AMGEN INC
10-Q, 2000-08-01
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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<PAGE>

                                 UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON D.C. 20549

                                   FORM 10-Q



(Mark One)
[ X ]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
       SECURITIES EXCHANGE ACT OF 1934

       For the quarterly period ended June 30, 2000

                                       OR

[   ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
       SECURITIES EXCHANGE ACT OF 1934


Commission file number 000-12477


                                   AMGEN INC.
             (Exact name of registrant as specified in its charter)


         Delaware                                               95-3540776
-------------------------------                        -------------------------
(State or other jurisdiction of                             (I.R.S. Employer
incorporation or organization)                             Identification No.)


One Amgen Center Drive, Thousand Oaks, California                91320-1799
--------------------------------------------------------------------------------
  (Address of principal executive offices)                       (Zip Code)


Registrant's telephone number, including area code:  (805) 447-1000


Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months  (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.        Yes  X    No

As of June 30, 2000, the registrant had 1,028,267,140 shares of Common Stock,
$0.0001 par value, outstanding.
<PAGE>

                                   AMGEN INC.

                                     INDEX

                                                                        Page No.

PART I    FINANCIAL INFORMATION

          Item 1.  Financial Statements................................... 3

            Condensed Consolidated Statements of
            Operations - three and six months
            ended June 30, 2000 and 1999.................................. 4

            Condensed Consolidated Balance Sheets -
            June 30, 2000 and December 31, 1999........................... 5

            Condensed Consolidated Statements of
            Cash Flows - six months
            ended June 30, 2000 and 1999.................................. 6

            Notes to Condensed Consolidated Financial
            Statements.................................................... 7

          Item 2.  Management's Discussion and Analysis
                   of Financial Condition and Results of
                   Operations............................................ 14


PART II   OTHER INFORMATION

          Item 1.  Legal Proceedings..................................... 20

          Item 4.  Submission of Matters to a Vote of
                   Security Holders...................................... 21

          Item 5.  Other Information..................................... 22

          Item 6.  Exhibits and Reports on Form 8-K...................... 22

          Signatures..................................................... 23

          Index to Exhibits.............................................. 24

                                       2
<PAGE>

                         PART I - FINANCIAL INFORMATION


Item 1.   Financial Statements

     The information in this report for the three and six months ended June 30,
2000 and 1999 is unaudited but includes all adjustments (consisting only of
normal recurring accruals, unless otherwise indicated) which Amgen Inc. ("Amgen"
or the "Company") considers necessary for a fair presentation of the results of
operations for those periods.

     The condensed consolidated financial statements should be read in
conjunction with the Company's financial statements and the notes thereto
contained in the Company's Annual Report on Form 10-K for the year ended
December 31, 1999.

     Interim results are not necessarily indicative of results for the full
fiscal year.

                                       3
<PAGE>

<TABLE>
<CAPTION>
                                                                 AMGEN INC.
                                              CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

                                                    (In millions, except per share data)
                                                                (Unaudited)

                                                             Three Months Ended                        Six Months Ended
                                                                  June 30,                                  June 30,
                                                           2000              1999                   2000               1999
                                                      --------------    ---------------       ----------------    --------------
<S>                                                   <C>               <C>                   <C>                 <C>
Revenues:
     Product sales                                        $  806.8           $  737.9               $1,504.4          $1,426.2
     Corporate partner revenues                               61.1               49.0                  135.3              76.0
     Royalty income                                           46.5               33.6                   88.8              63.8
                                                      --------------    ---------------       ----------------    --------------
        Total revenues                                       914.4              820.5                1,728.5           1,566.0
                                                      --------------    ---------------       ----------------    --------------

Operating expenses:
     Cost of sales                                           101.7               98.8                  187.4             191.2
     Research and development                                202.8              194.1                  392.6             382.1
     Selling, general and administrative                     205.1              157.2                  374.8             290.1
     Loss of affiliates, net                                   4.9                9.2                   21.3              12.0
                                                      --------------    ---------------       ----------------    --------------
        Total operating expenses                             514.5              459.3                  976.1             875.4
                                                      --------------    ---------------       ----------------    --------------

Operating income                                             399.9              361.2                  752.4             690.6

Other income (expense):
     Interest and other income                                43.2               24.5                   79.6              43.0
     Interest expense, net                                    (3.4)              (3.3)                  (7.6)             (5.5)
                                                      --------------    ---------------       ----------------    --------------
        Total other income                                    39.8               21.2                   72.0              37.5
                                                      --------------    ---------------       ----------------    --------------

Income before income taxes                                   439.7              382.4                  824.4             728.1

Provision for income taxes                                   137.1              114.8                  255.6             213.3
                                                      --------------    ---------------       ----------------    --------------

Net income                                                $  302.6           $  267.6               $  568.8          $  514.8
                                                      ==============    ===============       ================    ==============

Earnings per share:
     Basic                                                $   0.29           $   0.26               $   0.55          $   0.50
     Diluted                                              $   0.28           $   0.25               $   0.52          $   0.48

Shares used in calculation of earnings
     per share:
     Basic                                                 1,027.5            1,021.1                1,025.4           1,022.3
     Diluted                                               1,083.3            1,073.8                1,084.6           1,077.4


                                                      See accompanying notes.
</TABLE>
                                             4
<PAGE>

<TABLE>
<CAPTION>
                                                         AMGEN INC.
                                           CONDENSED CONSOLIDATED BALANCE SHEETS

                                            (In millions, except per share data)
                                                        (Unaudited)


                                                                                         June 30,             December 31,
                                                                                           2000                   1999
                                                                                    ----------------      -----------------
<S>                                                                                 <C>                   <C>
                                                              ASSETS
                                                              ------
Current assets:
      Cash and cash equivalents                                                           $  136.2               $  130.9
      Marketable securities                                                                1,484.9                1,202.1
      Trade receivables, net                                                                 312.3                  412.2
      Inventories                                                                            272.6                  184.3
      Other current assets                                                                   176.6                  135.8
                                                                                    ----------------      -----------------
            Total current assets                                                           2,382.6                2,065.3
                                                                                    ----------------      -----------------

Property, plant and equipment at cost, net                                                 1,638.5                1,553.6
Investments in affiliated companies                                                          120.9                  132.8
Other equity investments                                                                     238.4                  129.7
Other assets                                                                                 162.8                  196.2
                                                                                    ----------------      -----------------
                                                                                          $4,543.2               $4,077.6
                                                                                    ================      =================

                                               LIABILITIES AND STOCKHOLDERS' EQUITY
                                               ------------------------------------
Current liabilities:
      Accounts payable                                                                    $  120.1               $   83.4
      Commercial paper                                                                        99.7                   99.5
      Accrued liabilities                                                                    616.1                  648.2
                                                                                    ----------------      -----------------
            Total current liabilities                                                        835.9                  831.1

Long-term debt                                                                               223.0                  223.0
Contingencies

