UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
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 March 31,June 30, 2018
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission 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
(Address of principal executive offices) (Zip Code)
(805) 447-1000
(Registrant’s telephone number, including area code)
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 filer þ
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.¨
As of AprilJuly 18, 2018, the registrant had 661,706,007647,272,067 shares 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 shareper-share data)
(Unaudited)
 
Three months ended
March 31,
Three months ended
June 30,
 Six months ended
June 30,
2018 20172018 2017 2018 2017
Revenues:          
Product sales$5,343
 $5,199
$5,679
 $5,574
 $11,022
 $10,773
Other revenues211
 265
380
 236
 591
 501
Total revenues5,554
 5,464
6,059
 5,810
 11,613
 11,274
          
Operating expenses:          
Cost of sales944
 996
1,024
 1,024
 1,968
 2,020
Research and development760
 769
869
 873
 1,629
 1,642
Selling, general and administrative1,127
 1,064
1,353
 1,209
 2,480
 2,273
Other(3) 44
(19) 6
 (22) 50
Total operating expenses2,828
 2,873
3,227
 3,112
 6,055
 5,985
          
Operating income2,726
 2,591
2,832
 2,698
 5,558
 5,289
          
Interest expense, net338
 326
347
 321
 685
 647
Interest and other income, net231
 195
162
 165
 393
 360
          
Income before income taxes2,619
 2,460
2,647
 2,542
 5,266
 5,002
          
Provision for income taxes308
 389
351
 391
 659
 780
          
Net income$2,311
 $2,071
$2,296
 $2,151
 $4,607
 $4,222
          
Earnings per share:          
Basic$3.27
 $2.81
$3.50
 $2.93
 $6.76
 $5.74
Diluted$3.25
 $2.79
$3.48
 $2.91
 $6.73
 $5.71
          
Shares used in calculation of earnings per share:          
Basic707
 737
656
 734
 682
 736
Diluted711
 741
660
 738
 685
 740
          
Dividends paid per share$1.32
 $1.15
$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
March 31,
 2018 2017
Net income$2,311
 $2,071
Other comprehensive (loss) income, net of reclassification adjustments and taxes:   
Foreign currency translation gains29
 24
Effective portion of cash flow hedges6
 (73)
Net unrealized (losses) gains on available-for-sale securities(352) 158
Other2
 
Other comprehensive (loss) income, net of taxes(315) 109
Comprehensive income$1,996
 $2,180
 Three months ended
June 30,
 Six months ended
June 30,
 2018 2017 2018 2017
Net income$2,296
 $2,151
 $4,607
 $4,222
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)
Gains (losses) on available-for-sale securities9
 80
 (334) 238
Other
 (1) 2
 (1)
Other comprehensive income (loss), net of taxes121
 (87) (185) 22
Comprehensive income$2,417
 $2,064
 $4,422
 $4,244

See accompanying notes.

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

March 31,
2018
 December 31,
2017
June 30,
2018
 December 31,
2017
(Unaudited)  (Unaudited)  
ASSETS
Current assets:      
Cash and cash equivalents$9,741
 $3,800
$10,131
 $3,800
Marketable securities22,431
 37,878
19,264
 37,878
Trade receivables, net3,633
 3,237
3,504
 3,237
Inventories2,952
 2,834
3,063
 2,834
Other current assets1,932
 1,727
2,008
 1,727
Total current assets40,689
 49,476
37,970
 49,476
      
Property, plant and equipment, net4,943
 4,989
4,922
 4,989
Intangible assets, net8,779
 8,609
8,443
 8,609
Goodwill14,771
 14,761
14,724
 14,761
Other assets1,982
 2,119
1,625
 2,119
Total assets$71,164
 $79,954
$67,684
 $79,954
      
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:      
Accounts payable$1,089
 $1,352
$1,026
 $1,352
Accrued liabilities7,207
 6,516
5,891
 6,516
Current portion of long-term debt2,183
 1,152
4,288
 1,152
Total current liabilities10,479
 9,020
11,205
 9,020
      
Long-term debt33,358
 34,190
30,209
 34,190
Long-term deferred tax liabilities1,215
 1,166
1,155
 1,166
Long-term tax liabilities9,166
 9,099
8,763
 9,099
Other noncurrent liabilities1,326
 1,238
1,443
 1,238
      
Contingencies and commitments
 

 
      
Stockholders’ equity:      
Common stock and additional paid-in capital; $0.0001 par value; 2,750.0 shares authorized; outstanding — 666.4 shares in 2018 and 722.2 shares in 201731,001
 30,992
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
Accumulated deficit(14,387) (5,072)(15,266) (5,072)
Accumulated other comprehensive loss(994) (679)(873) (679)
Total stockholders’ equity15,620
 25,241
14,909
 25,241
Total liabilities and stockholders’ equity$71,164
 $79,954
$67,684
 $79,954

See accompanying notes.

AMGEN INC.
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(In millions)
(Unaudited)
Three months ended
March 31,
Six months ended
June 30,
2018 20172018 2017
Cash flows from operating activities:      
Net income$2,311
 $2,071
$4,607
 $4,222
Depreciation and amortization471
 524
955
 1,042
Share-based compensation expense54
 60
147
 156
Deferred income taxes(72) (77)(114) (180)
Other items, net44
 15
34
 109
Changes in operating assets and liabilities, net of acquisitions:   
Changes in operating assets and liabilities, net of acquisition:   
Trade receivables, net(384) (47)(348) (391)
Inventories(107) (125)(135) (90)
Other assets(135) (155)(232) (194)
Accounts payable(278) (20)(329) (43)
Accrued income taxes, net353
 268
(314) (120)
Long-term tax liability63
 124
134
 186
Other liabilities407
 (253)424
 14
Net cash provided by operating activities2,727
 2,385
4,829
 4,711
Cash flows from investing activities:      
Purchases of marketable securities(2,732) (7,077)(6,733) (19,244)
Proceeds from sales of marketable securities16,694
 5,612
23,723
 14,425
Proceeds from maturities of marketable securities900
 1,528
993
 3,284
Cash acquired in acquisition, net of cash paid197
 
197
 
Purchases of property, plant and equipment(155) (168)(342) (353)
Other2
 (52)6
 (82)
Net cash provided by (used in) investing activities14,906
 (157)17,844
 (1,970)
Cash flows from financing activities:      
Net proceeds from issuance of debt
 3,485
Repayment of debt
 (605)(500) (4,405)
Net change in commercial paper
 959
Repurchases of common stock(10,697) (586)(13,941) (1,562)
Dividends paid(951) (847)(1,816) (1,693)
Other(44) (73)(85) (137)
Net cash used in financing activities(11,692) (2,111)(16,342) (3,353)
Increase in cash and cash equivalents5,941
 117
Increase (decrease) in cash and cash equivalents6,331
 (612)
Cash and cash equivalents at beginning of period3,800
 3,241
3,800
 3,241
Cash and cash equivalents at end of period$9,741
 $3,358
$10,131
 $2,629

See accompanying notes.

AMGEN INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
March 31,June 30, 2018
(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 March 31,June 30, 2018 and 2017, 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, 2017.2017, 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.
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 any variable 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 $7.7$7.8 billion and $7.6 billion as of March 31,June 30, 2018 and December 31, 2017, respectively.
Recent accounting pronouncementsRevenues
Adoption of new revenue recognition standard
In May 2014, 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 usingapplying the modified-retrospective method.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-effectcumulative effect of adoption as an adjustment to retained earningsAccumulated 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 the changes in fair values of equity securities in our portfolio in the future. See Note 7,8, 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 disclose qualitative and quantitative information about leasing arrangements. The new standard requires a modified-retrospective approach to adoption and is effective for interim and annual periods beginning on January 1, 2019, but may be adopted earlier. We expect to adopt this standard beginning in the first quarter of 2019. We do not expect that this standard will have a material impact on our Condensed Consolidated Statements of Income, but we do expect that upon adoption, it will have a material impact on our assets and liabilities on our Condensed Consolidated Balance Sheets. The primary effect of adoption will be the requirement to record right-of-use assets and corresponding lease obligationsobligation liabilities for current operating leases. In addition, the standard will requirerequires that we update the systems, processes and controls we use to track, record and account for our lease portfolio. We have selected a lease 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.
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” model with an “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 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. 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.
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 the accounting implications of the 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.
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 $825$800 million to $900 million of pre-taxpretax charges in connection with our restructuring, including:including (i) separation and other headcount-related costs of $560$540 million to $600 million with respect to staff reductions and (ii) asset-related charges of $265$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 March 31,June 30, 2018, we incurred a total of $558$549 million of separation costs and other headcount-related costs and $243$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 March 31,June 30, 2018 and 2017, were not significant. As of March 31,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 research and development (R&D)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 expenseexpenses 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 relationshipsrelationship 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 iswas $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 incomeprobability-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 the valuation of licensing rights, contingent consideration and 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
AdoptionRevenues by product and by geographic area
We operate in one business segment: human therapeutics. Therefore, results of new revenue recognition standard
On January 1, 2018, we adopted the FASB’s new accounting standard that amends the guidanceour operations are reported on a consolidated basis for the recognitionpurposes of revenue from contractssegment reporting, consistent with customers to transfer goodsinternal management reporting. Revenues by product and services by using the modified-retrospective method applied to those contracts that were not completed as of January 1, 2018. The results for the reporting period beginning after January 1, 2018,geographic area, based on customers’ locations, are presented in accordance with the new standard, although comparative information has not been restated and continuesbelow. Rest-of-world (ROW) revenues relate 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 noted below.
Revenues
Product sales
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 we expect to be entitled to, net of accruals for estimated rebates, wholesaler chargebacks, discounts and other deductions (collectively, sales deductions) and returns.
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 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 non-refundable, 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 promisessold principally in the contract. The consideration under the arrangement is then allocated to each separate distinct performance obligation based on their 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.Europe. Revenues were as follows (in millions):
The consideration allocated to each distinct performance obligation is recognized as revenue when control is transferred for the related goods or services. 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.
  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

  Six months ended June 30,
  2018 2017
  US ROW Total US ROW Total
Enbrel®
 2,302
 105
 2,407
 2,529
 118
 2,647
Neulasta®
 1,957
 298
 2,255
 1,985
 312
 2,297
Prolia®
 716
 388
 1,104
 605
 325
 930
Aranesp®
 466
 460
 926
 566
 480
 1,046
Sensipar® / Mimpara®
 739
 178
 917
 679
 169
 848
XGEVA®
 671
 226
 897
 590
 207
 797
EPOGEN®
 494
 
 494
 562
 
 562
Other products 1,169
 853
 2,022
 965
 681
 1,646
Total product sales(1)
 $8,514
 $2,508
 $11,022
 $8,481
 $2,292
 $10,773
Other revenues     591
     501
   Total revenues(2)
     $11,613
     $11,274
____________
(1)
Total product sales includes $20 million related to hedging losses and $33 million related to hedging gains 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, 2018 and 2017, respectively.
(2)
Prior-period amounts are not adjusted under the modified-retrospective method of adoption.
Financing and payment
Our payment terms vary by the typetypes and locationlocations of our customercustomers 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 the products are delivered or services are rendered to the customer.customers.
Practical expedients andOptional exemptions
Taxes collected from customers and remitted to government authorities and that are related to the sales of the Company’s products, primarily in Europe, are excluded from revenues.
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 expense in the Condensed Consolidated Statements of Income.
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.
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 the customer’s location, are presented below. Rest of world (ROW) revenues relate to products that are sold principally in Europe. Revenues were as follows (in millions):
  Three months ended March 31,
  2018 2017
  US ROW Total US ROW Total
Neulasta®
 $1,009
 $146
 $1,155
 $1,048
 $162
 $1,210
Enbrel®
 1,050
 55
 1,105
 1,118
 63
 1,181
Sensipar® / Mimpara®
 409
 88
 497
 337
 84
 421
Prolia®
 320
 174
 494
 279
 146
 425
Aranesp®
 225
 229
 454
 278
 233
 511
XGEVA®
 332
 113
 445
 298
 104
 402
EPOGEN®
 244
 
