accounting standards and policies in effect for those periods. See Note 1, Summary of significant accounting policies, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017.
Upon adoption, we recorded a net decrease of $25 million to Accumulated deficit due to the cumulative impact of adopting the new standard—with the impact related primarily to the acceleration of deferred revenue, net of related deferred tax impact. The adoption of this new standard had an immaterial impact on our reported total revenues and operating income as compared to what reported amounts would have been under the prior standard, and we expect the impact of adoption in future periods to be immaterial. Our accounting policies under the new standard were applied prospectively and are described below. See Note 4, Revenues.

Product sales and sales deductions
Revenue from product sales is recognized upon transfer of control of a product to a customer, generally upon delivery, based on an amount that reflects the consideration to which we expect to be entitled, net of accruals for estimated rebates, wholesaler chargebacks, discounts and other deductions (collectively, sales deductions) and returns established at the time of sale.
We analyze the adequacy of our accruals for sales deductions quarterly. Amounts accrued for sales deductions are adjusted when trends or significant events indicate that an adjustment is appropriate. Accruals are also adjusted to reflect actual results. Accruals for sales deductions are based primarily on estimates of the amounts earned or to be claimed on the related sales. These estimates take into consideration current contractual and statutory requirements, specific known market events and trends, internal and external historical data and forecasted customer buying patterns. Sales deductions are substantially product specific and therefore, for any given period, can be affected by the mix of products sold. Included in sales deductions are immaterial net adjustments related to prior-period sales due to changes in estimates. Historically, such amounts have represented less than 1% of the aggregate sales deductions charged against product sales.
Returns are estimated through comparison of historical return data to their related sales on a production lot basis. Historical rates of return are determined for each product and are adjusted for known or expected changes in the marketplace specific to each product, when appropriate. Historically, sales return provisions have amounted to less than 1% of gross product sales. Changes in estimates for prior-period sales return provisions have historically been insignificant.
Taxes collected from customers and remitted to government authorities and that are related to sales of the Company’s products, primarily in Europe, are excluded from revenues.
As a practical expedient, sales commissions are expensed when incurred because the amortization period would have been one year or less. These costs are recorded in Selling, general and administrative expenses in the Condensed Consolidated Statements of Income.
Other revenues
Other revenues consist primarily of royalty income and corporate partner revenues. Royalties from licensees are based on third-party sales of licensed products and are recorded when the related third-party product sale occurs. Royalty estimates are based on historical and forecasted sales trends. Corporate partner revenues are composed primarily of license fees and milestones earned and our share of commercial profits generated from collaborations. See Arrangements with multiple-performance obligations, discussed below.
Arrangements with multiple-performance obligations
From time to time, we enter into arrangements for the research and development (R&D), manufacture and/or commercialization of products and product candidates. Such arrangements may require us to deliver various rights, services and/or goods, including (i) intellectual property rights or licenses; (ii) R&D services; (iii) manufacturing services; and/or (iv) commercialization services. The underlying terms of these arrangements generally provide for consideration to Amgen in the form of nonrefundable, up-front license payments, R&D and commercial performance milestone payments, cost sharing and/or royalty payments.
In arrangements involving more than one performance obligation, each required performance obligation is evaluated to determine whether it qualifies as a distinct performance obligation based on whether (i) the customer can benefit from the good or service either on its own or together with other resources that are readily available and (ii) the good or service is separately identifiable from other promises in the contract. The consideration under the arrangement is then allocated to each separate distinct performance obligation based on its respective relative stand-alone selling price. The estimated selling price of each deliverable reflects our best estimate of what the selling price would be if the deliverable was regularly sold by us on a stand-alone basis or using an adjusted market assessment approach if selling price on a stand-alone basis is not available.
The consideration allocated to each distinct performance obligation is recognized as revenue when control of the related goods or services is transferred. Consideration associated with at-risk substantive performance milestones is recognized as revenue when it is probable that a significant reversal of the cumulative revenue recognized will not occur.
Other recent accounting pronouncements
In January 2016, the FASB issued a new accounting standard that amends the accounting and disclosures of financial instruments, including a provision requiring that equity investments (except for investments accounted for under the equity method of accounting) be measured at fair value, with changes in fair value recognized in current earnings. With the exception of equity investments that were previously accounted for at cost, a modified-retrospective approach was used to reflect the cumulative effect of adoption as an adjustment to Accumulated deficit as of the beginning of the fiscal year. The new standard will be applied prospectively to investments that were previously accounted for at cost. Upon adoption, on January 1, 2018, we recorded an immaterial adjustment to Accumulated deficit from Accumulated other comprehensive income (loss) (AOCI), which represented

the net unrealized gain on all equity investments with a readily determinable fair value as of December 31, 2017. The impact that this new standard has on our Condensed Consolidated Statements of Income after adoption will depend on changes in fair values of equity securities in our portfolio in the future. See Note 8, Investments.
In October 2016, the FASB issued a new accounting standard that amends the income tax accounting guidance for intra-entity transfers of assets other than inventory. The new standard requires that entities recognize the income tax consequences of an intercompany transfer of an asset, other than inventory, in the period the transfer occurs. The current exception to defer the recognition of any tax impact on intercompany transfers of inventory until the inventory is sold to a third party remains unaffected. We adopted this standard as of January 1, 2018, and will apply it prospectively to any transaction occurring on or after the adoption date. The adoption of this standard did not have a material impact on our condensed consolidated financial statements, however the impact on our condensed consolidated financial statements in future periods will depend on the facts and circumstances of future transactions.
In March 2018, the FASB issued a new accounting standard to incorporate Securities and Exchange Commission (SEC) Staff Accounting Bulletin No. 118 (SAB 118), which addresses accounting implications of major tax reform legislation Public Law No. 115-97, commonly referred to as the Tax Cuts and Jobs Act (the 2017 Tax Act), enacted on December 22, 2017. SAB 118 allows a company to record provisional amounts during a measurement period not to extend beyond one year of the enactment date and was effective upon issuance. We continue to analyze the 2017 Tax Act, and in certain areas, have made reasonable estimates of the effects on our condensed consolidated financial statements and tax disclosures. See Note 5, Income taxes.
In August 2017, the FASB issued a new accounting standard that amends the accounting and reporting of hedging activities, which we elected to adopt early during the second quarter of 2018. Among its provisions, the new standard: (i) eliminates the separate measurement and reporting of hedge ineffectiveness and (ii) permits an entity to recognize in earnings the initial fair value of an excluded component of a hedging instrument’s fair value under a systematic and rational method over the life of the derivative instrument. In accordance with the transition provisions of the new standard, the separate measurement of ineffectiveness for our cash flow hedging instruments existing as of the date of adoption is required to be eliminated through a cumulative-effect adjustment to Accumulated deficit as of January 1, 2018, the beginning of the fiscal year. The ineffective portions of our cash flow hedges were not material to our previously issued condensed consolidated financial statements. In addition, certain provisions in the guidance require modifications to existing presentation and disclosure requirements on a prospective basis. The adoption of this standard did not have a material impact on our condensed consolidated financial statements. See Note 14, Derivative instruments.
In January 2017, the FASB issued a new accounting standard that changes the definition of a business to assist entities with the evaluation of when a set of assets acquired or disposed of should be considered a business. The new standard requires that an entity evaluate whether substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or group of similar identifiable assets; if so, the set of assets would not be considered a business. The new standard also requires that a business include at least one substantive process, and it narrows the definition of outputs. We adopted this standard as of January 1, 2018, and will apply it prospectively. Adoption of this new standard may result in more transactions being accounted for as asset acquisitions versus business combinations; however, the impact on our condensed consolidated financial statements in future periods will depend on the facts and circumstances of future transactions.
In February 2016, the FASB issued a new accounting standard that amends the guidance for the accounting and disclosure of leases. This new standard requires that lessees recognize on the balance sheet the assets and liabilities that arise from leases on the balance sheet, including leases classified as operating leases, under current GAAP, and that they disclose qualitative and quantitative information about leasing arrangements. The FASB subsequently issued additional amendments to address issues arising from the implementation of the new lease standard. We adopted this standard requires a modified-retrospective approach to adoption and is effective for interim and annual periods beginning onas of January 1, 2019, but may be adopted earlier.using the modified-retrospective method. This approach provides a method for recording existing leases at adoption. We expectused the adoption date as our date of initial application, and thus comparative-period financial information is not presented for periods prior to adopt thisthe adoption date. In addition, we elected the package of practical expedients permitted under the transition guidance within the new standard, beginningwhich, among other things, allowed us to carry forward the historical lease classification.
Adoption of the new standard resulted in total lease liabilities of $510 million and right-of-use (ROU) assets of $439 million as of January 1, 2019. The difference between the first quarterinitial lease liabilities and the ROU assets is related primarily to previously existing lease liabilities. The standard did not materially impact our Condensed Consolidated Statements of 2019. We do not expect that this standard will have a materialIncome and had no impact on our Condensed Consolidated Statements of Income, butCash Flows. Our accounting policies under the new standard are described below. See Note 8, Leases.

Lease recognition
At inception of a contract, we do expect that upon adoption, it will havedetermine whether an arrangement is or contains a material impact on ourlease. For all leases, we determine the classification as either operating or financing. Operating leases are included in Other assets, Accrued liabilities and Other noncurrent liabilities onin our Condensed Consolidated Balance Sheets. The primary effect
ROU assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments under the lease. Lease recognition occurs at the commencement date, and lease liability amounts are based on the present value of adoptionlease payments made during the lease term. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will beexercise that option. Because most of our leases do not provide information to determine an implicit interest rate, we use our incremental borrowing rate in determining the requirementpresent value of lease payments. ROU assets also include any lease payments made prior to record right-of-use assetsthe commencement date and correspondingexclude lease obligation liabilitiesincentives received. Operating lease expense is recognized on a straight-line basis over the lease term.
We have lease agreements with both lease and nonlease components, which are generally accounted for current operating leases.together as a single lease component. In addition, for certain vehicle and equipment leases, we apply a portfolio approach to determine the standard requires that we update the systems, processeslease term and controls we use to track, record and account for our lease portfolio. We have selected a leasediscount rate.
Other recent accounting information system and engaged third-party consultants to provide system implementation services. System readiness, including the implementation and functionality of software procured from third-party providers, is essential to enable preparation of the financial information required for this standard.pronouncements
In June 2016, the FASB issued a new accounting standard that amends the guidance for measuring and recording credit losses on financial assets measured at amortized cost by replacing the “incurred loss”incurred-loss model with an “expected loss”expected-loss model. Accordingly, these financial assets will be presented at the net amount expected to be collected. This new standard also requires that credit losses related to available-for-sale debt securities be recorded as an allowance through net income rather than by reducing the carrying amount under the current, other-than-temporary-impairment model. The new standard is effective for interim and annual periods beginning on January 1, 2020, but may be adopted earlier, beginning on January 1, 2019.earlier. With certain exceptions, adjustments are to be applied by using a modified-retrospective approach by reflecting adjustments through a cumulative-effect impact on retained

earnings as of the beginning of the fiscal year of adoption. We are currently evaluating the impact that this new standard will have on our condensed consolidated financial statements.
2. Restructuring
In 2014, we initiated a restructuring plan to invest in continuing innovation and the launch of our new pipeline molecules, while improving our cost structure. As part of the plan, we closed facilities in Washington State and Colorado and are reducing the number of buildings we occupy at our headquarters in Thousand Oaks, California, as well as at other locations.
We estimate that we will incur $800 million to $900 million of pretax charges in connection with our restructuring, including (i) separation and other headcount-related costs of $540 million to $600 million with respect to staff reductions and (ii) asset-related charges of $260 million to $300 million that consist primarily of asset impairments, accelerated depreciation and other related costs resulting from the consolidation of our worldwide facilities. Through June 30, 2018, we incurred $549 million of separation costs and other headcount-related costs and $245 million of net asset-related charges.
The amounts related to the restructuring recorded in the Condensed Consolidated Statements of Income during the three and six months ended June 30, 2018 and 2017, were not significant. As of June 30, 2018, the total restructuring liability was not significant.
3. Business combinations
Kirin-Amgen, Inc.
During the first quarter of 2018, we acquired the remaining 50% ownership of Kirin-Amgen, Inc. (K-A) from Kirin Holdings Company, Limited (Kirin), making K-A a wholly owned subsidiary of Amgen. Upon its acquisition, K-A’s operations have been included in our condensed consolidated financial statements commencing on the share acquisition date. The acquisition relieved Amgen of future royalty obligations to K-A.
K-A is a corporation that was established in 1984 as a 50-50 joint venture with Kirin to fund the global development of EPOGEN® (epoetin alfa). Over time, the scope of the collaboration was expanded to also include the products NEUPOGEN® (filgrastim), Neulasta® (pegfilgrastim), Aranesp® (darbepoetin alfa), Nplate® (romiplostim) and brodalumab. K-A held the intellectual property for each of these products and licensed the associated marketing rights in Asia to Kyowa Hakko Kirin (KHK), Kirin’s pharmaceutical subsidiary, and in most other territories to Amgen. In return, Amgen and KHK paid royalties to K-A, and K-A reimbursed Amgen and KHK’s R&D expenses. K-A had also given Johnson & Johnson (J&J) exclusive licenses to manufacture and market recombinant human erythropoietin for all geographic areas of the world outside the United States, China and Japan. Under this agreement, J&J pays royalties to K-A based on product sales.
Prior to the share acquisition date, we owned 50% of K-A and accounted for our interest in K-A by using the equity method of accounting, which included recording our share of K-A’s profits or losses in Selling, general and administrative expenses in the Condensed Consolidated Statements of Income. The carrying value of our equity method investment in K-A was $570 million as of December 31, 2017, and was included in Other assets in the Condensed Consolidated Balance Sheet.
The transaction was accounted for as a step acquisition of a business in which we were required to remeasure our existing 50% ownership interest at fair value. In addition, we were required to effectively settle our preexisting relationship with K-A, which resulted in a loss. Together the gain on the remeasurement of our existing ownership interest and the loss from the settlement of the preexisting relationship resulted in a net gain of $80 million, which was recorded in Interest and other income, net, in the Condensed Consolidated Statements of Income.
The primary means of consideration for this transaction was a payment of $780 million in cash. The aggregate share acquisition date consideration to acquire the remaining 50% ownership in K-A and the fair value of Amgen’s preacquisition investment consisted of the following (in millions):
  Amount
Total cash paid to Kirin $780
Fair value of contingent consideration obligation 45
Loss on settlement of preexisting relationship (168)
Total consideration transferred to acquire K-A 657
   
Fair value of Amgen’s investment in K-A 825
Total acquisition date fair value $1,482

In connection with this acquisition, we are obligated to make single-digit-percentage royalty payments to Kirin contingent upon sales of brodalumab. The estimated fair value of this contingent consideration obligation was $45 million as of the share acquisition date.
The fair values of assets acquired and liabilities assumed included cash of $977 million, licensing rights of $470 million, deferred tax liabilities of $102 million, other assets and liabilities of $131 million and goodwill of $6 million. The estimated fair value of acquired licensing rights was determined by using a probability-weighted-income approach, which discounts expected future cash flows to present value by using a discount rate that represents the estimated rate that market participants would use to value the assets. The projected cash flows were based on certain assumptions, including estimates of future revenues and expenses and the time and resources needed to maintain the assets through commercialization. The licensing rights will be amortized over a weighted-average period of four years by using the straight-line method. The excess of the share acquisition date consideration over the fair values assigned to the assets acquired and the liabilities assumed of $6 million was recorded as goodwill, which is not deductible for tax purposes. The $131 million in other assets and liabilities represents primarily receivables for royalties earned by K-A but not yet received, offset partially by payables representing R&D expenses incurred but not yet reimbursed by K-A. The fair value estimates for the assets acquired and liabilities assumed were based on preliminary calculations and valuations, and our estimates and assumptions are subject to change as we obtain additional information during the measurement period (up to one year from the share acquisition date). The primary areas of those preliminary estimates that are not yet finalized relate to tax-related items.
Pro forma results of operations for this acquisition have not been presented because this acquisition is not material to our consolidated results of operations.
4. Revenues
Revenues by product and by geographic area
We operate in one business segment: human therapeutics. Therefore, results of our operations are reported on a consolidated basis for purposes of segment reporting, consistent with internal management reporting. Revenues by product and by geographic area, based on customers’ locations, are presented below. Rest-of-world (ROW) revenues relate to products that are sold principallyprimarily in Europe.

Revenues were as follows (in millions):
  Three months ended June 30,
  2018 2017
  US ROW Total US ROW Total
Enbrel®
 1,252
 50
 1,302
 1,411
 55
 1,466
Neulasta®
 948
 152
 1,100
 937
 150
 1,087
Prolia®
 396
 214
 610
 326
 179
 505
Aranesp®
 241
 231
 472
 288
 247
 535
Sensipar® / Mimpara®
 330
 90
 420
 342
 85
 427
XGEVA®
 339
 113
 452
 292
 103
 395
EPOGEN®
 250
 
 250
 292
 
 292
Other products 611
 462
 1,073
 498
 369
 867
Total product sales(1)
 $4,367
 $1,312
 $5,679
 $4,386
 $1,188
 $5,574
Other revenues     380
     236
   Total revenues(2)
     $6,059
     $5,810

  Three months ended June 30,
  2019 2018
  US ROW Total US ROW Total
Enbrel® (etanercept)
 $1,315
 $48
 $1,363
 $1,252
 $50
 $1,302
Neulasta® (pegfilgrastim)
 719
 105
 824
 948
 152
 1,100
Prolia® (denosumab)
 458
 240
 698
 396
 214
 610
XGEVA® (denosumab)
 379
 120
 499
 339
 113
 452
Aranesp® (darbepoetin alfa)
 192
 244
 436
 241
 231
 472
KYPROLIS® (carfilzomib)
 166
 101
 267
 151
 112
 263
EPOGEN® (epoetin alfa)
 223
 
 223
 250
 
 250
Sensipar®/Mimpara® (cinacalcet)
 43
 79
 122
 330
 90
 420
Other products 647
 495
 1,142
 460
 350
 810
Total product sales(1)
 $4,142
 $1,432
 5,574
 $4,367
 $1,312
 5,679
Other revenues     297
     380
Total revenues     $5,871
     $6,059
 Six months ended June 30, Six months ended June 30,
 2018 2017 2019 2018
 US ROW Total US ROW Total US ROW Total US ROW Total
Enbrel®
 2,302
 105
 2,407
 2,529
 118
 2,647
ENBREL $2,421
 $93
 $2,514
 $2,302
 $105
 $2,407
Neulasta®
 1,957
 298
 2,255
 1,985
 312
 2,297
 1,612
 233
 1,845
 1,957
 298
 2,255
Prolia®
 716
 388
 1,104
 605
 325
 930
 848
 442
 1,290
 716
 388
 1,104
XGEVA®
 735
 235
 970
 671
 226
 897
Aranesp®
 466
 460
 926
 566
 480
 1,046
 374
 476
 850
 466
 460
 926
Sensipar® / Mimpara®
 739
 178
 917
 679
 169
 848
XGEVA®
 671
 226
 897
 590
 207
 797
KYPROLIS®
 320
 192
 512
 288
 197
 485
EPOGEN®
 494
 
 494
 562
 
 562
 442
 
 442
 494
 
 494
Sensipar®/Mimpara®
 178
 157
 335
 739
 178
 917
Other products 1,169
 853
 2,022
 965
 681
 1,646
 1,203
 899
 2,102
 881
 656
 1,537
Total product sales(1)
 $8,514
 $2,508
 $11,022
 $8,481
 $2,292
 $10,773
 $8,133
 $2,727
 10,860
 $8,514
 $2,508
 11,022
Other revenues     591
     501
     568
     591
Total revenues(2)
     $11,613
     $11,274
Total revenues     $11,428
     $11,613
____________ 
(1) 
TotalHedging gains and losses, which are included in product sales, includes $20 million related to hedging losses and $33 million related to hedging gainswere not material for the three months ended June 30, 2018 and 2017, respectively. Total product sales includes $54 million related to hedging losses and $90 million related to hedging gains for the six months ended June 30, 20182019 and 2017, respectively.2018.
(2)
Prior-period amounts are not adjusted under the modified-retrospective method of adoption.
Financing and payment
Our payment terms vary by types and locations of customers and the products or services offered. Payment terms differ by jurisdiction and customer, but payment is generally required in a term ranging from 30 to 120 days from date of shipment or satisfaction of the performance obligation.
For certain products or services and certain customer types, we may require payment before products are delivered or services are rendered to customers.
Optional exemptions
We do not disclose the value of unsatisfied performance obligations for (i) contracts with original expected lengths of one year or less or (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for the services performed.
5.3. Income taxes
The effective tax rates for the three and six months ended June 30, 2018,2019, were 13.3%15.0% and 12.5%14.5%, respectively, compared with 15.4%13.3% and 15.6%12.5%, respectively, for the corresponding periods of the prior year.
The decreaseincrease in our effective tax raterates for the three and six months ended June 30, 2018,2019, was due primarily to the impacts ofa prior-year tax benefit associated with intercompany sales under U.S. corporate tax reform, offset partially byreform. The effective tax rates differ from the federal statutory rate primarily as a prior year benefit associated withresult of foreign earnings from the effective settlementCompany’s operations conducted in Puerto Rico, a territory of certain state and federal tax matters.
On December 22, 2017, the United States enacted the 2017 Tax Act, which imposes a repatriation tax on accumulated earnings of foreign subsidiaries, implements a hybrid territorial tax system together with a current tax on certain foreign earnings and lowers the general corporate income tax rate to 21%. In March 2018, the FASB issued a new accounting standard to incorporate SAB 118, which permits us to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. We continue to analyze the 2017 Tax Act and in certain areas have made reasonable estimates of the effects on our condensed consolidated financial statements and tax disclosures.
The 2017 Tax Act includes U.S. taxation on certain foreign earnings, referred to as Global Intangible Low-Taxed Income (foreign intangible income), effective January 1, 2018. The FASB allows an entity to make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as foreign intangible income in future years or provide for the tax expense related to the foreign intangible incomethat is treated as a period expense in the year itforeign jurisdiction for U.S. tax purposes and that is incurred. We have recorded no provisional amount for deferred taxes on foreign intangible income because more time is neededsubject to analyze the data in ordertax incentive grants through 2035; these earnings are subject to make an accounting policy election.U.S. tax at a reduced 10.5% rate.

We consider our key estimates on the repatriation tax, the net deferred tax remeasurement, the impact on our unrealized tax benefits and the accounting policy election on temporary basis differences related to foreign intangible income to be incomplete due to our continuing analysis of final year-end data and tax positions. We are still accumulating and processing data to update our underlying calculations, and we expect the U.S. Treasury and regulators may issue further guidance, among other things; therefore, our estimates may change during 2018. However, we expect to complete our analysis within the measurement period.
The U.S. territory of Puerto Rico imposes an excise tax on the gross intercompany purchase price of goods and services from our manufacturer in Puerto Rico. The rate of 4% is effective through December 31, 2027. We account for the excise tax as a manufacturing cost that is capitalized in inventory and expensed in cost of sales when the related products are sold. For U.S. income tax purposes, the excise tax results in foreign tax credits that are generally recognized in our provision for income taxes when the excise tax is incurred.
One or more of our legal entities file income tax returns in the U.S. federal jurisdiction, various U.S. state jurisdictions and certain foreign jurisdictions. Our income tax returns are routinely auditedexamined by the tax authorities in those jurisdictions. Significant disputes may arise with authorities involving issues of the timing and amount of deductions, the use of tax credits and allocations of income and expenses among various tax jurisdictions because of differing interpretations of tax laws and regulations and the interpretationinterpretations of the relevant facts. As previously disclosed, we received a Revenue Agent Report (RAR) from the Internal Revenue Service (IRS) for the years 2010, 2011 and 2012. The RAR proposes to make significant adjustments that relate primarily to the allocation of profits between certain of our entities in the United States and the U.S. territory of Puerto Rico. OnIn November 29, 2017, we received a modified RAR that revised the IRS calculationsIRS’s calculation but continued to propose substantial adjustments. We disagree with the proposed adjustments and are pursuing resolution throughwith the IRS administrative appeals process,office, which currently has jurisdiction over the matter. If we believedeem necessary, we will likelyvigorously contest the proposed adjustments through the judicial process. Final resolution of this complex matter is not be concludedlikely within the next 12 months. Final resolution of the IRS auditmonths and could have a material impact on our results of operations and cash flows if not resolved favorably, however, wecondensed consolidated financial statements. We believe our accrual for income tax reserves are appropriately providedliabilities is appropriate based on past experience, interpretations of tax law, and judgments about potential actions by tax authorities; however, due to the complexity of the provision for all openincome taxes, the ultimate resolution of any tax years.matters may result in payments greater or less than amounts accrued. We are no longer subject to U.S. federal income tax examinations for years ended on or before December 31, 2009. WeIn addition, we are currently under examination by a number of other state and foreign tax jurisdictions.

