EX-4.3





 Exhibit 4.3 

OFFICER’S CERTIFICATE 

OF 
 AMGEN INC. 

Dated as of May 6, 2020 
 The undersigned
officer of the Company certifies, pursuant to resolutions duly adopted by the Board of Directors at a meeting duly held on April 29, 2020 (the “Resolutions”), and in accordance with Sections 2.1, 2.2 and 2.3 of the Indenture,
dated as of May 22, 2014 (the “Indenture”; capitalized terms used herein and not otherwise defined shall have the meanings given to them in the Indenture), between Amgen Inc., a Delaware corporation (the
“Company”), and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), the following matters related to the issuance of the Company’s 2.300% Senior Notes due 2031 (the
“Notes”). 
 1.    Attached hereto as Annex A is a true and correct copy of a specimen note (the
“Form of Note”) representing the Notes. The Form of Note sets forth certain of the terms required to be set forth in this Certificate pursuant to Section 2.2 of the Indenture, and said terms are incorporated herein by
reference. The Notes are a separate series of Securities under the Indenture. 
 2.    The title of the Notes shall be
the “2.300% Senior Notes due 2031.” 
 3.    The Notes shall be issued at the initial offering price of
99.642% of the principal amount. 
 4.    The Company will initially issue $1,250,000,000 aggregate principal amount of
Notes (except for Notes authenticated and delivered upon registration of transfer of, in exchange for, or in lieu of, other Notes pursuant to Sections 2.7, 2.8, 2.11, 3.6 or 9.6 of the Indenture). The Company may issue additional Notes from time to
time after the date hereof, and such Notes will be treated as part of the Notes for all purposes under the Indenture. 

5.    The Notes shall be issued as Global Securities only and will be exchangeable for certificated notes
(“Certificated Notes”) only if: 
  

	 	(a)	 DTC (x) notifies the Company that it is unwilling or unable to continue as depository for the Global
Securities or (y) at any time has ceased to be a clearing agency registered under the Exchange Act at a time when it is required to be registered and, in either case, the Company fails to appoint a successor depository registered as a clearing
agency under the Exchange Act within 90 days of notification to the Company or the Company becoming aware of DTC’s ceasing to be so registered, as the case may be; 



 

	 	(b)	 the Company, at its option, notifies the Trustee in writing to the effect that the Company elects to cause the
issuance of the Certificated Notes; or 


  

	 	(c)	 there has occurred and is continuing an Event of Default with respect to the Notes. 














 Certificated Notes delivered in exchange for any Global Security or beneficial interests in
Global Securities will be registered in the names, and issued in any approved denominations, requested by or on behalf of the depository (in accordance with its customary procedures). 

6.    The Notes shall be denominated in Dollars and payments of principal and interest shall be made in Dollars. 

7.    In addition to the provisions set forth in Article IV of the Indenture, the following additional provisions shall
apply to the Notes and shall be incorporated into the Indenture with respect to the Notes: 
 Section 4.5 Change of Control
Offer 
 (a)    If a Change of Control Triggering Event occurs, unless the Company has exercised its option to
redeem the Notes as described in Section 5 of the Security, the Company will be required to make an offer (the “Change of Control Offer”) to each Holder to repurchase all or any part (equal to $2,000 or an integral multiple of
$1,000 in excess thereof) of that Holder’s Notes on the terms set forth in such Security. In the Change of Control Offer, the Company shall be required to offer payment in cash equal to 101% of the aggregate principal amount of Notes
repurchased, plus accrued and unpaid interest, if any, on the Notes repurchased to the date of repurchase (the “Change of Control Payment”). Within 30 days following any Change of Control Triggering Event, a notice will be provided
to Holders describing the transaction that constitutes the Change of Control Triggering Event and offering to repurchase the Notes on the date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the
date such notice is provided (the “Change of Control Payment Date”); provided, however, that in no event will the Change of Control Payment Date occur prior to the date 90 days following the First Issue Date. 

(b)    On the Change of Control Payment Date, the Company shall, to the extent lawful: 

 

	 	(i)	 accept for payment all Notes or portions of Notes properly tendered pursuant to the Change of Control Offer;



  

	 	(ii)	 deposit with the Paying Agent an amount equal to the Change of Control Payment in respect of all Notes or
portions of Notes properly tendered; and 


  

	 	(iii)	 deliver or cause to be delivered to the Trustee the Notes properly accepted together with an Officer’s
Certificate stating the aggregate principal amount of Notes or portions of Notes being repurchased. 



(c)    Notwithstanding the foregoing, the Company shall not repurchase any Notes if there has occurred and is continuing
on the Change of Control Payment Date an Event of Default under the Indenture, other than a Default in the payment of the Change of Control Payment upon a Change of Control Triggering Event. 