Stockholders' equity:
      Preferred stock; $0.0001 par value; 5.0 shares
        authorized; none issued or outstanding                                                   -                      -
      Common stock and additional paid-in capital;
        $0.0001 par value; 2,750.0 shares authorized;
        outstanding - 1,028.3 shares in 2000 and
        1,017.9 shares in 1999                                                             2,409.1                2,072.3
      Retained earnings                                                                    1,049.7                  966.0
      Accumulated other comprehensive income (loss)                                           25.5                  (14.8)
                                                                                    ----------------      -----------------
            Total stockholders' equity                                                     3,484.3                3,023.5
                                                                                    ----------------      -----------------
                                                                                          $4,543.2               $4,077.6
                                                                                    ================      =================


                                                      See accompanying notes.
</TABLE>
                                             5
<PAGE>

<TABLE>
<CAPTION>
                                                            AMGEN INC.
                                         CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                          (In millions)
                                                           (Unaudited)

                                                                                                       Six Months Ended
                                                                                                            June 30,
                                                                                                    2000                1999
                                                                                               -------------       --------------
<S>                                                                                            <C>                 <C>
Cash flows from operating activities:
     Net income                                                                                    $ 568.8              $ 514.8
     Depreciation and amortization                                                                   103.8                 89.2
     Gain on equity investments                                                                      (30.2)                   -
     Loss of affiliates, net                                                                          21.3                 12.0
     Cash provided by (used in):
        Trade receivables, net                                                                        99.9                (43.7)
        Inventories                                                                                  (88.3)               (11.0)
        Other current assets                                                                         (23.6)                 3.7
        Accounts payable                                                                              36.7                 22.4
        Accrued liabilities                                                                          (32.1)               (22.3)
                                                                                               -------------       --------------
           Net cash provided by operating activities                                                 656.3                565.1
                                                                                               -------------       --------------


Cash flows from investing activities:
     Purchases of property, plant and equipment                                                     (188.7)              (147.0)
     Proceeds from maturities of marketable securities                                                   -                 10.5
     Proceeds from sales of marketable securities                                                    337.7                373.3
     Purchases of marketable securities                                                             (619.4)              (494.0)
     Other                                                                                           (11.6)                (2.0)
                                                                                              --------------       --------------
           Net cash used in investing activities                                                    (482.0)              (259.2)
                                                                                              --------------       --------------


Cash flows from financing activities:
     Repayment of long-term debt                                                                         -                 (6.0)
     Net proceeds from issuance of common stock upon the
        exercise of employee stock options in
        connection with an employee stock purchase plan                                              175.5                131.6
     Tax benefits related to employee stock options                                                  161.2                 66.9
     Repurchases of common stock                                                                    (485.1)              (470.7)
     Other                                                                                           (20.6)               (29.2)
                                                                                               -------------       --------------
           Net cash used in financing activities                                                    (169.0)              (307.4)
                                                                                               -------------       --------------

Increase (decrease) in cash and cash equivalents                                                       5.3                 (1.5)

Cash and cash equivalents at beginning of period                                                     130.9                201.1
                                                                                               -------------       --------------
Cash and cash equivalents at end of period                                                         $ 136.2              $ 199.6
                                                                                               =============       ==============


                                                      See accompanying notes.
</TABLE>

                                             6
<PAGE>

                                   AMGEN INC.

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

                                 June 30, 2000


1.   Summary of significant accounting policies

  Business

     Amgen Inc. ("Amgen" or the "Company") is a global biotechnology company
that discovers, develops, manufactures and markets human therapeutics based on
advances in cellular and molecular biology.

  Principles of consolidation

     The consolidated financial statements include the accounts of the Company
and its wholly owned subsidiaries as well as affiliated companies for which the
Company has a controlling financial interest and exercises control over their
operations ("majority controlled affiliates").  All material intercompany
transactions and balances have been eliminated in consolidation.  Investments in
affiliated companies which are 50% or less owned and where the Company exercises
significant influence over operations are accounted for using the equity method.
All other equity investments are accounted for under the cost method.  The
caption "Loss of affiliates, net" includes Amgen's equity in the operating
results of affiliated companies and the minority interest others hold in the
operating results of Amgen's majority controlled affiliates.

  Inventories

     Inventories are stated at the lower of cost or market.  Cost is determined
in a manner which approximates the first-in, first-out (FIFO) method.
Inventories consist of currently marketed products and product candidates which
the Company expects to commercialize.  The inventory balance of such product
candidates totaled $75.3 million and $20.3 million as of June 30, 2000 and
December 31, 1999, respectively.  Inventories are shown net of applicable
reserves and allowances.  Inventories consist of the following (in millions):


                                         June 30,             December 31,
                                           2000                   1999
                                    ----------------       ----------------

             Raw materials                    $ 45.4                 $ 37.5
             Work in process                   178.6                   96.6
             Finished goods                     48.6                   50.2
                                    ----------------       ----------------
                                              $272.6                 $184.3
                                    ================       ================

                                       7
<PAGE>

  Product sales

     Product sales primarily consist of sales from EPOGEN(R) (Epoetin alfa) and
NEUPOGEN(R) (Filgrastim).

     The Company has the exclusive right to sell Epoetin alfa for dialysis,
diagnostics and all non-human uses in the United States.  The Company sells
Epoetin alfa under the brand name EPOGEN(R).  Amgen has granted to Ortho
Pharmaceutical Corporation (which has assigned its rights under the product
license agreement to Ortho Biotech, Inc.), a subsidiary of Johnson & Johnson
("Johnson & Johnson"), a license relating to Epoetin alfa for sales in the
United States for all human uses except dialysis and diagnostics.  Pursuant to
this license, Amgen does not recognize product sales it makes into the exclusive
market of Johnson & Johnson and does recognize the product sales made by Johnson
& Johnson into Amgen's exclusive market.  Sales in Amgen's exclusive market and
adjustments thereto are derived from Company shipments and from third-party data
on shipments to end users and their usage (see Note 6, "Contingencies - Johnson
& Johnson arbitrations").  Sales of the Company's other products are recognized
when shipped and title has passed.

  Foreign currency transactions

     The Company has a program to manage foreign currency risk.  As part of this
program, it has purchased foreign currency option and forward contracts to hedge
against possible reductions in values of certain anticipated foreign currency
cash flows generally over the next 12 months, primarily resulting from its sales
in Europe.  At June 30, 2000, the Company had option and forward contracts to
exchange foreign currencies for U.S. dollars of $21.6 million and $45.4 million,
respectively, all having maturities of seven months or less.  The option
contracts, which have only nominal intrinsic value at the time of purchase, are
designated as effective hedges of anticipated foreign currency transactions for
financial reporting purposes and accordingly, the net gains on such contracts
are deferred and recognized in the same period as the hedged transactions.  The
forward contracts do not qualify as hedges for financial reporting purposes and
accordingly, are marked-to-market.  Net gains on option contracts (including
option contracts for hedged transactions whose occurrence are no longer
probable) and changes in market values of forward contracts are reflected in
"Interest and other income".  The deferred premiums on option contracts and fair
values of forward contracts are included in "Other current assets".