During the three and six months ended June 30, 2018,2019, the gross amounts of our unrecognized tax benefits (UTBs) increased $80$60 million and $155$110 million, respectively, as a result of tax positions taken during the current year. Substantially all of the UTBs as of June 30, 2018,2019, if recognized, would affect our effective tax rate.
6.4. Earnings per share
The computation of basic earnings per share (EPS) is based on the weighted-average number of our common shares outstanding. The computation of diluted EPS is based on the weighted-average number of our common shares outstanding and dilutive potential common shares, which include primarily shares that may be issued under our stock option, restricted stock and performance unit award programs (collectively, dilutive securities), as determined by using the treasury stock method (collectively, dilutive securities).method.
The computations for basic and diluted EPS were as follows (in millions, except per-share data):
 Three months ended
June 30,
 Six months ended
June 30,
 2019 2018 2019 2018
Income (Numerator):       
Net income for basic and diluted EPS$2,179
 $2,296
 $4,171
 $4,607
        
Shares (Denominator):       
Weighted-average shares for basic EPS607
 656
 615
 682
Effect of dilutive securities3
 4
 3
 3
Weighted-average shares for diluted EPS610
 660
 618
 685
        
Basic EPS$3.59
 $3.50
 $6.78
 $6.76
Diluted EPS$3.57
 $3.48
 $6.75
 $6.73
 Three months ended
June 30,
 Six months ended
June 30,
 2018 2017 2018 2017
Income (Numerator):       
Net income for basic and diluted EPS$2,296
 $2,151
 $4,607
 $4,222
        
Shares (Denominator):       
Weighted-average shares for basic EPS656
 734
 682
 736
Effect of dilutive securities4
 4
 3
 4
Weighted-average shares for diluted EPS660
 738
 685
 740
        
Basic EPS$3.50
 $2.93
 $6.76
 $5.74
Diluted EPS$3.48
 $2.91
 $6.73
 $5.71

For the three and six months ended June 30, 20182019 and 2017,2018, the number of anti-dilutiveantidilutive employee stock-based awards excluded from the computation of diluted EPS was not significant.



7. Collaborations
A collaborative arrangement is a contractual arrangement that involves a joint operating activity. Such arrangements involve two or more parties that are both (i) active participants in the activity and (ii) exposed to significant risks and rewards dependent on the commercial success of the activity.
From time to time, we enter into collaborative arrangements for the R&D, manufacture and/or commercialization of products and/or product candidates. These collaborations generally provide for nonrefundable up-front license fees, development and commercial-performance milestone payments, cost sharing, royalty payments and/or profit sharing. Our collaboration arrangements are performed with no guarantee of either technological or commercial success, and each is unique in nature. The following describes a significant arrangement that had a material change since the filing of our Annual Report on Form 10-K for the year ended December 31, 2017.
Novartis AG
In April 2017, we expanded our existing migraine collaboration with Novartis AG (Novartis). In the United States, Amgen and Novartis jointly develop and collaborate on the commercialization of AimovigTM (erenumab -aooe). Amgen, as the principal, recognizes product sales of AimovigTM in the United States, shares U.S. commercialization costs with Novartis and pays Novartis a significant royalty on net sales in the United States. Novartis holds global co-development rights and exclusive commercial rights outside the United States and Japan for AimovigTM and other specified migraine programs. Novartis pays Amgen double-digit royalties on net sales of the products in the Novartis exclusive territories and funds a portion of global R&D expenses. As a result of certain regulatory and commercial events, during the three months ended June 30, 2018, we received a milestone payment of $148 million from Novartis, which was recorded in Other revenues in the Condensed Consolidated Statement of Income. In addition, Novartis will make payments to Amgen that could collectively amount to approximately $250 million if certain commercial thresholds are achieved with respect to AimovigTM in the United States. Amgen manufactures and supplies AimovigTM worldwide.
The migraine collaboration will continue for the commercial lives of the products unless terminated in accordance with its terms.
8.5. Investments
Available-for-sale investments
The amortized cost, gross unrealized gains, gross unrealized losses and fair values of interest-bearing securities, which are considered available-for-sale, investments by type of security were as follows (in millions):
Types of securities as of June 30, 2018 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
values
U.S. Treasury securities $3,477
 $
 $(86) $3,391
Types of securities as of June 30, 2019 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
values
U.S. Treasury notes $2,709
 $10
 $(2) $2,717
U.S. Treasury bills 3,497
 
 
 3,497
Other government-related debt securities:                
U.S. 132
 
 (4) 128
 112
 
 
 112
Foreign and other 1,451
 1
 (62) 1,390
 962
 18
 (3) 977
Corporate debt securities:                
Financial 4,091
 1
 (124) 3,968
 2,755
 19
 (1) 2,773
Industrial 3,957
 4
 (122) 3,839
 2,400
 14
 (6) 2,408
Other 699
 
 (23) 676
 558
 4
 
 562
Residential-mortgage-backed securities 1,632
 
 (53) 1,579
 1,335
 2
 (4) 1,333
Other mortgage- and asset-backed securities 672
 
 (20) 652
 469
 
 (6) 463
Money market mutual funds 7,341
 
 
 7,341
 3,886
 
 
 3,886
Other short-term interest-bearing securities 5,872
 
 
 5,872
 2,389
 
 
 2,389
Total available-for-sale investments $29,324
 $6
 $(494) $28,836
Total interest-bearing securities $21,072
 $67
 $(22) $21,117
Types of securities as of December 31, 2018 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
values
U.S. Treasury notes $2,710
 $
 $(47) $2,663
U.S. Treasury bills 8,191
 
 
 8,191
Other government-related debt securities:        
U.S. 112
 
 (2) 110
Foreign and other 972
 1
 (41) 932
Corporate debt securities:        
Financial 2,778
 
 (81) 2,697
Industrial 2,603
 
 (99) 2,504
Other 583
 
 (21) 562
Residential-mortgage-backed securities 1,458
 
 (36) 1,422
Other mortgage- and asset-backed securities 483
 
 (14) 469
Money market mutual funds 5,659
 
 
 5,659
Other short-term interest-bearing securities 3,515
 
 
 3,515
Total interest-bearing securities $29,064
 $1
 $(341) $28,724


Types of securities as of December 31, 2017 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
values
U.S. Treasury securities $8,313
 $1
 $(72) $8,242
Other government-related debt securities:        
U.S. 225
 
 (2) 223
Foreign and other 2,415
 18
 (11) 2,422
Corporate debt securities:        
Financial 10,089
 17
 (34) 10,072
Industrial 9,688
 34
 (52) 9,670
Other 1,393
 3
 (6) 1,390
Residential-mortgage-backed securities 2,198
 
 (30) 2,168
Other mortgage- and asset-backed securities 2,312
 
 (15) 2,297
Money market mutual funds 3,245
 
 
 3,245
Other short-term interest-bearing securities 1,440
 
 
 1,440
Total interest-bearing securities 41,318
 73
 (222) 41,169
Equity securities 135
 14
 
 149
Total available-for-sale investments $41,453
 $87
 $(222) $41,318
The fair values of available-for-sale investmentsinterest-bearing securities by location in the Condensed Consolidated Balance Sheets were as follows (in millions):
Condensed Consolidated Balance Sheets locations June 30,
2019
 December 31,
2018
Cash and cash equivalents $4,884
 $6,365
Marketable securities 16,233
 22,359
Total interest-bearing securities $21,117
 $28,724
Condensed Consolidated Balance Sheets locations June 30,
2018
 December 31,
2017
Cash and cash equivalents $9,572
 $3,291
Marketable securities 19,264
 37,878
Other assets 
 149
Total available-for-sale investments $28,836
 $41,318

Cash and cash equivalents in the above table excludes bank account cash of $559$641 million and $509$580 million as of June 30, 20182019 and December 31, 2017,2018, respectively. Other assets as of December 31, 2017, consisted of equity securities, which are no longer classified as available-for-sale.
As a result of the adoption of the new accounting standard related to the classification and measurement of financial instruments on January 1, 2018, equity investments (except for investments accounted for under the equity method of accounting) are now measured at fair value, with changes in fair value recognized in earnings. These investments were previously measured at fair value, with changes in fair value recognized in AOCI. Accordingly, these securities are no longer classified as available-for-sale and their presentation is not comparable to the presentation as of December 31, 2017. See Equity securities, discussed below, and Note 1, Summary of significant accounting policies.
The fair values of available-for-sale interest-bearing security investmentssecurities by contractual maturity, except for mortgage- and asset-backed securities that do not have a single maturity date, were as follows (in millions):
Contractual maturities June 30,
2019
 December 31,
2018
Maturing in one year or less $9,872
 $17,424
Maturing after one year through three years 5,730
 3,356
Maturing after three years through five years 2,961
 5,168
Maturing after five years through ten years 758
 885
Mortgage- and asset-backed securities 1,796
 1,891
Total interest-bearing securities $21,117
 $28,724
Contractual maturities June 30,
2018
 December 31,
2017
Maturing in one year or less $13,265
 $6,733
Maturing after one year through three years 4,066
 12,820
Maturing after three years through five years 7,940
 13,836
Maturing after five years through ten years 1,334
 3,263
Maturing after ten years 
 52
Mortgage- and asset-backed securities 2,231
 4,465
Total interest-bearing securities $28,836
 $41,169


For the three months ended June 30, 20182019 and 2017,2018, realized gains on interest-bearing securities were $5$1 million and $34$5 million, respectively, and realized losses on interest-bearing securities were $120$3 million and $87$120 million, respectively. For the six months ended June 30, 20182019 and 2017,2018, realized gains on interest-bearing securities were $22$2 million and $65$22 million, respectively, and realized losses on interest-bearing securities were $8 million and $271 million, respectively. Realized gains and $171 million, respectively.losses on interest-bearing securities are recorded in Interest and other income, net, in the Condensed Consolidated Statements of Income. The cost of securities sold is based on the specific-identification method.
The fair values and gross unrealized losses of available-for-sale investmentsinterest-bearing securities in an unrealized loss position aggregated by type and length of time that the securities have been in a continuous loss position were as follows (in millions):
 Less than 12 months 12 months or more Less than 12 months 12 months or more
Types of securities as of June 30, 2018 Fair values Unrealized losses Fair values Unrealized losses
U.S. Treasury securities $3,355
 $(85) $36
 $(1)
Types of securities as of June 30, 2019 Fair values Unrealized losses Fair values Unrealized losses
U.S. Treasury notes $105
 $
 $724
 $(2)
Other government-related debt securities:                
U.S. 102
 (3) 26
 (1) 
 
 48
 
Foreign and other 1,209
 (56) 112
 (6) 6
 
 115
 (3)
Corporate debt securities:                
Financial 3,673
 (115) 258
 (9) 121
 
 320
 (1)
Industrial 3,244
 (110) 314
 (12) 191
 (3) 500
 (3)
Other 584
 (20) 65
 (3) 30
 
 40
 
Residential-mortgage-backed securities 1,267
 (42) 303
 (11) 93
 
 685
 (4)
Other mortgage- and asset-backed securities 540
 (16) 112
 (4) 
 
 401
 (6)
Total $13,974
 $(447) $1,226
 $(47) $546
 $(3) $2,833
 $(19)

  Less than 12 months 12 months or more
Types of securities as of December 31, 2018 Fair values Unrealized losses Fair values Unrealized losses
U.S. Treasury notes $1,219
 $(21) $1,444
 $(26)
Other government-related debt securities:        
U.S. 
 
 110
 (2)
Foreign and other 631
 (31) 240
 (10)
Corporate debt securities:        
Financial 1,968
 (59) 718
 (22)
Industrial 1,898
 (81) 529
 (18)
Other 529
 (20) 28
 (1)
Residential-mortgage-backed securities 576
 (14) 840
 (22)
Other mortgage- and asset-backed securities 17
 
 451
 (14)
Total $6,838
 $(226) $4,360
 $(115)
  Less than 12 months 12 months or more
Types of securities as of December 31, 2017 Fair values Unrealized losses Fair values Unrealized losses
U.S. Treasury securities $7,728
 $(70) $195
 $(2)
Other government-related debt securities:        
U.S. 188
 (1) 34
 (1)
Foreign and other 1,163
 (9) 115
 (2)
Corporate debt securities:        
Financial 5,928
 (28) 462
 (6)
Industrial 5,760
 (43) 612
 (9)
Other 868
 (4) 117
 (2)
Residential-mortgage-backed securities 1,838
 (24) 276
 (6)
Other mortgage- and asset-backed securities 1,777
 (12) 250
 (3)
Total $25,250
 $(191) $2,061
 $(31)

The primary objective of our investment portfolio is to enhance overall returns in an efficient manner while maintaining safety of principal, prudent levels of liquidity and acceptable levels of risk. Our investment policy limits interest-bearing security investments to certain types of debt and money market instruments issued by institutions with primarily investment-grade credit ratings, and it places restrictions on maturities and concentration by asset class and issuer.
We review our available-for-sale investments for other-than-temporary declines in fair value below our cost basis each quarter and whenever events or changes in circumstances indicate that the cost basis of an asset may not be recoverable. The evaluation is based on a number of factors, including the length of time and the extent to which the fair value has been below our cost basis andas well as adverse conditions related specifically to the security, includingsuch as any changes to the credit rating of the security and the intent to sell or whether we will more likely than not be required to sell the security before recovery of its amortized cost basis. Our assessment of whether a security is other-than-temporarily impaired could change in the future based on new developments or changes in assumptions related to that particular security. As of June 30, 20182019 and December 31, 2017,2018, we believe the cost bases for our available-for-sale investments were recoverable in all material respects.

Equity securities
We held investments in equity securities with readily determinable fair values of $200$287 million and $149$176 million as of June 30, 20182019 and December 31, 2017,2018, respectively, which are included in Other assets in the Condensed Consolidated Balance Sheets. As a result of the adoption of the new accounting standard related to the classification and measurement of financial instruments on January 1, 2018, equity investments (except for investments accounted for under the equity method of accounting) are now measured at fair value, with changes in fair value recognized in earnings. These investments were previously measured at fair value, with changes in fair value recognized in AOCI. Accordingly, these securities are no longer classified as available-for-sale and their presentation is not comparable to the presentation as of December 31, 2017. See Available-for-sale investments, discussed above, and Note 1, Summary of significant accounting policies. Gains and losses recognized on equity securities with readily determinable fair values, including gains and losses recognized on sales, were not material for the three and six months ended June 30, 2019 and 2018.
As of June 30, 2019 and December 31, 2018, respectively, we held investments of $169 million and 2017.$222 million in equity securities without readily determinable fair values, which are included in Other assets in the Condensed Consolidated Balance Sheets. Adjustments to the carrying values of these securities were not material for the three and six months ended June 30, 2019 and 2018.
Limited partnership investments
We held limited partnership investments of $266$312 million and $213$285 million as of June 30, 20182019 and December 31, 2017,2018, respectively, which are included in Other assets in the Condensed Consolidated Balance Sheets. These investments are measured by using the net asset values of the underlying investments as a practical expedient. These investments are typically redeemable only through distributions upon liquidation of the underlying assets. As of June 30, 2018,2019, unfunded additional commitments to be made during the next several years for these investments were not material. Gains and losses recognized on our limited partnership investments were not material for the three and six months ended June 30, 2019 and 2018.
9.
6. Inventories
Inventories consisted of the following (in millions):
 June 30,
2019
 December 31,
2018
Raw materials$294
 $257
Work in process1,788
 1,660
Finished goods1,094
 1,023
Total inventories$3,176
 $2,940
 June 30,
2018
 December 31,
2017
Raw materials$303
 $232
Work in process1,702
 1,668
Finished goods1,058
 934
Total inventories$3,063
 $2,834

10.7. Goodwill and other intangible assets
Goodwill
ChangesThe change in the carrying amount of goodwill werewas as follows (in millions):
 Six months ended
June 30, 2019
Beginning balance$14,699
Currency translation adjustment(10)
Ending balance$14,689
 Six months ended
June 30, 2018
Beginning balance$14,761
Addition from K-A acquisition6
Currency translation adjustment(43)
Ending balance$14,724


Other intangible assets
Other intangible assets consisted of the following (in millions):
 June 30, 2019 December 31, 2018
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Other intangible
assets, net
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Other intangible
assets, net
Finite-lived intangible assets:           
Developed-product-technology rights$12,563
 $(7,812) $4,751
 $12,573
 $(7,479) $5,094
Licensing rights3,693
 (2,174) 1,519
 3,772
 (2,032) 1,740
Marketing-related rights1,209
 (959) 250
 1,297
 (1,019) 278
Research and development technology rights1,148
 (910) 238
 1,148
 (872) 276
Total finite-lived intangible assets18,613
 (11,855) 6,758
 18,790
 (11,402) 7,388
Indefinite-lived intangible assets:           
In-process research and development55
 
 55
 55
 
 55
Total other intangible assets$18,668
 $(11,855) $6,813
 $18,845
 $(11,402) $7,443
 June 30, 2018 December 31, 2017
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Intangible
assets, net
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Intangible
assets, net
Finite-lived intangible assets:           
Developed-product-technology rights$12,581
 $(7,139) $5,442
 $12,589
 $(6,796) $5,793
Licensing rights3,772
 (1,810) 1,962
 3,275
 (1,601) 1,674
Marketing-related rights1,303
 (967) 336
 1,319
 (920) 399
R&D technology rights1,155
 (838) 317
 1,161
 (804) 357
Total finite-lived intangible assets18,811
 (10,754) 8,057
 18,344
 (10,121) 8,223
Indefinite-lived intangible assets:           
In-process research and development386
 
 386
 386
 
 386
Total other intangible assets$19,197
 $(10,754) $8,443
 $18,730
 $(10,121) $8,609

Developed-product-technology rights consistconsists of rights related to marketed products acquired in business combinations. Licensing rights consistconsists primarily of contractual rights acquired in business combinations to receive future milestone, royalty and profit sharingprofit-sharing payments; capitalized payments to third parties for milestones related to regulatory approvals to commercialize products; and up-front payments associated with royalty obligations for marketed products. During the six months ended June 30, 2018, licensingMarketing-related rights increased due to the K-A share acquisition. See Note 3, Business combinations. Marketing-related intangible assets consistconsists primarily of rights related to the sale and distribution of marketed products. R&DResearch and development (R&D) technology rights consist ofpertains to technology used in R&D withthat have alternative future uses.
In-process research and development (IPR&D) consists of R&D projects acquired in a business combination that are not complete at the time of acquisition due to remaining technological risks and/or lack of receipt of required regulatory approvals. As of June 30, 2018, IPR&D consists primarily of the oprozomib project, acquired in the acquisition of Onyx Pharmaceuticals, Inc., in 2013.
All IPR&D projects have major risks and uncertainties associated with the timely and successful completion of the development and commercialization of product candidates, including our ability to confirm safety and efficacy based on data from clinical trials, our ability to obtain necessary regulatory approvals and our ability to successfully complete these tasks within budgeted costs. We are not permitted to market a human therapeutic without obtaining regulatory approvals, and such approvals require the completion of clinical trials that demonstrate that a product candidate is safe and effective. In addition, the availability and extent of coverage and reimbursement from third-party payers, including government healthcare programs and private insurance plans as well as competitive product launches, affect the revenues a product can generate. Consequently, the eventual realized value, if any, of acquired IPR&D projects may vary from their estimated fair values. We review IPR&D projects for impairment annually, whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable and upon the establishment of technological feasibility or regulatory approval.

During the three months ended June 30, 20182019 and 2017,2018, we recognized amortization expense associated with our finite-lived intangible assets of $332$315 million and $371$332 million, respectively. During the six months ended June 30, 20182019 and 2017,2018, we recognized amortization expense associated with our finite-lived intangible assets of $652$630 million and $744$652 million, respectively. Amortization of intangible assets is included primarily in Cost of sales in the Condensed Consolidated Statements of Income. The total estimated amortization expense for our finite-lived intangible assets for the remaining six months ending December 31, 2018,2019, and the years ending December 31, 2019, 2020, 2021, 2022, 2023 and 2023,2024, are $0.7 billion, $1.3$0.6 billion, $1.2 billion, $1.0 billion, $0.9 billion, and $0.9 billion and $0.8 billion, respectively.
8. Leases
On January 1, 2019, we adopted a new accounting standard that amends the guidance for the accounting and reporting of leases. Certain required disclosures have been made on a prospective basis in accordance with the guidance of the standard. See Note 1, Summary of significant accounting policies.
We lease certain facilities and equipment related primarily to administrative, R&D and sales and marketing activities. Leases with lease terms of 12 months or less are expensed on a straight-line basis over the lease term and are not recorded in the Condensed Consolidated Balance Sheets.
Most leases include one or more options to renew, with renewal terms that may extend the lease term up to seven years. The exercise of lease renewal options is at our sole discretion. In addition, some of our lease agreements include rental payments adjusted periodically for inflation. Our lease agreements neither contain any residual value guarantees nor impose any significant restrictions or covenants. We sublease certain real estate to third parties. Our sublease portfolio consists of operating leases from former R&D and administrative space.
The following table summarizes information related to our leases, all of which are classified as operating, included in our Condensed Consolidated Balance Sheets (in millions):
Condensed Consolidated Balance Sheets locations June 30, 2019
Assets:  
Other assets $430
Liabilities:  
Accrued liabilities $134
Other noncurrent liabilities 363
Total lease liabilities $497
The components of net lease costs were as follows (in millions):
Lease costs Three months ended June 30, 2019 Six months ended
June 30, 2019
Operating(1)
 $51
 $99
Sublease income (9) (17)
Total net lease costs $42
 $82
____________
(1)
Includes short-term leases and variable lease costs, which were not material for the three and six months ended June 30, 2019.

11.Maturities of lease liabilities as of June 30, 2019, were as follows (in millions):
Maturity dates Operating leases
Remaining six months ending December 31, 2019 $69
2020 152
2021 132
2022 73
2023 62
Thereafter 48
Total lease payments(1)
 536
Less imputed interest (39)
Present value of lease liabilities $497
____________
(1)
Includes future rental commitments for abandoned leases of $200 million. We expect to receive total future rental income of $158 million related to noncancelable subleases for abandoned facilities.
The weighted-average remaining lease term and weighted-average discount rate of our leases were 4.2 years and 3.32%, respectively, as of June 30, 2019.
Cash and noncash information related to our leases was as follows (in millions):
  Three months ended June 30, 2019 Six months ended
June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities: 
  
Operating cash flows from operating leases $39
 $73
ROU assets obtained in exchange for lease obligations:    
Operating leases $46
 $54


9. Financing arrangements
Our borrowings consisted of the following (in millions):
 June 30,
2019
 December 31,
2018
5.70% notes due 2019 (5.70% 2019 Notes)$
 $1,000
1.90% notes due 2019 (1.90% 2019 Notes)
 700
Floating Rate Notes due 2019
 550
2.20% notes due 2019 (2.20% 2019 Notes)
 1,400
2.125% €675 million notes due 2019 (2.125% 2019 euro Notes)768
 774
4.50% notes due 2020 (4.50% 2020 Notes)300
 300
2.125% notes due 2020 (2.125% 2020 Notes)750
 750
Floating Rate Notes due 2020300
 300
2.20% notes due 2020 (2.20% 2020 Notes)700
 700
3.45% notes due 2020 (3.45% 2020 Notes)900
 900
4.10% notes due 2021 (4.10% 2021 Notes)1,000
 1,000
1.85% notes due 2021 (1.85% 2021 Notes)750
 750
3.875% notes due 2021 (3.875% 2021 Notes)1,750
 1,750
1.25% €1,250 million notes due 2022 (1.25% 2022 euro Notes)1,422
 1,433
2.70% notes due 2022 (2.70% 2022 Notes)500
 500
2.65% notes due 2022 (2.65% 2022 Notes)1,500
 1,500
3.625% notes due 2022 (3.625% 2022 Notes)750
 750
0.41% CHF700 million bonds due 2023 (0.41% 2023 Swiss franc Bonds)717
 713
2.25% notes due 2023 (2.25% 2023 Notes)750
 750
3.625% notes due 2024 (3.625% 2024 Notes)1,400
 1,400
3.125% notes due 2025 (3.125% 2025 Notes)1,000
 1,000
2.00% €750 million notes due 2026 (2.00% 2026 euro Notes)853
 860
2.60% notes due 2026 (2.60% 2026 Notes)1,250
 1,250
5.50% £475 million notes due 2026 (5.50% 2026 pound sterling Notes)603
 606
3.20% notes due 2027 (3.20% 2027 Notes)1,000
 1,000
4.00% £700 million notes due 2029 (4.00% 2029 pound sterling Notes)889
 893
6.375% notes due 2037 (6.375% 2037 Notes)552
 552
6.90% notes due 2038 (6.90% 2038 Notes)291
 291
6.40% notes due 2039 (6.40% 2039 Notes)466
 466
5.75% notes due 2040 (5.75% 2040 Notes)412
 412
4.95% notes due 2041 (4.95% 2041 Notes)600
 600
5.15% notes due 2041 (5.15% 2041 Notes)974
 974
5.65% notes due 2042 (5.65% 2042 Notes)487
 487
5.375% notes due 2043 (5.375% 2043 Notes)261
 261
4.40% notes due 2045 (4.40% 2045 Notes)2,250
 2,250
4.563% notes due 2048 (4.563% 2048 Notes)1,415
 1,415
4.663% notes due 2051 (4.663% 2051 Notes)3,541
 3,541
Other notes due 2097100
 100
Unamortized bond discounts, premiums and issuance costs, net(882) (896)
Fair value adjustments295
 (53)
Total carrying value of debt30,614
 33,929
Less current portion(2,816) (4,419)
Total long-term debt$27,798
 $29,510
 June 30,
2018
 December 31,
2017
6.15% notes due 2018 (6.15% 2018 Notes)$
 $500
4.375% €550 million notes due 2018 (4.375% 2018 euro Notes)642
 653
5.70% notes due 2019 (5.70% 2019 Notes)1,000
 1,000
1.90% notes due 2019 (1.90% 2019 Notes)700
 700
Floating Rate Notes due 2019550
 550
2.20% notes due 2019 (2.20% 2019 Notes)1,400
 1,400
2.125% €675 million notes due 2019 (2.125% 2019 euro Notes)789
 810
4.50% notes due 2020 (4.50% 2020 Notes)300
 300
2.125% notes due 2020 (2.125% 2020 Notes)750
 750
Floating Rate Notes due 2020300
 300
2.20% notes due 2020 (2.20% 2020 Notes)700
 700
3.45% notes due 2020 (3.45% 2020 Notes)900
 900
4.10% notes due 2021 (4.10% 2021 Notes)1,000
 1,000
1.85% notes due 2021 (1.85% 2021 Notes)750
 750
3.875% notes due 2021 (3.875% 2021 Notes)1,750
 1,750
1.25% €1,250 million notes due 2022 (1.25% 2022 euro Notes)1,461
 1,501
2.70% notes due 2022 (2.70% 2022 Notes)500
 500
2.65% notes due 2022 (2.65% 2022 Notes)1,500
 1,500
3.625% notes due 2022 (3.625% 2022 Notes)750
 750
0.41% CHF700 million bonds due 2023 (0.41% 2023 Swiss franc Bonds)707
 719
2.25% notes due 2023 (2.25% 2023 Notes)750
 750
3.625% notes due 2024 (3.625% 2024 Notes)1,400
 1,400
3.125% notes due 2025 (3.125% 2025 Notes)1,000
 1,000
2.00% €750 million notes due 2026 (2.00% 2026 euro Notes)876
 901
2.60% notes due 2026 (2.60% 2026 Notes)1,250
 1,250
5.50% £475 million notes due 2026 (5.50% 2026 pound sterling Notes)627
 642
3.20% notes due 2027 (3.20% 2027 Notes)
1,000
 1,000
4.00% £700 million notes due 2029 (4.00% 2029 pound sterling Notes)925
 946
6.375% notes due 2037 (6.375% 2037 Notes)552
 552
6.90% notes due 2038 (6.90% 2038 Notes)291
 291
6.40% notes due 2039 (6.40% 2039 Notes)466
 466
5.75% notes due 2040 (5.75% 2040 Notes)412
 412
4.95% notes due 2041 (4.95% 2041 Notes)600
 600
5.15% notes due 2041 (5.15% 2041 Notes)974
 974
5.65% notes due 2042 (5.65% 2042 Notes)487
 487
5.375% notes due 2043 (5.375% 2043 Notes)261
 261
4.40% notes due 2045 (4.40% 2045 Notes)2,250
 2,250
4.563% notes due 2048 (4.563% 2048 Notes)1,415
 1,415
4.663% notes due 2051 (4.663% 2051 Notes)3,541
 3,541
Other notes due 2097100
 100
Unamortized bond discounts, premiums, issuance costs and fair value adjustments, net(1,129) (929)
Total carrying value of debt34,497
 35,342
Less current portion(4,288) (1,152)
Total noncurrent debt$30,209
 $34,190

There are no material differences between the effective interest rates and coupon rates of any of our borrowings, except for the 4.563% 2048 Notes and the 4.663% 2051 Notes, which have effective interest rates of 6.3% and 5.6%, respectively.