 244
 270
 
 270
Other products 558
 391
 949
 467
 312
 779
Total product sales1
 $4,147
 $1,196
 $5,343
 $4,095
 $1,104
 $5,199
Other revenues     211
     265
   Total revenues2
     $5,554
     $5,464
(1) Total product sales includes $34 million related to hedging losses and $57 million related to hedging gains for the three months ended March 31, 2018 and 2017, respectively.
(2) Prior-period amounts are not adjusted under the modified-retrospective method of adoption.
Sales deductions
Product sales are recorded net of sales deductions and returns, which are 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.
Product returns
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.
5. Income taxes
The effective tax rates for the three and six months ended March 31,June 30, 2018, were 13.3% and 2017, were 11.8%12.5%, respectively, compared with 15.4% and 15.8%15.6%, respectively.respectively, for the corresponding periods of the prior year.
The decrease in our effective tax rate for the three and six months ended March 31,June 30, 2018, was due primarily to the impacts of U.S. corporate tax reform, including the reduction in the U.S. statutory tax rate, offset partially by U.S.a prior year benefit associated with the effective settlement of certain state and federal tax on foreign earnings.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 income as a period expense in the year it is incurred. We have recorded no provisional amount for deferred taxes on the 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 the 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,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 audited 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, regulations and the interpretation 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. On November 29, 2017, we received a modified RAR that revised the IRS calculations but continued to propose substantial adjustments. We disagree with the proposed adjustments and are pursuing resolution through the IRS administrative appeals process, which we believe will likely not be concluded within the next 12 months. Final resolution of the IRS audit could have a material impact on our results of operations and cash flows if not resolved favorably, however, we believe our income tax reserves are appropriately provided for all open tax years. We are no longer subject to U.S. federal income tax examinations for years ended on or before December 31, 2009. We are currently under examination by a number of other state and foreign tax jurisdictions.

During the three and six months ended March 31,June 30, 2018, the gross amounts of our unrecognized tax benefits (UTBs) increased $75$80 million and $155 million, respectively, as a result of tax positions taken during the current year. Substantially all of the UTBs as of March 31,June 30, 2018, if recognized, would affect our effective tax rate.


6. 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, as determined by using the treasury stock method (collectively, dilutive securities).
The computations for basic and diluted EPS were as follows (in millions, except per-share data):
Three months ended
March 31,
Three months ended
June 30,
 Six months ended
June 30,
2018 20172018 2017 2018 2017
Income (Numerator):          
Net income for basic and diluted EPS$2,311
 $2,071
$2,296
 $2,151
 $4,607
 $4,222
          
Shares (Denominator):          
Weighted-average shares for basic EPS707
 737
656
 734
 682
 736
Effect of dilutive securities4
 4
4
 4
 3
 4
Weighted-average shares for diluted EPS711
 741
660
 738
 685
 740
          
Basic EPS$3.27
 $2.81
$3.50
 $2.93
 $6.76
 $5.74
Diluted EPS$3.25
 $2.79
$3.48
 $2.91
 $6.73
 $5.71
The decrease in weighted-average shares during three months ended March 31, 2018 compared to the prior period, was due to share repurchases. See Note 11, Stockholders’ equity. For the three and six months ended March 31,June 30, 2018 and 2017, the number of anti-dilutive 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. Investments
Available-for-sale investments
The amortized cost, gross unrealized gains, gross unrealized losses and fair values of available-for-sale investments by type of security were as follows (in millions):
Type of security as of March 31, 2018 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
value
Types of securities as of June 30, 2018 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
values
U.S. Treasury securities $5,207
 $
 $(104) $5,103
 $3,477
 $
 $(86) $3,391
Other government-related debt securities:                
U.S. 132
 
 (3) 129
 132
 
 (4) 128
Foreign and other 1,714
 3
 (43) 1,674
 1,451
 1
 (62) 1,390
Corporate debt securities:                
Financial 6,189
 1
 (137) 6,053
 4,091
 1
 (124) 3,968
Industrial 5,687
 6
 (128) 5,565
 3,957
 4
 (122) 3,839
Other 916
 1
 (21) 896
 699
 
 (23) 676
Residential-mortgage-backed securities 1,745
 
 (46) 1,699
 1,632
 
 (53) 1,579
Other mortgage- and asset-backed securities 1,293
 
 (26) 1,267
 672
 
 (20) 652
Money market mutual funds 9,234
 
 
 9,234
 7,341
 
 
 7,341
Other short-term interest-bearing securities 50
 
 
 50
 5,872
 
 
 5,872
Total available-for-sale investments $32,167
 $11
 $(508) $31,670
 $29,324
 $6
 $(494) $28,836

Type of security as of December 31, 2017 
Amortized
cost
 
Gross
unrealized
gains
 
Gross
unrealized
losses
 
Fair
value
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
 $8,313
 $1
 $(72) $8,242
Other government-related debt securities:                
U.S. 225
 
 (2) 223
 225
 
 (2) 223
Foreign and other 2,415
 18
 (11) 2,422
 2,415
 18
 (11) 2,422
Corporate debt securities:                
Financial 10,089
 17
 (34) 10,072
 10,089
 17
 (34) 10,072
Industrial 9,688
 34
 (52) 9,670
 9,688
 34
 (52) 9,670
Other 1,393
 3
 (6) 1,390
 1,393
 3
 (6) 1,390
Residential-mortgage-backed securities 2,198
 
 (30) 2,168
 2,198
 
 (30) 2,168
Other mortgage- and asset-backed securities 2,312
 
 (15) 2,297
 2,312
 
 (15) 2,297
Money market mutual funds 3,245
 
 
 3,245
 3,245
 
 
 3,245
Other short-term interest-bearing securities 1,440
 
 
 1,440
 1,440
 
 
 1,440
Total interest-bearing securities 41,318
 73
 (222) 41,169
 41,318
 73
 (222) 41,169
Equity securities 135
 14
 
 149
 135
 14
 
 149
Total available-for-sale investments $41,453
 $87
 $(222) $41,318
 $41,453
 $87
 $(222) $41,318
The fair values of available-for-sale investments by location in the Condensed Consolidated Balance Sheets were as follows (in millions):
Condensed Consolidated Balance Sheets location March 31,
2018
 December 31,
2017
Condensed Consolidated Balance Sheets locations June 30,
2018
 December 31,
2017
Cash and cash equivalents $9,239
 $3,291
 $9,572
 $3,291
Marketable securities 22,431
 37,878
 19,264
 37,878
Other assets 
 149
 
 149
Total available-for-sale investments $31,670
 $41,318
 $28,836
 $41,318
Cash and cash equivalents in the above table excludes bank account cash of $502$559 million and $509 million as of March 31,June 30, 2018 and December 31, 2017, 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, as well as Equity securities discussed below.policies.
The fair values of available-for-sale interest-bearing security investments by contractual maturity, except for mortgage- and asset-backed securities that do not have a single maturity date, were as follows (in millions):
Contractual maturity March 31,
2018
 December 31,
2017
Contractual maturities June 30,
2018
 December 31,
2017
Maturing in one year or less $9,403
 $6,733
 $13,265
 $6,733
Maturing after one year through three years 6,579
 12,820
 4,066
 12,820
Maturing after three years through five years 10,934
 13,836
 7,940
 13,836
Maturing after five years through ten years 1,788
 3,263
 1,334
 3,263
Maturing after ten years 
 52
 
 52
Mortgage- and asset-backed securities 2,966
 4,465
 2,231
 4,465
Total interest-bearing securities $31,670
 $41,169
 $28,836
 $41,169

For the three months ended March 31,June 30, 2018 and 2017, realized gains on interest-bearing securities were $17$5 million and $31$34 million, respectively, and realized losses on interest-bearing securities were $151$120 million and $84$87 million, respectively. For the six months ended June 30, 2018 and 2017, realized gains on interest-bearing securities were $22 million and $65 million, respectively, and realized losses on interest-bearing securities were $271 million and $171 million, respectively. The cost of securities sold is based on the specific-identification method.
The fair values and gross unrealized losses of available-for-sale investments 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
Type of security as of March 31, 2018 Fair value Unrealized losses Fair value Unrealized losses
Types of securities as of June 30, 2018 Fair values Unrealized losses Fair values Unrealized losses
U.S. Treasury securities $5,023
 $(103) $53
 $(1) $3,355
 $(85) $36
 $(1)
Other government-related debt securities:                
U.S. 103
 (2) 26
 (1) 102
 (3) 26
 (1)
Foreign and other 1,367
 (39) 88
 (4) 1,209
 (56) 112
 (6)
Corporate debt securities:                
Financial 5,648
 (128) 325
 (9) 3,673
 (115) 258
 (9)
Industrial 4,702
 (117) 397
 (11) 3,244
 (110) 314
 (12)
Other 727
 (18) 93
 (3) 584
 (20) 65
 (3)
Residential-mortgage-backed securities 1,464
 (39) 226
 (7) 1,267
 (42) 303
 (11)
Other mortgage- and asset-backed securities 1,105
 (22) 162
 (4) 540
 (16) 112
 (4)
Total $20,139
 $(468) $1,370
 $(40) $13,974
 $(447) $1,226
 $(47)
 Less than 12 months 12 months or more Less than 12 months 12 months or more
Type of security as of December 31, 2017 Fair value Unrealized losses Fair value Unrealized losses
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) $7,728
 $(70) $195
 $(2)
Other government-related debt securities:                
U.S. 188
 (1) 34
 (1) 188
 (1) 34
 (1)
Foreign and other 1,163
 (9) 115
 (2) 1,163
 (9) 115
 (2)
Corporate debt securities:                
Financial 5,928
 (28) 462
 (6) 5,928
 (28) 462
 (6)
Industrial 5,760
 (43) 612
 (9) 5,760
 (43) 612
 (9)
Other 868
 (4) 117
 (2) 868
 (4) 117
 (2)
Residential-mortgage-backed securities 1,838
 (24) 276
 (6) 1,838
 (24) 276
 (6)
Other mortgage- and asset-backed securities 1,777
 (12) 250
 (3) 1,777
 (12) 250
 (3)
Total $25,250
 $(191) $2,061
 $(31) $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 and adverse conditions related specifically to the security, including 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 March 31,June 30, 2018 and December 31, 2017, 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 $155$200 million and $149 million as of March 31,June 30, 2018 and December 31, 2017, 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, as well as Available-for-sale investments discussed above.policies. Gains and losses recognized on equity securities, including gains and losses recognized on sales, were not material for the three and six months ended March 31,June 30, 2018 and 2017. Unrealized gains and losses on equity securities held as of March 31, 2018, were not material.
Limited partnership investments
We held limited partnership investments of $254$266 million and $213 million as of March 31,June 30, 2018 and December 31, 2017, 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 March 31,June 30, 2018, unfunded additional commitments to be made during the next several years for these investments were approximately $90 million.not material.
8.9. Inventories
Inventories consisted of the following (in millions):
March 31,
2018
 December 31,
2017
June 30,
2018
 December 31,
2017
Raw materials$275
 $232
$303
 $232
Work in process1,627
 1,668
1,702
 1,668
Finished goods1,050
 934
1,058
 934
Total inventories$2,952
 $2,834
$3,063
 $2,834
9.10. Goodwill and other intangible assets
Goodwill
Changes in the carrying amount of goodwill were as follows (in millions):
Three months ended
March 31, 2018
Six months ended
June 30, 2018
Beginning balance$14,761
$14,761
Addition from K-A acquisition6
6
Currency translation adjustment4
(43)
Ending balance$14,771
$14,724