     The Company has additional foreign currency forward contracts to hedge
exposures to foreign currency fluctuations of certain assets and liabilities
denominated in foreign currencies.  At June 30, 2000, the Company had forward
contracts to exchange foreign currencies for U.S. dollars of $46.3 million, all
having maturities of less than one month.  These contracts are designated as
effective hedges and accordingly, gains and losses on these forward contracts
are recognized in the same period the offsetting gains and losses of hedged
assets and liabilities are realized and recognized.  The fair values of the
forward contracts are included in the corresponding

                                       8
<PAGE>

captions of the hedged assets and liabilities. Gains and losses on forward
contracts, to the extent they differ in amount from the hedged assets and
liabilities, are included in "Interest and other income".

  Employee stock option and stock purchase plans

     The Company's employee stock option and stock purchase plans are accounted
for under Accounting Principles Board Opinion No. 25, "Accounting for Stock
Issued to Employees".

  Earnings per share

     Basic earnings per share is based upon the weighted-average number of
common shares outstanding.  Diluted earnings per share is based upon the
weighted-average number of common shares and dilutive potential common shares
outstanding.  Potential common shares are outstanding options under the
Company's employee stock option plans and potential issuances of stock under the
employee stock purchase plan which are included under the treasury stock method.

     The following table sets forth the computation for basic and diluted
earnings per share (in millions, except per share information):

<TABLE>
<CAPTION>
                                                                        Three Months Ended                 Six Months Ended
                                                                            June 30,                           June 30,
                                                                     2000            1999               2000            1999
                                                                -------------   -------------      -------------   -------------
<S>                                                           <C>             <C>                <C>             <C>
Numerator for basic and diluted
    earnings per share - net income                                  $302.6          $267.6             $568.8          $514.8
                                                                =============   =============      =============   =============

Denominator:
    Denominator for basic earnings
      per share - weighted-average shares                           1,027.5         1,021.1            1,025.4         1,022.3
    Effect of dilutive securities -
      employee stock options and stock
      issuances under the employee stock
      purchase plan                                                    55.8            52.7               59.2            55.1
                                                                -------------   -------------      -------------   -------------
    Denominator for diluted earnings
      per share - adjusted weighted-
      average shares                                                1,083.3         1,073.8            1,084.6         1,077.4
                                                                =============   =============      =============   =============

Basic earnings per share                                             $ 0.29          $ 0.26             $ 0.55          $ 0.50

Diluted earnings per share                                           $ 0.28          $ 0.25             $ 0.52          $ 0.48
</TABLE>



  Recent accounting pronouncements

     In June 1998, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 133 ("SFAS 133"), "Accounting for Derivative
Instruments and Hedging Activities".  SFAS 133 establishes accounting and
reporting standards requiring that all derivatives be recorded in the balance
sheet as either an asset or liability measured at fair value and that changes in
fair

                                       9
<PAGE>

value be recognized currently in earnings, unless specific hedge accounting
criteria are met. The Company is required to adopt SFAS 133, as amended, in the
first quarter of 2001 and is currently evaluating the effect that such adoption
may have on its results of operations and financial position.

     In December 1999, the Securities and Exchange Commission issued Staff
Accounting Bulletin No. 101 ("SAB 101"), "Revenue Recognition in Financial
Statements".  SAB 101 provides guidance on applying generally accepted
accounting principles to revenue recognition issues in financial statements.
The Company is required to adopt SAB 101 in the fourth quarter of 2000.
Management does not expect the adoption of SAB 101 to have a material effect on
the Company's results of operations or financial position.

  Use of estimates

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes.  Actual results may differ from those estimates.

  Basis of presentation

     The financial information for the three and six months ended June 30, 2000
and 1999 is unaudited but includes all adjustments (consisting only of normal
recurring accruals, unless otherwise indicated) which the Company considers
necessary for a fair presentation of the results of operations for these
periods.  Interim results are not necessarily indicative of results for the full
fiscal year.

  Reclassification

     Certain prior year amounts have been reclassified to conform to the current
year presentation.


2.   Debt

     As of June 30, 2000, the Company had $223 million of unsecured long-term
debt securities outstanding.  These unsecured long-term debt securities
consisted of:  1) $100 million of debt securities that bear interest at a fixed
rate of 6.5% and mature in 2007 that were issued in December 1997 under a $500
million debt shelf registration (the "Shelf"), 2) $100 million of debt
securities that bear interest at a fixed rate of 8.1% and mature in 2097 and 3)
$23 million of debt securities that bear interest at a fixed rate of 6.2% and
mature in 2003.  Under the Shelf, all of the remaining $400 million of debt
securities available for issuance may be offered under the Company's medium-term
note program from time to time with terms to be determined by market conditions.

     The Company has a commercial paper program which provides for unsecured
short-term borrowings up to an aggregate of $200 million.

                                       10
<PAGE>

As of June 30, 2000, commercial paper with a face amount of $100 million was
outstanding. These borrowings had maturities of less than one month and had
effective interest rates averaging 6.0%.

     The Company also has an unsecured $150 million credit facility that expires
on May 28, 2003.  This credit facility supports the Company's commercial paper
program.  As of June 30, 2000, no amounts were outstanding under this line of
credit.

3.   Income taxes

     The provision for income taxes consists of the following (in millions):

<TABLE>
<CAPTION>
                                                   Three Months Ended                 Six Months Ended
                                                        June 30,                           June 30,
                                                   2000           1999               2000           1999
                                              -------------   ------------      -------------   ------------
<S>                                           <C>             <C>               <C>             <C>
Federal (including U.S. possessions)                 $126.1         $105.9             $235.0         $196.6
State                                                  11.0            8.9               20.6           16.7
                                              -------------   ------------      -------------   ------------
                                                     $137.1         $114.8             $255.6         $213.3
                                              =============   ============      =============   ============
</TABLE>



     The Company's effective tax rate for the three and six months ended June
30, 2000 was 31.2% and 31.0%, respectively, compared with 30.0% and 29.3% for
the same periods last year.  The higher effective tax rates in the current year
are primarily due to an increase in the current year's expected pretax income
without corresponding increases in the tax benefits associated with the
Company's Puerto Rico operations and research and experimentation credits.


4.   Stockholders' equity

     During the six months ended June 30, 2000, the Company repurchased 7.6
million shares of its common stock at a total cost of $485.1 million under its
common stock repurchase program.  In October 1999, the Board of Directors
authorized the Company to repurchase up to $2 billion of common stock through
December 31, 2000, replacing the remaining amount authorized in October 1998.
The amount the Company spends on and the number of shares repurchased each
quarter varies based on a variety of factors, including the stock price and
blackout periods in which the Company is restricted from repurchasing shares.
At June 30, 2000, $1,163.1 million of this authorization remained.  Stock
repurchased under the program is retired.

     On May 11, 2000, the Company's stockholders approved an increase in the
number of authorized shares of common stock from 1,500,000,000 to 2,750,000,000.

                                       11
<PAGE>

5.   Comprehensive income

     During the three and six months ended June 30, 2000, total comprehensive
income was $291.0 million and $609.2 million, respectively.  During the three
and six months ended June 30, 1999, total comprehensive income was $260.7
million and $495.4 million, respectively.  The Company's other comprehensive
income/loss is comprised of unrealized gains and losses on the Company's
available-for-sale securities and foreign currency translation adjustments.