12.10. Stockholders’ equity
Stock repurchase program
Activity under our stock repurchase program, on a trade date basis, was as follows (in millions):
 2019 2018
 Shares * Dollars  Shares Dollars
First quarter15.9
 $3,031
 56.4
 $10,787
Second quarter13.1
 2,349
 18.2
 3,190
Total stock repurchases28.9
 $5,380
 74.6
 $13,977

 2018 2017
 Shares Dollars  Shares Dollars
First quarter56.4
 $10,787
 3.4
 $555
Second quarter18.2
 3,190
 6.2
 1,006
   Total stock repurchases74.6
 $13,977
 9.6
 $1,561
* Total shares do not add due to rounding.
In January 2018, our Board of Directors authorized an increase of $10.0 billion available under our stock repurchase program. Repurchase activity for the three months ended March 31, 2018, included 52.1 million shares of our common stock acquired under a tender offer at an aggregate cost of $10.0 billion. In April 2018,May 2019, our Board of Directors increased the amount authorized under our stock repurchase program by an additional$5.0additional $5.0 billion. As of June 30, 2018, $5.42019, $4.7 billion of authorization remained available under our stock repurchase program.
Dividends
In March 20182019 and December 2017,2018, the Board of Directors declared quarterly cash dividends of $1.32$1.45 per share, of common stock, which were paid in June 20182019 and March 2018,2019, respectively.
Accumulated other comprehensive income (loss)
The components of AOCIAccumulated other comprehensive income (loss) (AOCI) were as follows (in millions):
 
Foreign
currency
translation
 
Cash flow
hedges
 
Available-for-sale
securities
 Other AOCI
Balance as of December 31, 2018$(670) $241
 $(338) $(2) $(769)
Foreign currency translation adjustments(13) 
 
 
 (13)
Unrealized gains
 30
 218
 
 248
Reclassification adjustments to income
 28
 4
 
 32
Income taxes
 (13) (1) 
 (14)
Balance as of March 31, 2019(683) 286
 (117) (2) (516)
Foreign currency translation adjustments(4) 
 
 
 (4)
Unrealized (losses) gains
 (96) 161
 
 65
Reclassification adjustments to income
 (36) 2
 
 (34)
Other
 
 
 6
 6
Income taxes
 28
 (10) 
 18
Balance as of June 30, 2019$(687) $182
 $36
 $4
 $(465)

 
Foreign
currency
translation
 
Cash flow
hedges
 
Available-for-sale
securities
 Other AOCI
Balance as of December 31, 2017$(529) $(6) $(144) $
 $(679)
Cumulative effect of change in accounting principle, net of tax(1)

 
 (9) 
 (9)
Foreign currency translation adjustments29
 
 
 
 29
Unrealized gains (losses)
 149
 (482) 
 (333)
Reclassification adjustments to income
 (130) 134
 
 4
Other
 
 
 2
 2
Income taxes
 (13) 5
 
 (8)
Balance as of March 31, 2018(500) 
 (496) 2
 (994)
Foreign currency translation adjustments(111) 
 
 
 (111)
Unrealized losses
 (34) (106) 
 (140)
Reclassification adjustments to income
 318
 115
 
 433
Other
 
 
 
 
Income taxes
 (61) 
 
 (61)
Balance as of June 30, 2018$(611) $223
 $(487) $2
 $(873)

____________
(1)
See Note 1, Summary of significant accounting policies, for additional information regarding the adoption on January 1, 2018, of the new accounting standard related to the classification and measurement of financial instruments and the related cumulative effect from the change in accounting principle.

Reclassifications out of AOCI and into earnings were as follows (in millions):
 Three months ended
June 30,
  Three months ended June 30, 
Components of AOCI 2018 2017 
Condensed Consolidated
Statements of Income locations
 2019 2018 
Condensed Consolidated
Statements of Income locations
Cash flow hedges:          
Foreign currency contract (losses) gains $(20) $33
 Product sales
Cross-currency swap contract (losses) gains (298) 297
 Interest and other income, net
Foreign currency contract gains (losses) $22
 $(20) Product sales
Cross-currency swap contract gains (losses) 14
 (298) Interest and other income, net
 (318) 330
 Income before income taxes 36
 (318) Income before income taxes
 68
 (117) Provision for income taxes (8) 68
 Provision for income taxes
 $(250) $213
 Net income $28
 $(250) Net income
Available-for-sale securities:          
Net realized losses $(115) $(47) Interest and other income, net $(2) $(115) Interest and other income, net
 1
 (2) Provision for income taxes 
 1
 Provision for income taxes
 $(114) $(49) Net income $(2) $(114) Net income
  Six months ended June 30,  
Components of AOCI 2019 2018 
Condensed Consolidated
Statements of Income locations
Cash flow hedges:      
Foreign currency contract gains (losses) $36
 $(54) Product sales
Cross-currency swap contract losses (28) (134) Interest and other income, net
  8
 (188) Income before income taxes
  (2) 40
 Provision for income taxes
  $6
 $(148) Net income
Available-for-sale securities:      
Net realized losses $(6) $(249) Interest and other income, net
  
 2
 Provision for income taxes
  $(6) $(247) Net income
  Six months ended
June 30,
  
Components of AOCI 2018 2017 Condensed Consolidated
Statements of Income locations
Cash flow hedges:      
  Foreign currency contract (losses) gains $(54) $90
 Product sales
  Cross-currency swap contract (losses) gains (134) 371
 Interest and other income, net
  (188) 461
 Income before income taxes
  40
 (164) Provision for income taxes
  $(148) $297
 Net income
Available-for-sale securities:      
  Net realized losses $(249) $(96) Interest and other income, net
  2
 (2) Provision for income taxes
  $(247) $(98) Net income

13.11. Fair value measurement
To estimate the fair value of our financial assets and liabilities, we use valuation approaches within a hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing an asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing an asset or liability and are developed based on the best information available in the circumstances. The fair value hierarchy is divided into three levels based on the source of inputs as follows:
Level 1Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access
Level 2Valuations for which all significant inputs are observable either directly or indirectly, indirectly—other than levelLevel 1 inputs
Level 3Valuations based on inputs that are unobservable and significant to the overall fair value measurement
The availability of observable inputs can vary among the various types of financial assets and liabilities. To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. In certain cases, the inputs used for measuring fair value may fall into different levels of the fair value hierarchy. In such cases, for financial statement disclosure purposes, the level in the fair value hierarchy within which the fair value measurement is categorized is based on the lowest level of input used that is significant to the overall fair value measurement.

The fair values of each major class of the Company’s financial assets and liabilities measured at fair value on a recurring basis were as follows (in millions):
  Quoted prices in
active markets for
identical assets
(Level 1)
 
Significant
other observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
  
      
Fair value measurement as of June 30, 2019, using:    Total
Assets:        
Interest-bearing securities:        
U.S. Treasury notes $2,717
 $
 $
 $2,717
U.S. Treasury bills 3,497
 
 
 3,497
Other government-related debt securities:        
U.S. 
 112
 
 112
Foreign and other 
 977
 
 977
Corporate debt securities:        
Financial 
 2,773
 
 2,773
Industrial 
 2,408
 
 2,408
Other 
 562
 
 562
Residential-mortgage-backed securities 
 1,333
 
 1,333
Other mortgage- and asset-backed securities 
 463
 
 463
Money market mutual funds 3,886
 
 
 3,886
Other short-term interest-bearing securities 
 2,389
 
 2,389
Equity securities 287
 
 
 287
Derivatives:        
Foreign currency contracts 
 205
 
 205
Cross-currency swap contracts 
 150
 
 150
Interest rate swap contracts 
 258
 
 258
Total assets $10,387
 $11,630
 $
 $22,017
         
Liabilities:        
Derivatives:        
Foreign currency contracts $
 $15
 $
 $15
Cross-currency swap contracts 
 515
 
 515
Contingent consideration obligations 
 
 63
 63
Total liabilities $
 $530
 $63
 $593
  Quoted prices in
active markets for
identical assets
(Level 1)
 
Significant
other observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
  
      
Fair value measurement as of June 30, 2018, using:    Total
Assets:        
Interest-bearing securities:        
U.S. Treasury securities $3,391
 $
 $
 $3,391
Other government-related debt securities:        
U.S. 
 128
 
 128
Foreign and other 
 1,390
 
 1,390
Corporate debt securities:        
Financial 
 3,968
 
 3,968
Industrial 
 3,839
 
 3,839
Other 
 676
 
 676
Residential-mortgage-backed securities 
 1,579
 
 1,579
Other mortgage- and asset-backed securities 
 652
 
 652
Money market mutual funds 7,341
 
 
 7,341
Other short-term interest-bearing securities 
 5,872
 
 5,872
Equity securities 200
 
 
 200
Derivatives:        
Foreign currency contracts 
 106
 
 106
Cross-currency swap contracts 
 272
 
 272
Total assets $10,932
 $18,482
 $
 $29,414
         
Liabilities:        
Derivatives:        
Foreign currency contracts $
 $65
 $
 $65
Cross-currency swap contracts 
 296
 
 296
Interest rate swap contracts 
 266
 
 266
Contingent consideration obligations 
 
 72
 72
Total liabilities $
 $627
 $72
 $699


  
Quoted prices in
active markets for
identical assets
(Level 1)
 
Significant
other observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
  
      
Fair value measurement as of December 31, 2018, using:    Total
Assets:        
Interest-bearing securities:        
U.S. Treasury notes $2,663
 $
 $
 $2,663
U.S. Treasury bills 8,191
 
 
 8,191
Other government-related debt securities:        
U.S. 
 110
 
 110
Foreign and other 
 932
 
 932
Corporate debt securities:        
Financial 
 2,697
 
 2,697
Industrial 
 2,504
 
 2,504
Other 
 562
 
 562
Residential-mortgage-backed securities 
 1,422
 
 1,422
Other mortgage- and asset-backed securities 
 469
 
 469
Money market mutual funds 5,659
 
 
 5,659
Other short-term interest-bearing securities 
 3,515
 
 3,515
Equity securities 176
 
 
 176
Derivatives:        
Foreign currency contracts 
 182
 
 182
Cross-currency swap contracts 
 170
 
 170
Interest rate swap contracts 
 56
 
 56
Total assets $16,689
 $12,619
 $
 $29,308
         
Liabilities:        
Derivatives:        
Foreign currency contracts $
 $26
 $
 $26
Cross-currency swap contracts 
 401
 
 401
Interest rate swap contracts 
 149
 
 149
Contingent consideration obligations 
 
 72
 72
Total liabilities $
 $576
 $72
 $648
  
Quoted prices in
active markets for
identical assets
(Level 1)
 
Significant
other observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
  
      
Fair value measurement as of December 31, 2017, using:    Total
Assets:        
Interest-bearing securities:        
U.S. Treasury securities $8,242
 $
 $
 $8,242
Other government-related debt securities:        
U.S. 
 223
 
 223
Foreign and other 
 2,422
 
 2,422
Corporate debt securities:        
Financial 
 10,072
 
 10,072
Industrial 
 9,670
 
 9,670
Other 
 1,390
 
 1,390
Residential-mortgage-backed securities 
 2,168
 
 2,168
Other mortgage- and asset-backed securities 
 2,297
 
 2,297
Money market mutual funds 3,245
 
 
 3,245
Other short-term interest-bearing securities 
 1,440
 
 1,440
Equity securities 149
 
 
 149
Derivatives:        
Foreign currency contracts 
 6
 
 6
Cross-currency swap contracts 
 270
 
 270
Interest rate swap contracts 
 10
 
 10
Total assets $11,636
 $29,968
 $
 $41,604
         
Liabilities:        
Derivatives:        
Foreign currency contracts $
 $204
 $
 $204
Cross-currency swap contracts 
 220
 
 220
Interest rate swap contracts 
 61
 
 61
Contingent consideration obligations 
 
 69
 69
Total liabilities $
 $485
 $69
 $554

Interest-bearing and equity securities
The fair values of our U.S. Treasury securities, money market mutual funds and equity securities are based on quoted market prices in active markets, with no valuation adjustment.
Most of our other government-related and corporate debt securities are investment grade and have maturity dates offiveyears or less from the balance sheet date. Our other government-related debt securities portfolio is composed of securities with weighted-average credit ratings of BBB+A– or equivalent by Standard & Poor’s Financial Services LLC (S&P), and A- or equivalent by Moody’s Investors Service, Inc. (Moody’s), or Fitch Ratings, Inc. (Fitch); and our corporate debt securities portfolio has a weighted-average credit ratingratings of A- or equivalentA– by Fitch and BBB+ or equivalent by S&P or Moody’s. We estimate the fair values of these securities by taking into consideration valuations obtained from third-party pricing services. The pricing services use industry standardindustry-standard valuation models, including both income- and market-based approaches, for which all significant inputs are observable either directly or indirectly to estimate fair value. The inputs include reported trades of and broker-dealer quotes on the same or similar securities; issuer credit spreads; benchmark securities; and other observable inputs.
Our residential-mortgage-, other-mortgage- and asset-backed-securities portfolio is composed entirely of senior tranches with credit ratings of AAA by S&P, Moody’s or Fitch. We estimate the fair values of these securities by taking into consideration valuations obtained from third-party pricing services. The pricing services use industry standardindustry-standard valuation models, including both income- and market-based approaches, for which all significant inputs are observable either directly or indirectly to estimate fair value. The inputs include reported trades of and broker-dealer quotes on the same or similar securities; issuer credit spreads; benchmark securities; prepayment or default projections based on historical data; and other observable inputs.

We value our other short-term interest-bearing securities at amortized cost, which approximates fair value given their near-term maturity dates.

Derivatives
All of our foreign currency forward and option derivative contracts have maturities of three years or less, and all are with counterparties that have minimum credit ratings of A-A– or equivalent by S&P, Moody’s or Fitch. We estimate the fair values of these contracts by taking into consideration valuations obtained from a third-party valuation service that uses an income-based industry standardindustry-standard valuation model for which all significant inputs are observable either directly or indirectly. These inputs include foreign currency exchange rates, the London Interbank Offered Rate (LIBOR), swap rates and obligor credit default swap rates. In addition, inputs for our foreign currency option contracts include implied volatility measures. These inputs, wherewhen applicable, are at commonly quoted intervals. See Note 14,12, Derivative instruments.
Our cross-currency swap contracts are with counterparties that have minimum credit ratings of A-A– or equivalent by S&P, Moody’s or Fitch. We estimate the fair values of these contracts by taking into consideration valuations obtained from a third-party valuation service that uses an income-based industry standardindustry-standard valuation model for which all significant inputs are observable either directly or indirectly. These inputs include foreign currency exchange rates, LIBOR, swap rates, obligor credit default swap rates and cross-currency basiscross-currency-basis swap spreads. See Note 14,12, Derivative instruments.
Our interest rate swap contracts are with counterparties that have minimum credit ratings of A-A– or equivalent by S&P, Moody’s or Fitch. We estimate the fair values of these contracts by using an income-based industry standardindustry-standard valuation model for which all significant inputs are observable either directly or indirectly. These inputs include LIBOR, swap rates and obligor credit default swap rates. See Note 14,12, Derivative instruments.
Contingent consideration obligations
As a result of our business acquisitions, we have incurred contingent consideration obligations, as discussed below.obligations. The contingent consideration obligations are recorded at their fair values by using probability-adjusted discounted cash flows, and we revalue these obligations each reporting period until the related contingencies have been resolved. The fair value measurements of these obligations are based on significant unobservable inputs related to licensing rights and product candidates acquired in business combinations, and they are reviewed quarterly by management in our R&D and commercial sales organizations. These inputs include, as applicable, estimated probabilities and timing of achieving specified regulatory and commercial milestones and estimated annual sales. Significant changes that increase or decrease the probabilities of achieving the related regulatory and commercial events, or that shorten or lengthen the time required to achieve such events, or that increase or decrease estimated annual sales would result in corresponding increases or decreases in the fair values of the obligations, as applicable. Changes in the fair values of contingent consideration obligations are recognized in Other operating expenses in the Condensed Consolidated Statements of Income.
Changes in the carrying amounts of contingent consideration obligations were as follows (in millions):
 Three months ended
June 30,
 Six months ended
June 30,
 2018 2017 2018 2017
Beginning balance$110
 $184
 $69
 $179
Addition from K-A acquisition
 
 45
 
Net changes in valuations(38) (2) (42) 3
Ending balance$72
 $182
 $72
 $182
As a result of our acquisition of BioVex Group, Inc., in 2011, we are obligated to pay its former shareholders additional consideration contingent upon achieving certain sales-related milestones with regard to IMLYGIC® (talimogene laherparepvec).
As a result of our acquisition of K-A in 2018, we are obligated to make single-digit-percentage royalty payments to Kirin contingent upon sales of brodalumab. See Note 3, Business combinations.
Duringfor the three and six months ended June 30, 2019 and 2018, were not material.
During the three and 2017,six months ended June 30, 2019 and 2018, there were no transfers of assets or liabilities between fair value measurement levels, and there were no material remeasurements to the fair values of assets and liabilities that are not measured at fair value on a recurring basis.

Summary of the fair values of other financial instruments
Cash equivalents
The fair values of cash equivalents approximate their carrying values due to the short-term nature of such financial instruments.
Borrowings
We estimated the fair values of our borrowings by using Level 2 inputs. As of June 30, 20182019 and December 31, 2017,2018, the aggregate fair values of our borrowings were $36.0$33.4 billion and $38.6$35.0 billion, respectively, and the carrying values were $34.5$30.6 billion and $35.3$33.9 billion, respectively.
14.
12. Derivative instruments
The Company is exposed to foreign currency exchange rate and interest rate risks related to its business operations. To reduce our risks related to such exposures, we use or have used certain derivative instruments, including foreign currency forward, foreign currency option, cross-currency swap, forward interest rate and interest rate swap contracts. We do not use derivatives for speculative trading purposes.
During the second quarter of 2018, we adopted early a new accounting standard that amends the accounting and reporting of hedging activities. Certain required disclosures have been made on a prospective basis in accordance with the guidance of the standard. See Note 1, Summary of significant accounting policies.
Cash flow hedges
We are exposed to possible changes in the values of certain anticipated foreign currency cash flows resulting from changes in foreign currency exchange rates associated primarily with our euro-denominated international product sales. Increases and decreases in the cash flows associated with our international product sales due to movements in foreign currency exchange rates are offset partially by corresponding increases and decreases in the cash flows from our international operating expenses resulting from these foreign currency exchange rate movements. To further reduce our exposure to foreign currency exchange rate fluctuations with regard to our international product sales, we enter into foreign currency forward and option contracts to hedge a portion of our projected international product sales primarily over a three-year time horizon, with, at any given point in time, a higher percentage of nearer-term projected product sales being hedged than in successive periods.
As of both June 30, 20182019 and December 31, 2017,2018, we had outstanding foreign currency forward contracts with aggregate notional amounts of $4.8$4.5 billion and $4.6 billion, respectively, andoutstanding foreign currency option contracts with aggregate notional amounts of $21 million and $74 million, respectively.million. We have designated these foreign currency forward and foreign currency option contracts, which are primarily euro based, as cash flow hedges. Accordingly, we report the unrealized gains and losses on these contracts in AOCI in the Condensed Consolidated Balance Sheets, and we reclassify them to Product sales in the Condensed Consolidated Statements of Income in the same periods during which the hedged transactions affect earnings.
To hedge our exposure to foreign currency exchange rate risk associated with certain of our long-term debt denominated in foreign currencies, we enter into cross-currency swap contracts. Under the terms of such contracts, we paid euros, pounds sterling and Swiss francs and received U.S. dollars for the notional amounts at the inception of the contracts; and based on these notional amounts, we exchange interest payments at fixed rates over the lives of the contracts by paying U.S. dollars and receiving euros, pounds sterling and Swiss francs. In addition, we will pay U.S. dollars to and receive euros, pounds sterling and Swiss francs from the counterparties at the maturities of the contracts for these same notional amounts. The terms of these contracts correspond to the related hedged debt, thereby effectively converting the interest payments and principal repayment on the debt from euros, pounds sterling and Swiss francs to U.S. dollars. We have designated these cross-currency swap contracts as cash flow hedges. Accordingly, the unrealized gains and losses on these contracts are reported in AOCI in the Condensed Consolidated Balance Sheets and reclassified to Interest and other income, net, in the Condensed Consolidated Statements of Income in the same periods during which the hedged debt affects earnings.

The notional amounts and interest rates of our cross-currency swaps as of June 30, 2018,2019, were as follows (notional amounts in millions):
  Foreign currency U.S. dollars
Hedged notes Notional amounts Interest rates Notional amounts Interest rates
2.125% 2019 euro Notes 675
 2.1% $864
 2.6%
1.25% 2022 euro Notes 1,250
 1.3% $1,388
 3.2%
0.41% 2023 Swiss franc Bonds CHF700
 0.4% $704
 3.4%
2.00% 2026 euro Notes 750
 2.0% $833
 3.9%
5.50% 2026 pound sterling Notes £475
 5.5% $747
 6.0%
4.00% 2029 pound sterling Notes £700
 4.0% $1,111
 4.5%

  Foreign currency U.S. dollars
Hedged notes Notional amounts Interest rates Notional amounts Interest rates
2.125% 2019 euro Notes 675
 2.125% $864
 2.6%
1.25% 2022 euro Notes 1,250
 1.25% $1,388
 3.2%
0.41% 2023 Swiss franc Bonds CHF700
 0.41% $704
 3.4%
2.00% 2026 euro Notes 750
 2.00% $833
 3.9%
5.50% 2026 pound sterling Notes £475
 5.50% $747
 6.0%
4.00% 2029 pound sterling Notes £700
 4.00% $1,111
 4.5%
In connection with the anticipated issuance of long-term fixed-rate debt, we occasionally enter into forward interest rate contracts in order to hedge the variability in cash flows due to changes in the applicable U.S. Treasury rate between the time we enter into these contracts and the time the related debt is issued. Gains and losses on forward interest rate contracts, which are designated as cash flow hedges, are recognized in AOCI in the Condensed Consolidated Balance Sheets and are amortized into Interest expense, net, in the Condensed Consolidated Statements of Income over the lives of the associated debt issuances. Amounts recognized in connection with forward interest rate swaps during the six months ended June 30, 2018,2019, and amounts expected to be recognized during the subsequent 12 months are not material.