(d)    The Company will comply with the requirements of Rule 14e-1 under the
Exchange Act and any other securities laws and regulations thereunder to the extent those laws 

  
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and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any such securities laws or
regulations conflict with the Change of Control Offer provisions of the Notes, the Company will comply with those securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Offer provisions of
the Notes by virtue of any such conflict. 
 (e)    If holders of not less than 90% in aggregate principal amount of the
outstanding Notes validly tender and do not withdraw such Notes in a Change Of Control Offer and the Company, or any third party making such an offer in lieu of the Company, purchases all of the Notes validly tendered and not withdrawn by such
holders, the Company or such third party will have the right, upon not less than 10 days nor more than 60 days’ prior notice, provided that such notice is given not more than 30 days following such repurchase pursuant to the Change Of Control
Offer described above, to redeem all Notes that remain outstanding following such purchase on a date specified in such notice (the “Second Change Of Control Payment Date”) and at a price in cash equal to 101% of the aggregate
principal amount of Notes repurchased plus any accrued and unpaid interest on the Notes repurchased to, but not including, the Second Change Of Control Payment Date. 

(f)    For the purposes of this Section 4.5 only, the following definitions shall apply: 

“Beneficial Owner” shall be determined in accordance with Rules 13d-3 and 13d-5 under the Exchange Act or any successor provisions, except that a Person will be deemed to have beneficial ownership of all shares that Person has the right to acquire irrespective of whether that right is
exercisable immediately or only after the passage of time. 
 “Change of Control” means the occurrence of any of the
following: (1) the consummation of any transaction (including, without limitation, any merger or consolidation) the result of which is that any Person or Group (other than the Company or one of its Subsidiaries) becomes the Beneficial Owner,
directly or indirectly, of more than 50% of the Company’s Voting Stock or other Voting Stock into which the Company’s Voting Stock is reclassified, consolidated, exchanged or changed, measured by voting power rather than number of shares;
provided, however, that a Person shall not be deemed Beneficial Owner of, or to own beneficially, (A) any securities tendered pursuant to a tender or exchange offer made by or on behalf of such Person or any of such Person’s
affiliates until such tendered securities are accepted for purchase or exchange thereunder, or (B) any securities if such beneficial ownership (i) arises solely as a result of a revocable proxy delivered in response to a proxy or consent
solicitation made pursuant to the applicable rules and regulations under the Exchange Act, and (ii) is not also then reportable on Schedule 13D (or any successor schedule) under the Exchange Act; (2) the direct or indirect sale, transfer,
conveyance or other disposition (other than by way of merger or consolidation), in one or more series of related transactions, of all or substantially all of the Company’s assets and the assets of the Company’s Subsidiaries, taken as a
whole, to one or more Persons or Groups (other than the Company or one of its Subsidiaries); provided that none of the circumstances in this clause (2) will be a Change of Control if the Persons that beneficially own the Company’s
Voting Stock immediately prior to the transaction own, directly or indirectly, shares with a majority of the total voting power of all outstanding voting securities of the surviving or transferee Person that are entitled to vote generally in the
election of that Person’s board of directors, managers or trustees 

  
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immediately after the transaction; or (3) the adoption of a plan relating to the Company’s liquidation or dissolution. Notwithstanding the foregoing, a transaction will not be deemed to
involve a Change of Control under clause (1) above if (i) the Company becomes a direct or indirect wholly-owned subsidiary of a holding company and (ii) (A) the direct or indirect holders of the Voting Stock of such holding company
immediately following that transaction are substantially the same as the holders of the Company’s Voting Stock immediately prior to that transaction or (B) immediately following that transaction no Person (other than a holding company
satisfying the requirements of this sentence) is the Beneficial Owner, directly or indirectly, of more than 50% of the Voting Stock of such holding company. 

“Change of Control Triggering Event” means the occurrence of both a Change of Control and a Rating Event. 

“Group” has the meaning given by Section 13(d) and 14(d) of the Exchange Act or any successor provisions and includes
any group acting for the purpose of acquiring, holding or disposing of securities within the meaning of Rule 13d-5(b)(1) under the Exchange Act or any successor provision. 

“Investment Grade Rating” means a rating equal to or higher than Baa3 (or the equivalent) by Moody’s and BBB- (or the equivalent) by S&P, and the equivalent investment grade credit rating from any additional Rating Agency or Rating Agencies selected by the Company. 

“Moody’s” means Moody’s Investors Service, Inc., and its successors. 

“Person” has the meaning given by Section 13(d) and 14(d) of the Exchange Act or any successor provisions. 

“Rating Agencies” means (1) each of Moody’s and S&P; and (2) if either Moody’s or S&P ceases to
rate the Notes or fails to make a rating of the Notes publicly available for reasons outside of the Company’s control, a “nationally recognized statistical rating organization” within the meaning of Section 3(a)(62) of the
Exchange Act selected by the Company (as certified by a resolution of the Board of Directors) as a replacement agency for Moody’s or S&P, or both of them, as the case may be. 

“Rating Event” means the rating on the Notes is lowered by both of the Rating Agencies and the Notes are rated below an
Investment Grade Rating by both of the Rating Agencies on any day during the period commencing 60 days prior to the first public notice of the occurrence of a Change of Control or the Company’s intention to effect a Change of Control and ending
60 days following consummation of such Change of Control (which period will be extended so long as the rating of the Notes is under publicly announced consideration for a possible downgrade by any of the Rating Agencies). 