6.   Contingencies

  Johnson & Johnson arbitrations

     In September 1985, the Company granted Johnson & Johnson's affiliate, Ortho
Pharmaceutical Corporation, a license relating to certain patented technology
and know-how of the Company to sell a genetically engineered form of recombinant
human erythropoietin, called Epoetin alfa, throughout the United States for all
human uses except dialysis and diagnostics.  A number of disputes have arisen
between Amgen and Johnson & Johnson as to their respective rights and
obligations under the various agreements between them, including the agreement
granting the license (the "License Agreement").

     A dispute between Amgen and Johnson & Johnson that has been the subject of
an arbitration proceeding relates to the audit methodology currently employed by
the Company to account for Epoetin alfa sales. The Company and Johnson & Johnson
are required to compensate each other for Epoetin alfa sales that either party
makes into the other party's exclusive market, sometimes described as
"spillover" sales.  The Company has established and is employing an audit
methodology to measure each party's spillover sales and to allocate the net
profits from those sales to the appropriate party. The arbitrator in this matter
(the "Arbitrator") issued an opinion adopting the Company's audit methodology
with certain adjustments and, subsequently, issued his final order confirming
that the Company was the successful party in the arbitration.  Pursuant to the
final order in the arbitration, an independent panel was formed principally (i)
to address ongoing challenges to the survey results for the years 1995 through
1999 and (ii) to refine the procedures for measuring the erythropoietin market
as may be necessary.  Johnson & Johnson has brought challenges under this
procedure to certain survey results for certain periods.  As a result of
decisions made by this independent panel regarding certain of these challenges
as well as other reduced uncertainties, the Company has reduced amounts
previously provided for potential spillover liabilities by $49 million in the
third quarter of 1999 and $23 million in the fourth quarter of 1998.

     Because the Arbitrator ruled that the Company was the successful party in
the arbitration, Johnson & Johnson was ordered to pay to the Company all costs
and expenses, including reasonable attorneys' fees, that the Company incurred in
the arbitration as well as one-half of the audit costs.  The Company submitted a
bill for such costs and expenses incurred over an eight-year period in

                                       12
<PAGE>

the amount of approximately $110 million. Johnson & Johnson contested
substantially all such costs and expenses. In addition, on October 26, 1998,
Johnson & Johnson filed a petition in the Circuit Court of Cook County, Illinois
(the "Illinois Lawsuit") seeking to vacate or modify the Arbitrator's award to
the Company of all costs and expenses, including reasonable attorney's fees and
costs, that the Company incurred in the arbitration. On January 26, 2000, the
Arbitrator ruled that the Company is entitled to recover approximately $78
million of its costs and expenses from Johnson & Johnson. On July 5, 2000, the
Company and Johnson & Johnson entered into a Settlement Agreement and Mutual
Release which provides that (i) the Company, as the successful party in the
arbitration, will receive from Johnson & Johnson $78 million for costs and
expenses, including reasonable attorneys' fees that the Company incurred in the
arbitration as well as one-half of the audit costs, (ii) the Company will pay to
Johnson & Johnson $10 million in full and final satisfaction of a dispute as to
the remaining amount due to Johnson & Johnson for the 1991-1994 spillover award
and (iii) Johnson & Johnson will voluntarily dismiss with prejudice the Illinois
Lawsuit. On July 17, 2000, the Arbitrator issued a final order awarding the
Company $78 million in costs and expenses, including reasonable attorneys' fees
that the Company incurred in the arbitration as well as one-half of the audit
costs. The Company will recognize the $78 million benefit of this award in the
third quarter of 2000. On July 24, 2000, the Illinois Lawsuit was dismissed with
prejudice.

     The Company has filed a demand in the arbitration to terminate Johnson &
Johnson's rights under the License Agreement and to recover damages for breach
of the License Agreement based on the Company's claim that Johnson & Johnson has
intentionally sold PROCRIT(R) (the brand name under which Johnson & Johnson
sells Epoetin alfa) into the Company's exclusive dialysis market.  Pursuant to
the Arbitrator's ruling, discovery has commenced.  Both the Company and Johnson
& Johnson filed motions for summary judgment which were argued in January 2000.
On March 10, 2000, the Arbitrator denied both motions for summary judgment.  A
trial date has been set for February 2001.  The Company is unable to predict at
this time the outcome of its demand for termination of the License Agreement or
when it will be resolved.

     While it is not possible to predict accurately or determine the eventual
outcome of the above described legal matters or various other legal proceedings
(including patent disputes) involving Amgen, the Company believes that the
outcome of these proceedings will not have a material adverse effect on its
annual financial statements.

                                       13
<PAGE>

Item 2.   Management's Discussion and Analysis of Financial Condition and
          Results of Operations

Liquidity and Capital Resources

     The Company had cash, cash equivalents and marketable securities of
$1,621.1 million at June 30, 2000, compared with $1,333.0 million at December
31, 1999.  Cash provided by operating activities has been and is expected to
continue to be the Company's primary source of funds.  During the six months
ended June 30, 2000, operations provided $656.3 million of cash compared with
$565.1 million during the same period last year.

     Capital expenditures totaled $188.7 million for the six months ended June
30, 2000, compared with $147.0 million for the same period a year ago.  The
Company anticipates spending approximately $450 million to $550 million in 2000
on capital projects and equipment to expand the Company's global operations.

     The Company receives cash from the exercise of employee stock options and
proceeds from the sale of stock by Amgen pursuant to the employee stock purchase
plan.  During the six months ended June 30, 2000, employee stock option
exercises, their related tax benefits and proceeds from the sale of stock by
Amgen pursuant to the employee stock purchase plan provided $336.7 million of
cash compared with $198.5 million for the same period last year.  Proceeds from
the exercise of employee stock options and their related tax benefits will vary
from period to period based upon, among other factors, fluctuations in the
market value of the Company's stock relative to the exercise price of such
options.

     The Company has a stock repurchase program primarily to reduce the dilutive
effect of its employee stock option and stock purchase plans.  During the six
months ended June 30, 2000, the Company purchased 7.6 million shares of its
common stock at a cost of $485.1 million compared with 13.9 million shares
purchased at a cost of $470.7 million during the same period last year.  In
October 1999, the Board of Directors authorized the Company to repurchase up to
$2 billion of common stock through December 31, 2000, replacing the remaining
amount authorized in October 1998.  The amount the Company spends on and the
number of shares repurchased each quarter varies based on a variety of factors,
including the stock price and blackout periods in which the Company is
restricted from repurchasing shares.  As of June 30, 2000, $1,163.1 million was
available for stock repurchases.

     To provide for financial flexibility and increased liquidity, the Company
has established several sources of debt financing.  As of June 30, 2000, the
Company had $223 million of unsecured long-term debt securities outstanding.
These unsecured long-term debt securities consisted of:  1) $100 million of debt
securities that bear interest at a fixed rate of 6.5% and mature in 2007 that
were issued in December 1997 under a $500 million debt shelf registration (the
"Shelf"), 2) $100 million of debt securities that bear interest at a fixed rate
of 8.1% and mature in 2097 and 3) $23 million of debt securities that bear
interest at a fixed rate of 6.2% and mature in

                                       14
<PAGE>

2003. Under the Shelf, all of the remaining $400 million of debt securities
available for issuance may be offered under the Company's medium-term note
program from time to time with terms to be determined by market conditions.