The unrealized gains and losses recognized in AOCI for our derivative instruments designated as cash flow hedges were as follows (in millions):
  Three months ended
June 30,
 Six months ended
June 30,
Derivatives in cash flow hedging relationships 2019 2018 2019 2018
Foreign currency contracts $(16) $281
 $69
 $192
Cross-currency swap contracts (80) (315) (135) (77)
Total unrealized (losses) gains $(96) $(34) $(66) $115
  Three months ended
June 30,
 Six months ended
June 30,
Derivatives in cash flow hedging relationships 2018 2017 2018 2017
Foreign currency contracts $281
 $(203) $192
 $(250)
Cross-currency swap contracts (315) 217
 (77) 281
Forward interest rate contracts 
 3
 
 3
Total unrealized (losses) gains $(34) $17
 $115
 $34
The locations in the Condensed Consolidated Statements of Income and the gains and losses reclassified out of AOCI and into earnings for our derivative instruments designated as cash flow hedges were as follows (in millions):
    Three months ended
June 30,
 Six months ended
June 30,
Derivatives in cash flow hedging relationships 
Condensed Consolidated
Statements of Income locations
 2018 2017 2018 2017
Foreign currency contracts Product sales $(20) $33
 $(54) $90
Cross-currency swap contracts Interest and other income, net (298) 297
 (134) 371
Total realized (losses) gains   $(318) $330
 $(188) $461
No portions of our cash flow hedge contracts are excluded from the assessment of hedge effectiveness. As of June 30, 2018, the amount expected to be reclassified out of AOCI and into earnings during the next 12 months is $119 million of net losses on our foreign currency and cross-currency swap contracts.
Fair value hedges
To achieve a desired mix of fixed-rate and floating-rate debt, we entered into interest rate swap contracts that qualified for and were designated as fair value hedges. The terms of theseThese interest rate swap contracts correspond to the related hedged debt and effectively convertedconvert fixed-rate coupons to floating-rate LIBOR-based coupons over the livesterms of the respective notes.related hedge contracts. As of June 30, 20182019 and December 31, 2017,2018, we had interest rate swap contracts with an aggregate notional amountamounts of $9.45$9.55 billion and $10.95 billion respectively, that hedge certain portions of our long-term debt issuances. The contracts have rates that range from three-month LIBOR plus 0.3% to three-month LIBOR plus 2.0%.
For interest rate swap contracts that qualify for and are designated as fair value hedges, we recognize in Interest expense, net, in the Condensed Consolidated Statements of Income the unrealized gain or loss on the derivative resulting from the change

in fair value during the period, as well as the offsetting unrealized loss or gain of the hedged item resulting from the change in fair value during the period attributable to the hedged risk. If a hedging relationship involving an interest rate swap contract is terminated, the gain or loss realized on contract termination is recorded as an adjustment to the carrying value of the debt and amortized into Interest expense, net, over the remaining life of the previously hedged debt.
Net unrealized gains and losses on our outstanding interest rate swap contracts were as follows (in millions):
  Three months ended
June 30,
 Six months ended
June 30,
Derivatives in fair value hedging relationships 2018 2017 2018 2017
Net unrealized (losses) gains recognized for interest rate swap contracts $(51) $37
 $(215) $18
Net unrealized gains (losses) recognized for related hedged debt $51
 $(37) $215
 $(18)
The hedged liabilities and related cumulative-basis adjustments for fair value hedges of those liabilities were recorded in the Condensed Consolidated Balance Sheets as follows (in millions):
 
Carrying amounts of hedged liabilities(1)
 
Cumulative amounts of fair value hedging adjustments related to the carrying amounts of the hedged liabilities(2)
 
Carrying amounts of hedged liabilities(1)
 
Cumulative amounts of fair value hedging adjustments related to the carrying amounts of the hedged liabilities(2)
 June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017
Condensed Consolidated Balance Sheets locations June 30, 2019 December 31, 2018 June 30, 2019 December 31, 2018
Current portion of long-term debt $2,398
 $500
 $
 $23
 $
 $2,396
 $
 $(3)
Long-term debt $7,905
 $10,516
 $(217) $(11) $9,712
 $9,361
 $295
 $(50)
____________ 
(1)
Current portion of long-term debt includes $1.0 billion of carrying value with discontinued hedging relationships as of December 31, 2018. Long-term debt includes $136 million and $500$137 million of carrying value with discontinued hedging relationships as of June 30, 20182019 and December 31, 2017, respectively. Long-term debt includes $137 million and $1.1 billion of carrying value with discontinued hedging relationships as of June 30, 2018, and December 31, 2017, respectively.
(2) 
Current portion of long-term debt includes $11$3 million of hedging adjustments on discontinued hedging relationships as of December 31, 2018. Long-term debt includes $36 million and $23$37 million of hedging adjustments on discontinued hedging relationships as of June 30, 20182019 and December 31, 2017, respectively. Long-term debt includes $37 million and $40 million of hedging adjustments on discontinued hedging relationships as of June 30, 2018, and December 31, 2017, respectively.
Impact of hedging transactions
The following table summarizestables summarize the amounts ofrecorded in income and expense line items and the effects thereon from fair value and cash flow hedging, including discontinued hedging relationships (in millions):

 Three months ended June 30, 2018 Six months ended June 30, 2018 Three months ended June 30, 2019 Six months ended June 30, 2019
 Product sales Interest and other income, net Interest (expense), net Product sales Interest and other income, net Interest (expense), net Product sales Interest and other income, net Interest (expense), net Product sales Interest and other income, net Interest (expense), net
Total amounts of income and (expense) line items presented in the Condensed Consolidated Statements of Income $5,679
 $162
 $(347) $11,022
 $393
 $(685)
Total amounts recorded in income and (expense) line items presented in the Condensed Consolidated Statements of Income $5,574
 $218
 $(332) $10,860
 $403
 $(675)
The effects of cash flow and fair value hedging:                        
Losses on cash flow hedging relationships reclassified out of AOCI:            
Gains (losses) on cash flow hedging relationships reclassified out of AOCI:            
Foreign currency contracts $(20) $
 $
 $(54) $
 $
 $22
 $
 $
 $36
 $
 $
Cross-currency swap contracts $
 $(298) $
 $
 $(134) $
 $
 $14
 $
 $
 $(28) $
Gains (losses) on fair value hedging relationships—interest rate swap agreements:            
(Losses) gains on fair value hedging relationships—interest rate swap agreements:            
Hedged items(1)
 $
 $
 $58
 $
 $
 $230
 $
 $
 $(218) $
 $
 $(348)
Derivatives designated as hedging instruments $
 $
 $(51) $
 $
 $(215) $
 $
 $218
 $
 $
 $351
  Three months ended June 30, 2018 Six months ended June 30, 2018
  Product sales Interest and other income, net Interest (expense), net Product sales Interest and other income, net Interest (expense), net
Total amounts recorded in income and (expense) line items presented in the Condensed Consolidated Statements of Income $5,679
 $162
 $(347) $11,022
 $393
 $(685)
The effects of cash flow and fair value hedging:            
Losses on cash flow hedging relationships reclassified out of AOCI:            
Foreign currency contracts $(20) $
 $
 $(54) $
 $
Cross-currency swap contracts $
 $(298) $
 $
 $(134) $
Gains (losses) on fair value hedging relationships—interest rate swap agreements:            
Hedged items(1)
 $
 $
 $58
 $
 $
 $230
Derivatives designated as hedging instruments $
 $
 $(51) $
 $
 $(215)
__________ 
(1) 
The amounts include benefits of $7 million and $15 millionGains (losses) on hedged items do not completely offset (losses) gains on the related designated hedging instruments due to the amortization of the cumulative amountamounts of fair value hedging adjustments included in the carrying amount of the hedged debt for discontinued hedging relationships for the three and six months ended June 30, 2018, respectively.relationships.

No portions of our cash flow hedge contracts were excluded from the assessment of hedge effectiveness. As of June 30, 2019, we expected to reclassify $86 million of net losses on our foreign currency and cross-currency swap contracts out of AOCI and into earnings during the next 12 months.
Derivatives not designated as hedges
To reduce our exposure to foreign currency fluctuations ofin certain assets and liabilities denominated in foreign currencies, we enter into foreign currency forward contracts that are not designated as hedging transactions. TheseMost of these exposures are hedged on a month-to-month basis. As of June 30, 20182019 and December 31, 2017,2018, the total notional amounts of these foreign currency forward contracts were $268 million$1.2 billion and $757 million,$0.7 billion, respectively. The fair values of these derivatives as of June 30, 2018Gains and December 31, 2017, were not material.
The location in the Condensed Consolidated Statements of Income and the amounts of gainslosses recognized in earnings for our derivative instruments not designated as hedging instruments were as follows (in millions):not material for the three and six months ended June 30, 2019 and 2018.
     Three months ended
June 30,
 Six months ended
June 30,
Derivatives not designated as hedging instruments 
Condensed Consolidated
Statements of Income location
 2018 2017 2018 2017
Foreign currency contracts Interest and other income, net $26
 $13
 $33
 $14

The fair values of derivatives included in the Condensed Consolidated Balance Sheets were as follows (in millions):
 Derivative assets Derivative liabilities Derivative assets Derivative liabilities
June 30, 2018 
Condensed Consolidated
Balance Sheet locations
 Fair values Condensed Consolidated
Balance Sheet locations
 Fair values
June 30, 2019 
Condensed Consolidated
Balance Sheets locations
 Fair values Condensed Consolidated
Balance Sheets locations
 Fair values
Derivatives designated as hedging instruments:        
Foreign currency contracts Other current assets/ Other assets $106
 Accrued liabilities/ Other noncurrent liabilities $65
 Other current assets/ Other assets $203
 Accrued liabilities/ Other noncurrent liabilities $15
Cross-currency swap contracts Other current assets/ Other assets 272
 Accrued liabilities/ Other noncurrent liabilities 296
 Other current assets/ Other assets 150
 Accrued liabilities/ Other noncurrent liabilities 515
Interest rate swap contracts Other current assets/ Other assets 
 Accrued liabilities/ Other noncurrent liabilities 266
 Other current assets/ Other assets 258
 Accrued liabilities/ Other noncurrent liabilities 
Total derivatives designated as hedging instruments $378
 $627
 611
 530
Derivatives not designated as hedging instruments:    
Foreign currency contracts Other current assets 2
 Accrued liabilities 
Total derivatives not designated as hedging instruments 2
 
Total derivatives $613
 $530
  Derivative assets Derivative liabilities
December 31, 2018 
Condensed Consolidated
Balance Sheets locations
 Fair values Condensed Consolidated
Balance Sheets locations
 Fair values
Derivatives designated as hedging instruments:        
Foreign currency contracts Other current assets/ Other assets $181
 Accrued liabilities/ Other noncurrent liabilities $26
Cross-currency swap contracts Other current assets/ Other assets 170
 Accrued liabilities/ Other noncurrent liabilities 401
Interest rate swap contracts Other current assets/ Other assets 56
 Accrued liabilities/ Other noncurrent liabilities 149
Total derivatives designated as hedging instruments   407
   576
Derivatives not designated as hedging instruments:        
Foreign currency contracts Other current assets 1
 Accrued liabilities 
Total derivatives not designated as hedging instruments   1
   
Total derivatives   $408
   $576
  Derivative assets Derivative liabilities
December 31, 2017 
Condensed Consolidated
Balance Sheet locations
 Fair values Condensed Consolidated
Balance Sheet locations
 Fair values
Derivatives designated as hedging instruments:        
Foreign currency contracts Other current assets/ Other assets $6
 Accrued liabilities/ Other noncurrent liabilities $204
Cross-currency swap contracts Other current assets/ Other assets 270
 Accrued liabilities/ Other noncurrent liabilities 220
Interest rate swap contracts Other current assets/ Other assets 10
 Accrued liabilities/ Other noncurrent liabilities 61
Total derivatives designated as hedging instruments   $286
   $485

Our derivative contracts that were in liability positions as of June 30, 2018,2019, contain certain credit-risk-related contingent provisions that would be triggered if (i) we were to undergo a change in control and (ii) our or the surviving entity’s creditworthiness deteriorates, which is generally defined as having either a credit rating that is below investment grade or a materially weaker creditworthiness after the change in control. If these events were to occur, the counterparties would have the right but not the obligation to close the contracts under early-termination provisions. In such circumstances, the counterparties could request immediate settlement of these contracts for amounts that approximate the then current fair values of the contracts. In addition, our derivative contracts are not subject to any type of master netting arrangement, and amounts due either to or from a counterparty

under the contracts may be offset against other amounts due either to or from the same counterparty only if an event of default or termination, as defined, were to occur.
The cash flow effects of our derivative contracts are included withinin Net cash provided by operating activities in the Condensed Consolidated Statements of Cash Flows.
15.
13. Contingencies and commitments
Contingencies
In the ordinary course of business, we are involved in various legal proceedings, government investigations and other matters that are complex in nature and have outcomes that are difficult to predict. See our Annual Report on Form 10-K for the year ended December 31, 2017,2018, Part I, Item 1A. Risk Factors—Our business may be affected by litigation and government investigations.We describe our legal proceedings and other matters that are significant or that we believe could become significant in this footnote; in Note 18,20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017;2018; and in Note 14,13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ended March 31, 2018.2019.
We record accruals for loss contingencies to the extent that we conclude it is probable that a liability has been incurred and the amount of the related loss can be reasonably estimated. We evaluate, on a quarterly basis, developments in legal proceedings and other matters that could cause an increase or decrease in the amount of the liability that has been accrued previously.
Our legal proceedings involve various aspects of our business and a variety of claims—including but not limited to patent validity and infringement, regulatory standards, and other matters—claims, some of which present novel factual allegations and/or unique legal theories. In each of the matters described in this filing, in Note 18,20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017,2018, or in Note 14,13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period endingended March 31, 2018, plaintiffs2019, in which we could incur a liability, our opponents seek an award of a not-yet-quantified amount of damages or an amount that is not material. In addition, a number of the matters pending against us are at very early stages of the legal process, which in complex proceedings of the sort we face often extend for several years. As a result, none of the matters pending against us described in this filing, in Note 18,20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017,2018, or in Note 14,13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period endingended March 31, 2018,2019, in which we could incur a liability, have progressed sufficiently through discovery and/or the development of important factual information and legal issues to enable us to estimate a range of possible loss, if any, or such amounts are not material. While it is not possible to accurately predict or determine the eventual outcomes of these matters, an adverse determination in one or more of these matters currently pending could have a material adverse effect on our consolidated results of operations, financial position or cash flows.
Certain recent developments concerning our legal proceedings and other matters are discussed below:
PCSK9 AntibodyNovartis Breach of Contract Action
On July 16, 2019, Novartis Pharma AG (Novartis) filed an amended complaint in the U.S. District Court for the Southern District of New York adding a claim for breach of contract alleging Novartis is owed amounts associated with 2018 budget overruns and Amgen responded with a counterclaim alleging additional breaches by Novartis of the collaboration agreements between the parties.
Repatha® (evolocumab) Patent Litigation
U.S. Patent Litigation-Sanofi/Regeneron
As previously disclosed, the U.S. Court of Appeals for the Federal Circuit denied Amgen’s petition for rehearing en bancOn June 6, 13 and issued a March 2, 2018 mandate returning the case to21, 2019, the U.S. District Court for the District of Delaware (the Delaware District Court) held evidentiary hearings on Amgen’s motion for a new trialpermanent injunction against PRALUENT®. The Delaware District Court has scheduled an August 8, 2019 hearing on twothe post-trial motion for a judgment notwithstanding the jury verdict filed by Sanofi, Sanofi-Aventis U.S. LLC, Aventisub LLC, formerly doing business as Aventis Pharmaceuticals Inc., and Regeneron Pharmaceuticals, Inc.
Sensipar® (cinacalcet) Litigation
Cipla Ltd. v. Amgen Inc.
On May 2, 2019, the Delaware District Court denied Amgen’s motion for preliminary injunction in the lawsuit by Cipla Limited and Cipla USA, Inc. (collectively, Cipla) seeking a declaration that provisions of its settlement agreement with Amgen have been triggered by the at-risk launch of a generic cinacalcet product by Teva Pharmaceutical Industries Ltd. (Teva). On the same day, Amgen filed its notice of appeal of the defendants’ challenges to the validityDelaware District Court’s denial of Amgen’s patents (lackmotion for preliminary injunction in the United States Court of written description and enablementAppeals for the Third Circuit (the Third Circuit Court of the claimed inventions) and for further consideration of a permanent injunction.Appeals). On July 23, 2018,May 3, 2019, Amgen filed a petitionmotion for certiorari withinjunction pending appeal in the Delaware District Court, which was denied on May 9, 2019. On May 13, 2019, Amgen filed a motion for injunction pending appeal and expedited briefing in the Third Circuit Court of Appeals. On May 23, 2019, the Third Circuit Court of Appeals denied the motion for injunction pending appeal and granted the request for expedited briefing. On July 16, 2019, the Third Circuit Court of Appeals affirmed the Delaware District Court’s decision denying Amgen’s motion for a preliminary injunction. With respect to Cipla’s pending claims, the Delaware District Court has given Cipla until July 31, 2019 to amend its complaint.

Amgen Inc. v. Amneal Pharmaceuticals LLC, et al. Abbreviated New Drug Application (ANDA) Patent Litigation
On June 13, 2019, the Delaware District Court held a hearing on the motion filed by Sun Pharma Global FZE, Sun Pharmaceutical Industries, Ltd. and Sun Pharmaceutical Industries, Inc. (collectively, Sun) to enforce the settlement agreement entered between Amgen and Sun. By its complaint, Sun is contending that its generic cinacalcet product should not be held off the U.S. Supreme Court seeking review ofmarket.
On July 17, 2019, Amgen filed a motion requesting the U.S. Court of Appeals for the Federal Circuit conclusion that(the Federal Circuit Court) to vacate the Delaware District Court’s noninfringement judgment affirming the validityin favor of Amgen’s patents was based, in part, on an erroneous applicationWatson Laboratories, Inc. and Actavis Pharma, Inc. and direct entry of the law of written description.parties’ proposed consent judgment.
SensiparKYPROLIS® (cinacalcet) Litigation
Sensipar® Abbreviated New Drug Application (ANDA) (carfilzomib) ANDA Patent Litigation
As previously disclosed,On May 6, 2019, the Delaware District Court heldcommenced trial on the infringement claims and defenses in the AmgenOnyx Therapeutics, Inc. v. Aurobindo Pharma Ltd.Cipla Limited., et al.al. consolidated lawsuit. Post-trial briefing on the infringement claims and defenses was completed oncase. On May 18, 2018.
On June 12, 2018,7, 2019, the Delaware District Court entered an order dismissing the lawsuitsigned consent judgments filed in December 2017 against Torrent Pharmaceuticals Ltd. on stipulation between the parties and subjectprior to the terms of a confidential settlement agreement.

In June 2018, Amgen filed lawsuits in the Delaware District Court and the U.S. District Court for the Middle District of North Carolina, each against Accord Healthcare, Inc. and Intas Pharmaceuticals Ltd. (collectively, Accord) for infringement of our U.S. Patent No. 9,375,405 (the ’405 Patent). In each lawsuit, Amgen seeks an order making any U.S. Food and Drug Administration (FDA) approval of Accord’s generic version of Sensipar® effective no earlier than the expiration of the ’405 Patent in 2026.
Sensipar® Pediatric Exclusivity Litigation
As previously disclosed, on February 17, 2018, the U.S. District Court for the District of Columbia entered final judgment for the FDA in the lawsuit filedtrial by Amgen seeking effectively to reverse the FDA’s May 22, 2017 rejection of Amgen’s request for pediatric exclusivity for cinacalcet hydrochloride (Sensipar®/ Mimpara®). A grant of pediatric exclusivity by the FDA would have provided Amgen with an additional six months of exclusivity (i.e., through September 8, 2018) following the March 8, 2018 expiration of Amgen’s U.S. composition of matter patent. Oral arguments in the U.S. Court of Appeals for the District of Columbia Circuit on Amgen’s appeal of the final judgment took place on May 17, 2018.
KYPROLIS® (carfilzomib) ANDA Patent Litigation
During May, June and July of 2018, the Delaware District Court entered orders on stipulations between Onyx Therapeutics, Inc. (Onyx Therapeutics) and each of Aurobindo Pharma USA, Inc. (Aurobindo); InnoPharma Inc. (InnoPharma); Sagent Pharmaceuticals, Inc. (Sagent); Apotex Inc. and Apotex Corp. (collectively, Apotex); Fresenius Kabi USA, Inc. and Fresenius Kabi USA, LLC (collectively, Fresenius) and Fresenius Kabi USA, Inc.; Breckenridge Pharmaceutical, Inc.; Aurobindo Pharma USA, Inc.; Cipla Limited and Cipla USA, Inc. (collectively, Cipla); and Innopharma, Inc., respectively,signed a consent judgment filed that each defendant infringes U.S. Patent Nos. 7,417,042; 7,737,112 (the ’112 Patent); 8,207,125; 8,207,126; and 8,207,127. Onyx Therapeutics had previously provided those defendants a covenant that it would not assert patent infringement of U.S. Patent Nos. 7,232,818; 7,491,704; 8,129,346; and 8,207,297 against certain of the respective defendants’ ANDA applications and products. On June 4, 2018, the Delaware District Court also entered an order on a stipulation betweensame day by Onyx Therapeutics and MSN Laboratories Private Limited and MSN Pharmaceuticals, Inc. (collectively, MSN), that MSN infringes the ’112 Patent. In June and July 2018,. On May 14, 2019, the Delaware District Court consolidated for purposes of discovery into the existing consolidated case signed consent judgments filed during trial by Onyx Therapeutics and each of Dr. Reddy’s Laboratories, Inc. v. Cipla Limited, et al., the lawsuits that were filed againstand Dr. Reddy’s Laboratories, Ltd. (collectively, DRL) and Dr. Reddy’s Laboratories,Breckenridge Pharmaceutical, Inc. in December 2017; against(Breckenridge). In the consent judgments between Onyx Therapeutics and each of Aurobindo, InnoPharma, Sagent, Apotex, Corp.Fresenius, DRL, and Apotex Inc. in January 2018; against Breckenridge, Pharmaceuticals, Inc. in February 2018;the parties stipulated to entry of: (1) judgment dismissing with prejudice all of the parties’ claims, counterclaims, affirmative defenses and against Cipla in April 2018, respectively.demands; and (2) an injunction prohibiting infringement of U.S. Patent Nos. 7,417,042; 7,737,112 (the ’112 Patent); and 8,207,125 by the manufacture, use, sale, offer to sell, or importation into the United States of the applicable defendant’s carfilzomib product unless specifically authorized pursuant to the applicable confidential settlement agreement. In the consent judgment between Onyx Therapeutics and MSN, the parties stipulated to entry of: (1) judgment dismissing with prejudice all of the parties’ claims, counterclaims, affirmative defenses and demands; and (2) an injunction prohibiting infringement of the ’112 Patent by the manufacture, use, sale, offer to sell, or importation into the United States of MSN’s carfilzomib product unless specifically authorized pursuant to the confidential settlement agreement. On May 16, 2019, trial concluded between Onyx Therapeutics and the lone remaining defendant, Cipla. The parties await the judgment of the Delaware District Court.
NEUPOGEN® (filgrastim)/ Neulasta® (pegfilgrastim) Patent Litigation
Adello NEUPOGENCoherus Neulasta® Patent Litigation
As previously disclosed,On July 29, 2019, the Federal Circuit Court affirmed the Delaware District Court’s final judgment dismissing Amgen’s lawsuit against Coherus BioSciences, Inc. (Coherus) for infringement of U.S. Patent No. 8,273,707.
Sandoz NEUPOGEN® / Neulasta® Patent Litigation
On May 8, 2019, the Federal Circuit Court affirmed the U.S. District Court for the Northern District of California’s grant of summary judgment of noninfringement of U.S. Patent Nos. 8,940,878 and 6,162,427 by Sandoz Inc., Sandoz International GmbH and Sandoz GmbH. On June 7, 2019, Amgen Inc. and Amgen Manufacturing, Ltd. (collectively, Amgen)Limited (AML) filed a patent infringementpetition for rehearing en banc in the Federal Circuit Court.
On May 13, 2019, Sandoz Inc. voluntarily dismissed, without prejudice, the separate lawsuit it had filed in the U.S. District Court for the Northern District of California against Amgen and AML seeking a judgment of noninfringement and invalidity of the U.S. Patent No. 9,643,997 (the ’997 Patent).
Mylan Neulasta® Patent Litigation
On June 13, 2019, the District Court for the Western District of Pennsylvania granted the request by Mylan Inc., Mylan Pharmaceuticals Inc., Mylan GmbH, and Mylan N.V. (collectively, Mylan) for a temporary stay pending the outcome of Amgen’s Federal Circuit Court appeal in the Coherus Neulasta® Patent Litigation, and Amgen’s petition for en banc review of the Federal Circuit Court’s May 8, 2019 decision in the Sandoz NEUPOGEN® / Neulasta® Patent Litigation (each case discussed above).