“S&P” means Standard & Poor’s Rating Services, a division of The McGraw-Hill Companies, Inc., and its
successors. 
 “Voting Stock” as applied to stock of any Person, means shares, interests, participations or other
equivalents in the equity interest (however designated) in such Person having ordinary voting power for the election of a majority of the directors (or the equivalent) of such Person, other than shares, interests, participations or other equivalents
having such power only by reason of the occurrence of a contingency. 

  
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 Section 4.6 Limitation on Liens. 

(a)    The Company shall not, nor shall it permit any of its Subsidiaries to, create or incur any Lien on any of their
respective Properties, whether now owned or hereafter acquired, or upon any income or profits therefrom, in order to secure any Indebtedness of the Company, without effectively providing that the Notes shall be equally and ratably secured until such
time as such Indebtedness is no longer secured by such Lien, except: 
 (1)    Liens existing as of the First Issue
Date; 
 (2)    Liens granted after the First Issue Date on any of the Company or any of its Subsidiaries’
Properties securing Indebtedness of the Company created in favor of the Holders of the Notes; 
 (3)    Liens securing
Indebtedness of the Company which are incurred to extend, renew or refinance Indebtedness which is secured by Liens permitted to be incurred under the Indenture; provided that those Liens do not extend to or cover any of the Company or any of
its Subsidiaries’ Property other than the Property securing the Indebtedness being refinanced and that the principal amount of such Indebtedness does not exceed the principal amount of the Indebtedness being refinanced; 

(4)    Liens created in substitution of or as replacements for any Liens permitted by the preceding clauses
(1) through (3) directly above, provided that, based on a good faith determination of an Officer of the Company, the Property encumbered under any such substitute or replacement Lien is substantially similar in nature to the Property
encumbered by the otherwise permitted Lien which is being replaced; and 
 (5)    Permitted Liens. 

(b)    Notwithstanding the foregoing, the Company and any of its Subsidiaries may, without securing the Notes, create or
incur Liens which would otherwise be subject to the restrictions set forth in the preceding paragraph, if after giving effect thereto, Exempted Debt does not exceed the greater of (x) 35% of Consolidated Net Worth calculated as of the date of the
creation or incurrence of the Lien or (y) 35% of Consolidated Net Worth calculated as of the First Issue Date. 
 Section 4.7
Limitation on Sale and Lease-Back Transactions. 
 (a)    The Company shall not and shall not permit any of its
Subsidiaries to, enter into any sale and lease-back transaction for the sale and leasing back of any Property, whether now owned or hereafter acquired, of the Company or any Subsidiary of the Company, unless: 

(1)    such transaction was entered into prior to the First Issue Date; 

(2)    such transaction was for the sale and leasing back of any Property by a Subsidiary of the Company to the Company;


  
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 (3)    such transaction involves a lease for less than three years;

 (4)    the Company would be entitled to incur Indebtedness secured by a mortgage on the property to be leased in an
amount equal to the Attributable Liens with respect to such sale and lease-back transaction without equally and ratably securing the Notes pursuant to Section 4.6; or 

(5)    the Company applies an amount equal to the fair value of the proceeds of the Property sold to the purchase of
Property or to the retirement of long-term Indebtedness of the Company or any of its Subsidiaries within 120 days of the effective date of any such sale and lease-back transaction. In lieu of applying such amount to such retirement, the Company may,
or may cause any of its Subsidiaries to, deliver debt securities to the Trustee therefor for cancellation, such debt securities to be credited at the cost thereof to the Company. 

(b)    Notwithstanding the foregoing, the Company and any of its Subsidiaries may enter into any sale and lease-back
transaction which would otherwise be subject to the foregoing restrictions if after giving effect thereto and at the time of determination, Exempted Debt does not exceed the greater of (a) 35% of Consolidated Net Worth calculated as of the closing
date of the sale and lease-back transaction or (b) 35% of Consolidated Net Worth calculated as of the First Issue Date. 

8.    In addition to the definitions set forth in Article I of the Indenture, the Notes shall include the following
additional definitions, which, in the event of a conflict with the definition of terms in the Indenture, shall control: 

“Attributable Liens” means in connection with a sale and lease-back transaction the lesser of: 

(1)    the fair market value of the assets subject to such transaction; and 

(2)    the present value (discounted at a rate per annum equal to the average interest borne by all outstanding debt
securities issued under the Indenture (which may include debt securities in addition to the Notes) determined on a weighted average basis and compounded semi-annually) of the obligations of the lessee for rental payments during the term of the
related lease. 
 “Business Day” means any day except a Saturday, Sunday or a legal holiday in the City of New York, New
York (or in connection with any payment, the place of payment) on which banking institutions are authorized or required by law, regulation or executive order to close. 

“Consolidated Net Worth” means, as of any date of determination, the Stockholders’ Equity of the Company and its
Consolidated Subsidiaries on that date. 
 “Consolidated Subsidiary” means, as of any date of determination and with
respect to any Person, any Subsidiary of that Person whose financial data is, in accordance with GAAP, reflected in that Person’s consolidated financial statements. 