     The Company's sources of debt financing also include a commercial paper
program which provides for unsecured short-term borrowings up to an aggregate
face amount of $200 million.  As of June 30, 2000, commercial paper with a face
amount of $100 million was outstanding.  These borrowings had maturities of less
than one month and had effective interest rates averaging 6.0%.  In addition,
the Company has an unsecured $150 million credit facility that expires on May
28, 2003.  This credit facility supports the Company's commercial paper program.
As of June 30, 2000, no amounts were outstanding under this line of credit.

     The primary objectives for the Company's investment portfolio are liquidity
and safety of principal.  Investments are made to achieve the highest rate of
return to the Company, consistent with these two objectives.  The Company's
investment policy limits investments to certain types of instruments issued by
institutions with investment grade credit ratings and places restrictions on
maturities and concentration by type and issuer.  The Company invests its excess
cash in securities with varying maturities to meet projected cash needs.

     The Company believes that existing funds, cash generated from operations
and existing sources of debt financing are adequate to satisfy its working
capital and capital expenditure requirements for the foreseeable future, as well
as to support its stock repurchase program.  However, the Company may raise
additional capital from time to time.


Results of Operations

  Product sales

     Product sales were $806.8 million and $1,504.4 million during the three and
six months ended June 30, 2000, respectively.  These amounts represent increases
of $68.9 million and $78.2 million or 9% and 5%, respectively, over the same
periods last year.  Quarterly product sales are influenced by a number of
factors, including underlying demand, wholesaler inventory management practices
and foreign exchange effects.

     EPOGEN(R) (Epoetin alfa)

     EPOGEN(R) sales were $493.0 million and $933.4 million for the three and
six months ended June 30, 2000, respectively.  These amounts represent increases
of $65.0 million and $110.5 million or 15% and 13%, respectively, over the same
periods last year.  These increases were primarily due to higher demand.  Sales
in the first six months of 2000 were adversely impacted by year 2000-related
sales to wholesalers in the fourth quarter of 1999 for which the Company
provided extended payment terms and, the Company believes,

                                       15
<PAGE>

by dialysis provider inventory drawdowns in 2000 of additional 1999 year-end
stockpiling. The Company also believes that some of this dialysis provider
stockpiling may have been due to year 2000 concerns and year-end contract
expirations.

     NEUPOGEN(R) (Filgrastim)

     Worldwide NEUPOGEN(R) sales for the three months ended June 30, 2000 were
$309.7 million, an increase of $6.2 million or 2% over the same period last
year.  For the six months ended June 30, 2000, worldwide NEUPOGEN(R) sales were
$559.7 million, a decrease of $30.8 million or 5% from the same period last
year.

     During the second quarter of 2000, NEUPOGEN(R) sales were adversely
impacted by several factors, including foreign exchange effects and continued
low inventory levels at major wholesalers.  The Company believes that
NEUPOGEN(R) demand also softened in the second quarter of 2000 and grew at a
mid-single digit rate, which includes the effect of higher prices in the U.S.
The Company believes this softness in demand was due in part to the realignment
of the oncology sales force.

     NEUPOGEN(R) sales in the first six months of 2000 were adversely impacted
primarily by year 2000-related sales to wholesalers in the fourth quarter of
1999 for which the Company provided extended payment terms and, the Company
believes, by additional wholesaler inventory drawdowns in 2000.  In addition,
NEUPOGEN(R) sales in the first six months of 2000 were also adversely impacted
by the stronger U.S. dollar.  These decreases were partially offset by higher
demand, which includes the effect of higher prices in the U.S.

     Other product sales

     Other product sales primarily consist of INFERGEN(R) (Interferon alfacon-
1).  INFERGEN(R) sales were $3.8 million and $10.7 million for the three and six
months ended June 30, 2000, respectively.  These amounts represent decreases of
$2.5 million and $1.9 million or 40% and 15%, respectively, from the same
periods last year.  INFERGEN(R) was launched in October 1997 for the treatment
of chronic hepatitis C virus infection.  There are existing treatments,
including combination therapy, for this infection against which INFERGEN(R)
competes.  The Company cannot predict the extent to which it will maintain its
share or further penetrate this market.

  Corporate partner revenues

     During the three and six months ended June 30, 2000, corporate partner
revenues increased $12.1 million and $59.3 million, or 25% and 78%,
respectively, compared with the same periods last year.  These increases were
primarily due to amounts earned from Kirin-Amgen, Inc. related to the NESP
development program.

                                       16
<PAGE>

  Cost of sales

     Cost of sales as a percentage of product sales was 12.6% and 12.5% for the
three and six months ended June 30, 2000, respectively, compared with 13.4% for
both of the same periods last year.  These decreases as a percentage of product
sales were due in part to increased manufacturing efficiencies.

  Research and development

     During the three and six months ended June 30, 2000, research and
development expenses increased $8.7 million and $10.5 million, or 4% and 3%,
respectively, compared with the same periods last year.  Research and
development expenses increased primarily due to higher staff-related costs
necessary to support ongoing product development activities and higher clinical
trial costs.  These increases were substantially offset by a reduction in
clinical manufacturing and product licensing costs.

  Selling, general and administrative

     During the three and six months ended June 30, 2000, selling, general and
administrative ("SG&A") expenses increased $47.9 million and $84.7 million, or
30% and 29%, respectively, compared with the same periods last year.  SG&A
expenses increased primarily due to higher staff-related costs and outside
marketing expenses as the Company continues to support its existing products and
prepares for anticipated new product launches.

  Interest and other income

     During the three and six months ended June 30, 2000, interest and other
income increased $18.7 million and $36.6 million, or 76% and 85%, respectively,
compared with the same periods last year.  These increases were primarily due to
gains realized on the sale of certain equity securities in the Company's
portfolio.

  Income taxes

     The Company's effective tax rate for the three and six months ended June
30, 2000 was 31.2% and 31.0%, respectively, compared with 30.0% and 29.3% for
the same periods last year.  The higher effective tax rates in the current year
are primarily due to an increase in the current year's expected pretax income
without corresponding increases in the tax benefits associated with the
Company's Puerto Rico operations and research and experimentation credits.

  Foreign currency transactions

     The Company has a program to manage certain portions of its exposure to
fluctuations in foreign currency exchange rates arising from international
operations.  The Company generally hedges the receivables and payables with
foreign currency forward contracts, which typically mature within one to three
months.  The Company uses foreign currency option and forward contracts which
generally expire within 12 months to hedge certain anticipated future sales and

                                       17
<PAGE>

expenses.  At June 30, 2000, outstanding foreign currency option and forward
contracts totaled $21.6 million and $91.7 million, respectively.


Financial Outlook

     The Company expects the EPOGEN(R) sales growth rate in 2000 to be in the
low teens.  As average hematocrits have risen, the rate of demand growth has
slowed and the Company expects this trend to continue in the future.  Patients
receiving treatment for end stage renal disease are covered primarily under
medical programs provided by the federal government. Therefore, EPOGEN(R) sales
may also be affected by future changes in reimbursement rates or a change in the
basis for reimbursement by the federal government.