Tanvex NEUPOGEN® Patent Litigation
On July 23, 2019, Amgen filed a lawsuit in the U.S. District Court for the Southern District of New JerseyCalifornia against AdelloTanvex BioPharma USA, Inc., Tanvex BioPharma, Inc., and Tanvex Biologics LLC (Adello). On May 17, 2018, Adello responded to the lawsuit, denying infringement and seeking judgment that the patents-in-suit are invalid and not infringed.
Coherus Neulasta® Patent Litigation
As previously disclosed, the Delaware District Court entered final judgment dismissing Amgen’s complaint against Coherus BioSciences, Inc. (Coherus)Corp. (collectively, Tanvex) for infringement of our U.S. Patent No. 8,273,707. On May 17, 2018, Amgen filed an appeal9,856,287 (the ’287 Patent) in accordance with the patent provisions of the Delaware District Court’s judgment.
Pfizer NEUPOGEN® Patent Litigation
On July 18, 2018, Amgen Inc.Biologics Price Competition and Amgen Manufacturing Ltd. (collectively, Amgen) filed a lawsuit in the Delaware District Court against Pfizer Inc. and Hospira Inc. (collectively, Pfizer)Innovation Act (BPCIA). This lawsuit stems from Pfizer’s submissionTanvex’s submissions of an application for FDAU.S. Food and Drug Administration (FDA) licensure of a filgrastim product as biosimilar to Amgen’s NEUPOGEN®. By its complaint, Amgen has asserted infringement of U.S. Patent No. 9,643,997 and seeks, among other remedies, injunctive reliefan injunction prohibiting Tanvex from infringing the ’287 Patent.
Coherus Neulasta® Trade Secret Litigation
Following a May 1, 2019 settlement between Amgen and Coherus, on May 2, 2019, pursuant to prohibit Pfizer from practicinga joint request regarding settlement, the patented invention prior toVentura County Superior Court dismissed Amgen’s claims against Coherus with prejudice.
Patent Trial and Appeal Board Patent Challenges
On May 20, 2019, the expiry of this patent.
ENBREL (etanercept) Litigation
Coherus ENBRELU.S. Patent Challenge
As previously disclosed, theand Trademark Office’s Patent Trial and Appeal Board (PTAB) issued a decision denying Apotex’s request for rehearing on the PTAB’s finding and sua sponte amending the final decision with a finding the one remaining claim in Amgen’s U.S. Patent No. 8,952,138 is unpatentable. On July 22, 2019, Amgen filed a notice of appeal to the Federal Circuit Court with respect to all claims held to be unpatentable.
On June 8, 2019, Fresenius Kabi USA, LLC and Fresenius Kabi SwissBioSim GmbH filed a petition seeking to institute inter partes review (IPR) proceedings before the PTAB to challenge the patentability of the U.S.’997 Patent. The ’997 Patent is also among the patents at issue in the Mylan Neulasta® Patent Litigation, the previously-disclosed litigation between Amgen and Trademark Office denied Coherus’ petitionsKashiv Biosciences, LLC (formerly known as Adello Biologics, LLC), Amneal Pharmaceuticals LLC, and Amneal Pharmaceuticals, Inc., and the previously-disclosed litigation between Amgen and Pfizer Inc. and Hospira Inc. Amgen’s patent owner preliminary response to this IPR petition is due September 11, 2019, after which the PTAB will have three months to render a decision regarding whether to institute inter partes reviewPTAB trial proceedings on U.S. Patent Nos. 8,163,522 and 8,063,182 and Coherus filed requests for rehearing on these two denied petitions. On July 13, 2018 the PTAB denied both requests for rehearing.’997 Patent.
MVASI(bevacizumab-awwb) Patent Litigation Relating to our Biosimilar Products
AMJEVITATM (adalimumab-atto) / AMGEVITATM Patent Litigation
As previously disclosed, Amgen has been sued in a number of European countries by Fresenius Kabi Deutschland GmbH (Fresenius), alleging that AMGEVITATM infringes various patents of Fresenius and seeking, among other remedies, injunctive relief prohibiting patent infringement. In May 2019, the parties acted jointly, to the extent necessary, to withdraw from and/or seek dismissal of the lawsuits.
KANJINTITM (trastuzumab) Patent Litigation
On July 10, 2019, Genentech, Inc. (Genentech) and City of Hope filed lawsuits ina motion asking the Delaware District Court allegingfor a temporary restraining order and preliminarily injunction prohibiting Amgen from commercially launching, marketing or selling KANJINTITM until the Delaware District Court renders a decision on the merits of Genentech’s asserted U.S. Patent Nos. 6,627,196; 7,371,379; and 10,160,811. Following Amgen’s opposition, on July 18, 2019, the Delaware District Court denied Genentech’s motion. On July 19, 2019, Genentech filed a notice of appeal and a motion requesting the Federal Circuit Court to enter an injunction prohibiting Amgen from continuing with its launch of KANJINTITM until final resolution of Genentech’s appeal. On July 24, 2019, the Delaware District Court entered an order dismissing City of Hope as a party to the lawsuit and dismissing with prejudice Genentech’s claims for infringement of a number of expired patents, listedleaving eight patents asserted by Genentech in the Biologics Price Competition and Innovation Act (BPCIA) exchangelitigation.

MVASITM(bevacizumab-awwb) Patent Litigation
by MVASI,On July 10, 2019, Genentech, alleging that Amgen’s biosimilar versionnotice of Avastin® (bevacizumab), and for non-compliance with certain provisions of the BPCIA. On June 5, 2018, Amgen respondedcommercial marketing pursuant to the complaint denying patent infringementBPCIA is insufficient, filed motions asking the Delaware District Court for a temporary restraining order and any violationenforcement of the BPCIA to prohibit Amgen from commercially marketing MVASITM until Amgen has provided new notice and seeking judgmentwaited until the expiry of the notice period. Following Amgen’s opposition, on July 18, 2019, the Delaware District Court denied Genentech’s motions. On July 19, 2019, Genentech filed a notice of appeal and a motion requesting the Federal Circuit Court to enter an injunction prohibiting Amgen from marketing MVASITM until final resolution of Genentech’s appeal.

Antitrust Class Actions
Humira® Biosimilar Antitrust Class Actions
As previously disclosed, in March and April 2019, ten purported class actions against Amgen, along with AbbVie Inc. and AbbVie Biotechnology Ltd. (collectively, AbbVie), were filed in U.S. District Court for the Northern District of Illinois (the Illinois Northern District Court). In April and May 2019, two additional purported class actions against Amgen and AbbVie were filed in the Illinois Northern District Court. The additional cases are captioned: Louisiana Health Service & Indemnity Co., d/b/a Blue Cross and Blue Shield of Louisiana, and HMO Louisiana, Inc. v. AbbVie Inc., et al. (April 30, 2019) (Louisiana Health); and Cleveland Bakers and Teamsters Health and Welfare Fund v. AbbVie Inc., et al. (May 10, 2019) (Cleveland Bakers, and together with Louisiana Health, the New Humira® Antitrust Class Actions). In each of the New Humira® Antitrust Class Actions, the plaintiffs bring federal antitrust claims along with various state law claims under common law and antitrust, consumer protection, and unfair competition statutes. The plaintiffs in the New Humira® Antitrust Class Actions specifically allege that AbbVie has unlawfully monopolized the patents-in-suit are invalid, unenforceablealleged market for Humira® and biosimilars of Humira®, including by creating an allegedly unlawful so-called patent thicket around Humira®. The plaintiffs in the New Humira® Antitrust Class Actions allege that AbbVie and Amgen entered into an allegedly unlawful settlement agreement under which Amgen allegedly agreed to delay its entry into the U.S. market with AMGEVITATM, its Humira® biosimilar, in exchange for an alleged promise of exclusivity as the sole Humira® biosimilar in that market for five months, beginning in January 2023. In each of the New Humira® Antitrust Class Actions, plaintiffs seek injunctive relief, treble damages and attorney’s fees on behalf of a putative class of third-party payers and/or not infringed by Amgen.consumers that have indirectly purchased, paid for or provided reimbursement for Humira® in the United States. On June 19, 2018, Genentech and City of Hope moved to dismiss all of Amgen’s counterclaims and certain of Amgen’s defenses.
KANJINTI (trastuzumab) Patent Litigation
4, 2019, the Illinois Northern District Court entered an order consolidating the twelve purported class action cases for pre-trial purposes. On June 21, 2018, Genentech13, 2019, the Illinois Northern District Court entered an order requiring the plaintiffs to file a consolidated complaint by August 12, 2019.
Sensipar® Antitrust Class Actions
As previously disclosed, a plaintiff in one of the class action lawsuits against Amgen and City of Hopevarious entities affiliated with Teva filed a lawsuitmotion seeking to have the four class action lawsuits consolidated and designated as a multidistrict litigation (MDL) in the U.S. District Court for the Eastern District of Pennsylvania, and a different plaintiff in another of the class action lawsuits filed a motion seeking to have the four class action lawsuits, along with Cipla Ltd. v. Amgen Inc., consolidated and designated as a MDL in the Delaware District Court alleging Amgen’s infringement of 37 patents by Amgen’s submission of an application for FDA licensure of KANJINTI, Amgen’s biosimilar version of Genentech’s Herceptin® (trastuzumab).Court. On July 19, 2018, Genentech, City of Hope and Amgen filed25, 2019, the MDL panel held a joint stipulationhearing on the motions to dismiss certain of the patents from the lawsuit and Genentech and City of Hope filed an amended complaint narrowing its allegations of infringement to 18 of the 37 patents. Among other remedies, Genentech and City of Hope seek injunctive relief prohibiting patent infringement.consolidate.


Item 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following Management’s Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is intended to assist the reader in understanding Amgen’s business. MD&A is provided as a supplement to and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017,2018, and our Quarterly Report on Form 10-Q for the period ended March 31, 2018.2019. Our results of operations discussed in MD&A are presented in conformity with GAAP. Amgen operates in one business segment: human therapeutics. Therefore, our results of operations are discussed on a consolidated basis.
Forward-looking statements
This report and other documents we file with the SECSecurities and Exchange Commission (SEC) contain forward-looking statements that are based on current expectations, estimates, forecasts and projections about us, our future performance, our business, our beliefs and our management’s assumptions. In addition, we, or others on our behalf, may make forward-looking statements in press releases, or written statements or in our communications and discussions with investors and analysts in the normal course of business through meetings, webcasts, phone calls and conference calls. Such words as “expect,” “anticipate,” “outlook,” “could,” “target,” “project,” “intend,” “plan,” “believe,” “seek,” “estimate,” “should,” “may,” “assume” and “continue,”“continue” as well as variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and they involve certain risks, uncertainties and assumptions that are difficult to predict. We describe our respective risks, uncertainties and assumptions that could affect the outcome or results of operations in Item 1A. Risk Factors in Part II herein. We have based our forward-looking statements on our management’s beliefs and assumptions based on information available to our management at the time the statements are made. We caution you that actual outcomes and results may differ materially from what is expressed, implied or forecastforecasted by our forward-looking statements. Reference is made in particular to forward-looking statements regarding product sales, regulatory activities, clinical trial results, reimbursement, expenses, EPS, liquidity and capital resources, trends, planned dividends, stock repurchases and restructuring plans. Except as required under the federal securities laws and the rules and regulations of the SEC, we do not have any intention or obligation to update publicly any forward-looking statements after the distribution of this report, whether as a result of new information, future events, changes in assumptions or otherwise.
Overview
Amgen is a highly focused biotechnology company committed to unlocking the potential of biology for patients suffering from serious illness. A biotechnology pioneer since 1980, Amgen has grown to be one of the world’s leading independent biotechnology companies, has reached millions of patients around the world and is developing a pipeline of medicines with breakaway potential.
Currently, we market in six therapeutic areas: cardiovascular, oncology/hematology, neuroscience, inflammation, nephrology and bone health. Our principal products—those with the most significant annual commercial sales—are ENBREL, Neulasta®, ENBREL, SensiparProlia®/Mimpara, XGEVA®, ProliaAranesp® (denosumab), AranespKYPROLIS®, XGEVA® (denosumab) and EPOGEN® and Sensipar®/Mimpara®. We also market a number of other products, including KYPROLISNplate® (romiplostim), NplateVectibix® (panitumumab), VectibixParsabiv® (etelcalcetide), Repatha®, NEUPOGEN®, BLINCYTO® (blinatumomab), Aimovig® (panitumumab)(erenumab-aooe), RepathaAMGEVITA® TM(evolocumab), NEUPOGENKANJINTITM, EVENITYTM (romosozumab-aqqg), IMLYGIC®, BLINCYTO (talimogene laherparepvec) and Corlanor® (blinatumomab), ParsabivTM(etelcalcetide), IMLYGIC®, Corlanor® (ivabradine), AimovigTM and KANJINTITM (biosimilar trastuzumab).
Significant developments
Following is a summary of selected significant developments affecting our business that have occurred since the filing of our Quarterly Report on Form 10-Q for the period ended March 31, 2018.2019. For additional developments or for a more comprehensive discussion of certain developments discussed below, see our Annual Report on Form 10-K for the year ended December 31, 2017,2018, and our Quarterly Report on Form 10-Q for the period ended March 31, 2018.2019.
Products/Pipeline
Bone health
ProliaEVENITY® TM
In May 2018June 2019, we and June 2018, the FDA and the European Commission (EC), respectively, approved a new indication for the treatment of glucocorticoid-induced osteoporosis in adult patients at high risk of fracture. Both approvals were based on data from a phase 3 study, which showed patients on glucocorticoid therapy who received Prolia® had greater gains in bone mineral density compared to those who received the active comparator risedronate.
EVENITYTM(romosozumab)*
In July 2018, we announced the resubmission of the Biologics License Application to the FDA for EVENITYTM, an investigational monoclonal antibody for the treatment of osteoporosis in postmenopausal women at high risk for fracture.

Cardiovascular
Repatha®
In May 2018, we announced that the EC approved a new indicationUCB, our global collaboration partner in the Repatha® label for adults with established atherosclerotic cardiovascular disease (myocardial infarction, stroke or peripheral arterial disease) to reduce cardiovascular risk by lowering low-density lipoprotein cholesterol levels.
Neuroscience
AimovigTM
In May 2018, we announced that the FDA approved Aimovigdevelopment of EVENITYTMfor the preventive treatment of migraine in adults. We are in collaboration with Novartis on the development and commercialization of AimovigTM.
Oncology/Hematology
BLINCYTO®
In June 2018, we announced that the EC granted a full marketing authorization for BLINCYTO® based on the overall survival data from the phase 3 TOWER study in adult patients with Philadelphia chromosome-negative relapsed or refractory B-cell precursor acute lymphoblastic leukemia.
KYPROLIS®
In April 2018, we, announced that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has adopted a positivenegative opinion recommending a label variationon the Marketing Authorization Application for KYPROLISEVENITY® TMto include the final overall survival data from the phase 3 ASPIRE (CArfilzomib, Lenalidomide, and DexamethaSone versus Lenalidomide and Dexamethasone for the treatment of PatIents with Relapsed Multiple MyEloma) study. The ASPIRE study demonstrated that the addition of KYPROLIS® to lenalidomide and dexamethasone reduced the risk of death by 21% versus lenalidomide and dexamethasone alone and extended overall survival by 7.9 months in patients with relapsed or refractory multiple myeloma.severe osteoporosis. In June 2018, we announced that the FDA approved the supplemental New Drug Application to add the positive overall survival data from the phase 3 ASPIRE studyJuly 2019, UCB submitted a written notice to the U.S. Prescribing Information for KYPROLIS®.
In June 2018, we presented results fromEMA requesting a reexamination of the phase 3 ARROW (RAndomized, Open-label, Phase 3 Study in Subjects with Relapsed and Refractory Multiple Myeloma Receiving Carfilzomib in Combination with Dexamethasone, Comparing Once-Weekly versus Twice-weekly Carfilzomib Dosing) study of a once-weekly KYPROLIS® dosing regimen in patients with relapsed or refractory multiple myeloma. In the study, KYPROLIS® administered once-weekly at 70 mg/m2 with dexamethasone achieved superior progression-free survival and overall response rates, with a comparable safety profile, versus twice-weekly KYPROLIS® at 27 mg/m2 and dexamethasone.CHMP opinion.

Neuroscience
AMG 520 / CNP520
In July 2019, we and Novartis discontinued investigating AMG 520 / CNP520, a small-molecule inhibitor of beta-site amyloid precursor protein-cleaving enzyme-1 (BACE), for the prevention of Alzheimer’s disease.
Biosimilars
KANJINTITM* (formerly ABP 980)710 (biosimilar infliximab)
In May 2018, the EC granted marketing authorization for KANJINTITM, a biosimilar candidate to Herceptin®, for the treatment of HER2-positive metastatic breast cancer, HER2-positive early breast cancer and HER2-positive metastatic adenocarcinoma of the stomach or gastroesophageal junction.
In May 2018,July 2019, we announced that we receivedthe FDA has set a Complete Response Letter from the FDADecember 14, 2019 Biosimilar User Fee Act target action date for the Biologics License Application for KANJINTIof ABP 710, a biosimilar candidate to REMICADETM®.
ABP 710KANJINTITM
In June 2018,2019, we and Allergan plc (Allergan) announced results from a phase 3 study evaluatingthat the efficacyFDA approved KANJINTITM for all approved indications of the reference product Herceptin® (trastuzumab) for the treatment of HER2-overexpressing adjuvant and safetymetastatic breast cancer and HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma. In July 2019, we and Allergan announced the launch of biosimilar candidate ABP 710 compared with REMICADEKANJINTI® TM(infliximab) in patients with moderate-to-severe rheumatoid arthritis. The results confirm noninferiority compared to infliximab but could not rule out superiority based on its primary efficacy endpoint.the United States.
*FDA conditionally approved trade nameMVASITM
In July 2019, we and Allergan announced the launch of MVASITM in the United States.
For a discussion of litigations relating to KANJINTITM and MVASITM, see Note 20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2018, and Note 13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Reports on Form 10-Q for the periods ended March 31, 2019 and June 30, 2019.

Selected financial information
The following is an overview of our results of operations (in millions, except percentages and per-share data):
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2018 2017 Change 2018 2017 Change2019 2018 Change 2019 2018 Change
Product sales                      
U.S.$4,367
 $4,386
  % $8,514
 $8,481
  %$4,142
 $4,367
 (5)% $8,133
 $8,514
 (4)%
ROW1,312
 1,188
 10 % 2,508
 2,292
 9 %1,432
 1,312
 9 % 2,727
 2,508
 9 %
Total product sales5,679
 5,574
 2 % 11,022
 10,773
 2 %5,574
 5,679
 (2)% 10,860
 11,022
 (1)%
Other revenues380
 236
 61 % 591
 501
 18 %297
 380
 (22)% 568
 591
 (4)%
Total revenues$6,059
 $5,810
 4 % $11,613
 $11,274
 3 %$5,871
 $6,059
 (3)% $11,428
 $11,613
 (2)%
Operating expenses$3,227
 $3,112
 4 % $6,055
 $5,985
 1 %$3,193
 $3,227
 (1)% $6,278
 $6,055
 4 %
Operating income$2,832
 $2,698
 5 % $5,558
 $5,289
 5 %$2,678
 $2,832
 (5)% $5,150
 $5,558
 (7)%
Net income$2,296
 $2,151
 7 % $4,607
 $4,222
 9 %$2,179
 $2,296
 (5)% $4,171
 $4,607
 (9)%
Diluted EPS$3.48
 $2.91
 20 % $6.73
 $5.71
 18 %$3.57
 $3.48
 3 % $6.75
 $6.73
  %
Diluted shares660
 738
 (11)% 685
 740
 (7)%610
 660
 (8)% 618
 685
 (10)%
In the following discussion of changes in product sales, any reference to unit demand growth or decline refers to changes in the purchases of our products by healthcare providers (such as physicians or their clinics), dialysis centers, hospitals and pharmacies. In addition, any reference to increases or decreases in inventory refers to changes in inventory held by wholesaler customers and end users (such as pharmacies).
Total product sales increaseddecreased for the three months ended June 30, 2018,2019, driven primarily by higher unit demand,a decline in net selling price, offset partially by unfavorable changes in inventory.higher unit demand. Total product sales increaseddecreased for the six months ended June 30, 2018,2019, driven primarily by a decline in net selling price and unfavorable changes in inventory, offset partially by higher unit demand. The increases in total product salesFor the remainder of 2019, we continue to expect a lower net selling price compared with 2018.

Other revenues decreased for the three and six months ended June 30, 2018, have not benefited from net selling price.2019, driven primarily by lower milestone payments, offset partially by higher royalties.
Other revenues increasedOperating expenses for the three months ended June 30, 2018, driven primarily by a milestone payment received from Novartis. Other revenues2019, were relatively flat. Operating expenses increased for the six months ended June 30, 2018,2019, driven primarily by higher milestone paymentsincreased spending in research and early pipeline in support of our oncology programs and higher Ibrance® (palbociclib) royalty income.
Operating expenses increased for the three and six months ended June 30, 2018, driven primarily by higher investments in product launches and marketed product support, offset partially by decreased Other expenses. All expense categories continued to benefit from our transformation and process improvement efforts, which enabled investment in newer and recently launched products.cost of sales.
Although changes in foreign currency exchange rates result in increases or decreases in our reported international product sales, the benefit or detriment that such movements have on our international product sales is offset partially by corresponding increases or decreases in our international operating expenses and our related foreign currency hedging activities. Our hedging activities seek to offset the impacts, both positive and negative, that foreign currency exchange rate changes may have on our net income by hedging our net foreign currency exposure, primarily with respect to product sales denominated in euros. The net impact from changes in foreign currency exchange rates was not material for the three and six months ended June 30, 20182019 and 2017.2018.

Results of operations
Product sales
Worldwide product sales were as follows (dollar amounts in millions):
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2018 2017 Change 2018 2017 Change2019 2018 Change 2019 2018 Change
ENBREL$1,302
 $1,466
 (11)% $2,407
 $2,647
 (9)%$1,363
 $1,302
 5 % $2,514
 $2,407
 4 %
Neulasta®
1,100
 1,087
 1 % 2,255
 2,297
 (2)%824
 1,100
 (25)% 1,845
 2,255
 (18)%
Prolia®
610
 505
 21 % 1,104
 930
 19 %698
 610
 14 % 1,290
 1,104
 17 %
XGEVA®
499
 452
 10 % 970
 897
 8 %
Aranesp®
472
 535
 (12)% 926
 1,046
 (11)%436
 472
 (8)% 850
 926
 (8)%
KYPROLIS®
267
 263
 2 % 512
 485
 6 %
EPOGEN®
223
 250
 (11)% 442
 494
 (11)%
Sensipar®/Mimpara®
420
 427
 (2)% 917
 848
 8 %122
 420
 (71)% 335
 917
 (63)%
XGEVA®
452
 395
 14 % 897
 797
 13 %
EPOGEN®
250
 292
 (14)% 494
 562
 (12)%
Other products1,073
 867
 24 % 2,022
 1,646
 23 %1,142
 810
 41 % 2,102
 1,537
 37 %
Total product sales$5,679
 $5,574
 2 % $11,022
 $10,773
 2 %$5,574
 $5,679
 (2)% $10,860
 $11,022
 (1)%
Future sales of our products will depend in part on the factors discussed below and in the following sections of our Annual Report on Form 10-K for the year ended December 31, 2017:2018: (i) Overview, Item 1. Business—Marketing, Distribution and Selected Marketed Products;Products, (ii) Item 1A. Risk Factors;Factors and (iii) Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Overview, and Results of Operations—Product Sales, as well as in our Quarterly Report on Form 10-Q for the period ended March 31, 20182019, in (i) Part I, Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations—Results of Operations—Product Sales.Sales; and (ii) Part II, Item 1A. Risk Factors.
ENBREL
Total ENBREL sales by geographic region were as follows (dollar amounts in millions):
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2018 2017 Change   2018 2017 Change2019 2018 Change 2019 2018 Change
ENBREL — U.S.$1,252
 $1,411
 (11)% $2,302
 $2,529
 (9)%$1,315
 $1,252
 5 % $2,421
 $2,302
 5 %
ENBREL — Canada50
 55
 (9)% 105
 118
 (11)%48
 50
 (4)% 93
 105
 (11)%
Total ENBREL$1,302
 $1,466
 (11)% $2,407
 $2,647
 (9)%$1,363
 $1,302
 5 % $2,514
 $2,407
 4 %
The decreaseincrease in ENBREL sales for the three months ended June 30, 2018, was driven primarily by unfavorable changes in inventory and lower unit demand. The decrease in ENBREL sales for the six months ended June 30, 2018, was driven primarily by lower unit demand and a decline in net selling price.
For 2018, we expect the trend of lower unit demand to continue. In addition, we expect the 2018 net selling price to decline slightly compared with 2017.
Neulasta®
Total Neulasta® sales by geographic region were as follows (dollar amounts in millions):
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 2018 2017 Change   2018 2017 Change
Neulasta®— U.S.
$948
 $937
 1% $1,957
 $1,985
 (1)%
Neulasta®— ROW
152
 150
 1% 298
 312
 (4)%
Total Neulasta®
$1,100
 $1,087
 1% $2,255
 $2,297
 (2)%
The increase in global Neulasta® sales for the three months ended June 30, 2018,2019, was driven primarily by an increase in net selling price and to a lesser extent, favorable changes in inventory, offset partially by lower unit demand. The decreaseincrease in global Neulasta® ENBREL sales for the six months ended June 30, 2018,2019, was driven primarily by lower unit demand and favorable prior-periodimpacts from changes in accounting estimates offset partially byof sales deductions and product returns and an increase in net selling price.price, offset partially by unfavorable changes in inventory and lower unit demand. In 2019, we continue to expect lower unit demand compared with 2018.