“Credit Facilities” means, one or more debt facilities (including, without limitation, the Revolving Credit Agreement) or
commercial paper facilities, in each case, with banks or other institutional lenders providing for revolving credit loans, term loans, receivables financing 

  
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(including through the sale of receivables to such lenders or to special purpose entities formed to borrow from such lenders against such receivables) or letters of credit, in each case, as
amended, restated, modified, renewed, refunded, replaced (whether upon or after termination or otherwise) or refinanced (including by means of sales of debt securities to institutional investors) in whole or in part from time to time. 

“Exempted Debt” means the sum of the following as of the date of determination: 

(1)    Indebtedness of the Company incurred after the First Issue Date and secured by Liens not permitted by
Section 4.6(a) above; and 
 (2)    Attributable Liens of the Company and any of its Subsidiaries in respect of
sale and lease-back transactions entered into after the First Issue Date pursuant to Section 4.7(b) above. 
 “Finance
Lease” means, as to any Person, a lease of any Property by that Person as lessee that is, or should be recorded as a “finance lease” on the balance sheet of that Person prepared in accordance with GAAP. 

“First Issue Date” means May 6, 2020. 

“GAAP” means accounting principles generally accepted in the United States set forth in the Accounting Standards Codification
of the Financial Accounting Standards Board or in such other documents by such other entity as have been approved by a significant segment of the accounting profession, which are in effect as of the date of determination. 

“Governmental Agency” means: 

(1)    any foreign, federal, state, county or municipal government, or political subdivision thereof; 

(2)    any governmental or quasi-governmental agency, authority, board, bureau, commission, department, instrumentality or
public body; 
 (3)    any court or administrative tribunal; and 

(4)    with respect to any Person, any arbitration tribunal or other nongovernmental authority to whose jurisdiction that
Person has consented. 
 “Hedging Obligations” means, with respect to any specified Person, the obligations of such Person
under: 
 (1)    interest rate swap agreements (whether from fixed to floating or from floating to fixed), interest rate
cap agreements and interest rate collar agreements; 
 (2)    other agreements or arrangements designed to manage
interest rates or interest rate risk; and 
 (3)    other agreements or arrangements designed to protect such Person
against fluctuations in currency exchange rates or commodity prices. 

  
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 “Indebtedness” of any Person means, without duplication, any indebtedness,
whether or not contingent, in respect of borrowed money or evidenced by bonds, notes, debentures or similar instruments or letters of credit (or reimbursement agreements with respect thereto) or representing the balance deferred and unpaid of the
purchase price of any Property (including pursuant to Finance Leases), except any such balance that constitutes an accrued expense or trade payable, if and to the extent any of the foregoing indebtedness would appear as a liability upon a balance
sheet of such Person prepared on a consolidated basis in accordance with GAAP (but does not include contingent liabilities which appear only in a footnote to a balance sheet), and shall also include, to the extent not otherwise included, the
guaranty of items which would be included within this definition. 
 “Laws” means, collectively, all foreign, federal,
state and local statutes, treaties, rules, regulations, ordinances, codes and administrative or controlling precedents of any Governmental Agency. 

“Lien” means any lien, security interest, charge or encumbrance of any kind (including any conditional sale or other title
retention agreement, any lease in the nature thereof, and any agreement to give any security interest). 
 “Make-Whole
Amount” means the excess of (1) the net present value, on the redemption date, of the principal being redeemed or paid and the amount of interest (exclusive of interest accrued to the date of redemption) that would have been payable if
such redemption had not been made (calculated as if the maturity date of the Notes was the par call date relating to the Notes, to the extent applicable), over (2) the aggregate principal amount of such Notes being redeemed or paid. Net present
value shall be determined by discounting, on a semi-annual basis, such principal and interest at the Reinvestment Rate (as defined below and as determined on the third Business Day preceding the date of redemption) from the respective dates on which
such principal and interest would have been payable if such redemption had not been made. 
 “Permitted Liens” means: 

(1)    Liens securing Indebtedness under Credit Facilities; 

(2)    Liens on accounts receivable, merchandise inventory, equipment, and patents, trademarks, trade names and other
intangibles, securing Indebtedness of the Company; 
 (3)    Liens on any assets of the Company, any of its
Subsidiaries’ assets, or the assets of any joint venture to which the Company or any of its Subsidiaries is a party, created solely to secure obligations incurred to finance the refurbishment, improvement or construction of such asset, which
obligations are incurred no later than 24 months after completion of such refurbishment, improvement or construction, and all renewals, extensions, refinancings, replacements or refundings of such obligations; 

(4)    (a) Liens given to secure the payment of the purchase price incurred in connection with the acquisition (including
acquisition through merger or consolidation) of Property (including shares of stock), including Finance Lease transactions in connection with any such acquisition, and (b) Liens existing on Property at the time of acquisition thereof or at the
time of acquisition by the Company or one of its Subsidiaries of any Person then owning such Property whether or 