     In their fiscal year 2001 budget, the Clinton administration has proposed a
Medicare cost savings plan which includes a provision for cutting Medicare
reimbursement of EPOGEN(R) by 10%. This proposal will be addressed during the
federal government's fiscal year 2001 budget process.  The Company believes the
proposal, if enacted, would primarily affect dialysis providers that use
EPOGEN(R) and it is difficult to predict its impact on Amgen.

     Assuming that foreign exchange rates for the U.S. dollar remain at levels
existing at June 30, 2000, the Company expects NEUPOGEN(R) sales in 2000 to be
approximately the same as in 1999.  The Company believes that there may be a
trend in some cancer settings towards the use of chemotherapy treatments that
are less myelosuppressive.  Chemotherapy treatments that are less
myelosuppressive may require less NEUPOGEN(R).  Future NEUPOGEN(R) sales growth
is dependent primarily upon further penetration of existing markets and the
effects of competitive products.  NEUPOGEN(R) usage is expected to continue to
be affected by cost containment pressures from governments and private insurers
on health care providers worldwide.  In addition, reported NEUPOGEN(R) sales
will continue to be affected by changes in foreign currency exchange rates.  In
both domestic and foreign markets, sales of NEUPOGEN(R) are dependent, in part,
on the availability of reimbursement from third party payors such as governments
(for example, Medicare and Medicaid programs in the U.S.) and private insurance
plans.  Therefore, NEUPOGEN(R) sales may also be affected by future changes in
reimbursement rates or changes in the bases for reimbursement.

     In their fiscal year 2001 budget, the Clinton administration has proposed a
reduction in the basis upon which Medicare reimburses for outpatient
prescription drugs from the current 95% of average wholesale price ("AWP") to
83% of AWP.  This proposal would impact reimbursement of NEUPOGEN(R).  The
Company believes the proposal, if enacted, would primarily affect customers that
use NEUPOGEN(R) and it is difficult to predict its impact on Amgen.

     INFERGEN(R) (Interferon alfacon-1) was launched in October 1997 for the
treatment of chronic hepatitis C virus infection.  There are existing
treatments, including combination therapy, for this infection against which
INFERGEN(R) competes.  The Company cannot

                                       18
<PAGE>

predict the extent to which it will maintain its share or further penetrate this
market.

     In 2000, SG&A expenses are expected to significantly increase as the
Company continues to support its existing products and prepares for anticipated
new product launches.

     Excluding a legal award benefit of $78 million to be recorded in the third
quarter of 2000 (see Note 6 to the Condensed Consolidated Financial Statements),
Amgen expects earnings per share for 2000 to be in the range of $1.06 to $1.08.
Estimates of future product sales, operating expenses and earnings per share are
necessarily speculative in nature and are difficult to predict with accuracy.

     Except for the historical information contained herein, the matters
discussed herein are by their nature forward-looking.  Investors are cautioned
that forward-looking statements or projections made by the Company, including
those made in this document, are subject to risks and uncertainties that may
cause actual results to differ materially from those projected.  Reference is
made in particular to forward-looking statements regarding product sales,
earnings per share and expenses.  Amgen operates in a rapidly changing
environment that involves a number of risks, some of which are beyond the
Company's control.  Future operating results and the Company's stock price may
be affected by a number of factors, including, without limitation: (i) the
results of preclinical and clinical trials; (ii) regulatory approvals of product
candidates, new indications and manufacturing facilities; (iii) reimbursement
for Amgen's products by governments and private payors; (iv) health care
guidelines and policies relating to Amgen's products; (v) intellectual property
matters (patents) and the results of litigation; (vi) competition; (vii)
fluctuations in operating results and (viii) rapid growth of the Company.  These
factors and others are discussed herein and in the sections appearing in "Item
1.  Business - Factors That May Affect Amgen" in the Company's Annual Report on
Form 10-K for the year ended December 31, 1999 which sections are incorporated
herein by reference and filed as an exhibit hereto.


Legal Matters

     The Company is engaged in arbitration proceedings with one of its
licensees.  For a discussion of these matters, see Note 6 to the Condensed
Consolidated Financial Statements.

                                       19
<PAGE>

                          PART II - OTHER INFORMATION


Item 1.   LEGAL PROCEEDINGS

     Legal proceedings are reported in the Company's Annual Report on Form 10-K
for the year ended December 31, 1999, with material developments since that
report described in the Company's Form 10-Q for the quarter ended March 31,
2000, and below.  While it is not possible to predict accurately or to determine
the eventual outcome of these matters, the Company believes that the outcome of
these proceedings will not have a material adverse effect on the annual
financial statements of the Company.

Transkaryotic Therapies and Aventis S.A. litigation

     On May 15, 2000, trial began in the United States District Court in Boston,
Massachusetts (the "Court") and is ongoing.  On June 9, 2000, the Court granted
Transkaryotic Therapies, Inc.'s ("TKT") and Hoechst Marion Roussel, Inc.'s
("HMR" - now Aventis S.A., together with TKT, the "Defendants") motion for non-
infringement of U.S. Patent No. 5,618,698 (the "'698 Patent"), removing the '698
Patent from this action.  The Court also held that, although the Defendants'
erythropoietin product does not literally fall within the scope of U.S. Patent
No. 5,621,080 (the "'080 Patent"), such product may infringe if it is found to
be equivalent to the product claimed by the '080 Patent.  Additionally, the
Court denied the Defendants' motion for non-infringement of U.S. Patent No.
5,547,933 (the "'933 Patent").  On July 21, 2000, the Court granted Amgen's
motion for judgment on the Defendants' defenses of invalidity based upon
anticipation and obviousness.  The issues of infringement of the '933 Patent,
the '080 Patent and U.S. Patent No. 5,756,349 remain to be decided by the Court
as well as the other validity and inequitable conduct defenses raised by the
Defendants.

Securities litigation

     The class action complaint filed against the Company and certain of its
current and former officers in the California Superior Court for the County of
Ventura was dismissed with prejudice on May 31, 2000.

Johnson & Johnson arbitrations

     The Company is engaged in arbitration proceedings with one of its
licensees.  See Note 6 to the Condensed Consolidated Financial Statements,
"Contingencies-Johnson & Johnson arbitrations".

                                       20
<PAGE>

Item 4.   Submission of Matters to a Vote of Security Holders

     (a)  The Company held its Annual Meeting of Stockholders on May 11, 2000.

     (b)  Omitted pursuant to Instruction 3 to Item 4 of Form 10-Q.

     (c)  The four matters voted upon at the meeting were:  (i) to elect three
          directors to a three year term of office expiring at the Annual
          Meeting of Stockholders in the year 2003; (ii) to approve an amendment
          to the Company's Restated Certificate of Incorporation, as amended, to
          increase the authorized number of shares of Common Stock from
          1,500,000,000 shares to 2,750,000,000 shares ("Proposal Two"); (iii)
          to approve an amendment to the Company's Amended and Restated Employee
          Stock Purchase Plan to extend the term of such plan indefinitely
          ("Proposal Three"); and (iv) to ratify the selection of Ernst & Young
          LLP as independent auditors of the Company for the year ending
          December 31, 2000 ("Proposal Four").