Other intangible assets
Other intangible assets consisted of the following (in millions):
March 31, 2018 December 31, 2017June 30, 2018 December 31, 2017
Gross
carrying
amount
 
Accumulated
amortization
 
Intangible
assets, net
 
Gross
carrying
amount
 
Accumulated
amortization
 
Intangible
assets, net
Gross
carrying
amounts
 
Accumulated
amortization
 
Intangible
assets, net
 
Gross
carrying
amounts
 
Accumulated
amortization
 
Intangible
assets, net
Finite-lived intangible assets:                      
Developed-product-technology rights$12,609
 $(6,974) $5,635
 $12,589
 $(6,796) $5,793
$12,581
 $(7,139) $5,442
 $12,589
 $(6,796) $5,793
Licensing rights3,745
 (1,699) 2,046
 3,275
 (1,601) 1,674
3,772
 (1,810) 1,962
 3,275
 (1,601) 1,674
Marketing-related rights1,316
 (948) 368
 1,319
 (920) 399
1,303
 (967) 336
 1,319
 (920) 399
R&D technology rights1,177
 (834) 343
 1,161
 (804) 357
1,155
 (838) 317
 1,161
 (804) 357
Total finite-lived intangible assets18,847
 (10,455) 8,392
 18,344
 (10,121) 8,223
18,811
 (10,754) 8,057
 18,344
 (10,121) 8,223
Indefinite-lived intangible assets:                      
In-process research and development387
 
 387
 386
 
 386
386
 
 386
 386
 
 386
Total other intangible assets$19,234
 $(10,455) $8,779
 $18,730
 $(10,121) $8,609
$19,197
 $(10,754) $8,443
 $18,730
 $(10,121) $8,609
Developed-product-technology rights consist of rights related to marketed products acquired in business combinations. Licensing rights consist primarily of contractual rights acquired in business combinations to receive future milestone, royalty and profit 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 threesix months ended March 31,June 30, 2018, licensing rights increased due to the K-A share acquisition. See Note 3, Business combinations. Marketing-related intangible assets consist primarily of rights related to the sale and distribution of marketed products. R&D technology rights consist of technology used in R&D with 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 March 31,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 the 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 amountamounts may not be recoverable and upon the establishment of technological feasibility or regulatory approval.
During the three months ended March 31,June 30, 2018 and 2017, we recognized amortization expense associated with our finite-lived intangible assets of $332 million and $371 million, respectively. During the six months ended June 30, 2018 and 2017, we recognized amortization expense associated with our finite-lived intangible assets of $652 million and $744 million, respectively. Amortization of intangible assets is included primarily in Cost of sales in the Condensed Consolidated Statements of Income, of $320 million and $373 million, respectively.Income. The total estimated amortization expense for our finite-lived intangible assets for the remaining ninesix months ending December 31, 2018, and the years ending December 31, 2019, 2020, 2021, 2022 and 2023, are $1.0$0.7 billion, $1.3 billion, $1.2 billion, $1.0 billion, $0.9 billion and $0.9 billion, respectively.

10.11. Financing arrangements
Our borrowings consisted of the following (in millions):
March 31,
2018
 December 31,
2017
June 30,
2018
 December 31,
2017
6.15% notes due 2018 (6.15% 2018 Notes)$500
 $500
$
 $500
4.375% €550 million notes due 2018 (4.375% 2018 euro Notes)684
 653
642
 653
5.70% notes due 2019 (5.70% 2019 Notes)1,000
 1,000
1,000
 1,000
1.90% notes due 2019 (1.90% 2019 Notes)700
 700
700
 700
Floating Rate Notes due 2019550
 550
550
 550
2.20% notes due 2019 (2.20% 2019 Notes)1,400
 1,400
1,400
 1,400
2.125% €675 million notes due 2019 (2.125% 2019 euro Notes)832
 810
789
 810
4.50% notes due 2020 (4.50% 2020 Notes)300
 300
300
 300
2.125% notes due 2020 (2.125% 2020 Notes)750
 750
750
 750
Floating Rate Notes due 2020300
 300
300
 300
2.20% notes due 2020 (2.20% 2020 Notes)700
 700
700
 700
3.45% notes due 2020 (3.45% 2020 Notes)900
 900
900
 900
4.10% notes due 2021 (4.10% 2021 Notes)1,000
 1,000
1,000
 1,000
1.85% notes due 2021 (1.85% 2021 Notes)750
 750
750
 750
3.875% notes due 2021 (3.875% 2021 Notes)1,750
 1,750
1,750
 1,750
1.25% €1,250 million notes due 2022 (1.25% 2022 euro Notes)1,541
 1,501
1,461
 1,501
2.70% notes due 2022 (2.70% 2022 Notes)500
 500
500
 500
2.65% notes due 2022 (2.65% 2022 Notes)1,500
 1,500
1,500
 1,500
3.625% notes due 2022 (3.625% 2022 Notes)750
 750
750
 750
0.41% CHF700 million bonds due 2023 (0.41% 2023 Swiss franc Bonds)734
 719
707
 719
2.25% notes due 2023 (2.25% 2023 Notes)750
 750
750
 750
3.625% notes due 2024 (3.625% 2024 Notes)1,400
 1,400
1,400
 1,400
3.125% notes due 2025 (3.125% 2025 Notes)1,000
 1,000
1,000
 1,000
2.00% €750 million notes due 2026 (2.00% 2026 euro Notes)924
 901
876
 901
2.60% notes due 2026 (2.60% 2026 Notes)1,250
 1,250
1,250
 1,250
5.50% £475 million notes due 2026 (5.50% 2026 pound sterling Notes)666
 642
627
 642
3.20% notes due 2027 (3.20% 2027 Notes)
1,000
 1,000
1,000
 1,000
4.00% £700 million notes due 2029 (4.00% 2029 pound sterling Notes)981
 946
925
 946
6.375% notes due 2037 (6.375% 2037 Notes)552
 552
552
 552
6.90% notes due 2038 (6.90% 2038 Notes)291
 291
291
 291
6.40% notes due 2039 (6.40% 2039 Notes)466
 466
466
 466
5.75% notes due 2040 (5.75% 2040 Notes)412
 412
412
 412
4.95% notes due 2041 (4.95% 2041 Notes)600
 600
600
 600
5.15% notes due 2041 (5.15% 2041 Notes)974
 974
974
 974
5.65% notes due 2042 (5.65% 2042 Notes)487
 487
487
 487
5.375% notes due 2043 (5.375% 2043 Notes)261
 261
261
 261
4.40% notes due 2045 (4.40% 2045 Notes)2,250
 2,250
2,250
 2,250
4.563% notes due 2048 (4.563% 2048 Notes)1,415
 1,415
1,415
 1,415
4.663% notes due 2051 (4.663% 2051 Notes)3,541
 3,541
3,541
 3,541
Other notes due 2097100
 100
100
 100
Unamortized bond discounts, premiums and issuance costs, net(920) (929)
Unamortized bond discounts, premiums, issuance costs and fair value adjustments, net(1,129) (929)
Total carrying value of debt35,541
 35,342
34,497
 35,342
Less current portion(2,183) (1,152)(4,288) (1,152)
Total noncurrent debt$33,358
 $34,190
$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.


11.12. Stockholders’ equity
Stock repurchase program
Activity under our stock repurchase program, on a trade date basis, was as follows (in millions):
 2018 2017
 Shares Dollars  Shares Dollars
First quarter56.4
 $10,787
 3.4
 $555
 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
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. As of March 31, 2018, $3.6 billion remained available under our stock repurchase program. In April 2018, 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, $5.4 billion remained available under our stock repurchase program.
Dividends
In March 2018 and December 2017, the Board of Directors declared a quarterly cash dividenddividends of $1.32 per share of common stock, which will bewere paid in June 2018. In December 2017, the Board of Directors declared a quarterly cash dividend of $1.32 per share of common stock, which was paid in2018 and March 2018.2018, respectively.
Accumulated other comprehensive income (loss)
The components of AOCI were as follows (in millions):
Foreign
currency
translation
 
Cash flow
hedges
 
Available-for-sale
securities
 Other AOCI
Foreign
currency
translation
 
Cash flow
hedges
 
Available-for-sale
securities
 Other AOCI
Balance as of December 31, 2017$(529) $(6) $(144) $
 $(679)$(529) $(6) $(144) $
 $(679)
Cumulative effect of change in accounting principle, net of tax(1)
 
 (9) 
 (9)
 
 (9) 
 (9)
Foreign currency translation adjustments29
 
 
 
 29
29
 
 
 
 29
Unrealized gains (losses)
 149
 (482) 
 (333)
 149
 (482) 
 (333)
Reclassification adjustments to income
 (130) 134
 
 4

 (130) 134
 
 4
Other
 
 
 2
 2

 
 
 2
 2
Income taxes
 (13) 5
 
 (8)
 (13) 5
 
 (8)
Balance as of March 31, 2018$(500) $
 $(496) $2
 $(994)(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)
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.____________
(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.

The reclassificationsReclassifications out of AOCI and into earnings were as follows (in millions):
 Three months ended
March 31,
  Three months ended
June 30,
 
Components of AOCI 2018 2017 
Condensed Consolidated
Statements of Income location
 2018 2017 
Condensed Consolidated
Statements of Income locations
Cash flow hedges:          
Foreign currency contract (losses) gains $(34) $57
 Product sales $(20) $33
 Product sales
Cross-currency swap contract gains 164
 74
 Interest and other income, net
Cross-currency swap contract (losses) gains (298) 297
 Interest and other income, net
 130
 131
 Income before income taxes (318) 330
 Income before income taxes
 (28) (47) Provision for income taxes 68
 (117) Provision for income taxes
 $102
 $84
 Net income $(250) $213
 Net income
Available-for-sale securities:          
Net realized losses $(134) $(49) Interest and other income, net $(115) $(47) Interest and other income, net
 1
 
 Provision for income taxes 1
 (2) Provision for income taxes
 $(133) $(49) Net income $(114) $(49) 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
12.13. 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, other than level 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)
   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 March 31, 2018, using: Total
Fair value measurement as of June 30, 2018, using: Quoted prices in
active markets for
identical assets
(Level 1)
 
Significant
other observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
 Total
Assets:          
Interest-bearing securities:          
U.S. Treasury securities $5,103
 $
 $
 $5,103
 $3,391
 $
 $
 $3,391
Other government-related debt securities:                
U.S. 
 129
 