  
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not such existing Liens were given to secure the payment of the purchase price of the Property to which they attach; provided that, with respect to clause (a), the Liens shall be given
within 24 months after such acquisition and shall attach solely to the Property acquired or purchased and any improvements then or thereafter placed thereon; 

(5)    Liens in favor of customs and revenue authorities arising as a matter of law to secure payment of customs duties in
connection with the importation of goods; 
 (6)    Liens upon specific items of inventory or other goods and proceeds
of any Person securing such Person’s obligations in respect of bankers’ acceptances issued or created for the account of such Person to facilitate the purchase, shipment or storage of such inventory or other goods; 

(7)    Liens securing reimbursement obligations with respect to letters of credit that encumber documents and other
Property relating to such letters of credit and the products and proceeds thereof; 
 (8)    Liens on key-man life insurance policies granted to secure Indebtedness of the Company against the cash surrender value thereof; 

(9)    Liens encumbering customary initial deposits and margin deposits and other Liens in the ordinary course of
business, in each case securing Hedging Obligations and forward contract, option, futures contracts, futures options or similar agreements or arrangements designed to protect the Company or any of its Subsidiaries from fluctuations in interest
rates, currencies or the price of commodities; 
 (10)    Liens arising out of conditional sale, title retention,
consignment or similar arrangements for the sale of goods entered into by Company or any of its Subsidiaries in the ordinary course of business; 

(11)    pre-existing Liens on assets acquired by the Company or any of its
Subsidiaries after the First Issue Date; 
 (12)    Liens in favor of the Company or in favor of any of its
Subsidiaries; 
 (13)    inchoate Liens incident to construction or maintenance of real property, or Liens incident to
construction or maintenance of real property, now or hereafter filed of record for sums not yet delinquent or being contested in good faith, if reserves or other appropriate provisions, if any, as shall be required by GAAP shall have been made
therefore; 
 (14)    statutory Liens arising in the ordinary course of business with respect to obligations which are
not delinquent or are being contested in good faith, if reserves or other appropriate provisions, if any, as shall be required by GAAP shall have been made therefore; 

(15)    Liens consisting of pledges or deposits to secure obligations under workers’ compensation laws or similar
legislation, including Liens of judgments thereunder which are not currently dischargeable; 

  
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 (16)    Liens consisting of pledges or deposits of Property to secure
performance in connection with operating leases made in the ordinary course of business to which Company or any of its Subsidiaries is a party as lessee, provided the aggregate value of all such pledges and deposits in connection with any
such lease does not at any time exceed 162⁄3% of the annual fixed rentals payable under such lease; 

(17)    Liens consisting of deposits of Property to secure statutory obligations of the Company or statutory obligations
of any of its Subsidiaries in the ordinary course of its business; 
 (18)    Liens consisting of deposits of Property
to secure (or in lieu of) surety, appeal or customs bonds in proceedings to which the Company or any of its Subsidiaries is a party in the ordinary course of its business, but not in excess of $75,000,000; 

(19)    purchase money Liens or purchase money security interests upon or in any Property acquired or held by Company or
any of its Subsidiaries in the ordinary course of business to secure the purchase price of such Property or to secure Indebtedness incurred solely for the purpose of financing the acquisition of such Property; 

(20)    Liens on an asset created in connection with the acquisition, construction or development of additions, extensions
or improvements to such asset which shall be financed by obligations described in Sections 142, 144(a) or 144(c) of the Internal Revenue Code of 1986, as amended, or by obligations entitled to substantially similar tax benefits under other
legislation or regulations in effect from time to time; and 
 (21)    Liens on Property subject to escrow or similar
arrangements established in connection with litigation settlements. 
 “Person” means any individual, corporation,
partnership, joint venture, association, limited liability company, joint-stock company, trust, unincorporated organization or government or any agency or political subdivision thereof. 

“Property” means any property or asset, whether real, personal or mixed, or tangible or intangible. 

“Reinvestment Rate” means 0.300% plus the weekly yield for the most recent week set forth in the most recent Statistical
Release (as defined below) for the constant maturity U.S. Treasury security (rounded to the nearest month) corresponding to the remaining life to maturity, as of the payment date of the principal being redeemed or paid. If no maturity exactly
corresponds to such maturity, yields for the two published maturities most closely corresponding to such maturity shall be calculated pursuant to the immediately preceding sentence and the Reinvestment Rate shall be interpolated or extrapolated from
such yields on a straight-line basis, rounding in each of such relevant periods to the nearest month. For the purpose of calculating the Reinvestment Rate, the most recent Statistical Release published prior to the date of determination of the
Make-Whole Amount shall be used. 
 “Revolving Credit Agreement” means the Second Amended and Restated Credit Agreement,
dated as of December 12, 2019, among the Company, the banks therein named, Citibank, N.A., as administrative agent, JPMorgan Chase Bank, N.A., as syndication agent, and 

  
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Citibank, N.A., JPMorgan Chase Bank, N.A., Barclays Bank PLC, BofA Securities, Inc., Goldman Sachs Bank USA and Morgan Stanley Senior Funding, Inc., as joint lead arrangers and joint book
runners, as such agreement may be further amended (including any amendment, restatement, refinancing and successors thereof), supplemented or otherwise modified from time to time, including any increase in the principal amount of the obligations
thereunder. 
 “Statistical Release” means the statistical release designated “H.15” or any comparable online
data source or publication which is made available by the Federal Reserve System and which establishes yields on actively traded U.S. government securities adjusted to constant maturities, or, if such Statistical Release is not published at the time
of any determination under the Indenture, then such other reasonably comparable index which shall be designated by the Company. 