Neulasta® sales have been and will continue to be affected byIn April 2019, the development of new protocols, tests and/or treatments for cancer and/or new treatment alternatives, including those that have reduced and may continue to reduce the use of myelosuppressive regimens in some patients.
Our final material U.S. patent for Neulasta® expired in October 2015. Therefore, we expect to face competition in the United States, which over time may haveFDA approved a material adverse impact on future sales of Neulasta®. Asecond biosimilar version of Neulasta® was approvedENBREL, and we are involved in patent litigations with the second quarter of 2018 and launched in July 2018. Othertwo companies seeking to market their FDA-approved biosimilar versions of Neulasta® may also receive approval in the second half of 2018. For a discussion of ongoing patent litigations with these and other companies that are developing proposed biosimilar versions of Neulasta®,seeENBREL. See Note 15, Contingencies and commitments, to the condensed consolidated financial statements, Note 18,20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017,2018, and Note 14,13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ended March 31, 2018.2019. Other companies are also developing purposed biosimilar versions of ENBREL. Companies with approved biosimilar versions of ENBREL may seek to enter the U.S. market if we are not successful in our litigations, or even earlier.
In addition, supplementary protection certificates issued by certain countries, including France, Germany, Italy, Spain and the United Kingdom, that are related to our European patent for Neulasta® expired in August 2017.
Prolia® 
Total ProliaNeulasta®sales by geographic region were as follows (dollar amounts in millions):
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 2018 2017 Change 2018 2017 Change
Prolia® — U.S.
$396
 $326
 21% $716
 $605
 18%
Prolia® — ROW
214
 179
 20% 388
 325
 19%
Total Prolia®
$610
 $505
 21% $1,104
 $930
 19%
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 2019 2018 Change 2019 2018 Change
Neulasta®— U.S.
$719
 $948
 (24)% $1,612
 $1,957
 (18)%
Neulasta®— ROW
105
 152
 (31)% 233
 298
 (22)%
Total Neulasta®
$824
 $1,100
 (25)% $1,845
 $2,255
 (18)%
The increasesdecreases in global ProliaNeulasta® sales for the three and six months ended June 30, 2018,2019, were driven primarilyby lower net selling price and the impact of biosimilar competition on unit demand. Neulasta® sales included a $98 million order from the U.S. government in the first quarter of 2019.
Biosimilar versions of Neulasta® have been approved and launched, and other biosimilar versions may also receive approval in the near future. Therefore, we face increased competition in the United States and Europe, which has had and will continue to have a material adverse impact on sales of Neulasta®. For a discussion of ongoing patent litigations relating to these and other biosimilars, see Note 20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2018, and Note 13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Reports on Form 10-Q for the periods ended March 31, 2019 and June 30, 2019.
Prolia®
Total Prolia® sales by geographic region were as follows (dollar amounts in millions):
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 2019 2018 Change 2019 2018 Change
Prolia® — U.S.
$458
 $396
 16% $848
 $716
 18%
Prolia® — ROW
240
 214
 12% 442
 388
 14%
Total Prolia®
$698
 $610
 14% $1,290
 $1,104
 17%
The increases in global Prolia® sales for the three and six months ended June 30, 2019, were driven by higher unit demand and, to a lesser extent, higher net selling price.demand. Prolia®, which has a six-month dosing interval, has exhibited a historical sales pattern, with the first and third quarters of a year representing lower sales than the second and fourth quarters of a year.
AranespXGEVA®
Total XGEVA®
Total Aranesp® sales by geographic region were as follows (dollar amounts in millions):
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 2018 2017 Change   2018 2017 Change
Aranesp® — U.S.
$241
 $288
 (16)% $466
 $566
 (18)%
Aranesp® — ROW
231
 247
 (6)% 460
 480
 (4)%
Total Aranesp®
$472
 $535
 (12)% $926
 $1,046
 (11)%
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 2019 2018 Change 2019 2018 Change
XGEVA® — U.S.
$379
 $339
 12% $735
 $671
 10%
XGEVA® — ROW
120
 113
 6% 235
 226
 4%
Total XGEVA®
$499
 $452
 10% $970
 $897
 8%
The decreasesincreases in global AranespXGEVA®sales for the three and six months ended June 30, 2018,2019, were driven primarily by the impact of competition onhigher unit demand and, to a lesser extent, lower net selling price.demand.
Aranesp® faces competition from a long-acting product. We could also face competition from biosimilar versions of EPOGEN®. A biosimilar version of EPOGEN® was approved in the second quarter of 2018 and may launch. Other biosimilar versions of EPOGEN® may also receive approval.
Sensipar®/MimparaAranesp® 
Total SensiparAranesp®/Mimpara® sales by geographic region were as follows (dollar amounts in millions):
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 2018 2017 Change 2018 2017 Change
Sensipar® — U.S.
$330
 $342
 (4)% $739
 $679
 9%
Sensipar®/Mimpara® — ROW
90
 85
 6 % 178
 169
 5%
Total Sensipar®/Mimpara®
$420
 $427
 (2)% $917
 $848
 8%
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 2019 2018 Change 2019
2018
Change
Aranesp® — U.S.
$192
 $241
 (20)% $374

$466

(20)%
Aranesp® — ROW
244
 231
 6 % 476

460

3 %
Total Aranesp®
$436
 $472
 (8)% $850

$926

(8)%

The decreasedecreases in global SensiparAranesp®/Mimpara® sales for the three months ended June 30, 2018, was driven primarily by unfavorable changes in inventory and lower unit demand as a result of a shift to ParsabivTM, offset partially by higher net selling price. The increase in global Sensipar®/Mimpara® sales for the six months ended June 30, 2019, were driven by the impact of competition on unit demand in the United States.
Aranesp® faces competition from a long-acting erythropoiesis-stimulating agent. Aranesp®also faces competition from a biosimilar version of EPOGEN®. Other biosimilar versions of EPOGEN® may also receive approval in the future. In 2019, sales in the United States have declined, and we expect them to continue to decline at a faster rate than in 2018 wasdue to short- and long-acting competition.
KYPROLIS®
Total KYPROLIS® sales by geographic region were as follows (dollar amounts in millions):
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 2019 2018 Change 2019 2018 Change
KYPROLIS® — U.S.
$166
 $151
 10 % $320
 $288
 11 %
KYPROLIS® — ROW
101
 112
 (10)% 192
 197
 (3)%
Total KYPROLIS®
$267
 $263
 2 % $512
 $485
 6 %
The increases in global KYPROLIS® sales for the three and six months ended June 30, 2019, were driven primarily by higher unit demand and increases in net selling price and inventory. There was a shift in reimbursement from U.S. Medicare Part D to Part B at the beginning of 2018, and providers may have ordered additional supply in the first quarter of 2018United States.
We are engaged in order to ensure patient treatment was not interrupted.
Our U.S. composition of matter patentlitigation with two related companies that are challenging our material patents related to SensiparKYPROLIS®, a small molecule, expired in March 2018. We are also involved in a number of litigation matters related to Sensipar®, including patent litigations with a number of companiesand seeking to market generic versionscarfilzomib products. Under the Hatch-Waxman Act, FDA approval of Sensipar®the ANDA at issue is stayed until at least January 20, 2020 (although the stay may be lifted in connection with a court order, or in certain other instances permitted under the statute). Separately, we have entered into confidential settlement agreements with other companies developing generic carfilzomib products, and litigation regardingthe court has entered consent judgments enjoining those companies from infringing certain of our request for pediatric exclusivity for Sensipar®.patents, subject to terms of the confidential settlement agreements. See Note 15, Contingencies and commitments, to the condensed consolidated financial statements, Note 18,20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017,2018, and Note 14,13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly ReportReports on Form 10-Q for the periodperiods ended March 31, 2018.2019 and June 30, 2019. The 2018 outlookFDA has reported that it has tentatively approved ANDAs filed by two companies for Sensipargeneric carfilzomib products. The date of final approval of those ANDAs is governed by the Hatch-Waxman Act and any applicable settlement agreements between the parties.

EPOGEN® is uncertain as generic competitors may enter the market at risk in the second half of 2018.
XGEVA®
Total XGEVAEPOGEN® sales by geographic region were as follows (dollar amounts in millions):
 Three months ended
June 30,
   Six months ended
June 30,
  
 2018 2017 Change 2018 2017 Change
XGEVA® — U.S.
$339
 $292
 16% $671
 $590
 14%
XGEVA® — ROW
113
 103
 10% 226
 207
 9%
Total XGEVA®
$452
 $395
 14% $897
 $797
 13%
 Three months ended
June 30,
   Six months ended
June 30,
  
 2019 2018 Change 2019 2018 Change
EPOGEN® — U.S.
$223
 $250
 (11)% $442
 $494
 (11)%
The increasesdecreases in global XGEVAEPOGEN®sales for the three and six months ended June 30, 2018, were driven primarily by higher unit demand and, to a lesser extent, higher net selling price.
EPOGEN®
Total EPOGEN® sales were as follows (dollar amounts in millions):
 Three months ended
June 30,
   Six months ended
June 30,
  
 2018 2017 Change 2018 2017 Change
EPOGEN® — U.S.
$250
 $292
 (14)% $494
 $562
 (12)%
The decreases in EPOGEN® sales for the three and six months ended June 30, 2018,2019, were driven primarily by a decreasedecline in net selling price due to contractual terms negotiatedour contract with DaVita Inc. In 2019, we continue to expect a lower net selling price compared with 2018.
A biosimilar version of EPOGEN® has been approved and to a lesser extent, lower unit demand.
Our final material U.S. patent for EPOGEN® expiredlaunched, and other biosimilar versions may also receive approval in May 2015. Wethe future. Therefore, we face increased competition in the United States, which has had and will continue to have a material adverse impact on sales of EPOGEN®. Multiple companies are developing proposed biosimilar versions of EPOGEN®. A biosimilar version of EPOGEN® was approved in the second quarter of 2018 and may launch. Other biosimilar versions of EPOGEN® may also receive approval. For a discussion of ongoing patent litigation withrelating to one of these companies,biosimilars, see Note 15, Contingencies and commitments, to the condensed consolidated financial statements and Note 18,20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017.2018.
Sensipar®/Mimpara®
Total Sensipar®/Mimpara® sales by geographic region were as follows (dollar amounts in millions):
 Three months ended
June 30,
   Six months ended
June 30,
  
 2019 2018 Change 2019 2018 Change
Sensipar® — U.S.
$43
 $330
 (87)% $178
 $739
 (76)%
Sensipar®/Mimpara® — ROW
79
 90
 (12)% 157
 178
 (12)%
Total Sensipar®/Mimpara®
$122
 $420
 (71)% $335
 $917
 (63)%
The decreases in global Sensipar®/Mimpara® sales for the three and six months ended June 30, 2019, were driven primarily by the impact of at-risk launches by generic competitors.
Our U.S. composition-of-matter patent related to Sensipar®, a small molecule, expired in March 2018. We are involved in litigation with a number of companies seeking to market generic cinacalcet products surrounding our U.S. formulation patent, which expires in September 2026. Separately, we have entered into confidential settlement agreements with other companies developing generic cinacalcet products, and the court has entered consent judgments enjoining those companies from infringing certain of our patents, subject to terms of the confidential settlement agreements. See Note 20, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2018, and Note 13, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Reports on Form 10-Q for the periods ended March 31, 2019 and June 30, 2019. Certain companies manufacturing generics began selling their generic cinacalcet products in the United States in late 2018 and 2019, and some of this generic product remains commercially available in the United States from third-party distributors. Sensipar® sales have been and will continue to be adversely impacted as a result of generic-product sales in the U.S. market.

Other products
Other product sales by geographic region were as follows (dollar amounts in millions):
Three months ended
June 30,
   Six months ended
June 30,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change 2018 2017 Change2019 2018 Change 2019 2018 Change
KYPROLIS®— U.S.
$151
 $140
 8 % $288
 $277
 4 %
KYPROLIS®— ROW
112
 71
 58 % 197
 124
 59 %
Nplate®— U.S.
107
 99
 8 % 219
 196
 12 %$122
 $107
 14 % 236
 219
 8 %
Nplate®— ROW
72
 65
 11 % 139
 122
 14 %79
 72
 10 % 154
 139
 11 %
Vectibix®— U.S.
68
 62
 10 % 143
 123
 16 %79
 68
 16 % 157
 143
 10 %
Vectibix®— ROW
105
 106
 (1)% 199
 192
 4 %117
 105
 11 % 209
 199
 5 %
Parsabiv® — U.S.
148
 66
 *
 257
 102
 *
Parsabiv® — ROW
20
 7
 *
 37
 12
 *
Repatha®— U.S.
98
 60
 63 % 182
 93
 96 %91
 98
 (7)% 174
 182
 (4)%
Repatha®— ROW
50
 23
 *
 89
 39
 *
61
 50
 22 % 119
 89
 34 %
NEUPOGEN®— U.S.
63
 90
 (30)% 128
 191
 (33)%55
 63
 (13)% 105
 128
 (18)%
NEUPOGEN®— ROW
39
 47
 (17)% 77
 94
 (18)%20
 39
 (49)% 43
 77
 (44)%
ParsabivTM — U.S.
66
 
 *
 102
 
 *
ParsabivTM — ROW
7
 
 *
 12
 
 *
BLINCYTO® — U.S.
34
 28
 21 % 64
 51
 25 %39
 34
 15 % 79
 64
 23 %
BLINCYTO® — ROW
26
 15
 73 % 45
 26
 73 %39
 26
 50 % 68
 45
 51 %
Aimovig® — U.S.
83
 2
 *
 142
 2
 *
Biosimilars — ROW82
 2
 *
 137
 2
 *
EVENITYTM — U.S.
3
 
 *
 3
 
 *
EVENITYTM— ROW
25
 
 *
 42
 
 *
Other — U.S.24
 19
 26 % 43
 34
 26 %27
 22
 23 % 50
 41
 22 %
Other — ROW51
 42
 21 % 95
 84
 13 %52
 49
 6 % 90
 93
 (3)%
Total other products$1,073
 $867
 24 % $2,022
 $1,646
 23 %$1,142
 $810
 41 % $2,102
 $1,537
 37 %
Total U.S. — other products$611
 $498
 23 % $1,169
 $965
 21 %$647
 $460
 41 % $1,203
 $881
 37 %
Total ROW — other products462
 369
 25 % 853
 681
 25 %495
 350
 41 % 899
 656
 37 %
Total other products$1,073
 $867
 24 % $2,022
 $1,646
 23 %$1,142
 $810
 41 % $2,102
 $1,537
 37 %
* Change in excess of 100%.

Operating expenses
Operating expenses were as follows (dollar amounts in millions):
 Three months ended
June 30,
   Six months ended
June 30,
  
 2018 2017 Change   2018 2017 Change
Operating expenses:           
Cost of sales$1,024
 $1,024
 % $1,968
 $2,020
 (3)%
% of product sales18.0% 18.4%   17.9% 18.8%  
% of total revenues16.9% 17.6%   16.9% 17.9%  
Research and development$869
 $873
 % $1,629
 $1,642
 (1)%
% of product sales15.3% 15.7%   14.8% 15.2%  
% of total revenues14.3% 15.0%   14.0% 14.6%  
Selling, general and administrative$1,353
 $1,209
 12% $2,480
 $2,273
 9 %
% of product sales23.8% 21.7%   22.5% 21.1%  
% of total revenues22.3% 20.8%   21.4% 20.2%  
Other$(19) $6
 *
 $(22) $50
 *
* Change in excess of 100%.

Transformation and process improvements
During 2014, we announced transformation and process improvement efforts that we continue to execute. As part of these efforts, we committed to a more agile and efficient operating model. Our transformation and process improvement efforts across the Company are enabling us to reallocate resources to fund many of our innovative pipeline and growth opportunities that deliver value to patients and stockholders.
The transformation includes a restructuring plan that we estimate will result in pretax accounting charges in the range of $800 million to $900 million. As of June 30, 2018, restructuring costs incurred to date were $794 million. The charges that were recorded related to the restructuring during the three and six months ended June 30, 2018, were not significant. Since 2014, we have realized approximately $1.6 billion of transformation and process improvement savings. Net savings have not been significant as savings were reinvested in product launches, clinical programs and external business development.
 Three months ended
June 30,
   Six months ended
June 30,
  
 2019 2018 Change 2019 2018 Change
Operating expenses:           
Cost of sales$1,012
 $1,024
 (1)% $2,067
 $1,968
 5 %
% of product sales18.2% 18.0%   19.0% 17.9%  
% of total revenues17.2% 16.9%   18.1% 16.9%  
Research and development$924
 $869
 6 % $1,803
 $1,629
 11 %
% of product sales16.6% 15.3%   16.6% 14.8%  
% of total revenues15.7% 14.3%   15.8% 14.0%  
Selling, general and administrative$1,260
 $1,353
 (7)% $2,414
 $2,480
 (3)%
% of product sales22.6% 23.8%   22.2% 22.5%  
% of total revenues21.5% 22.3%   21.1% 21.4%  
Other$(3) $(19) (84)% $(6) $(22) (73)%
Cost of sales
Cost of sales decreasedincreased to 16.9%17.2% of total revenues for the three months ended June 30, 2019, driven primarily by unfavorable product mix, offset partially by the benefit of Hurricane Maria insurance proceeds and lower manufacturing costs.
Cost of sales increased to 18.1% of total revenues for the six months ended June 30, 2019, driven primarily by unfavorable product mix and higher manufacturing costs, offset partially by lower royalty costs and by the benefit of Hurricane Maria insurance proceeds. In 2019, product mix will continue to negatively impact cost of sales.
Research and development
The increases in R&D expense for the three and six months ended June 30, 2018,2019, were driven primarily by lower royalty costsincreased spending in research and a decreaseearly pipeline in acquisition-related amortizationsupport of intangible assets,our oncology programs, offset partially by higher manufacturing costs and unfavorable product mix.
Research and development
R&D expenses for the three months ended June 30, 2018, were relatively flat as a decreasedecreased spending in marketed-product support of $70 million was offset by increases in later-stage clinical programs of $37 million and Discovery Research and Translation Sciences of $32 million.
R&D expenses for the six months ended June 30, 2018, were relatively flat as a decrease in marketed-product support of $77 million was offset by increases in later-stage clinical programs of $31 million and Discovery Research and Translation Sciences of $36 million.marketed products.
Selling, general and administrative
The increasesdecrease in Selling, general and administrative expenses for the three months ended June 30, 2019, was driven primarily by lower discretionary general and administrative expenses and the end of certain amortization of intangible assets in 2018.
The decrease in Selling, general and administrative expenses for the six months ended June 30, 2018, were2019, was driven primarily by the end of certain amortization of intangible assets in 2018 and lower discretionary general and administrative expenses, offset partially by investments in product launches and marketed product support.launch products.
Other
Other operating expenses for the three and six months ended June 30, 2019 and 2018, and 2017, decreased due primarily toinclude changes in the change in fair values of contingent consideration liabilities related to business combinations and lower net charges related to our restructuring plan, offset partially bycombinations. Other operating expenses included expenses related to legal proceedings.proceedings in the second quarter of 2018.

Nonoperating expense/income and income taxes
Nonoperating expense/income and income taxes were as follows (dollar amounts in millions):
Three months ended
June 30,
 Six months ended
June 30,
Three months ended
June 30,
 Six months ended
June 30,
2018 2017 2018 20172019 2018 2019 2018
Interest expense, net$347
 $321
 $685
 $647
$332
 $347
 $675
 $685
Interest and other income, net$162
 $165
 $393
 $360
$218
 $162
 $403
 $393
Provision for income taxes$351
 $391
 $659
 $780
$385
 $351
 $707
 $659
Effective tax rate13.3% 15.4% 12.5% 15.6%15.0% 13.3% 14.5% 12.5%
Interest expense, net
The increasedecreases in Interest expense, net, for the three and six months ended June 30, 2018,2019, was due primarily to a reduction in outstanding long-term debt as a result of maturities in the impact ofcurrent year, offset partially by rising interest rates on debt on which we pay variable rates of interest.variable-rate debt.
Interest and other income, net
The slight decreaseincreases in Interest and other income, net, for the three months ended June 30, 2018, was due primarily to higher net investment losses and reduced returns as a result of the liquidation of a portion of our portfolio, substantially offset by gains recognized on our equity investments, principally as a result of the adoption of a new accounting standard in the current year that changed prospectively the accounting for equity investments (see Note 1, Summary of significant accounting policies, to the

condensed consolidated financial statements). The increase in Interest and other income, net, for the six months ended June 30, 2018,2019 was due primarily to lower losses on sales of investments in interest-bearing securities, offset partially by reduced interest income as a netresult of lower average cash balances and lower gains on our strategic equity investments. In addition, the increase for the six-month period was reduced by a gain recognized in connection with our acquisition of K-A (see Note 3, Business combinations, toKirin-Amgen, Inc., during the condensed consolidated financial statements) and gains on our equity investments, offset partially by net investment losses recognized as a resultfirst quarter of the liquidation of a portion of our portfolio.2018.
Income taxes
The decreaseincreases in our effective tax raterates for the three and six months ended June 30, 2018,2019, was due primarily to the impacts ofa prior-year tax benefit associated with intercompany sales under U.S. corporate tax reform, offset partially by a prior year benefit associated with the effective settlement of certain state and federal tax matters.
On December 22, 2017, the U.S. enacted the 2017 Tax Act, which imposes a repatriation tax on accumulated earnings of foreign subsidiaries, implements a hybrid territorial tax system together with a current tax on certain foreign earnings and lowers the general corporate income tax rate to 21%. In March 2018, the FASB issued a new accounting standard to incorporate SAB 118, which permits us to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. We continue to analyze the 2017 Tax Act and in certain areas have made reasonable estimates of the effects on our condensed consolidated financial statements and tax disclosures.
The 2017 Tax Act includes U.S. taxation on foreign intangible income, effective January 1, 2018. The FASB allows an entity to make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as foreign intangible income in future years or provide for the tax expense related to the foreign intangible income as a period expense in the year it is incurred. We have recorded no provisional amount for deferred taxes on foreign intangible income because more time is needed to analyze the data in order to make an accounting policy election.
We consider our key estimates on the repatriation tax, the net deferred tax remeasurement, the impact on our unrealized tax benefits and the accounting policy election on temporary basis differences related to foreign intangible income to be incomplete due to our continuing analysis of final year-end data and tax positions. We are still accumulating and processing data to update our underlying calculations, and we expect the U.S. Treasury and regulators may issue further guidance, among other things; therefore, our estimates may change during 2018. However, we expect to complete our analysis within the measurement period.reform.
As previously disclosed, we received ana RAR from the IRS for the years 2010, 2011 and 2012. The RAR proposes to make significant adjustments that relate primarily to the allocation of profits between certain of our entities in the United States and the U.S. territory of Puerto Rico. OnIn November 29, 2017, we received a modified RAR that revised the IRS calculationsIRS’s calculation but continued to propose substantial adjustments. We disagree with the proposed adjustments and are pursuing resolution throughwith the IRS administrative appeals process,office, which currently has jurisdiction over the matter. If we believedeem necessary, we will likelyvigorously contest the proposed adjustments through the judicial process. Final resolution of this complex matter is not be concludedlikely within the next 12 months. Final resolution of the IRS auditmonths and could have a material impact on our results of operations and cash flows if not resolved favorably, however, wecondensed consolidated financial statements. We believe our accrual for income tax reserves are appropriately providedliabilities is appropriate based on past experience, interpretations of tax law, and judgments about potential actions by tax authorities; however, due to the complexity of the provision for all openincome taxes, the ultimate resolution of any tax years. matters may result in payments greater or less than amounts accrued.
See Note 5,3, Income taxes, to the condensed consolidated financial statements for further discussion.
Financial condition, liquidity and capital resources
Selected financial data was as follows (in millions):
June 30,
2018
 December 31,
2017
June 30,
2019
 December 31,
2018
Cash, cash equivalents and marketable securities$29,395
 $41,678
$21,758
 $29,304
Total assets$67,684
 $79,954
$59,373
 $66,416
Current portion of long-term debt$4,288
 $1,152
$2,816
 $4,419
Long-term debt$30,209
 $34,190
$27,798
 $29,510
Stockholders’ equity$14,909
 $25,241
$10,794
 $12,500

Cash, cash equivalents and marketable securities
We have global access to our $29$21.8 billion balance of cash, cash equivalents and marketable securities asbecause we no longer reinvest ourthe related undistributed foreign earnings indefinitely outside the United States. As a result of theU.S. corporate tax reform in 2017, Tax Act, we recorded a repatriation tax liability on undistributed earnings generated from operations in foreign tax jurisdictions, estimated at $7.3 billion, thatwhich will be paid over eight years. The first two annual payment waspayments were made in April 2018.2018 and April 2019, and the remaining scheduled payments total $6.2 billion.
The primary objective of our investment portfolio is to enhance overall returns in an efficient manner while maintaining safety of principal, prudent levels of liquidity and acceptable levels of risk. Our investment policy limits interest-bearing security

investments to certain types of debt and money market instruments issued by institutions with primarily investment-grade credit ratings, and it places restrictions on maturities and concentration by asset class and issuer.
Capital allocation
Consistent with the objective to optimize our capital structure, we seek to deploy our accumulated cash balances in an efficient manner, and we consider several alternatives such as share repurchases, payment of cash dividends, stock repurchases, repayment of debt and strategic transactions that expand our portfolio of products in areas of therapeutic interest.
We intend to continue to invest in our business and returnwhile returning capital to stockholders through the payment of cash dividends and stock repurchases, thereby reflecting our confidence in the future cash flows of our business. The timing and amount of future dividends and stock repurchases will vary based on a number of factors, including future capital requirements for strategic transactions, the availability of financing on acceptable terms, debt service requirements, our credit rating, changes to applicable tax laws or corporate laws, changes to our business model and periodic determination by our Board of Directors that cash dividends and/or stock repurchases are in the best interests of stockholders and are in compliance with applicable laws and agreements of the Company.Company’s agreements. In addition, the timing and amount of stock repurchases may also be affected by stock price and blackout periods, during which we are restricted from repurchasing stock. The manner of stock repurchases may include private block purchases, tender offers and market transactions.
In March 20182019 and December 2017,2018, the Board of Directors declared quarterly cash dividends of $1.32$1.45 per share of common stock, which were paid on June 7, 2019 and March 8, 2018 and June 8,2019, respectively, an increase of 10% over the quarterly cash dividend paid in each quarter of 2018.
We have also returned capital to stockholders through our stock repurchase program. During the six months ended June 30, 2018,2019, we repurchased $14.0$5.4 billion of our stock and paid $13.9 billion in cash during the period, which included 52.1 million shares of common stock repurchased through a $10.0 billion tender offer.stock. In April 2018,May 2019, our Board of Directors increased the amount authorized under our stock repurchase program by an additional $5.0 billion. As of June 30, 2018, $5.42019, $4.7 billion of authorization remained available under the Board of Directors-approvedour stock repurchase program.
As a result of stock repurchases including our recent tender offer, and quarterly dividend payments, we have an accumulated deficit as of June 30, 20182019 and December 31, 2017.2018. Our accumulated deficit is not expected to affect our future ability to operate, repurchase stock, pay dividends or repay our debt given our continuing profitability and strong financial position.
We believe that existing funds, cash generated from operations and existing sources of and access to financing are adequate to satisfy our needs for working capital; capital expenditure and debt service requirements; our plans to pay dividends and repurchase stock; and other business initiatives we plan to strategically pursue, including acquisitions and licensing activities. We anticipate that our liquidity needs can be met through a variety of sources, including cash provided by operating activities, sales of marketable securities, borrowings through commercial paper and/or syndicated credit facilities and access to other domestic and foreign debt markets and equity markets. See our Annual Report on Form 10-K for the year ended December 31, 2017,2018, Part I, Item 1A. Risk Factors—Global economic conditions may negatively affect us and may magnify certain risks that affect our business.
Certain of our financing arrangements contain nonfinancial covenants. In addition, our revolving credit agreement includes a financial covenant, which was modified during the three months ended March 31, 2018. The modified covenant requires that we maintain a specified minimum interest coverage ratio of (i) the sum of consolidated net income, interest expense, provision for income taxes, depreciation expense, amortization expense, unusual or nonrecurring charges and other noncash items (Consolidated EBITDA) to (ii) Consolidated Interest Expense, each as defined and described in the amended credit agreement. We were in compliance with all applicable covenants under these arrangements as of June 30, 2018.2019.