 129
 
 128
 
 128
Foreign and other 
 1,674
 
 1,674
 
 1,390
 
 1,390
Corporate debt securities:                
Financial 
 6,053
 
 6,053
 
 3,968
 
 3,968
Industrial 
 5,565
 
 5,565
 
 3,839
 
 3,839
Other 
 896
 
 896
 
 676
 
 676
Residential-mortgage-backed securities 
 1,699
 
 1,699
 
 1,579
 
 1,579
Other mortgage- and asset-backed securities 
 1,267
 
 1,267
 
 652
 
 652
Money market mutual funds 9,234
 
 
 9,234
 7,341
 
 
 7,341
Other short-term interest-bearing securities 
 50
 
 50
 
 5,872
 
 5,872
Equity securities 155
 
 
 155
 200
 
 
 200
Derivatives:                
Foreign currency contracts 
 17
 
 17
 
 106
 
 106
Cross-currency swap contracts 
 433
 
 433
 
 272
 
 272
Total assets $14,492
 $17,783
 $
 $32,275
 $10,932
 $18,482
 $
 $29,414
                
Liabilities:                
Derivatives:                
Foreign currency contracts $
 $259
 $
 $259
 $
 $65
 $
 $65
Cross-currency swap contracts 
 148
 
 148
 
 296
 
 296
Interest rate swap contracts 
 215
 
 215
 
 266
 
 266
Contingent consideration obligations in connection with business combinations 
 
 110
 110
Contingent consideration obligations 
 
 72
 72
Total liabilities $
 $622
 $110
 $732
 $
 $627
 $72
 $699

 
Quoted prices in
active markets for
identical assets
(Level 1)
 
Significant
other observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
   
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 Total
Assets:                
Interest-bearing securities:                
U.S. Treasury securities $8,242
 $
 $
 $8,242
 $8,242
 $
 $
 $8,242
Other government-related debt securities:                
U.S. 
 223
 
 223
 
 223
 
 223
Foreign and other 
 2,422
 
 2,422
 
 2,422
 
 2,422
Corporate debt securities:                
Financial 
 10,072
 
 10,072
 
 10,072
 
 10,072
Industrial 
 9,670
 
 9,670
 
 9,670
 
 9,670
Other 
 1,390
 
 1,390
 
 1,390
 
 1,390
Residential-mortgage-backed securities 
 2,168
 
 2,168
 
 2,168
 
 2,168
Other mortgage- and asset-backed securities 
 2,297
 
 2,297
 
 2,297
 
 2,297
Money market mutual funds 3,245
 
 
 3,245
 3,245
 
 
 3,245
Other short-term interest-bearing securities 
 1,440
 
 1,440
 
 1,440
 
 1,440
Equity securities 149
 
 
 149
 149
 
 
 149
Derivatives:                
Foreign currency contracts 
 6
 
 6
 
 6
 
 6
Cross-currency swap contracts 
 270
 
 270
 
 270
 
 270
Interest rate swap contracts 
 10
 
 10
 
 10
 
 10
Total assets $11,636
 $29,968
 $
 $41,604
 $11,636
 $29,968
 $
 $41,604
                
Liabilities:                
Derivatives:                
Foreign currency contracts $
 $204
 $
 $204
 $
 $204
 $
 $204
Cross-currency swap contracts 
 220
 
 220
 
 220
 
 220
Interest rate swap contracts 
 61
 
 61
 
 61
 
 61
Contingent consideration obligations in connection with business combinations 
 
 69
 69
Contingent consideration obligations 
 
 69
 69
Total liabilities $
 $485
 $69
 $554
 $
 $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 of five years 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+ 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 rating of A- or equivalent 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 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 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- 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 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, where applicable, are at commonly quoted intervals. See Note 13,14, Derivative instruments.
Our cross-currency swap contracts are with counterparties that have minimum credit ratings of 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 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 basis swap spreads. See Note 13,14, Derivative instruments.
Our interest rate swap contracts are with counterparties that have minimum credit ratings of A- or equivalent by S&P, Moody’s or Fitch. We estimate the fair values of these contracts by using an income-based industry 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 13,14, Derivative instruments.
Contingent consideration obligations
As a result of our business acquisitions, we incurred contingent consideration obligations, as discussed below. 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 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
March 31,
Three months ended
June 30,
 Six months ended
June 30,
2018 20172018 2017 2018 2017
Beginning balance$69
 $179
$110
 $184
 $69
 $179
Addition from K-A acquisition45
 

 
 45
 
Net changes in valuations(4) 5
(38) (2) (42) 3
Ending balance$110
 $184
$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.
During the threesix months ended March 31,June 30, 2018 and 2017, 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 March 31,June 30, 2018 and December 31, 2017, the aggregate fair values of our borrowings were $37.6$36.0 billion and $38.6 billion, respectively, and the carrying values were $35.5$34.5 billion and $35.3 billion, respectively.
13.14. 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 March 31,June 30, 2018 and December 31, 2017, we had open foreign currency forward contracts with notional amounts of $5.1$4.8 billion and $4.6 billion, respectively, and open foreign currency option contracts with notional amounts of $60$21 million and $74 million, respectively. 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 effective portions of the unrealized gains and losses on these contracts in AOCI in the Condensed Consolidated Balance Sheets, and we reclassify them to earningsProduct 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 effective portions of the unrealized gains and losses on these contracts are reported in AOCI in the Condensed Consolidated Balance Sheets and reclassified to earningsInterest 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 March 31,June 30, 2018, were as follows (notional amounts in millions):
 Foreign currency U.S. dollars Foreign currency U.S. dollars
Hedged notes Notional amount Interest rate Notional amount Interest rate Notional amounts Interest rates Notional amounts Interest rates
2.125% 2019 euro Notes 675
 2.125% $864
 2.6% 675
 2.125% $864
 2.6%
1.25% 2022 euro Notes 1,250
 1.25% $1,388
 3.2% 1,250
 1.25% $1,388
 3.2%
0.41% 2023 Swiss franc Bonds CHF700
 0.41% $704
 3.4% CHF700
 0.41% $704
 3.4%
2.00% 2026 euro Notes 750
 2.00% $833
 3.9% 750
 2.00% $833
 3.9%
5.50% 2026 pound sterling Notes £475
 5.50% $747
 6.0% £475
 5.50% $747
 6.0%
4.00% 2029 pound sterling Notes £700
 4.00% $1,111
 4.5% £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 earningsInterest 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 threesix months ended March 31,June 30, 2018, and amounts expected to be recognized during the subsequent 12 months are not material.
The effective portions of unrealized gains and losses recognized in AOCI for our derivative instruments designated as cash flow hedges were as follows (in millions):
 Three months ended
March 31,
 Three months ended
June 30,
 Six months ended
June 30,
Derivatives in cash flow hedging relationships 2018 2017 2018 2017 2018 2017
Foreign currency contracts $(89) $(47) $281
 $(203) $192
 $(250)
Cross-currency swap contracts 238
 64
 (315) 217
 (77) 281
Total unrealized gains $149
 $17
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 effective portions of 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
March 31,
   Three months ended
June 30,
 Six months ended
June 30,
Derivatives in cash flow hedging relationships 
Condensed Consolidated
Statements of Income location
 2018 2017 
Condensed Consolidated
Statements of Income locations
 2018 2017 2018 2017
Foreign currency contracts Product sales $(34) $57
 Product sales $(20) $33
 $(54) $90
Cross-currency swap contracts Interest and other income, net 164
 74
 Interest and other income, net (298) 297
 (134) 371
Total realized gains $130
 $131
Total realized (losses) gains $(318) $330
 $(188) $461
No portions of our cash flow hedge contracts are excluded from the assessment of hedge effectiveness. The gains and losses of the ineffective portions of these hedging instruments were not material for the three months ended March 31, 2018 and 2017. As of March 31,June 30, 2018, the amount expected to be reclassified out of AOCI and into earnings during the next 12 months is $202$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 these interest rate swap contracts correspond to the related hedged debt and effectively converted fixed-rate coupons to floating-rate LIBOR-based coupons over the lives of the respective notes. As of March 31,June 30, 2018 and December 31, 2017, we had interest rate swap agreementscontracts with an aggregate notional amount of $9.45 billion that hedge certain 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 derivative instrumentsinterest 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. The following table presents suchIf 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
March 31,
Derivatives in fair value hedging relationships 2018 2017
Net unrealized losses recognized for interest rate swap contracts $(164) $(19)
Net unrealized gains recognized for related hedged debt $164
 $19
  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)
  June 30, 2018 December 31, 2017 June 30, 2018 December 31, 2017
Current portion of long-term debt $2,398
 $500
 $
 $23
Long-term debt $7,905
 $10,516
 $(217) $(11)
____________
(1)
Current portion of long-term debt includes $1.0 billion and $500 million of carrying value with discontinued hedging relationships as of June 30, 2018 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 million and $23 million of hedging adjustments on discontinued hedging relationships as of June 30, 2018 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.
The following table summarizes the amounts of 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
  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)
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 million related to the amortization of the cumulative amount 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.

Derivatives not designated as hedges
To reduce our exposure to foreign currency fluctuations of certain assets and liabilities denominated in foreign currencies, we enter into foreign currency forward contracts that are not designated as hedging transactions. These exposures are hedged on

a month-to-month basis. As of March 31,June 30, 2018 and December 31, 2017, the total notional amounts of these foreign currency forward contracts were $335$268 million and $757 million, respectively. The fair values of these derivatives as of June 30, 2018 and December 31, 2017, were not material.
The location in the Condensed Consolidated Statements of Income and the amounts of gains recognized in earnings for our derivative instruments not designated as hedging instruments were as follows (in millions):
   Three months ended
March 31,
   Three months ended
June 30,
 Six months ended
June 30,
Derivatives not designated as hedging instruments 
Condensed Consolidated
Statements of Income location
 2018 2017 
Condensed Consolidated
Statements of Income location
 2018 2017 2018 2017
Foreign currency contracts Interest and other income, net $7
 $1
 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
March 31, 2018 
Condensed Consolidated
Balance Sheet location
 Fair value Condensed Consolidated
Balance Sheet location
 Fair value
June 30, 2018 
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 $17
 Accrued liabilities/ Other noncurrent liabilities $259
 Other current assets/ Other assets $106
 Accrued liabilities/ Other noncurrent liabilities $65
Cross-currency swap contracts Other current assets/ Other assets 433
 Accrued liabilities/ Other noncurrent liabilities 148
 Other current assets/ Other assets 272
 Accrued liabilities/ Other noncurrent liabilities 296
Interest rate swap contracts Other current assets/ Other assets 
 Accrued liabilities/ Other noncurrent liabilities 215
 Other current assets/ Other assets 
 Accrued liabilities/ Other noncurrent liabilities 266
Total derivatives designated as hedging instruments $450
 $622
 $378
 $627
 Derivative assets Derivative liabilities Derivative assets Derivative liabilities
December 31, 2017 
Condensed Consolidated
Balance Sheet location
 Fair value Condensed Consolidated
Balance Sheet location
 Fair value 
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
 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
 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
 Other current assets/ Other assets 10
 Accrued liabilities/ Other noncurrent liabilities 61
Total derivatives designated as hedging instruments $286
 $485
 $286
 $485
Our derivative contracts that were in liability positions as of March 31,June 30, 2018, contain certain credit-risk-related contingent provisions that would be triggered if: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 within Net cash provided by operating activities in the Condensed Consolidated Statements of Cash Flows.