“Stockholders’ Equity” means, as of any date of determination, stockholders’ equity as of that date determined in
accordance with GAAP; provided that there shall be excluded from Stockholders’ Equity any amount attributable to capital stock that is, directly or indirectly, required to be redeemed or repurchased by the issuer thereof at a specified
date or upon the occurrence of specified events or at the election of the holder thereof. 
 “Subsidiary” of any specified
person means any corporation, association or other business entity of which more than 50% of the total voting power of shares of capital stock entitled (without regard to the occurrence of any contingency) to vote in the election of directors,
managers or trustees thereof is at the time owned or controlled, directly or indirectly, by such person or one or more of the other Subsidiaries of that person or a combination thereof. 

9.    Section 9.1(h) of the Indenture shall be amended and restated solely with respect to the Notes as follows: 

(h)    to make any change that does not adversely affect the rights of any Securityholder in any material respect; 

10.    Pursuant to Section 3.4 of the Indenture, solely with respect to the Notes, notices of redemption sent by the
Company pursuant to the Indenture may be conditional. 
 11.    The Depository for the Notes shall be The Depository
Trust Company (“DTC”). 
 12.    The undersigned is authorized to approve the form, terms and
conditions of the Notes. 
 13.    The undersigned has read the provisions of the Indenture, including the covenants and
conditions precedent, pertaining to the issuance of the Notes. 
 14.    In connection with this Certificate, the
undersigned has examined the documents, corporate records and certificates and has made such inquiries of the other officers of the Company, which he or she has deemed necessary to enable him or her to express an informed opinion as to whether or
not such comments and conditions have been complied with. 

  
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 15.    In the opinion of the undersigned, all of the conditions and
covenants related to the issuance of the Notes have been complied with. 
 [Signature follows] 

  
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 IN WITNESS WHEREOF, the undersigned has executed this Officer’s Certificate as
of the date first set forth above. 
  

			
	By:	 	 /s/ Justin G. Claeys

		 	 Name: Justin G. Claeys
 Title: Vice
President, Finance and Treasurer




  
 Signature Page to
Officer’s Certificate for the Notes 













 Annex A 

Form of Note 












 [Face of Note] 

 
 CUSIP 031162 CW8 

2.300% Senior Notes due 2031 
  

			
	No. ___	  	$_______

 AMGEN INC. 

promises to pay to CEDE & CO. or registered assigns, 

the principal sum of __________ DOLLARS on February 25, 2031. 

Interest Payment Dates: February 25 and August 25 

Record Dates: 15th day prior to February 25 and August 25 

Dated: May 6, 2020 












 
			
	AMGEN INC.
		
	By:	 	      

		 	Name:
		 	Title:


  

	
	 This is one of the Notes referred to
 in the
within-mentioned Indenture:


  

			
	 THE BANK OF NEW YORK MELLON

TRUST COMPANY, N.A., as Trustee



			
		
	By:	 	      

		 	Authorized Officer


			
	
	Authentication Date:
                                         
                      













 [REVERSE SIDE OF NOTE] 

2.300% SENIOR NOTES DUE 2031 

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE DEPOSITORY
OR A NOMINEE OF THE DEPOSITORY. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND MAY NOT BE TRANSFERRED EXCEPT
AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY, BY A NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE DEPOSITORY OR BY THE DEPOSITORY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITORY OR A NOMINEE OF SUCH A SUCCESSOR
DEPOSITORY. 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY TO THE ISSUER OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY
PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL
SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 Capitalized terms used herein have the meanings assigned
to them in the Indenture referred to below unless otherwise indicated. 
  

	 	(1)	 INTEREST. Amgen Inc., a Delaware corporation (the “Company”), promises to pay interest on the
principal amount of this Note at 2.300% per annum from May 6, 2020 until maturity. The Company will pay interest in cash semi-annually in arrears on February 25 and August 25 of each year, or if any such day is not a Business Day, on the
next succeeding Business Day (each, an “Interest Payment Date”). Interest on the Notes will accrue from the most recent date to which interest has been paid or, if no interest has been paid, from the date of issuance; provided that
the first Interest Payment Date shall be February 25, 2021; provided further that after February 25, 2021, if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on
the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date. The interest rate will be computed on the basis of a 360-day year of twelve
30-day calendar months. 