          (i)   With respect to each of the nominees for director, Gordon M.
                Binder, received 902,615,275 shares in favor and 5,938,887
                shares were withheld, Fredrick W. Gluck received 847,729,463
                shares in favor and 60,824,699 shares were withheld and Franklin
                P. Johnson, Jr. received 902,666,186 shares in favor and
                5,887,976 shares were withheld, and there were no abstentions or
                broker non-votes.  All nominees were declared to have been
                elected as directors to hold office until the Annual Meeting of
                Stockholders in the year 2003.

          (ii)  With respect to Proposal Two, 840,847,018 shares were in favor,
                63,282,003 shares were against, 4,424,308 shares abstained and
                there were 833 broker non-votes.  Proposal Two was declared to
                have been approved.

          (iii) With respect to Proposal Three, 878,301,243 shares were in
                favor, 24,001,076 shares were against, 6,209,340 shares
                abstained and there were 42,503 broker non-votes.  Proposal
                Three was declared to have been approved.

          (iv)  With respect to Proposal Four, 903,214,912 shares were in favor,
                1,694,599 shares were against, 3,644,649 shares abstained and
                there were 2 broker non-votes.  Proposal Four was declared to
                have been approved.

     (d)  Not applicable.

                                       21
<PAGE>

Item 5.  Other Information

     The Company's 2001 Annual Meeting of Stockholders will be held on May 17,
2001.


Item 6.  Exhibits and Reports on Form 8-K

     (a) Reference is made to the Index to Exhibits included herein.

     (b) Reports on Form 8-K - none

                                       22
<PAGE>

                                   SIGNATURES


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                 Amgen Inc.
                                 (Registrant)



Date:   8/1/00                   By: /s/ Kathryn E. Falberg
----------------                 ------------------------------------
                                 Kathryn E. Falberg
                                 Senior Vice President, Finance
                                 and Chief Financial Officer



Date:   8/1/00                   By: /s/ Barry D. Schehr
----------------                 ------------------------------------
                                 Barry D. Schehr
                                 Vice President, Financial
                                 Operations, and
                                 Chief Accounting Officer

                                       23
<PAGE>

                                   AMGEN INC.


                               INDEX TO EXHIBITS


Exhibit No.                      Description

   3.1      Restated Certificate of Incorporation as amended. (14)
   3.2      Amended and Restated Bylaws. (22)
   3.3*     Certificate of Amendment of Restated Certificate of Incorporation.
   3.4*     Certificate of Amendment of Certificate of Designations of Series A
            Junior Participating Preferred Stock.
   4.1      Indenture dated January 1, 1992 between the Company and Citibank
            N.A., as trustee. (6)
   4.2      First Supplement to Indenture, dated February 26, 1997 between the
            Company and Citibank N.A., as trustee. (11)
   4.3      Officer's Certificate pursuant to Sections 2.1 and 2.3 of the
            Indenture, as supplemented, establishing a series of securities "8-
            1/8% Debentures due April 1, 2097." (13)
   4.4      8-1/8% Debentures due April 1, 2097. (13)
   4.5      Form of stock certificate for the common stock, par value $.0001 of
            the Company. (14)
   4.6      Officer's Certificate pursuant to Sections 2.1 and 2.3 of the
            Indenture, dated as of January 1, 1992, as supplemented by the First
            supplemental Indenture, dated as of February 26, 1997, each between
            the Company and Citibank, N.A., as Trustee, establishing a series of
            securities entitled "6.50% Notes Due December 1, 2007". (16)
   4.7      6.50% Notes Due December 1, 2007 described in Exhibit 4.6. (16)
   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. (19)
  10.1      Company's Amended and Restated 1991 Equity Incentive Plan. (22)
  10.2      Sixth Amendment to the Company's Amended and Restated Retirement and
            Savings Plan as amended and restated April 1, 1996. (21)
  10.3      Shareholder's Agreement of Kirin-Amgen, Inc., dated May 11, 1984,
            between the Company and Kirin Brewery Company, Limited (with certain
            confidential information deleted therefrom). (1)
  10.4*     Amendment Nos. 1, 2, and 3, dated March 19, 1985, July 29, 1985 and
            December 19, 1985, respectively, to the Shareholder's Agreement of
            Kirin-Amgen, Inc., dated May 11, 1984.
  10.5*     Product License Agreement, dated September 30, 1985, and Technology
            License Agreement, dated, September 30, 1985 between the Company and
            Ortho Pharmaceutical Corporation.

                                       24
<PAGE>

  10.6*     Product License Agreement, dated September 30, 1985, and Technology
            License Agreement, dated September 30, 1985 between Kirin-Amgen,
            Inc. and Ortho Pharmaceutical Corporation.
  10.7*     Company's Amended and Restated Employee Stock Purchase Plan.
  10.8      Research, Development Technology Disclosure and License Agreement
            PPO, dated January 20, 1986, by and between the Company and Kirin
            Brewery Co., Ltd. (2)
  10.9      Amendment Nos. 4 and 5, dated October 16, 1986 (effective July 1,
            1986) and December 6, 1986 (effective July 1, 1986), respectively,
            to the Shareholders Agreement of Kirin-Amgen, Inc. dated May 11,
            1984 (with certain confidential information deleted therefrom). (3)
  10.10     Assignment and License Agreement, dated October 16, 1986, between
            the Company and Kirin-Amgen, Inc. (with certain confidential
            information deleted therefrom). (3)
  10.11     G-CSF European License Agreement, dated December 30, 1986, between
            Kirin-Amgen, Inc. and the Company (with certain confidential
            information deleted therefrom). (3)
  10.12     Research and Development Technology Disclosure and License
            Agreement: GM-CSF, dated March 31, 1987, between Kirin Brewery
            Company, Limited and the Company (with certain confidential
            information deleted therefrom). (3)
  10.13     Company's Amended and Restated 1988 Stock Option Plan. (9)
  10.14     Company's Amended and Restated Retirement and Savings Plan. (9)
  10.15     Amendment, dated June 30, 1988, to Research, Development, Technology
            Disclosure and License Agreement: GM-CSF dated March 31, 1987,
            between Kirin Brewery Company, Limited and the Company. (4)
  10.16     Agreement on G-CSF in Certain European Countries, dated January 1,
            1989, between Amgen Inc. and F. Hoffmann-La Roche & Co. Limited
            Company (with certain confidential information deleted therefrom).
            (5)
  10.17     Partnership Purchase Agreement, dated March 12, 1993, between the
            Company, Amgen Clinical Partners, L.P., Amgen Development
            Corporation, the Class A limited partners and the Class B limited
            partner. (7)
  10.18     Amgen Inc. Supplemental Retirement Plan (As Amended and Restated
            Effective November 1, 1999). (23)
  10.19*    First Amendment to Amgen Inc. Change of Control Severance Plan.
  10.20     Amended and Restated Amgen Performance Based Management Incentive
            Plan. (22)
  10.21     Credit Agreement, dated as of May 28, 1998, among Amgen Inc., the
            Borrowing Subsidiaries named therein, the Banks named therein,
            Citibank, N.A., as Issuing Bank, and Citicorp USA, Inc., as
            Administrative Agent. (20)
  10.22     Promissory Note of Mr. George A. Vandeman, dated December 15, 1995.
            (8)
  10.23     Promissory Note of Mr. George A. Vandeman, dated December 15, 1995.
            (8)
  10.24     Agreement between Amgen Inc. and Dr. N. Kirby Alton, dated October
            11, 1999. (23)