14.15. 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, 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; and in Note 18, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017.2017; and in Note 14, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ended March 31, 2018.
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—some of which present novel factual allegations and/or unique legal theories.In each of the matters described in this filing, or in Note 18, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017, or in Note 14, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ending March 31, 2018, plaintiffs 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, or in Note 18, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017, or in Note 14, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ending March 31, 2018, 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 Antibody Patent Litigation
U.S. Patent Litigation-Sanofi/Regeneron
TheAs previously disclosed, the U.S. Court of Appeals for the Federal Circuit (the Federal Circuit Court) denied Amgen’s petition for rehearing en banc and issued a March 2, 2018 mandate returning the case to the U.S. District Court for the District of Delaware (the Delaware District Court) for a new trial on two of the defendants’ challenges to the validity of ourAmgen’s patents (lack of written description and enablement of the claimed inventions) and for further consideration of a permanent injunction. Trial has been set to beginOn July 23, 2018, Amgen filed a petition for certiorari with the U.S. Supreme Court seeking review of the U.S. Court of Appeals for the Federal Circuit conclusion that the judgment affirming the validity of Amgen’s patents was based, in part, on February 19, 2019.an erroneous application of the law of written description.
Sensipar® (cinacalcet) Litigation
Sensipar® Abbreviated New Drug Application (ANDA) Patent Litigation
During February 2018, the separate lawsuits filed by Amgen in December 2017 for infringement of our U.S. Patent No. 9,375,405 (the ’405 Patent) against (1) Watson Laboratories, Inc. and Actavis Pharma, Inc., (2) Teva Pharmaceuticals, USA, Inc., and (3) Barr Laboratories, Inc. were each dismissed by agreement between Amgen and the respective defendants.
On March 5, 2018,As previously disclosed, the Delaware District Court commencedheld trial on the infringement claims and defenses in the Amgen Inc. v. Aurobindo Pharma Ltd. et al. consolidated lawsuit. The Delaware District Court has scheduled post-trialPost-trial briefing on this portion of the trial forinfringement claims and defenses was completed on May 2018, but has not yet scheduled trial on defendants’ challenges to the validity of the ’405 Patent.18, 2018.
During March and AprilOn June 12, 2018, the Delaware District Court signed consent judgmentsentered an order dismissing the lawsuit filed by Amgen and each of (1) Cipla Limited and Cipla USA, Inc., (2) Strides Pharma Global Pte. Limited and Strides Pharma, Inc., (3) Aurobindo Pharma Ltd. and Aurobindo Pharma USA, Inc., and (4) Macleodsin December 2017 against Torrent Pharmaceuticals Ltd. on stipulation between the parties and Macleods Pharma USA, Inc. (defendantssubject to the terms of a confidential settlement agreement.

In June 2018, Amgen filed lawsuits in the second consolidated lawsuit, AmgenDelaware District Court and the U.S. District Court for the Middle District of North Carolina, each against Accord Healthcare, Inc. v. Alkem at al.)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 these four consent judgments,Accord’s generic version of Sensipar® effective no earlier than the parties stipulated to an entry of judgment of infringement and validityexpiration of the ’405 Patent and an injunction prohibiting the manufacture, use, sale, offer to sell, importation of, or distribution into the United States of the applicable defendants’ cinacalcet product during the term of the ’405 Patent unless specifically authorized pursuant to the confidential settlement agreement. In March and April 2018, the Delaware District Court also entered orders dismissing the following defendants on stipulations between Amgen and each of (1) Dr. Reddy’s Laboratories, Ltd. and Dr. Reddy’s Laboratories, Inc., (2) Mylan Pharmaceuticals Inc. and Mylan Inc., and (3) Lupin Ltd. and Lupin Pharmaceuticals, Inc. (also defendants in the second consolidated lawsuit) subject to terms of confidential settlement agreements.2026.

Sensipar® Pediatric Exclusivity Litigation
OnAs previously disclosed, on February 17, 2018, the U.S. District Court for the District of Columbia (the D.C. District Court) entered a final judgment for the FDA in the lawsuit filed 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. Food and Drug Administration (FDA). On February 19, 2018, Amgen filed its noticecomposition of appeal of the final judgment. Amgen also filed with the D.C. District Court an emergency motion for injunctive relief pending appeal, which was denied on February 22. On February 23, 2018, Amgen filed an emergency motion for injunction pending appealmatter patent. Oral arguments in the U.S. Court of Appeals for the District of Columbia Circuit (the D.C. Circuit Court). On March 2, 2018, the D.C. Circuit Court denied the motion for an injunction pending appeal. Briefing on Amgen’s appeal has been completed and oral arguments are scheduled forof the final judgment took place on May 17, 2018.
KYPROLIS® (carfilzomib) ANDA Patent Litigation
As previously disclosed, the Delaware District Court consolidated for purposesDuring May, June and July of discovery a number of patent infringement lawsuits filed by our subsidiary Onyx Therapeutics, Inc. (Onyx Therapeutics) into Onyx Therapeutics, Inc. v. Cipla Limited, et al. On February 7, 2018, the Delaware District Court also consolidated for purposes of discovery the lawsuit against Aurobindo Pharma USA, Inc. into Onyx Therapeutics, Inc. v. Cipla Limited, et al. On February 14, 2018, by joint stipulation of the parties, Teva Pharmaceuticals USA Inc. was dismissed from the applicable lawsuit filed in the Delaware District Court in April 2017. On March 20, 2018, the Delaware District Court entered a stipulation between the parties providing Aurobindo a covenant not to sue on our U.S. Patent Nos. 7,232,818 (the ’818 Patent); 7,491,704 (the ’704 Patent); 8,129,346 (the ’346 Patent); and 8,207,297 (the ’297 Patent).
On February 15, 2018, Onyx Therapeutics filed a lawsuit in the Delaware District Court against Breckenridge Pharmaceutical, Inc. (Breckenridge) for patent infringement, and subsequently amended the complaint on March 9, 2018 to assert infringement of U.S. Patent Nos. 7,417,042 (the ’042 Patent); 7,737,112 (the ’112 Patent); 8,207,125 (the ’125 Patent); 8,207,126 (the ’126 Patent); and 8,207,127 (the ’127 Patent). On April 11, 2018, Breckenridge filed a response to the complaint alleging invalidity and, in certain instances, non-infringement of the patents. On April 20, 2018, Onyx Therapeutics filed a lawsuit in the Delaware District Court against Cipla Limited and Cipla USA, Inc. for patent infringement of the ’042, ’112, ’125, ’126 and ’127 Patents. In each new lawsuit, Onyx Therapeutics seeks an order of the Delaware District Court making any FDA approval of the respective defendant’s Abbreviated New Drug Application (ANDA) effective no earlier than the expiration of the applicable patents.
As previously disclosed, Onyx Therapeutics filed lawsuits in the Delaware District Court against Dr. Reddy’s Laboratories, Ltd. and Dr. Reddy’s Laboratories, Inc. (collectively, Dr. Reddy’s), against Apotex Inc. and Apotex Corp. (collectively, Apotex), and against Sagent Pharmaceuticals, Inc. (Sagent) for infringement of a number of our patents. Each of these defendants responded by filing defenses of invalidity and, in certain instances, non-infringement of the patents. During April 2018, the Delaware District Court entered orders on stipulations between Onyx Therapeutics, Inc. (Onyx Therapeutics) and each of Apotex, Dr. Reddy’sFresenius Kabi, USA LLC and Sagent,Fresenius Kabi USA, Inc.; Breckenridge Pharmaceutical, Inc.; Aurobindo Pharma USA, Inc.; Cipla Limited and Cipla USA, Inc. (collectively, Cipla); and Innopharma, Inc., respectively, that each defendant infringes the ’042,U.S. Patent Nos. 7,417,042; 7,737,112 (the ’112 ’125, ’126,Patent); 8,207,125; 8,207,126; and ’127 Patents, and that8,207,127. Onyx Therapeutics willhad previously provided those defendants a covenant that it would not assert patent infringement of the ’818, ’704, ’346,U.S. Patent Nos. 7,232,818; 7,491,704; 8,129,346; and ’297 Patents8,207,297 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 between Onyx Therapeutics and MSN Laboratories Private Limited and MSN Pharmaceuticals, Inc. (collectively, MSN), that MSN infringes the ’112 Patent. In June and July 2018, the Delaware District Court consolidated for purposes of discovery into the existing consolidated case Onyx Therapeutics, Inc. v. Cipla Limited, et al., the lawsuits that were filed against Dr. Reddy’s Laboratories, Ltd. and Dr. Reddy’s Laboratories, Inc. in December 2017; against Apotex Corp. and Apotex Inc. in January 2018; against Breckenridge Pharmaceuticals, Inc. in February 2018; and against Cipla in April 2018, respectively.
NEUPOGEN® (filgrastim)/ Neulasta®(pegfilgrastim) Litigation
Adello NEUPOGEN® Patent Litigation
On March 8, 2018,As previously disclosed, Amgen Inc. and Amgen Manufacturing Ltd., (collectively, Amgen), filed a patent infringement lawsuit in the U.S. District Court for the District of New Jersey (the New Jersey District Court) against Adello 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) for infringement of our U.S. Patent No. 8,273,707. On May 17, 2018, Amgen filed an appeal of the Delaware District Court’s judgment.
Pfizer NEUPOGEN® Patent Litigation
On July 18, 2018, Amgen Inc. and Amgen Manufacturing Ltd. (collectively, Amgen) filed a lawsuit in the Delaware District Court against Pfizer Inc. and Hospira Inc. (collectively, Pfizer). This lawsuit stems from Adello’sPfizer’s submission of an application for FDA licensure of a filgrastim product as biosimilar to Amgen’s NEUPOGEN®. Amgen has asserted infringement of 17 our patents. AmgenU.S. Patent No. 9,643,997 and seeks, an injunctionamong other remedies, injunctive relief to prohibit AdelloPfizer from commercializing its biosimilar filgrastim product inpracticing the United Statespatented invention prior to the expiry of these patents.this patent.
Apotex NEUPOGEN®/Neulasta®ENBREL (etanercept) Litigation
Coherus ENBREL Patent LitigationChallenge
As previously disclosed, on February 17, 2017, the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office granted Apotex’s petitiondenied Coherus’ petitions to institute an inter partes review (IPR) of our U.S. Patent No. 8,952,138 (the ’138 Patent), challenging claims of the ’138 Patent as unpatentable. On February 15, 2018, the PTAB issued a final decision on the IPR of the ’138 Patent holding all but one claim of the ’138 Patent as unpatentable. On March 16, 2018, Apotex filed a request for rehearing on the PTAB’s finding that this one claim is patentable.
Coherus Neulasta® Patent Litigation
On April 18, 2018, the Delaware District Court entered final judgment dismissing Amgen’s complaint for infringement of our patent, having previously granted Coherus BioSciences, Inc.’s (Coherus) motion to dismiss.