  

	 	(2)	 METHOD OF PAYMENT. The Company will pay interest on the Notes (except defaulted interest) to the Persons who
are registered Holders of Notes at the close of business on the day that is 15 days prior to the next succeeding Interest Payment Date (whether or not such day is a Business Day), even if such Notes are canceled
















	 	
after such record date and on or before such Interest Payment Date, except as provided in Section 2.13 of the Indenture with respect to defaulted interest. The Notes will be payable as to
principal and interest at the office or agency of the Company maintained for such purpose in the Borough of Manhattan, the City and State of New York (or, if the Company fails to maintain such office or agency, at the corporate trust office of the
trustee in New York, New York or if the trustee does not maintain an office in New York, at the office of a paying agent in New York), or, at the option of the Company, payment of interest may be made by check mailed to the Holders at their
addresses set forth in the register of Holders; provided that payment by wire transfer of immediately available funds will be required with respect to principal of and interest on all Global Securities and all other Notes the Holders of which
will have provided wire transfer instructions to the Company or the Paying Agent. Such payment will be in the currency of the United States of America. 

  

	 	(3)	 PAYING AGENT AND REGISTRAR. Initially, The Bank of New York Mellon Trust Company, N.A., the Trustee under the
Indenture, will act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity. 



 

	 	(4)	 INDENTURE. The terms of the Notes include those stated in the Indenture dated May 22, 2014, between the
Company and the Trustee (the “Indenture”), and those made part of the Indenture by the Officer’s Certificate dated May 6, 2020, delivered pursuant thereto (the “Officer’s Certificate”) and the TIA. The
Notes are subject to all such terms, and the Holders are referred to the Indenture and the TIA for a statement of them. 


  

	 	(5)	 OPTIONAL REDEMPTION. At any time prior to maturity, the Company will have the option to redeem all or a part of
the Notes upon not less than 10 nor more than 60 days’ notice. If the Notes are redeemed before November 25, 2030 (three months prior to the maturity date of the Notes), the redemption price will equal the sum of (1) 100% of the principal
amount of any Notes being redeemed, plus accrued and unpaid interest to, but not including, the redemption date, and (2) the Make-Whole Amount. If the Notes are redeemed on or after November 25, 2030, (three months prior to the maturity
date of the Notes), the redemption price will equal 100% of the principal amount being redeemed, plus accrued and unpaid interest to, but not including, the redemption date. Unless the Company defaults in the payment of the redemption price,
interest will cease to accrue on the Notes or portions thereof called for redemption on the applicable redemption date. 


  

	 	(6)	 NOTICE OF REDEMPTION. Notice of redemption will be mailed at least 10 days but not more than 60 days before the
redemption date to each Holder whose Notes are to be redeemed at its registered address, except that redemption notices may be mailed more than 60 days prior to a redemption date if the notice is issued in connection with a defeasance of the Notes
or a satisfaction or discharge of the Indenture. Notes in denominations larger than $2,000 may be redeemed in part but only in whole multiples of $1,000, unless all of the Notes held by a Holder are to be redeemed. Notices of redemption for the
Notes may be conditional. 















	 	(7)	 MANDATORY REDEMPTION. Except as provided in Section 8 below, the Company is not required to make mandatory
redemption or sinking fund payments with respect to the Notes. 


  

	 	(8)	 CHANGE OF CONTROL TRIGGERING EVENT. In the event of a Change of Control Triggering Event, the Holders may
require the Company to purchase for cash all or a portion of their Notes at a purchase price equal to 101% of the principal amount of the notes, plus accrued and unpaid interest, if any, pursuant to the provisions of Section 7 of the
Officer’s Certificate. If holders of not less than 90% in aggregate principal amount of the outstanding Notes validly tender and do not withdraw such Notes in a Change Of Control Offer and the Company, or any third party making such an offer in
lieu of the Company, purchases all of the Notes validly tendered and not withdrawn by such holders, the Company or such third party will have the right, upon not less than 10 days nor more than 60 days’ prior notice, provided that such notice
is given not more than 30 days following such repurchase pursuant to the Change Of Control Offer described above, to redeem all Notes that remain outstanding following such purchase on a date specified in such notice (the “Second Change Of
Control Payment Date”) and at a price in cash equal to 101% of the aggregate principal amount of Notes repurchased plus any accrued and unpaid interest on the Notes repurchased to, but not including, the Second Change Of Control Payment
Date. 


  

	 	(9)	 DEFEASANCE PRIOR TO MATURITY. The Indenture contains provisions for defeasance of (i) the entire
indebtedness of the Notes or (ii) certain covenants and Events of Default with respect to the Notes, in each case upon compliance with certain conditions set forth therein. 



 

	 	(10)	 RESTRICTIVE COVENANTS. The Indenture and the Officer’s Certificate impose certain limitations on the
Company and its Subsidiaries, including limitations on the Company’s and its Subsidiaries’ ability to create or incur certain Liens on any of their respective properties or assets and to enter into certain sale and lease-back transactions
and on the Company’s ability to engage in mergers or consolidations or the conveyance, transfer or lease of all or substantially all of its properties and assets. These limitations are subject to a number of important qualifications and
exceptions and reference is made to the Indenture and the Officer’s Certificate for a description thereof. 