                                       25
<PAGE>

   10.25    Amendment No. 1 to the Company's Amended and Restated Retirement and
            Savings Plan. (9)
   10.26    Seventh Amendment to the Amgen Retirement and Savings Plan as
            Amended and Restated effective April 1, 1996. (22)
   10.27    Amendment Number 2 to the Company's Amended and Restated Retirement
            and Savings Plan dated April 1, 1996. (12)
   10.28    Amgen Inc. Change of Control Severance Plan effective as of October
            20, 1998. (21)
   10.29    Preferred Share Rights Agreement, dated February 18, 1997, between
            Amgen Inc. and American Stock Transfer and Trust Company, Rights
            Agent. (10)
   10.30    First Amendment, effective January 1, 1998, to the Company's Amended
            and Restated Employee Stock Purchase Plan. (15)
   10.31    Third Amendment, effective January 1, 1997, to the Company's Amended
            and Restated Retirement and Savings Plan dated April 1, 1996. (15)
   10.32    Agreement between Amgen Inc. and Dr. Fabrizio Bonanni, dated March
            3, 1999. (23)
   10.33    Promissory Note of Ms. Kathryn E. Falberg, dated April 7, 1995. (17)
   10.34    Promissory Note of Mr. Edward F. Garnett, dated July 18, 1997. (17)
   10.35    Fourth Amendment to the Company's Amended and Restated Retirement
            and Savings Plan as amended and restated effective April 1, 1996.
            (17)
   10.36    Fifth Amendment to the Company's Amended and Restated Retirement and
            Savings Plan as amended and restated effective April 1, 1996. (17)
   10.37    Company's Amended and Restated 1987 Directors' Stock Option Plan.
            (12)
   10.38    Amended and Restated Agreement on G-CSF in the EU between Amgen Inc.
            and F. Hoffmann-La Roche Ltd (with certain confidential information
            deleted therefrom). (19)
   10.39    Collaboration and License Agreement, dated December 15, 1997,
            between the Company, GPI NIL Holdings, Inc. and Guilford
            Pharmaceuticals Inc. (with certain confidential information deleted
            therefrom). (18)
   10.40    Promissory Note of Dr. Fabrizio Bonanni, dated August 7, 1999. (23)
   10.41    Promissory Note of Dr. Fabrizio Bonanni, dated October 29, 1999.
            (23)
   10.42    Agreement between Amgen Inc. and Dr. Lawrence M. Souza, Ph.D., dated
            March 6, 2000. (24)
   10.43*   Agreement between Amgen Inc. and Mr. Gordon M. Binder, dated May 10,
            2000.
   27*      Financial Data Schedule.
   99*      Sections appearing under the heading "Item 1.  Business - Factors
            That May Affect Amgen" in the Company's Annual Report on Form 10-K
            for the year ended December 31, 1999.
----------------
*    Filed herewith.

                                       26
<PAGE>

(1)  Filed as an exhibit to the Annual Report on Form 10-K for the year ended
     March 31, 1984 on June 26, 1984 and incorporated herein by reference.
(2)  Filed as an exhibit to Amendment No. 1 to Form S-1 Registration Statement
     (Registration No. 33-3069) on March 11, 1986 and incorporated herein by
     reference.
(3)  Filed as an exhibit to the Form 10-K Annual Report for the year ended March
     31, 1987 on May 18, 1987 and incorporated herein by reference.
(4)  Filed as an exhibit to Form 8 amending the Quarterly Report on Form 10-Q
     for the quarter ended June 30, 1988 on August 25, 1988 and incorporated
     herein by reference.
(5)  Filed as an exhibit to the Form 8 dated November 8, 1989, amending the
     Annual Report on Form 10-K for the year ended March 31, 1989 on June 28,
     1989 and incorporated herein by reference.
(6)  Filed as an exhibit to Form S-3 Registration Statement dated December 19,
     1991 and incorporated herein by reference.
(7)  Filed as an exhibit to the Form 8-A dated March 31, 1993 and incorporated
     herein by reference.
(8)  Filed as an exhibit to the Annual Report on Form 10-K for the year ended
     December 31, 1995 on March 29, 1996 and incorporated herein by reference.
(9)  Filed as an exhibit to the Form 10-Q for the quarter ended September 30,
     1996 on November 5, 1996 and incorporated herein by reference.
(10) Filed as an exhibit to the Form 8-K Current Report dated February 18, 1997
     on February 28, 1997 and incorporated herein by reference.
(11) Filed as an exhibit to the Form 8-K Current Report dated March 14, 1997 on
     March 14, 1997 and incorporated herein by reference.
(12) Filed as an exhibit to the Annual Report on Form 10-K for the year ended
     December 31, 1996 on March 24, 1997 and incorporated herein by reference.
(13) Filed as an exhibit to the Form 8-K Current Report dated April 8, 1997 on
     April 8, 1997 and incorporated herein by reference.
(14) Filed as an exhibit to the Form 10-Q for the quarter ended March 31, 1997
     on May 13, 1997 and incorporated herein by reference.
(15) Filed as an exhibit to the Form 10-Q for the quarter ended June 30, 1997 on
     August 12, 1997 and incorporated herein by reference.
(16) Filed as an exhibit to the Form 8-K Current Report dated and filed on
     December 5, 1997 and incorporated herein by reference.
(17) Filed as an exhibit to the Annual Report on Form 10-K for the year ended
     December 31, 1997 on March 24, 1998 and incorporated herein by reference.
(18) Filed as Exhibit 10.40 to the Guilford Pharmaceuticals Inc. Form 10-K for
     the year ended December 31, 1997 on March 27, 1998 and incorporated herein
     by reference.
(19) Filed as an exhibit to the Form 10-Q for the quarter ended March 31, 1998
     on May 13, 1998 and incorporated herein by reference.

                                       27
<PAGE>

(20) Filed as an exhibit to the Form 10-Q for the quarter ended June 30, 1998 on
     August 14, 1998 and incorporated herein by reference.
(21) Filed as an exhibit to the Annual Report on Form 10-K for the year ended
     December 31, 1998 on March 16, 1999 and incorporated herein by reference.
(22) Filed as an exhibit to the Form 10-Q for the quarter ended June 30, 1999 on
     August 3, 1999 and incorporated herein by reference.
(23) Filed as an exhibit to the Annual Report on Form 10-K for the year ended
     December 31, 1999 on March 7, 2000 and incorporated herein by reference.
(24) Filed as an exhibit to the Form 10-Q for the quarter ended March 31, 2000
     on April 27, 2000 and incorporated herein by reference.

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