Mylan Neulasta® Patent Litigation
On April 6, 2018, Mylan Inc., Mylan Pharmaceuticals Inc., Mylan GmbH and Mylan N.V. filed a motion for judgment on the pleadings of non-infringement of U.S. Patent No. 8,273,707.
ENBREL (etanercept) Litigation
Sandoz ENBREL Patent Litigation
The New Jersey District Court has rescheduled trial to start on September 11, 2018.
Coherus ENBREL Patent Challenge
On March 9, 2018, the PTAB denied Coherus’ petitions to institute IPR trial proceedings on U.S. Patent No.Nos. 8,163,522 and 8,063,182 and U.S. Patent No. 8,163,522, which relate to ENBRELand are exclusively licensed to our subsidiary Immunex Corporation by F. Hoffmann-La Roche Ltd. On April 9, 2018, Coherus filed requests for rehearing on these two denied petitions. On July 13, 2018 the PTAB denied both requests for rehearing.
MVASI (bevacizumab-awwb) Patent Litigation
On April 17, 2018,As previously disclosed, Genentech, Inc. (Genentech) and City of Hope filed lawsuits in the Delaware District Court granted Amgen’s motion to dismiss certain claimsalleging infringement of a number of patents listed by Genentech Inc. and City of Hope that Amgen had not complied within the Biologics Price Competition and Innovation Act. Trial is scheduledAct (BPCIA) exchange

by MVASI, Amgen’s biosimilar version of Avastin® (bevacizumab), and for non-compliance with certain provisions of the BPCIA. On June 5, 2018, Amgen responded to startthe complaint denying patent infringement and any violation of the BPCIA and seeking judgment that the patents-in-suit are invalid, unenforceable and/or not infringed by Amgen. On June 1, 2020.19, 2018, Genentech and City of Hope moved to dismiss all of Amgen’s counterclaims and certain of Amgen’s defenses.

KANJINTI (trastuzumab) Patent Litigation
On June 21, 2018, Genentech and City of Hope filed a lawsuit 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). On July 19, 2018, Genentech, City of Hope and Amgen filed a joint stipulation 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.

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, 2017.2017, and our Quarterly Report on Form 10-Q for the period ended March 31, 2018. 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 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,” 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 Part I, Item 1A. Risk Factors of our Annual Report on Form 10-K for the fiscal year ended December 31, 2017.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 forecast 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 commercial sales—are Neulasta®, ENBREL, Sensipar®/Mimpara®, Prolia® (denosumab), Aranesp®, XGEVA® (denosumab) and EPOGEN®. We also market a number of other products, including KYPROLIS®, Nplate®, Vectibix® (panitumumab), Repatha® (evolocumab), NEUPOGEN®, BLINCYTO® (blinatumomab), ParsabivTM (etelcalcetide), IMLYGIC®and, 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 AnnualQuarterly Report on Form 10-K10-Q for the yearperiod ended DecemberMarch 31, 2017.2018. 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, 2017.2017, and our Quarterly Report on Form 10-Q for the period ended March 31, 2018.
Products/Pipeline
Bone health
Prolia®
In May 2018 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 MarchMay 2018, we announced that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) adopted a positive opinion to includeEC approved a new indication 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. The recommended label recognizes the findings from the Repatha® cardiovascular outcomes study, FOURIER (Further Cardiovascular OUtcomes Research with Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9) Inhibition in Subjects with Elevated Risk).

Neuroscience
AimovigTM
In May 2018, we announced that the FDA approved AimovigTMfor the preventive treatment of migraine in adults. We are in collaboration with Novartis on the development and commercialization of AimovigTM.
Oncology/Hematology
BLINCYTO® 
In MarchJune 2018, we announced that the FDA approved under accelerated approval the supplemental Biologics License ApplicationEC granted a full marketing authorization for BLINCYTO® forbased on the treatment of adults and childrenoverall survival data from the phase 3 TOWER study in adult patients with Philadelphia chromosome-negative relapsed or refractory B-cell precursor acute lymphoblastic leukemia in first or second complete remission with minimal residual disease greater than or equal to 0.1 percent.leukemia.
Neulasta®
In February 2018, we announced that the CHMP of the EMA issued a positive opinion recommending a label variation for Neulasta® to include theNeulasta® Onpro® kit.
Bone Health
XGEVAKYPROLIS® 
In April 2018, we announced that the Committee for Medicinal Products for Human Use of the European Commission approved an expanded indicationMedicines Agency adopted a positive opinion recommending a label variation for XGEVAKYPROLIS® to include the final overall survival data from the phase 3 ASPIRE (CArfilzomib, Lenalidomide, and DexamethaSone versus Lenalidomide and Dexamethasone for the preventiontreatment of skeletal-related eventsPatIents 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. 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 study to the U.S. Prescribing Information for KYPROLIS®.
In June 2018, we presented results from 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.
Biosimilars
KANJINTITM*(formerly ABP 980)
In MarchMay 2018, we announced that the CHMP of the EMA adopted a positive opinionEC granted marketing authorization for the Marketing Authorization Application of KANJINTITM, a biosimilar candidate to Herceptin®(trastuzumab). KANJINTI has been recommended for approval, for the treatment of the same three types of cancer as Herceptin® is approved for in the European Union, including HER2-positive metastatic breast cancer, HER2-positive early breast cancer and HER2-positive metastatic adenocarcinoma of the stomach or gastroesophageal junction.
In May 2018, we announced that we received a Complete Response Letter from the FDA for the Biologics License Application for KANJINTITM is being developed in collaboration with Allergan plc..
Next-generation biomanufacturingABP 710
In April 2018, we announced plans to build a new next-generation biomanufacturing plant on our campus in West Greenwich, Rhode Island. The new plant will employ our next-generation biomanufacturing capabilities and manufacture products for the U.S. and global markets.
In June 2018, we announced results from a phase 3 study evaluating the efficacy and safety of biosimilar candidate ABP 710 compared with REMICADE® (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.
*FDA conditionally approved trade name

Selected financial information
The following is an overview of our results of operations (in millions, except percentages and per-share data):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change2018 2017 Change 2018 2017 Change
Product sales                
U.S.$4,147
 $4,095
 1 %$4,367
 $4,386
  % $8,514
 $8,481
  %
ROW1,196
 1,104
 8 %1,312
 1,188
 10 % 2,508
 2,292
 9 %
Total product sales5,343
 5,199
 3 %5,679
 5,574
 2 % 11,022
 10,773
 2 %
Other revenues211
 265
 (20)%380
 236
 61 % 591
 501
 18 %
Total revenues$5,554
 $5,464
 2 %$6,059
 $5,810
 4 % $11,613
 $11,274
 3 %
Operating expenses$2,828
 $2,873
 (2)%$3,227
 $3,112
 4 % $6,055
 $5,985
 1 %
Operating income$2,726
 $2,591
 5 %$2,832
 $2,698
 5 % $5,558
 $5,289
 5 %
Net income$2,311
 $2,071
 12 %$2,296
 $2,151
 7 % $4,607
 $4,222
 9 %
Diluted EPS$3.25
 $2.79
 16 %$3.48
 $2.91
 20 % $6.73
 $5.71
 18 %
Diluted shares711
 741
 (4)%660
 738
 (11)% 685
 740
 (7)%
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.
Total product sales increased for the three months ended March 31,June 30, 2018, driven primarily by higher unit demand, offset partially by unfavorable changes in inventory. Total product sales increased for the six months ended June 30, 2018, driven primarily by higher unit demand.

The increases in total product sales for the three and six months ended June 30, 2018, have not benefited from net selling price.
Other revenues decreasedincreased for the three months ended March 31,June 30, 2018, driven primarily by lowera milestone payment received from Novartis. Other revenues increased for the six months ended June 30, 2018, driven primarily by higher milestone payments received, offset partially byand higher Ibrance® (palbociclib) royalty income.
Operating expenses decreasedincreased for the three and six months ended March 31,June 30, 2018, driven primarily by lower royalties and lower amortization of intangible assets, offset partially by higher investments in product launches and marketed product support.support, offset partially by decreased Other expenses. All expense categories benefitedcontinued to benefit from our continued transformation and process improvement efforts.efforts, which enabled investment in newer and recently launched products.
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 March 31,June 30, 2018 and 2017.

Results of operations
Product sales
Worldwide product sales were as follows (dollar amounts in millions):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change2018 2017 Change 2018 2017 Change
ENBREL$1,302
 $1,466
 (11)% $2,407
 $2,647
 (9)%
Neulasta®
$1,155
 $1,210
 (5)%1,100
 1,087
 1 % 2,255
 2,297
 (2)%
ENBREL1,105
 1,181
 (6)%
Sensipar®/Mimpara®
497
 421
 18 %
Prolia®
494
 425
 16 %610
 505
 21 % 1,104
 930
 19 %
Aranesp®
454
 511
 (11)%472
 535
 (12)% 926
 1,046
 (11)%
Sensipar®/Mimpara®
420
 427
 (2)% 917
 848
 8 %
XGEVA®
445
 402
 11 %452
 395
 14 % 897
 797
 13 %
EPOGEN®
244
 270
 (10)%250
 292
 (14)% 494
 562
 (12)%
Other products949
 779
 22 %1,073
 867
 24 % 2,022
 1,646
 23 %
Total product sales$5,343
 $5,199
 3 %$5,679
 $5,574
 2 % $11,022
 $10,773
 2 %
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: (i) Overview, Item 1. Business—Marketing, Distribution and Selected Marketed Products,Products; (ii) Item 1A. Risk FactorsFactors; and (iii) Item 7. Results of Operations—Product Sales, as well as in our Quarterly Report on Form 10-Q for the period ended March 31, 2018 in Item 2. Results of Operations—Product Sales.
ENBREL
Total ENBREL 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
ENBREL — U.S.$1,252
 $1,411
 (11)% $2,302
 $2,529
 (9)%
ENBREL — Canada50
 55
 (9)% 105
 118
 (11)%
Total ENBREL$1,302
 $1,466
 (11)% $2,407
 $2,647
 (9)%
The decrease 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):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change  2018 2017 Change   2018 2017 Change
Neulasta®— U.S.
$1,009
 $1,048
 (4)%$948
 $937
 1% $1,957
 $1,985
 (1)%
Neulasta®— ROW
146
 162
 (10)%152
 150
 1% 298
 312
 (4)%
Total Neulasta®
$1,155
 $1,210
 (5)%$1,100
 $1,087
 1% $2,255
 $2,297
 (2)%
The decreaseincrease in global Neulasta® sales for the three months ended March 31,June 30, 2018, 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 decrease in global Neulasta® sales for the six months ended June 30, 2018, was driven primarily by lower unit demand including continued slight declines in the use of myelosuppressive chemotherapy regimens, and from favorable prior-period changes in accounting estimates, offset partially by increasesan increase in net selling price and inventory. As of March 31, 2018, utilization of the Neulastaprice.