  

	 	(11)	 DENOMINATIONS, TRANSFER, EXCHANGE. The Notes are in registered form without coupons in denominations of $2,000
and integral multiples of $1,000. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and
transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company need not exchange or register the 















	 	
transfer of any Note or portion of a Note selected for redemption, except for the unredeemed portion of any Note being redeemed in part. Also, the Company need not exchange or register the
transfer of any Notes for a period of 15 days before a selection of Notes to be redeemed or during the period between a record date and the corresponding Interest Payment Date. 


 

	 	(12)	 PERSONS DEEMED OWNERS. The registered Holder of a Note may be treated as its owner for all purposes.



  

	 	(13)	 AMENDMENT, SUPPLEMENT AND WAIVER. Subject to certain exceptions, the Indenture or the Notes may be amended or
supplemented with the consent of the Holders of at least a majority in aggregate principal amount of the then outstanding Notes voting as a single class, and any existing Default or Event or Default or compliance with any provision of the Indenture
or the Notes may be waived with the consent of the Holders of a majority in aggregate principal amount of the then outstanding Notes voting as a single class. Without the consent of any Holder of a Note, the Indenture or the Notes may be amended or
supplemented to cure any ambiguity, defect or inconsistency; to comply with Article V of the Indenture; to provide for uncertificated Notes in addition to or in place of certificated Notes; to add guarantees with respect to the Notes or secure the
Notes; to surrender any of the Company’s rights or powers under the Indenture; to add covenants or events of default for the benefit of the Holders of the Notes; to comply with the applicable procedures of the applicable depositary; to make any
change that would not adversely affect the rights under the Indenture of any such Holder in any material respect; to provide for the issuance of and establish the form and terms and conditions of Notes of any series as permitted by the Indenture; to
evidence and provide for the acceptance of appointment under the Indenture by a successor trustee with respect to the Notes and to add to or change any of the provisions of the Indenture necessary to provide for the administration of the trusts in
the Indenture by more than one trustee; or to comply with the requirements of the SEC in order to effect or maintain the qualification of the Indenture under the TIA. No amendment to cure any ambiguity, defect or inconsistency in the Indenture made
solely to conform the Indenture to the description of notes contained in the Prospectus Supplement related to the Notes, dated May 4, 2020, will be deemed to adversely affect the interests of the Holders of the Notes. 



 

	 	(14)	 DEFAULTS AND REMEDIES. If an Event of Default shall occur and be continuing, the principal of the Notes may be
declared (or, in certain cases, shall ipso facto become) due and payable in the manner and with the effect provided in the Indenture. 


  

	 	(15)	 TRUSTEE DEALINGS WITH COMPANY. The Trustee under the Indenture, in its individual or any other capacity, may
deal with the Company or an Affiliate of the Company with the same rights it would have if it were not Trustee. 


  

	 	(16)	 NO RECOURSE AGAINST OTHERS. A director, officer, employee or stockholder of the Company shall not have any
liability for any obligations of the 















	 	
Company under the Notes or the Indenture or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder by accepting a Note waives and releases all
such liability. The waiver and release are part of the consideration for the issuance of the Notes. 

  

	 	(17)	 AUTHENTICATION. This Note will not be valid until authenticated by the manual signature of the Trustee or an
authenticating agent. 


  

	 	(18)	 ABBREVIATIONS. Customary abbreviations may be used in the name of a Holder or an assignee, such as: TEN COM (=
tenants in common), TEN ENT (= tenants by the entireties), JT TEN (= joint tenants with right of survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (= Uniform Gifts to Minors Act). 



 

	 	(19)	 CUSIP NUMBERS. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification
Procedures, the Company has caused CUSIP numbers to be printed on the Notes, and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed
on the Notes or as contained in any notice of redemption, and reliance may be placed only on the other identification numbers placed thereon. 


  

	 	(20)	 GOVERNING LAW. THE INDENTURE AND THIS NOTE, INCLUDING ANY CLAIM OR CONTROVERSY ARISING OUT OF OR RELATED TO THE
INDENTURE OR THIS NOTE, SHALL BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK. 


 The Company will furnish to any Holder
upon written request and without charge a copy of the Indenture and/or the Officer’s Certificate. 
 Requests may be made
to: 
 Amgen Inc. 

One Amgen Center Drive 
 Thousand
Oaks, CA 91320-1799 
 Attention: Investor Relations 












 ASSIGNMENT FORM 

To assign this Note, fill in the form below: 

(I) or (we) assign and transfer this Note to:
                                         
                        

(Insert assignee’s legal
name)                                        

  
  

(Insert assignee’s soc. sec. or tax I.D. no.) 
  

 
  

 
  

 
  

 
 (Print or type assignee’s name,
address and zip code) 
  

			
	 and irrevocably appoint
	 	      



			
	to transfer this Note on the books of the Company. The agent may substitute another to act for him.

 Date:
                                     

 

			
	Your Signature:	 	      

		 	(Sign exactly as your name appears on the face of this Note)


 Signature Guarantee*:
                                     

 

	*	 Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to
the Trustee).