Cash flows
Our summarized cash flow activity was as follows (in millions):
Six months ended
June 30,
Six months ended
June 30,
2018 20172019 2018
Net cash provided by operating activities$4,829
 $4,711
$3,259
 $4,829
Net cash provided by (used in) investing activities$17,844
 $(1,970)
Net cash provided by investing activities$6,300
 $17,844
Net cash used in financing activities$(16,342) $(3,353)$(10,979) $(16,342)
Operating
Cash provided by operating activities has been and is expected to continue to be our primary recurring source of funds. Cash provided by operating activities during the six months ended June 30, 2018, increased2019, decreased compared with the same period in the prior year due primarily to higheran increase in payments to the IRS related to an advance deposit, an increase in sales deductions paid to customers and lower net income, offset partially by higher cash taxes resulting from the first installment payment of repatriation tax arising from the 2017 Tax Act, net of reduced payments on our ongoing income tax liability.income.
Investing
Cash provided by investing activities during the six months ended June 30, 2019 and 2018, was due primarily to net activitycash inflows related to marketable securities of $6.6 billion and $18.0 billion, offset partially by capital expenditures of $342 million. Cash usedrespectively. Higher cash inflows in investing activities during the six months ended June 30, 2017, was due primarilyprior year reflect the cash to net activity relatedfund a $10.0 billion tender offer completed in 2018 to marketable securities of $1.5 billion and capital expenditures of $353 million.repurchase our common stock. Capital expenditures during the six months ended June 30, 2019 and 2018, were $260 million and 2017, were associated primarily with manufacturing-capacity expansions in various locations, as well as other site developments.$342 million, respectively. We currently estimate 20182019 spending on capital projects and equipment to be approximately $750$700 million.
Financing
Cash used in financing activities during the six months ended June 30, 2019, was due primarily to repurchases of our common stock of $5.4 billion, repayment of debt of $3.7 billion and payment of dividends of $1.8 billion. Cash used in financing activities during the six months ended June 30, 2018, was due primarily to repurchases of our common stock of $13.9 billion, repayment of debt of $0.5 billion and payment of dividends of $1.8 billion and repayment of debt of $500 million. Cash used in financing activities during the six months ended June 30, 2017, was due primarily to the payment of dividends of $1.7 billion, repurchases of our common stock of $1.6 billion and repayment of long-term debt, net of proceeds from debt issuances, of $920 million, offset partially by proceeds from the issuance of commercial paper of $959 million.billion. See Note 12,9, Financing arrangements, and Note 10, Stockholders’ equity, to the condensed consolidated financial statements for further discussion.

Critical accounting policies
The preparation of our condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and the notes to the financial statements. Some of those judgments can be subjective and complex, and therefore, under different assumptions or conditions, actual results could differ materially from those estimates.estimates under different assumptions or conditions. A summary of our critical accounting policies is presented in Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, of our Annual Report on Form 10-K for the year ended December 31, 2017.2018. There were no material changes to our critical accounting policies during the six months ended June 30, 2018.2019.
Item 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Information about our market risk is disclosed in Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk, of our Annual Report on Form 10-K for the year ended December 31, 2017,2018, and is incorporated herein by reference. There have been no material changes during the six months ended June 30, 2018,2019, to the information provided in Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk, of our Annual Report on Form 10-K for the year ended December 31, 2017.2018.
Item 4.CONTROLS AND PROCEDURES
We maintain “disclosure controls and procedures,” as such term is defined under the Securities Exchange Act Rule 13a-15(e), that are designed to ensure that information required to be disclosed in Amgen’s Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to Amgen’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures. In designing and evaluating the disclosure controls and procedures, Amgen’s management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives and, in reaching a reasonable level of assurance, Amgen’s management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. We have carried out an evaluation under the supervision and with the participation of our management, including Amgen’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of Amgen’s disclosure controls and procedures. Based upon their evaluation and subject to the foregoing, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of June 30, 2018.2019.
Management determined that, as of June 30, 2018,2019, there were no changes in our internal control over financial reporting that occurred during the fiscal quarter then ended that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.


PART II — OTHER INFORMATION
Item 1.LEGAL PROCEEDINGS
See Note 15,13, Contingencies and commitments, to the condensed consolidated financial statements included in our Quarterly Report on Form 10-Q for the period ended June 30, 2018 and Note 14, Contingencies and commitments, to the condensed consolidated financial statements included in our Quarterly Report on Form 10-Q for the periodperiods ended March 31, 2018,2019 and June 30, 2019, for discussions that are limited to certain recent developments concerning our legal proceedings. Those discussions should be read in conjunction with Note 18,20, Contingencies and commitments, to the consolidated financial statements in Part IV of our Annual Report on Form 10-K for the year ended December 31, 2017.2018.
Item 1A.RISK FACTORS
This report and other documents we file with the SEC contain forward-looking statements that are based on current expectations, estimates, forecasts and projections about us, our future performance, our business, our beliefs and our management’s assumptions. These statements are not guarantees of future performance, and involve certain risks, uncertainties and assumptions that are difficult to predict. You should carefully consider the risks and uncertainties our business faces. We have described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2017,2018, the primary risks related to our business, and we periodically update those risks for material developments. Those risks are not the only ones we face. Our business is also subject to the risks that affect many other companies, such as employment relations, general economic conditions, geopolitical events and international operations. Further, additional risks not currently known to us or that we currently believe are immaterial may in the future materially and adversely affect our business, operations, liquidity and stock price.
Below, we are providing, in supplemental form, the material changes to our risk factors that occurred during the past quarter. Our risk factors disclosed in Part I, Item 1A, of our Annual Report, on Form 10-K for the year ended December 31, 2017,2018, provide additional disclosure for these supplemental risks and are incorporated herein by reference.
Our sales depend on coverage and reimbursement from third-party payers, and pricing and reimbursement pressures may affect our profitability.
Sales of our products depend on the availability and extent of coverage and reimbursement from third-party payers, including government healthcare programs and private insurance plans. Governments and private payers continue to pursue initiatives to contain costs and manage drug utilization. These payers are increasingly focused on the effectiveness, benefits and costs of similar treatments, which could result for our products in lower reimbursement rates or narrower populations for whom payers will reimburse. Continued intense public scrutiny of the price of drugs and other healthcare costs, together with payer dynamics, may limit our ability to set or adjust the price of our products based on their value, which could have a material adverse effect on our business. In the United States, the public discussions of drug pricing issues are likely to continue.
—Changing federal coverage and reimbursement policies and practices have impacted and may continue to impact access to and sales of our products
A substantial portion of our U.S. business relies on reimbursement from U.S. federal government healthcare programs and commercial insurance plans regulated by the U.S. federal and state governments. See our Annual Report on Form 10-K for the year ended December 31, 2017,2018, Part I, Item 1. Business—Reimbursement. ChangesOur business has and will continue to be impacted by legislative actions changing U.S. federal reimbursement policy may come through legislative and/or administrative actions.policy. For example, in February 2018, the U.S. Congress passed legislation that requires pharmaceuticalrequiring biopharmaceutical manufacturers to payprovide greater discounts forbeginning in 2019 on products dispensed to patients in the coverage gap between the initial coverage limit of Medicare Part D coverage gap beginning in 2019,and the program’s catastrophic-coverage threshold, which mayhas and will continue to reduce our net product sales relating to such patients. Additional legislative proposals have been introduced by members of Congress to overhaul provisions of the Patient Protection and Affordable Care Act, to allow commercial-level reimportation of prescription medications from Canada or other countries and to enable Medicare to negotiate drug prices with biopharmaceutical manufacturers. Congressional focus on drug pricing has increased since the Democrats took control of the U.S. House of Representatives following the November 2018 election. Recent proposed legislation has been introduced in Congress that would, among other things, penalize pharmaceutical manufacturers for raising prices on drugs covered by Medicare Parts B and D faster than the rate of inflation, cap out-of-pocket expenses for Medicare Part D beneficiaries and significantly change the way Medicare reimburses for drugs in Medicare Part B. In addition, in January 2019, the chair of the House Oversight and Reform Committee sent letters to twelve different biopharmaceutical manufacturers, including Amgen, seeking documents and detailed information about such companies’ drug pricing. A number of other Congressional committees have also held hearings during the first half of 2019 on drug pricing.

Also our business has been and is expected to continue to be impacted by changes in U.S. federal reimbursement policy resulting from executive actions, federal regulations, or federal demonstration projects. For example, in May 2018, the U.S. President Donald Trump and hispresidential administration (the Administration) released a drug pricing “blueprint” and requested public comment on an array of policy ideas intended to increase competition, improve the negotiating power of the federal government, reduce drug prices and lower patient out-of-pocket costs. TheThis blueprint includedincludes a number of policy ideas with the potential to significantly impact, our industry, whether individually or collectively, includingour industry. Such proposals to moveinclude moving coverage and reimbursement for all Medicare Part B drugs into Medicare Part D, instituting a competitive acquisition program for Part B drugs in which competing third-party vendors take on the financial risk of acquiring drugs and to removebilling Medicare, removing the safe-harborsafe harbor protection under the federal anti-kickback statute for drug rebates paid to payers. Prior topayers, and requiring the releaseinclusion of drug price information in direct-to-consumer drug advertising.
Since that time, the drug pricing blueprint, other legislative proposals had been introduced into the U.S. Congress to overhaul provisions of the ACA and to enable commercial-level re-importation of prescription medications from Canada president and/or other countries. Changes in U.S. federal reimbursement policy may also arise as a result of executive actions, federal regulations, or demonstration projects implemented by federal agencies, includingsuch as the Centers for Medicare &and Medicaid Services (CMS), have announced a number of demonstration projects, recommendations and proposals to implement various elements described in the drug pricing blueprint. CMS, the federal agency responsible for administering Medicare and overseeing state Medicaid programs and the Health Insurance Marketplaces. CMSMarketplaces, has substantial power to implement policy changes or demonstration projects that can quickly and significantly affect how drugs, including our products, are covered and reimbursed. For example, in October 2018, President Trump announced that CMS was evaluating a pilot program proposed to initially cover fifty percent of spending on Part B single-source drugs referred to as the “International Price Index” (IPI) model that would, among other things, set the Medicare payment amount for such single-source drugs to more closely align with international drug prices. In June 2019, Administration officials announced that the Office of Management and Budget is reviewing a draft of a proposed rule to implement the IPI model in the United States. CMS has already begun implementingalso issued guidance to allow certain Medicare plans offered by private insurance companies to require that patients receiving Medicare Part B drugs first try a drug preferred by the plan before such plan will cover another therapy and proposing lower reimbursement rates for new Part B drugs. Some of the efforts of CMS and the U.S. Department of Health and Human Services (HHS, the federal agency of which CMS is a part) to implement elements described inof the administration’s drug pricing blueprint including warning Medicare Part D plan insurershave not ultimately resulted in policy changes. For example, in July 2019 Administration officials announced the withdrawal of a proposed HHS rule that they could face compliance actions if they implement contractual “gag clauses”would have excluded from federal anti-kickback safe harbor protection certain rebates paid to prevent pharmaciesPBMs under Medicare. However, following the withdrawal of this rebate rule, the Administration might pursue the IPI model or other drug pricing initiatives.
Separate from alerting patients to lower priced cash payment options.the drug pricing blueprint, CMS has also undertaken other demonstration projects to test care models, such as the CMS Oncology Care Model, thatwhich provides participating physician practices with performance-based financial incentives that aim

to manage or reduce Medicare costs without negatively impacting the efficacy of care. We believe the Oncology Care Model has negatively impactedreduced utilization of certain of our oncology products by participating physician practices and mayexpect it to continue to do so in the future. And in July 2019, CMS released a proposed rule creating a new mandatory payment model focused on encouraging greater use of home dialysis and kidney transplants for end-stage renal disease patients that, if finalized as proposed, could result in changes to treatment of such patients, including reduction of the use of our erythropoiesis-stimulating agents and calcimimetic products. CMS has also solicited suggestions regarding other potential care models. President Trump’s administration is also seeking to address drug prices through other federal agency actions. For example, to promote greater drug price competition, the FDA is pursuing policies that would ease generic and biosimilar entry requirements, including the lowering of standards for demonstrating biosimilarity or interchangeability. While
In this dynamic environment, we are unable to predict ifwhich or how many of these various federal policy, legislative or regulatory changes may ultimately be enacted,enacted. However, to the extent that these or other federal government initiatives decrease or modify the coverage or reimbursement available for our products, limit our ability to offer co-pay payment assistance to commercial patients, require that we pay increased rebates or shift other costs to us, limit our ability to offer co-pay payment assistance to commercial patients, limit or impact our decisions regarding the pricing of pharmaceuticalbiopharmaceutical products or otherwise reduce the use of our U.S. products, such actions could have a material adverse effect on our business and results of operations.
We also face risks relating to the reporting of pricing data that affects the reimbursement of and discounts provided for our products. Government price reporting regulations are complex and may require a manufacturer to update certain previously submitted data. If our submitted pricing data are incorrect, we may become subject to substantial fines and penalties or other government enforcement actions, which could have a material adverse effect on our business and results of operations. In addition, as a result of restating previously reported price data, we also may be required to pay additional rebates and provide additional discounts.

—Changing state reimbursement and pricing actions may impact access to and have impacted and may continue to impact sales of our products
At the state level, government actions or ballot initiatives can also affect how our products are covered and reimbursed and/or create additional pressure on our pricing decisions. A number of states have adopted, and many other states have discussed and debated and are considering, new pricing legislation,actions, including proposals designed to require biopharmaceutical manufacturers to publicly report proprietary pricing information, limit price increases or to place a maximum price ceiling or cap on pharmaceuticalbiopharmaceutical products. Existing and proposed state pricing laws have added complexity to the pricing of drugs and may already be impacting industry pricing decisions. For example, in October 2017, California enacted a drug pricingdrug-pricing transparency bill that requires pharmaceuticalbiopharmaceutical manufacturers to notify health insurers and government health plans at least 60 days before scheduled prescription drug price increases that exceed certain thresholds. These existingOregon and proposedWashington passed similar laws in 2019 requiring notices to a state pricingagency of certain price increases. Other states are seeking to change the way their states pay for drugs for patients covered by state programs. For example, in August 2018 the Ohio Department of Medicaid ordered that all the state’s Medicaid managed care plans terminate and renegotiate contracts with PBMs to eliminate the drug purchasing model in which PBMs bill the state more than they reimburse pharmacists for filling Medicaid patient prescriptions. In January 2019, California’s governor issued an executive order expanding state Medicaid coverage and directing state agencies and programs to consolidate drug purchases and to negotiate drug prices with manufacturers. Additionally, four states have enacted laws have added complexity to facilitate the pricingimportation of drugs from Canada. These state importation programs must first be approved by HHS under a federal statute that excludes biologics, but state and federal legislatures and agencies may already be impacting industry pricing decisions.seek ways to extend such measures to biologics. Other states could adopt similar approaches or could pursue different policy changes in a continuing effort to reduce their costs. Ultimately, as with U.S. federal government actions, existing or future state government actions or ballot initiatives may also have a material adverse effect on our product sales, business and results of operations.
—U.S. commercial payer actions have impacted and may continue to impact access to and sales of our products
Payers, including healthcare insurers, Pharmacy Benefit Managers (PBMs)PBMs, integrated healthcare delivery systems and group purchasing organizations, increasingly seek ways to reduce their and their respective members’ costs. ManyWith increasing frequency, payers continue to adoptare adopting benefit plan changes that shift a greater portion of prescriptiondrug costs to patients. Such measures include more limited benefit plan designs, high deductible plans, higher patient co-pay or co-insurancecoinsurance obligations and more significant limitations on patients’ use of manufacturer commercial manufacturer co-pay payment assistance programs (including through co-pay accumulator adjustment or maximization programs). Payers have sought and will likely continue to seek price discounts or rebates in connection with the placement of our products on their formularies or those they manage, particularly in treatment areas where the payer has taken the position that multiple branded products are therapeutically comparable. Payers also control costs by imposing restrictions on access to or usage of our products, such as requiring that patients first try a drug preferred by requiringthe payer or receive the payer’s prior authorizationsauthorization before covering the product, or step therapy, andthat patients use a mail-order pharmacy or a limited network of fully-owned specialty pharmacies; payers may also choose to exclude certain indications for which our products are approved or even choose to exclude coverage entirely. For example, the burdensome administrative processprocesses required for physicians to demonstrate or document that the patients for whom Repatha®has been prescribed meet the payers’payer utilization management criteria has limited and may continue to limit patient access to Repatha® treatment. Even with increasedIn an effort to reduce barriers to access, we reduced the net price of Repatha® by providing greater discounts and rebates to payers, including PBMs that administer Medicare Part D prescription drug plans. However, affordability of patient out-of-pocket expenseco-pay cost has and may continue to limit patient use. For example, othera very high percentage of Medicare patients with coverage for Repatha® have abandoned their Repatha® prescriptions rather than pay their co-pay payment. In an effortlate 2018 and early 2019, we introduced a set of new National Drug Codes (NDCs) to reduce access burdens,make Repatha® available at a lower list price to attempt to address affordability for patients, particularly those on Medicare. To allow payers time to make a smooth transition to the lower list price and avoid incentivizing PBMs to immediately switch patients to the other available proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor that offered them a higher overall rebate due to its higher list price, we have takenalso continued to offer Repatha® at the original list price for a numberperiod of actions to reduce thetime. Despite these net price of Repatha® through offering greater discounts and rebates to payers. Despite the recent netlist price reductions, some payers have and may continue to imposerestrict patient access, burdens, change formulary coverage for Repatha®, seek further discounts or rebates or take other actions that could reduce our sales of Repatha®. Further, in the competitive PCSK9 inhibitor marketplace, many payers have not yet adopted the new NDCs we introduced for lower-list price Repatha®, including a number of PBMs that continue to cover Repatha® at the original list price in part because of the higher rebates they receive for it. These factors have and may continue to limit patient affordability and use and to negatively impact our sales of Repatha®.
Significant consolidation in the health insurance industry has resulted in a few large insurers and PBMs exerting greater pressure in pricing and usage negotiations with drug manufacturers, significantly increasing discounts and rebates required of manufacturers and limiting patient access and usage. For example, in the United States, the top three PBMs now oversee moregreater than 70%two-thirds of prescription claims and the top three health insurance companies’ coverage is approaching half ofas well as government and commercial covered lives. Consolidation between pharmacies is also increasing, with the top three pharmacies now responsible for half of U.S. drug sales. ConsolidationThe consolidation among insurers, PBMs and other payers, including through integrated healthcare delivery systems and/or with specialty or mail-order pharmacies and pharmacy retailers, has increased the negotiating leverage such entities have over us and other drug manufacturers and has resulted in greater price discounts, on our products,rebates and fees for other services being realized by those payers. For example, during the

fourth quarter of 2018, two of the nation’s largest PBMs, Express Scripts and rebates. FurtherCVS Health, completed their combinations with major insurance companies Cigna and Aetna, respectively. Additional consolidation (including as a resultwould further increase the leverage of a number of merger transactions that have been announced but not yet completed) would increase this leverage.such entities. Ultimately, furtheradditional discounts, rebates, coverage or plan changes, restrictions or exclusions as described aboveimposed by these commercial payers could have a material adverse effect on our product sales, business and results of operations.
—Government and commercial payer actions outside the United States have impacted and will continue to impact access to and sales of our affected products.products
Outside the United States, we expect countries will continue to take actions to reduce their drug expenditures. See our Annual Report on Form 10-K for the year ended December 31, 2017,2018, Part I, Item 1. Business—Reimbursement. For example, internationalInternational reference pricing (IRP) ishas been widely used by a large number ofmany countries outside the United States to control costs based on an external benchmark of a product’s price in other countries. IRP policies can quickly and frequently change and may not reflect differences in the burden of disease, indications, market structures, or affordability differences across countries or regions. Any deteriorationIn addition, countries may refuse to reimburse or may restrict the reimbursed population for a product when their national health technology assessments do not consider a medicine to demonstrate sufficient clinical benefit beyond existing therapies or that it does not meet certain cost effectiveness thresholds. For example, despite the EMA’s May 2018 approval of Repatha® for the treatment of patients with established atherosclerotic disease, reimbursement for Repatha® in theFrance and Germany has remained limited to narrower patient populations (such as those with homozygous familial hypercholesterolemia) following national health technology assessments in mid-2018. Failure to obtain coverage and reimbursement available for our products, a deterioration in their existing coverage and reimbursement, or a decline in the timeliness or certainty of payment by payers to physicians and other providers couldhas impacted and may further negatively impact the ability or willingness of healthcare providers to prescribe our products for their patients or couldand otherwise negatively affect the use of our products or the prices we receive for them. Such changes couldcan and have had a material adverse effect on our product sales, business and results of operations.
We perform a substantial majority of our commercial manufacturing activities at our facility in the U.S. territory of Puerto Rico and a substantial majority of our clinical manufacturing activities at our facility in Thousand Oaks, California; significant disruptions or production failures at these facilities could significantly impair our ability to supply our products or continue our clinical trials.
The global supply of our products and product candidates for commercial sales and for use in our clinical trials is significantly dependent on the uninterrupted and efficient operation of our manufacturing facilities, in particular those in the U.S. territory of Puerto Rico and Thousand Oaks, California. See our Annual Report on Form 10-K for the year ended December 31, 2018, Part I, Item 1A. Risk Factors—Manufacturing difficulties, disruptions or delays could limit supply of our products and limit our product sales.
We currently perform a substantial majority of our clinical manufacturing activities at our facility in Thousand Oaks, California. A substantial disruption in our ability to operate our Thousand Oaks, California manufacturing facility could materially and adversely affect our ability to supply our product candidates for use in our clinical trials, leading to delays in development of our product candidates.
In addition, we currently perform a substantial majority of our commercial manufacturing activities at our facility in the U.S. territory of Puerto Rico. In late September 2017, Hurricane Maria made landfall on the island of Puerto Rico. The hurricane destroyed residential and commercial buildings, agriculture, communications networks and most of Puerto Rico’s electric grid. While the critical manufacturing areas of our commercial manufacturing facility were not significantly impacted by the storm, the restoration of electrical service on the island was a slow process, and our facility operated with electrical power from back-up diesel powered generators for some time. In January 2018, we reconnected to the Puerto Rico electric grid but have continued to use diesel generators as needed when sufficient electric power has not been reliably available. Further instability of the electric grid could require us to increase the use of our generators or even return to using them exclusively. In addition, future storms or other disasters or events could cause a more significant impact to our manufacturing operations. Also, there is political instability in the Puerto Rican government that has led to civil unrest and the recent resignation of the governor. While our ability to manufacture and supply our products has not, to date, been impacted by the political instability, any substantial disruption in our ability to operate our Puerto Rico manufacturing facility (whether due to problems with the facility itself, compliance with regulatory requirements, the infrastructure and services available on the island, the unavailability of raw materials or supplies from vendors, the unavailability of key staff or otherwise) or get supplies and manufactured products transported to and from that location could materially and adversely affect our ability to supply our products and affect our product sales. See our Annual Report on Form 10-K for the year ended December 31, 2018, Part I, Item 1A. Risk Factors—Manufacturing difficulties, disruptions or delays could limit supply of our products and limit our product sales.