® Onpro® kit, as a percentage of Neulasta® sales have been and will continue to be affected by 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 the United States, continues to grow.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 have a material adverse impact on future sales of Neulasta®. Multiple companies have announced applications toA biosimilar version of Neulasta® was approved in the FDA for proposedsecond quarter of 2018 and launched in July 2018. Other biosimilar versions of Neulasta®. A number of these companies have announced receipt of Complete Response Letters from the FDA regarding their applications, and certain ones 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®, see Note 14,15, Contingencies and commitments, to the condensed consolidated financial statements, and Note 18,

Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017.2017, and Note 14, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ended March 31, 2018.
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.
NeulastaProlia®
Total Prolia® sales have been and will continue to be affected by the development of new protocols, tests and/or treatments for cancer and/or new treatment alternatives that have reduced and may continue to reduce the use of myelosuppressive regimens in some patients.
ENBREL
Total ENBREL sales by geographic region were as follows (dollar amounts in millions):
 Three months ended
March 31,
  
 2018 2017 Change  
ENBREL — U.S.$1,050
 $1,118
 (6)%
ENBREL — Canada55
 63
 (13)%
Total ENBREL$1,105
 $1,181
 (6)%
 Three months ended
June 30,
   Six months ended
June 30,
  
 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%
The decreaseincreases in ENBREL global Prolia® sales for the three and six months ended March 31,June 30, 2018, waswere driven primarily by lowerhigher unit demand and, to a lesser extent, a decline inhigher net selling priceprice. Prolia®, which has a six-month dosing interval, has exhibited a historical sales pattern, with the first and favorable prior-period changesthird quarters of a year representing lower sales than the second and fourth quarters of a year.
Aranesp®
Total Aranesp® sales by geographic region were as follows (dollar amounts in accounting estimates, offset partiallymillions):
 Three months ended
June 30,
   Six months ended
June 30,
  
 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)%
The decreases in global Aranesp® sales for the three and six months ended June 30, 2018, were driven primarily by an increase in inventory.
For 2018, we expect the trendimpact of lowercompetition on unit demand and, to continue. In addition, we expect 2018a lesser extent, lower net selling price to decline slightly compared to 2017.price.
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®/Mimpara® 
Total Sensipar®/Mimpara® sales by geographic region were as follows (dollar amounts in millions):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change2018 2017 Change 2018 2017 Change
Sensipar® — U.S.
$409
 $337
 21%$330
 $342
 (4)% $739
 $679
 9%
Sensipar®/Mimpara® — ROW
88
 84
 5%90
 85
 6 % 178
 169
 5%
Total Sensipar®/Mimpara®
$497
 $421
 18%$420
 $427
 (2)% $917
 $848
 8%

The increasedecrease in global Sensipar®/Mimpara® sales for the three months ended March 31,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, 2018, was driven primarily by higher unit demand.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 2018 in order to ensure patient treatment was not interrupted.
Our U.S. composition of matter patent related to Sensipar®, 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 companies seeking to market generic versions of Sensipar® and litigation regarding our request for pediatric exclusivity for Sensipar®. See Note 14,15, Contingencies and commitments, to the condensed consolidated financial statements, and Note 18, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017.

Prolia®
Total Prolia2017, and Note 14, Contingencies and commitments, to the condensed consolidated financial statements in our Quarterly Report on Form 10-Q for the period ended March 31, 2018. The 2018 outlook for Sensipar® sales by geographic region wereis uncertain as follows (dollar amountsgeneric competitors may enter the market at risk in millions):
 Three months ended
March 31,
  
 2018 2017 Change
Prolia® — U.S.
$320
 $279
 15%
Prolia® — ROW
174
 146
 19%
Total Prolia®
$494
 $425
 16%
The increase in global Prolia® sales for the three months ended March 31, 2018, was driven primarily by higher unit 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 quartershalf of a year.
Aranesp®
Total Aranesp® sales by geographic region were as follows (dollar amounts in millions):
 Three months ended
March 31,
  
 2018 2017 Change  
Aranesp® — U.S.
$225
 $278
 (19)%
Aranesp® — ROW
229
 233
 (2)%
Total Aranesp®
$454
 $511
 (11)%
The decrease in global Aranesp® sales for the three months ended March 31, 2018, was driven primarily by the impact of competition on unit demand.
For 2018, we expect Aranesp® to face increasing competition from long-acting products. We could also face competition from biosimilar versions of EPOGEN® in 2018 if they launch in the United States.2018.
XGEVA®  
Total XGEVA® sales by geographic region were as follows (dollar amounts in millions):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change2018 2017 Change 2018 2017 Change
XGEVA® — U.S.
$332
 $298
 11%$339
 $292
 16% $671
 $590
 14%
XGEVA® — ROW
113
 104
 9%113
 103
 10% 226
 207
 9%
Total XGEVA®
$445
 $402
 11%$452
 $395
 14% $897
 $797
 13%
The increaseincreases in global XGEVA® sales for the three and six months ended March 31,June 30, 2018, waswere driven primarily by higher unit demand.demand and, to a lesser extent, higher net selling price.
EPOGEN® 
Total EPOGEN® sales were as follows (dollar amounts in millions):
 Three months ended
March 31,
  
 2018 2017 Change
EPOGEN® — U.S.
$244
 $270
 (10)%
 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 decreasedecreases in EPOGEN® sales for the three and six months ended March 31,June 30, 2018, waswere driven primarily by a decrease in net selling price due to contractual terms negotiated with DaVita Inc., and, to a lesser extent, lower unit demand.

Our final material U.S. patent for EPOGEN® expired in May 2015. We face 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 certain ones may launch. Other biosimilar versions of EPOGEN® may also receive approval in 2018.approval. For a discussion of ongoing patent litigation with one of these companies, see Note 14,15, Contingencies and commitments, to the condensed consolidated financial statements and Note 18, Contingencies and commitments, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017.

Other products
Other product sales by geographic region were as follows (dollar amounts in millions):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change2018 2017 Change 2018 2017 Change
KYPROLIS®— U.S.
$137
 $137
  %$151
 $140
 8 % $288
 $277
 4 %
KYPROLIS®— ROW
85
 53
 60 %112
 71
 58 % 197
 124
 59 %
Nplate®— U.S.
112
 97
 15 %107
 99
 8 % 219
 196
 12 %
Nplate®— ROW
67
 57
 18 %72
 65
 11 % 139
 122
 14 %
Vectibix®— U.S.
75
 61
 23 %68
 62
 10 % 143
 123
 16 %
Vectibix®— ROW
94
 86
 9 %105
 106
 (1)% 199
 192
 4 %
Repatha®— U.S.
84
 33
 *
98
 60
 63 % 182
 93
 96 %
Repatha®— ROW
39
 16
 *
50
 23
 *
 89
 39
 *
NEUPOGEN®— U.S.
65
 101
 (36)%63
 90
 (30)% 128
 191
 (33)%
NEUPOGEN®— ROW
38
 47
 (19)%39
 47
 (17)% 77
 94
 (18)%
ParsabivTM — U.S.
66
 
 *
 102
 
 *
ParsabivTM — ROW
7
 
 *
 12
 
 *
BLINCYTO® — U.S.
30
 23
 30 %34
 28
 21 % 64
 51
 25 %
BLINCYTO® — ROW
19
 11
 73 %26
 15
 73 % 45
 26
 73 %
ParsabivTM — U.S.
36
 
 *
ParsabivTM — ROW
5
 
 *
Other — U.S.19
 15
 27 %24
 19
 26 % 43
 34
 26 %
Other — ROW44
 42
 5 %51
 42
 21 % 95
 84
 13 %
Total other products$949
 $779
 22 %$1,073
 $867
 24 % $2,022
 $1,646
 23 %
Total U.S. — other products$558
 $467
 19 %$611
 $498
 23 % $1,169
 $965
 21 %
Total ROW — other products391
 312
 25 %462
 369
 25 % 853
 681
 25 %
Total other products$949
 $779
 22 %$1,073
 $867
 24 % $2,022
 $1,646
 23 %
* Change in excess of 100%.


Operating expenses
Operating expenses were as follows (dollar amounts in millions):
Three months ended
March 31,
  Three months ended
June 30,
   Six months ended
June 30,
  
2018 2017 Change  2018 2017 Change   2018 2017 Change
Operating expenses:                
Cost of sales$944
 $996
 (5)%$1,024
 $1,024
 % $1,968
 $2,020
 (3)%
% of product sales17.7% 19.2%  18.0% 18.4%   17.9% 18.8%  
% of total revenues17.0% 18.2%  16.9% 17.6%   16.9% 17.9%  
Research and development$760
 $769
 (1)%$869
 $873
 % $1,629
 $1,642
 (1)%
% of product sales14.2% 14.8%  15.3% 15.7%   14.8% 15.2%  
% of total revenues13.7% 14.1%  14.3% 15.0%   14.0% 14.6%  
Selling, general and administrative$1,127
 $1,064
 6 %$1,353
 $1,209
 12% $2,480
 $2,273
 9 %
% of product sales21.1% 20.5%  23.8% 21.7%   22.5% 21.1%  
% of total revenues20.3% 19.5%  22.3% 20.8%   21.4% 20.2%  
Other$(3) $44
 *
$(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 continue to estimate will result in pretax accounting charges in the range of $825$800 million to $900 million. As of March 31,June 30, 2018, restructuring costs incurred to date were $801$794 million. The charges that were recorded related to the restructuring during the three and six months ended March 31,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.
Cost of sales
Cost of sales decreased to 17.0%16.9% of total revenues for the three and six months ended March 31,June 30, 2018, driven primarily by lower royaltiesroyalty costs and lowera decrease in acquisition-related amortization of intangible assets, offset partially by higher manufacturing costs.costs and unfavorable product mix.
Research and development
R&D expenses including Discovery Research and Translational Sciences, later-stage clinical programs and marketed products, were flat for the three months ended March 31, 2018.June 30, 2018, were relatively flat as a decrease 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.
Selling, general and administrative
The increaseincreases in Selling, general and administrative expenses for the three and six months ended March 31,June 30, 2018, waswere driven primarily by investments in product launches and marketed product support.
Other
Other operating expenses for the three and six months ended March 31,June 30, 2018 and 2017, included certain net charges relateddecreased due primarily to our restructuring plan and the change in fair values of contingent consideration relatingliabilities related to prior-year business combinations.combinations and lower net charges related to our restructuring plan, offset partially by expenses related to legal proceedings.


Nonoperating expense/income and income taxes
Nonoperating expense/income and income taxes were as follows (dollar amounts in millions):
Three months ended
March 31,
Three months ended
June 30,
 Six months ended
June 30,
2018 20172018 2017 2018 2017
Interest expense, net$338
 $326
$347
 $321
 $685
 $647
Interest and other income, net$231
 $195
$162
 $165
 $393
 $360
Provision for income taxes$308
 $389
$351
 $391
 $659
 $780
Effective tax rate11.8% 15.8%13.3% 15.4% 12.5% 15.6%
Interest expense, net
The increase in Interest expense, net, for the three and six months ended March 31,June 30, 2018, was due primarily to the impact of increasingrising interest rates on variable-rate debt and a higher average amounton which we pay variable rates of debt outstanding.interest.
Interest and other income, net
The increaseslight decrease in Interest and other income, net for the three months ended March 31,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, was due primarily to a net gain recognized in connection with our acquisition of K-A (see Note 3, Business combinations, to the condensed consolidated financial statements) and higher interest income earned as a result of higher average investment balances,gains on our equity investments, offset partially by net investment losses recognized in liquidatingas a result of the liquidation of a portion of our portfolio, in part to fund a tender offer to repurchase our common stock.portfolio.
Income taxes
The decrease in our effective tax rate for the three and six months ended March 31,June 30, 2018, was due primarily to the impacts of U.S. corporate tax reform, including the reduction in the U.S. statutory tax rate, offset partially by U.S.a prior year benefit associated with the effective settlement of certain state and federal tax on foreign earnings.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 the 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 the 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,things; therefore, our estimates may change during 2018. However, we expect to complete our analysis within the measurement period.
As previously disclosed, we received an 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. On November 29, 2017, we received a modified RAR that revised the IRS calculations but continued to propose substantial adjustments. We disagree with the proposed adjustments and are pursuing resolution through the IRS administrative appeals process, which we believe will likely not be concluded within the next 12 months. Final resolution of the IRS audit could have a material impact on our results of operations and cash flows if not resolved favorably, however, we believe our income tax reserves are appropriately provided for all open tax years. See Note 5, 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):
March 31,
2018
 December 31,
2017
June 30,
2018
 December 31,
2017
Cash, cash equivalents and marketable securities$32,172
 $41,678
$29,395
 $41,678
Total assets$71,164
 $79,954
$67,684
 $79,954
Current portion of long-term debt$2,183
 $1,152
$4,288
 $1,152
Long-term debt$33,358
 $34,190
$30,209
 $34,190
Stockholders’ equity$15,620
 $25,241
$14,909
 $25,241
Cash, cash equivalents and marketable securities
We have global access to our $32$29 billion balance of cash, cash equivalents and marketable securities, as we no longer reinvest our undistributed foreign earnings indefinitely outside the United States. As a result of the 2017 Tax Act, we owerecorded a repatriation tax liability on undistributed earnings generated from operations in foreign tax jurisdictions estimated at $7.3 billion, that will be paid over eight years. The first annual payment was made in April 2018.
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, 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 return capital to stockholders through the payment of cash dividends and stock repurchases 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. In addition, the timing and amount of stock repurchases may also be affected by the 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 2018 and December 2017, the Board of Directors declared a quarterly cash dividenddividends of $1.32 per share of common stock, which will bewere paid on JuneMarch 8, 2018. In December 2017, the Board of Directors declared a quarterly cash dividend of $1.32 per share of common stock, which was paid on March2018 and June 8, 2018.
We have also returned capital to stockholders through our stock repurchase program. During the threesix months ended March 31,June 30, 2018, we repurchased $10.8$14.0 billion of our stock and paid $10.7$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. As of March 31, 2018, $3.6 billion remained available under the Board of Directors-approved stock repurchase program. In April 2018, our Board of Directors increased the amount authorized under our stock repurchase program by an additional $5.0 billion. As of June 30, 2018, $5.4 billion remained available under the Board of Directors-approved 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 March 31,June 30, 2018 and December 31, 2017. 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, 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: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 March 31,June 30, 2018.
Cash flows
Our summarized cash flow activity was as follows (in millions):
Three months ended
March 31,
Six months ended
June 30,
2018 20172018 2017
Net cash provided by operating activities$2,727
 $2,385
$4,829
 $4,711
Net cash provided by (used in) investing activities$14,906
 $(157)$17,844
 $(1,970)
Net cash used in financing activities$(11,692) $(2,111)$(16,342) $(3,353)

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 threesix months ended March 31,June 30, 2018, increased compared with the same period in the prior year due primarily to higher net income, and higher accruals for sales incentives and allowances, offset partially by higher cash taxes resulting from the timingfirst installment payment of receiptsrepatriation tax arising from customers andthe 2017 Tax Act, net of reduced payments to vendors.on our ongoing income tax liability.
Investing
Cash provided by investing activities during the threesix months ended March 31,June 30, 2018, was due primarily to net activity related to marketable securities of $14.9 billion.$18.0 billion, offset partially by capital expenditures of $342 million. Cash used in investing activities during the threesix months ended March 31,June 30, 2017, was due primarily to capital expenditures of $168 million, offset partially by net activity related to marketable securities of $63$1.5 billion and capital expenditures of $353 million. Capital expenditures during the threesix months ended March 31,June 30, 2018 and 2017, were associated primarily with manufacturing-capacity expansions in various locations, as well as other site developments. We currently estimate 2018 spending on capital projects and equipment to be approximately $750 million.
Financing
Cash used in financing activities during the threesix months ended March 31,June 30, 2018, was due primarily to repurchases of our common stock of $10.7$13.9 billion, and payment of dividends of $951$1.8 billion and repayment of debt of $500 million. Cash used in financing activities during the threesix months ended March 31,June 30, 2017, was due primarily to the payment of dividends of $847 million, a debt repayment of $605 million and$1.7 billion, repurchases of our common stock of $586$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. See Note 11,12, 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. 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. There were no material changes to our critical accounting policies during the threesix months ended March 31,June 30, 2018.
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, and is incorporated herein by reference. There have been no material changes during the threesix months ended March 31,June 30, 2018, 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.

Item 4.CONTROLS AND PROCEDURES
We maintain “disclosure controls and procedures,” as such term is defined under 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 March 31,June 30, 2018.
Management determined that, as of March 31,June 30, 2018, 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, 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 period ended March 31, 2018, for discussions that are limited to certain recent developments concerning our legal proceedings. Those discussions should be read in conjunction with Note 18, 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.
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, 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.
ThereBelow, we are noproviding, in supplemental form, the material updates from thechanges to our risk factors previouslythat occurred during the past quarter. Our risk factors disclosed in Part 1,I, Item 1A, of our Annual Report, on Form 10-K for the fiscal year ended December 31, 2017.2017, 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.
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, Part I, Item 1. Business—Reimbursement. Changes to U.S. federal reimbursement policy may come through legislative and/or administrative actions. For example, in February 2018, the U.S. Congress passed legislation that requires pharmaceutical manufacturers to pay greater discounts for patients in the Medicare Part D coverage gap beginning in 2019, which may reduce our net product sales relating to such patients. In May 2018, U.S. President Donald Trump and his 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. The blueprint included a number of policy ideas with the potential to significantly impact our industry, whether individually or collectively, including proposals to move reimbursement for all Medicare Part B drugs into Medicare Part D and to remove the safe-harbor protection under the federal anti-kickback statute for drug rebates paid to payers. Prior to the release of 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 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 including the Centers for Medicare & Medicaid Services (CMS), the federal agency responsible for administering Medicare, Medicaid and the Health Insurance Marketplaces. CMS has substantial power to implement policy changes or demonstration projects that can quickly and significantly affect how our products are covered and reimbursed. CMS has already begun implementing certain elements described in the administration’s drug pricing blueprint, including warning Medicare Part D plan insurers that they could face compliance actions if they implement contractual “gag clauses” to prevent pharmacies from alerting patients to lower priced cash payment options. CMS has also undertaken other projects to test care models, such as the CMS Oncology Care Model that 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 impacted utilization of certain of our oncology products by participating physician practices and may continue to do so in the future. 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 we are unable to predict if these policy, legislative or regulatory changes may ultimately be enacted, to the extent that these or other federal government initiatives decrease or modify the coverage or reimbursement available for our products, 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 pharmaceutical products or reduce the use of our U.S. products, such actions could have a material adverse effect on our business and results of operations.
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, 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 pharmaceutical products. For example, in October 2017, California enacted a drug pricing transparency bill that requires pharmaceutical manufacturers to notify health insurers and government health plans at least 60 days before scheduled prescription drug price increases that exceed certain thresholds. These existing and proposed state pricing laws have added complexity to the pricing of drugs and may already be impacting industry pricing decisions. Ultimately, as with U.S. federal government actions, existing or future state government actions may also have a material adverse effect on our business and results of operations.
Payers, including healthcare insurers, Pharmacy Benefit Managers (PBMs) and group purchasing organizations, increasingly seek ways to reduce their and their respective members’ costs. Many payers continue to adopt benefit plan changes that shift a greater portion of prescription costs to patients. Such measures include more limited benefit plan designs, high deductible plans, higher patient co-pay or co-insurance obligations and limitations on patients’ use of 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 by requiring prior authorizations or step therapy, and may choose to exclude certain indications for which our products are approved or even choose to exclude coverage entirely. For example, the burdensome administrative process required for physicians to demonstrate or document that the patients for whom Repatha® has been prescribed meet the payers’ utilization management criteria has limited patient access to Repatha® treatment. Even with increased access, patient out-of-pocket expense may limit patient use. For example, other patients with coverage for Repatha® have abandoned their prescriptions rather than pay their co-pay payment. In an effort to reduce access burdens, we have taken a number of actions to reduce the net price of Repatha® through offering greater discounts and rebates to payers. Despite the recent net price reductions, payers may continue to impose access burdens, change formulary coverage for Repatha®, seek further discounts or rebates or take other actions that could reduce 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 more than 70% of prescription claims and the top three health insurance companies’ coverage is approaching half of 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. Consolidation among insurers, PBMs and other payers, including through integrated delivery systems and/or with specialty 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, fees for other services and rebates. Further consolidation (including as a result of a number of merger transactions that have been announced but not yet completed) would increase this leverage. Ultimately, further discounts, rebates, coverage or plan changes, restrictions or exclusions as described above could have a material adverse effect on sales of our affected 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, Part I, Item 1. Business—Reimbursement. For example, international reference pricing (IRP) is widely used by a large number of countries 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 deterioration in the coverage and reimbursement available for our products or in the timeliness or certainty of payment by payers to physicians and other providers could negatively impact the ability or willingness of healthcare providers to prescribe our products for their patients or could otherwise negatively affect the use of our products or the prices we receive for them. Such changes could have a material adverse effect on our product sales, 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. In the United States, pricing data that we submit to the U.S. government impacts the payment rates for providers, rebates we pay, and discounts we are required to provide under Medicare, Medicaid and other government drug programs. Government price reporting regulations are complex and may require a manufacturer to update certain previously submitted data. Our price reporting data calculations are reviewed monthly and quarterly, and based on such reviews we have on occasion restated previously reported pricing data to reflect changes in calculation methodology, reasonable assumptions and/or underlying 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.
Item 2.UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
During the three months ended March 31,June 30, 2018, 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
 
Total number
of shares purchased
as part of publicly announced program
 
Maximum dollar
value that may
yet be purchased
under the program(1)
January 1 - 311,242,000
 $185.75
 1,242,000
 $14,139,104,402
February 1 - 28542,890
 $188.11
 542,890
 $14,036,979,617
March 1 - 3154,616,133
 $191.42
 54,616,133
 $3,582,419,801
 56,401,023
 $191.26
 56,401,023
  
 
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
May 1 - 317,365,100
 $173.00
 7,365,100
 $6,039,390,454
June 1 - 303,502,600
 $184.52
 3,502,600
 $5,393,102,210
 18,236,300
 $174.78
 18,236,300
  
(1)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. As of March 31, 2018, $3.6 billion remained available under our stock repurchase program. 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 April 2018, 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.

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:April 24, 2018By:
/S/    DAVID W. MELINE
David W. Meline
Executive Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)


AMGEN INC.

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 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.)
   
4.25 
   
4.26 
   
4.27 
   
4.28 
   
4.29 
   
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 12, 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.)
   

Exhibit No. Description
10.5+ 
Form of Restricted Stock Unit Agreement for the Amgen Inc. Amended and Restated 2009 Equity Incentive Plan. (As Amended on December 12, 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+ 
Amgen Inc. 2009 Performance Award Program. (As Amended on December 31, 2017.) (Filed as an exhibit to Form 10-K for the year ended December 31, 2017 on February 13, 2017 and incorporated herein by reference.)
   
10.7+ 
Form of Performance Unit Agreement for the Amgen Inc. 2009 Performance Award Program. (As Amended on December 12, 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+ 
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 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 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, 2012. (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 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 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 as an exhibit to Form 10-K for the year ended December 31, 2016 on February 14, 2017 and incorporated herein by reference.)
   
10.23 
   

Exhibit No. Description
10.24*10.24 
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 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 
   
10.27 
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.)
   
10.28 
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.)
   
10.29 
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.)
   
10.30 
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.)
   
10.31 
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.)
   
10.32 
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.)
   
10.33 
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.)
   
10.34 
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.)
   
10.35 
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.)
   
10.36 
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.)
   
10.37 
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.)
   

10.38*
Exhibit No.Description
10.38 
   
31* 

Exhibit No.Description
   
32** 
   
101.INS* XBRL Instance 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, 2018By:
/S/    DAVID W. MELINE
David W. Meline
Executive Vice President and Chief Financial Officer
(Principal Financial and Accounting Officer)


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