We also face risks relatingThe impact of Hurricane Maria and the political instability in Puerto Rico have placed greater stress on the island’s already challenged economy. Prior to Hurricane Maria, the government of Puerto Rico was unable to pay its roughly $72 billion in debt. In June 2016, the U.S. Congress passed the Puerto Rico Oversight, Management, and Economic Stability Act (PROMESA), which established a Financial Oversight and Management Board (Oversight Board) to provide fiscal oversight through the development and approval of fiscal plans and budgets for Puerto Rico and to assist in its debt restructuring. In May 2017, after negotiations for debt restructuring with creditors were unsuccessful, the Oversight Board approved and certified the filing in the U.S. District Court for the District of Puerto Rico of a voluntary petition under Title III of PROMESA for the government of Puerto Rico and certain of its governmental entities, including the Puerto Rico Electric Power Authority (PREPA). Title III of PROMESA provides Puerto Rico with a judicial process for restructuring its debt similar to, but not identical to, Chapter 9 of the U.S. Bankruptcy Code. The governor of Puerto Rico declared a state of emergency and authorized a moratorium on the payment of general obligation bonds and other debts issued by certain instrumentalities, which moratorium has been extended and may continue to be extended while the Oversight Board is in effect. Given the severe conditions in Puerto Rico after Hurricane Maria, resolution of Puerto Rico’s debt situation through the PROMESA judicial process has been delayed. In the case of PREPA, the effects of Hurricane Maria and several changes in PREPA’s management have delayed reconstruction efforts.
In June 2018, the Oversight Board certified a budget for Puerto Rico’s fiscal year 2019 that imposes significant expense reductions across the government. The Title III Court dismissed most of the government’s challenges to the reportingbudget, and the governor and legislature of pricing dataPuerto Rico filed appeals before the U.S. Court of Appeals for the First Circuit (First Circuit Court). In February 2019, the First Circuit Court affirmed the Title III Court’s dismissal of the legislature’s appeal; however, the governor’s appeal is still pending before the First Circuit Court.
In addition, certain non-governmental entities have brought suit claiming the appointment process of the Oversight Board members set forth in PROMESA conflicts with the appointments clause of the U.S. Constitution. In February 2019, the First Circuit Court ruled that affects the reimbursementappointment was unconstitutional and in June 2019, the U.S. Supreme Court accepted the case for review. If the U.S. Supreme Court were to hold that PROMESA has a constitutional infirmity and that actions taken by the Oversight Board are invalid, the commencement of all Title III proceedings could be invalid. In such event, the current debt restructuring process and discounts providedthe debtholder litigation stay under Title III of PROMESA could be in jeopardy.
In October 2018, the fiscal plan for Puerto Rico was updated, including a projected increase in federal disaster funding and projected material deficits once the stimulus effects of the disaster recovery dissipate. The fiscal plan stresses the importance of structural reforms to address Puerto Rico’s challenging economic and demographic trends that may be difficult to implement as well as have a material adverse impact on our products. consolidated financial statements.
In May 2019, the fiscal plan was further updated to incorporate a revised projection on federal disaster spending. The new fiscal plan projects a smaller surplus in the short-term due to a longer rollout in federal disaster assistance. In June 2019, the Oversight Board certified the fiscal year 2020 budget, which is higher than the 2019 budget.
In addition, the Tax Cuts and Jobs Act (2017 Tax Act) will no longer permit deferral of U.S. taxation on Puerto Rico earnings of U.S. companies (or their foreign subsidiaries), although these earnings generally will be taxed in the United States pricing dataat a reduced 10.5% rate. Given Puerto Rico’s challenged economy and hurricane recovery needs, it may be difficult for Puerto Rico to sustain or grow its manufacturing base due to competition from other foreign locations subject to a similar level of U.S. taxation, or U.S. locations due to the reduction in the U.S. corporate tax rate from 35% to 21%. The manufacturing sector contributes more than 45% of Puerto Rico’s gross domestic product, and multinational companies with Puerto Rico operations contribute approximately 30% of Puerto Rico’s revenue base.
While PROMESA and the actions above continue to be important factors in moving Puerto Rico toward economic stability, there is still a risk that Puerto Rico’s ongoing economic challenges, the effects of Hurricane Maria and the potential impact of the 2017 Tax Act could negatively affect the territorial government’s provision of utilities or other services in Puerto Rico that we submituse in the operation of our business, create the potential for increased taxes or fees to operate in Puerto Rico, result in a migration of workers from Puerto Rico to the U.S.mainland United States, or make it more expensive or difficult for us to operate in Puerto Rico. In addition, the political instability in Puerto Rico described above may cause additional disruption and further delay the resolution of Puerto Rico’s debt restructuring and economic recovery. These factors could materially and adversely affect our ability to supply our products and affect our product sales.

A breakdown, cyberattack or information security breach could compromise the confidentiality, integrity and availability of our information technology systems and network-connected control systems and our data, interrupt the operation of our business and affect our reputation.
To achieve our business objectives, we rely to a large extent upon sophisticated information technology systems and network-connected control systems, some of which are managed, hosted, provided or serviced by third parties. Internal or external events that compromise the confidentiality, integrity and availability of our systems and data may significantly interrupt the operation of our business, result in significant costs and/or affect our reputation.
Our information technology systems are highly integrated into our business, including our R&D efforts, our clinical and commercial manufacturing processes and our product sales and distribution processes. The complexity and interconnected nature of our systems makes them potentially vulnerable to breakdown or other service interruptions. Our systems are also subject to frequent cyberattacks. As the cyber-threat landscape evolves, these attacks are growing in frequency, sophistication and intensity, and are becoming increasingly difficult to detect. Such attacks could include the use of harmful and virulent malware, including ransomware or other denials of service, and can be deployed through various means including the software supply chain, e-mail, malicious websites, and the use of social engineering. Attacks such as those seen with other multi-national companies, including some of our peers, could leave us unable to utilize key business systems or access important data needed to operate our business, including developing, gaining regulatory approval for, manufacturing, selling and/or distributing our products. For example, in 2017, a pharmaceutical company experienced a cyberattack involving virulent malware that significantly disrupted its operations, including its research and sales operations and the production of some of its medicines and vaccines. As a result of the cyberattack, its orders and sales for certain products in certain markets were negatively impacted. Our systems also contain and utilize a high volume of sensitive data, including intellectual property, trade secrets, financial information, regulatory information, strategic plans, sales trends and forecasts, litigation materials and/or personal information belonging to us, our staff, our patients, customers and/or other parties. In some cases, we utilize third-party service providers to process, store, manage or transmit such data, which may increase our risk. Intentional or inadvertent data privacy or security breaches (including cyberattacks) or lapses by employees, service providers, nation states, organized crime organizations, “hacktivists” or others, create risks that our sensitive data may be exposed to unauthorized persons, our competitors, or the public. Finally, domestic and global government impacts the payment rates for providers, rebatesregulators, our business partners, suppliers with whom we pay,do business, companies that provide us or our partners with business services and discountscompanies we are requiredmay acquire may face similar risks, and security breaches of their systems could adversely affect our security, leave us without access to provide under Medicare, Medicaidimportant systems, products, raw materials, components, services or information or expose our confidential data. For example, in June 2019, a vendor that performs a variety of tests and analytical services that we and other government drug programs. Government price reporting regulations are complexbiopharmaceutical companies use in developing and may requiremanufacturing our products experienced a manufacturercyberattack requiring us to update certain previously submitted data. Our price reporting data calculations are reviewed monthly and quarterly, and based on such reviewsdisconnect our systems from the vendor’s systems. While we have on occasion restated previously reported pricing datawere able to reflect changes in calculation methodology, reasonable assumptions and/or underlying data. Ifreconnect our submitted pricing data are incorrect, we may become subject to substantial fines and penaltiessystems after several weeks, an extended service outage impacting this or other government enforcement actions,vendors, particularly where such vendor is the single source from which we obtain the services, could have a material adverse effect on our business andor results of operations. In addition, aswe distribute our products in the United States primarily through three pharmaceutical wholesalers, and a security breach that impairs the distribution operations of our wholesalers could significantly impair our ability to deliver our products to healthcare providers.
Although we have experienced system breakdowns, attacks and information security breaches, we do not believe such breakdowns, attacks and breaches have had a material adverse effect on our business or results of operations. We continue to invest in the monitoring, protection, and resilience of our critical or sensitive data and systems. However, there can be no assurance that our efforts will detect, prevent or fully recover systems or data from all breakdowns, service interruptions, attacks, or breaches of our systems that could adversely affect our business and operations and/or result in the loss or exposure of restating previously reported pricecritical, proprietary, private, confidential or otherwise sensitive data, which could result in financial, legal, business or reputational harm to us or impact our stock price. While we also may be requiredmaintain cyber-liability insurance, our insurance is not sufficient to pay additional rebates and provide additional discounts.cover us against all losses that could potentially result from a service interruption, breach of our systems or loss of our critical or sensitive data.

Item 2.UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
During the three months ended June 30, 2018,2019, we had one outstanding stock repurchase program, under which the repurchase activity was as follows:
Total number
of shares
purchased
 
Average
price paid
per share (1)
 
Total number
of shares purchased
as part of publicly announced program
 
Maximum dollar
value that may
yet be purchased
under the program (2)
Period 
Total number
of shares
purchased
 
Average
price paid
per share (1)
 
Total number
of shares purchased
as part of publicly announced program
 
Maximum dollar
value that may
yet be purchased
under the program(2)
April 1 - 307,368,600
 $171.94
 7,368,600
 $7,313,546,088
 5,910,200
 $186.39
 5,910,200
 $981,408,982
May 1 - 317,365,100
 $173.00
 7,365,100
 $6,039,390,454
 4,457,100
 $170.96
 4,457,100
 $5,219,445,027
June 1 - 303,502,600
 $184.52
 3,502,600
 $5,393,102,210
 2,718,800
 $178.60
 2,718,800
 $4,733,865,620
18,236,300
 $174.78
 18,236,300
  
Total 13,086,100
 $179.51
 13,086,100
  
(1) ___________Average price paid per share includes related expenses.
(2) In April 2018, our Board of Directors increased the amount authorized under our stock repurchase program by an additional $5.0 billion.
(1)
Average price paid per share includes related expenses.
(2)
In May 2019, our Board of Directors increased the amount authorized under our stock repurchase program by an additional $5.0 billion.
Item 6. EXHIBITS
Reference is made to the Index to Exhibits included herein.


INDEX TO EXHIBITS
Exhibit No. Description
3.1 
Restated Certificate of Incorporation of Amgen Inc. (As Restated March 6, 2013.) (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2013 on May 3, 2013 and incorporated herein by reference.)
   
3.2 
Amended and Restated Bylaws of Amgen Inc. (As Amended and Restated February 15, 2016.) (Filed as an exhibit to Form 8-K on February 17, 2016 and incorporated herein by reference.)
   
4.1 
Form of stock certificate for the common stock, par value $.0001 of the Company. (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 1997 on May 14, 1997 and incorporated herein by reference.)
   
4.2 Form of Indenture, dated January 1, 1992. (Filed as an exhibit to Form S-3 Registration Statement filed on December 19, 1991 and incorporated herein by reference.)
   
4.3 
Agreement of Resignation, Appointment and Acceptance dated February 15, 2008. (Filed as an exhibit to Form 10-K for the year ended December 31, 2007 on February 28, 2008 and incorporated herein by reference.)
   
4.4 
First Supplemental Indenture, dated February 26, 1997. (Filed as an exhibit to Form 8-K on March 14, 1997 and incorporated herein by reference.)
   
4.5 
8-1/8% Debentures due April 1, 2097. (Filed as an exhibit to Form 8-K on April 8, 1997 and incorporated herein by reference.)
   
4.6 
   
4.7 
Indenture, dated August 4, 2003. (Filed as an exhibit to Form S-3 Registration Statement on August 4, 2003 and incorporated herein by reference.)
 �� 
4.8 
Corporate Commercial Paper - Master Note between and among Amgen Inc., as Issuer, Cede & Co., as Nominee of The Depository Trust Company, and Citibank, N.A., as Paying Agent.(Filed (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 1998 on May 13, 1998 and incorporated herein by reference.)
   
4.9 
   
4.10 
   
4.11 
   
4.12 
   
4.13 
   
4.14 
   
4.15 
   
4.16 
   

Exhibit No.Description
4.17 
   
4.18 
   
4.19 
Indenture, dated May 22, 2014, between Amgen Inc. and The Bank of New York Mellon Trust Company, N.A., as Trustee. (Filed as an exhibit to Form 8-K on May 22, 2014 and incorporated herein by reference.)
   
4.20 
   
4.21 
   
4.22 
   
4.23 
Form of Permanent Global Certificate for the Company’s 0.410% bonds due 2023.(Filed as an exhibit on Form 8-K on March 8, 2016 and incorporated herein by reference.)
4.24
Terms of the Bonds for the Company’s 0.410% bonds due 2023. (Filed as an exhibit on Form 8-K on March 8, 2016 and incorporated herein by reference.)
4.24
Terms of the Bonds for the Company’s 0.410% bonds due 2023. (Filed as an exhibit on Form 8-K on March 8, 2016 and incorporated herein by reference.)
   
4.25 
   
4.26 
4.27
   
4.284.27 
   
4.294.28 
   
10.1+ 
Amgen Inc. Amended and Restated 2009 Equity Incentive Plan. (Filed as Appendix C to the Definitive Proxy Statement on Schedule 14A on April 8, 2013 and incorporated herein by reference.)
   
10.2+ 
First Amendment to Amgen Inc. Amended and Restated 2009 Equity Incentive Plan, effective March 4, 2015. (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2015 on April 27, 2015 and incorporated herein by reference.)
   
10.3+ 
Second Amendment to Amgen Inc. Amended and Restated 2009 Equity Incentive Plan, effective March 2, 2016. (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2016 on May 2, 2016 and incorporated herein by reference.)
   
10.4+ 
Form of Stock Option Agreement for the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan. (As Amended on December 7, 2018.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2018 on February 13, 2019 and incorporated herein by reference.)
10.5+
Form of Restricted Stock Unit Agreement for the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan. (As Amended on December 7, 2018.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2018 on February 13, 2019 and incorporated herein by reference.)
10.6+
Amgen Inc. 2009 Performance Award Program. (As Amended on December 12, 20172017.).) (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2018 and incorporated herein by reference.)
   

Exhibit No.Description
10.5+10.7+ 
Form of Restricted StockPerformance Unit Agreement for the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan.Performance Award Program. (As Amended on December 12,7, 2018.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2018 on February 13, 2019 and incorporated herein by reference.)
10.8+
Amgen Inc. 2009 Director Equity Incentive Program. (As Amended on October 24, 2017.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2018 and incorporated herein by reference.)
   
10.6+10.9+ 
Form of Grant of Non-Qualified Stock Option Agreement for the Amgen Inc. 2009 Performance AwardDirector Equity Incentive Program. (As Amended on December 31, 2017.) (Filed as an exhibit to Form 10-K for the year ended December 31, 20178-K on February 13, 2017May 8, 2009 and incorporated herein by reference.)
   
10.7+10.10+ 
Form of PerformanceRestricted Stock Unit Agreement for the Amgen Inc. 2009 Performance AwardDirector Equity Incentive Program. (As Amended on December 12,October 24, 2017.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2018 and incorporated herein by reference.)
   
10.8+10.11+ 
Form of Cash-Settled Restricted Stock Unit Agreement for the Amgen Inc. 2009 Director Equity Incentive Program. (As Amended on October 24, 2017.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2018 and incorporated herein by reference.)
10.9+
Form of Grant of Non-Qualified Stock Option Agreement for the Amgen Inc. 2009 Director Equity Incentive Program. (Filed as an exhibit to Form 8-K on May 8, 2009 and incorporated herein by reference.)
10.10+
Form of Restricted Stock Unit Agreement for the Amgen Inc. 2009 Director Equity Incentive Program. (As Amended on October 24, 2017.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2018 and incorporated herein by reference.)
10.11+
Form of Cash-Settled Restricted Stock Unit Agreement for the Amgen 2009 Director Equity Incentive Program. (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2018 and incorporated herein by reference.)
   
10.12+ 
Amgen Inc. Supplemental Retirement Plan. (As Amended and Restated effective October 16, 2013.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2013 on February 24, 2014 and incorporated herein by reference.)
   
10.13+ 
First Amendment to the Amgen Inc. Supplemental Retirement Plan, effective October 14, 2016. (Filed as an exhibit to Form 10-Q for the quarter ended September 30, 2016 on October 28, 2016 and incorporated herein by reference.)
   
10.14+ 
Amended and Restated Amgen Change of Control Severance Plan. (As Amended and Restated effective December 9, 2010 and subsequently amended effective March 2, 2011.)(Filed (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2011 on May 10, 2011 and incorporated herein by reference.)
   
10.15+ 
Amgen Inc. Executive Incentive Plan. (As Amended and Restated effective January 1, 2009.)(Filed (Filed as an exhibit to Form 10-Q for the quarter ended September 30, 2008 on November 7, 2008 and incorporated herein by reference.)
   
10.16+ 
First Amendment to the Amgen Inc. Executive Incentive Plan, effective December 13, 20122012.. (Filed as an exhibit to Form 10-K for the year ended December 31, 2012 on February 27, 2013 and incorporated herein by reference.)
   
10.17+ 
Second Amendment to the Amgen Inc. Executive Incentive Plan, effective January 1, 2017.(Filed (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2017 on April 27, 2017 and incorporated herein by reference.)
   
10.18+ 
Amgen Nonqualified Deferred Compensation Plan. (As Amended and Restated effective October 16, 2013.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2013 on February 24, 2014 and incorporated herein by reference.)
   
10.19+ 
First Amendment to the Amgen Nonqualified Deferred Compensation Plan, effective October 14, 2016. (Filed as an exhibit to Form 10-Q for the quarter ended September 30, 2016 on October 28, 2016 and incorporated herein by reference.)
   
10.20+ 
Agreement between Amgen Inc. and David W. Meline, effective July 21, 2014. (Filed as an exhibit to Form 10-Q for the quarter ended September 30, 2014 on October 29, 2014 and incorporated herein by reference.)
   
10.21+ 
Agreement between Amgen Inc. and Jonathan Graham, dated May 11, 2015.(Filed (Filed as an exhibit to Form 10-Q/A for the quarter ended June 30, 2015 on August 6, 2015 and incorporated herein by reference.)
   
10.22+ 
Agreement between Amgen Inc. and Lori Johnston, dated October 25, 2016.(Filed (Filed as an exhibit to Form 10-K for the year ended December 31, 2016 on February 14, 2017 and incorporated herein by reference.)
   
10.2310.23+ 
Agreement between Amgen Inc. and Murdo Gordon, dated July 25, 2018. (Filed as an exhibit to Form 10-Q for the quarter ended September 30, 2018 on October 31, 2018 and incorporated herein by reference.)
10.24
   

Exhibit No.Description
10.2410.25 
Amendment No. 1 to the Credit Agreement, dated March 9, 2018, among Amgen Inc., the Banks therein named, and Citibank, N.A., as administrative agent.(Filed (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2018 on April 25, 2018 and incorporated herein by reference.)
   

10.25
10.26 
Collaboration and License Agreement between Amgen Inc. and Celltech R&D Limited dated May 10, 2002 (portions of the exhibit have been omitted pursuant to a request for confidential treatment) and Amendment No. 1, effective June 9, 2003, to Collaboration and License Agreement between Amgen Inc. and Celltech R&D Limited (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-K/A for the year ended December 31, 2012 on July 31, 2013 and incorporated herein by reference.)
   
10.2610.27 
Amendment No. 2 to Collaboration and License Agreement, effective November 14, 2016, between Amgen Inc. and Celltech R&D Limited (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-K for the year ended December 31, 2016 on February 14, 2017 and incorporated herein by reference.)
   
10.2710.28* 
10.29
Collaboration Agreement, dated April 22, 1994, by and between Bayer Corporation (formerly Miles, Inc.) and Onyx Pharmaceuticals, Inc.(Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2011 by Onyx Pharmaceuticals, Inc. on May 10, 2011 and incorporated herein by reference.)
   
10.2810.30 
Amendment to Collaboration Agreement, dated April 24, 1996, by and between Bayer Corporation and Onyx Pharmaceuticals, Inc. (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2006 by Onyx Pharmaceuticals, Inc. on May 10, 2006 and incorporated herein by reference.)
   
10.2910.31 
Amendment to Collaboration Agreement, dated February 1, 1999, by and between Bayer Corporation and Onyx Pharmaceuticals, Inc. (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2006 by Onyx Pharmaceuticals, Inc. on May 10, 2006 and incorporated herein by reference.)
   
10.3010.32 
Settlement Agreement and Release, dated October 11, 2011, by and between Bayer Corporation, Bayer AG, Bayer HealthCare LLC and Bayer Pharma AG and Onyx Pharmaceuticals, Inc. (Filed as an exhibit to Form 10-K for the year ended December 31, 2011 by Onyx Pharmaceuticals, Inc. on February 27, 2012 and incorporated herein by reference.)
   
10.3110.33 
Fourth Amendment to Collaboration Agreement, dated October 11, 2011, by and between Bayer Corporation and Onyx Pharmaceuticals, Inc. (Filed as an exhibit to Form 10-K for the year ended December 31, 2011 by Onyx Pharmaceuticals, Inc. on February 27, 2012 and incorporated herein by reference.)
   
10.3210.34 
Side Letter Regarding Collaboration Agreement, dated May 29, 2015, by and between Bayer HealthCare LLC and Onyx Pharmaceuticals, Inc. (Filed as an exhibit to Form 10-Q for the quarter ended June 30, 2015 on August 5, 2015 and incorporated herein by reference.)
   
10.3310.35 
Sourcing and Supply Agreement, dated January 6, 2017, by and between Amgen USA Inc., a wholly owned subsidiary of Amgen Inc., and DaVita Inc. (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2017 on April 27, 2017 and incorporated herein by reference.)
   
10.3410.36 
Exclusive License and Collaboration Agreement, dated August 28, 2015, by and between Amgen Inc. and Novartis Pharma AG (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-Q for the quarter ended June 30, 2017 on July 26, 2017 and incorporated herein by reference.)
   
10.3510.37 
Amendment No. 1 to the Exclusive License and Collaboration Agreement, dated April 21, 2017, by and between Amgen Inc. and Novartis Pharma AG (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-Q for the quarter ended June 30, 2017 on July 26, 2017 and incorporated herein by reference.)
   
10.3610.38 
Amendment No. 2 to the Exclusive License and Collaboration Agreement, dated April 21, 2017, by and between Amgen Inc. and Novartis Pharma AG (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-Q for the quarter ended June 30, 2017 on July 26, 2017 and incorporated herein by reference.)
   
10.3710.39 
Collaboration Agreement, dated April 21, 2017, by and between Amgen Inc. and Novartis Pharma AG (portions of the exhibit have been omitted pursuant to a request for confidential treatment). (Filed as an exhibit to Form 10-Q for the quarter ended June 30, 2017 on July 26, 2017 and incorporated herein by reference.)
   

Exhibit No.Description
10.3810.40 
Amendment No. 1 to the Collaboration Agreement, dated March 20, 2018, by and between Novartis Pharma AG and Amgen Inc. (portions of the exhibit have been omitted pursuant to a request for confidential treatment.)treatment). (Filed as an exhibit to Form 10-Q for the quarter ended March 31, 2018 on April 25, 2018 and incorporated herein by reference.)
   

31* 
   
32** 
   
101.INS*101.INS XBRL Instance Document.Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.
   
101.SCH* XBRL Taxonomy Extension Schema Document.
   
101.CAL* XBRL Taxonomy Extension Calculation Linkbase Document.
   
101.DEF* XBRL Taxonomy Extension Definition Linkbase Document.
   
101.LAB* XBRL Taxonomy Extension Label Linkbase Document.
   
101.PRE* XBRL Taxonomy Extension Presentation Linkbase Document.
____________________________
(* = filed herewith)
(** = furnished herewith and not “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended)
(+ = management contract or compensatory plan or arrangement)


SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Quarterly Report to be signed on its behalf by the undersigned, thereunto duly authorized.
  Amgen Inc.
  (Registrant)
    
Date:July 26, 201830, 2019By: 
/S/    DAVID W. MELINE
    David W. Meline
    Executive Vice President and Chief Financial Officer
    (Principal Financial and Accounting Officer)




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