CHIRON CORP
10-Q, 1996-05-14
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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<PAGE>


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

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

                               OR

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

For Quarterly Period Ended March 31, 1996        Commission File Number: 0-12798

                               CHIRON CORPORATION
- --------------------------------------------------------------------------------
           (Exact name of registrant as specified in its charter)


     Delaware                                     94-2754624
- --------------------------------------------------------------------------------
(state or other jurisdiction of                   (I.R.S.Employer
incorporation or organization)                    Identification No.)


4560 Horton Street, Emeryville, California        94608
- --------------------------------------------------------------------------------
(Address of principal executive offices)          Zip code)


                                 (510) 655-8730
- --------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)


                                 Not Applicable
- --------------------------------------------------------------------------------
                   (Former name, former address and former
                    fiscal year, if changed since last report)

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

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

         Class                                Outstanding at May 5, 1996
         -----                                --------------------------
Common Stock, $0.01 par value                        42,287,304


<PAGE>


                               CHIRON CORPORATION
                                TABLE OF CONTENTS



                                                         PAGE NO.
                                                         --------

PART I.   FINANCIAL INFORMATION

     ITEM 1.  FINANCIAL STATEMENTS
     
          Consolidated Balance Sheets as of 
          March 31, 1996 and December 31, 1995 . . . . . . . . .3

          Consolidated Statements of Operations for the 
          three months ended March 31, 1996 and 1995 . . . . . .4
          
          Consolidated Statements of Cash Flows for the
          three months ended March 31, 1996 and 1995 . . . . . .5
          
          Notes to Consolidated Financial Statements . . . . . .6

     ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF 
              FINANCIAL CONDITION AND RESULTS OF OPERATIONS. . 15


PART II.       OTHER INFORMATION

     ITEM 1.  LEGAL PROCEEDINGS. . . . . . . . . . . . . . . . 23

     ITEM 2.  CHANGES IN SECURITIES. . . . . . . . . . . . . . 23

     ITEM 3.  DEFAULTS UPON SENIOR SECURITIES. . . . . . . . . 23

     ITEM 4.  SUBMISSION OF MATTERS TO A VOTE 
              OF SECURITY HOLDERS. . . . . . . . . . . . . . . 23

     ITEM 5.  OTHER INFORMATION. . . . . . . . . . . . . . . . 23

     ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K . . . . . . . . 23


SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . 37


                                       2


<PAGE>


                              CHIRON CORPORATION
                         CONSOLIDATED BALANCE SHEETS
                                (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                             March 31,   December 31,
                                                                               1996         1995
                                                                            ----------   -----------
                                                                             (Unaudited)
                                 ASSETS
<S>                                                                         <C>          <C>         
Current assets:
 Cash and cash equivalents                                                  $   84,809   $    74,318
 Short-term investments in marketable debt securities                           65,318        61,066
                                                                            ----------   -----------
     Total cash and short-term investments in marketable debt securities       150,127       135,384
 Accounts receivable                                                           295,577       285,779
 Inventories                                                                   170,139       165,941
 Other current assets                                                           54,591        49,899
                                                                            ----------   -----------
     Total current assets                                                      670,434       637,003
Noncurrent investments in marketable debt securities                            69,209        88,833
Property, plant, equipment and leasehold improvements, at cost:              
  Land and buildings                                                           209,708       208,233
  Laboratory, production and office equipment                                  298,126       292,828
  Leasehold improvements                                                       102,196        95,472
  Construction in progress                                                      82,197        62,046
                                                                            ----------   -----------
                                                                               692,227       658,579
  Less:  accumulated depreciation and amortization                             157,120       140,761
                                                                            ----------   -----------
   Net property, plant, equipment and leasehold improvements                   535,107       517,818
Purchased technology, net                                                       78,649        80,600
Other intangible assets, net                                                    73,425        71,571
Investments in equity securities and affiliated companies                       45,056        54,359
Other assets                                                                    39,495        40,014
                                                                            ----------   -----------
                                                                           $ 1,511,375   $ 1,490,198
                                                                            ----------   -----------
                                                                            ----------   -----------

                         LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
 Accounts payable                                                            $  80,870   $    81,081
 Accrued compensation and related expenses                                      41,854        56,994
 Short-term borrowings                                                          55,179        50,036
 Current portion of unearned revenue                                            20,025        20,838
 Taxes payable                                                                  31,353        27,551
 Other current liabilities                                                     135,000       132,095
                                                                            ----------   ----------- 
  Total current liabilities                                                    364,281       368,595
Long-term debt                                                                 416,924       413,248
Other noncurrent liabilities                                                    36,102        35,943
Commitments and contingencies
Stockholders' equity:
 Common stock                                                                      422           417
 Additional paid-in capital                                                  1,749,699     1,727,711
 Accumulated deficit                                                        (1,074,955)   (1,087,699)
 Cumulative foreign currency translation adjustment                            ( 2,545)          721
 Unrealized gain from investments                                               21,447        31,262
                                                                             ---------    ----------
  Total stockholders' equity                                                   694,068       672,412
                                                                             ---------    ----------
                                                                           $ 1,511,375   $ 1,490,198
                                                                             ---------    ----------
                                                                             ---------    ----------

</TABLE>

THE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ARE AN INTEGRAL PART
OF THIS STATEMENT.


                                       3


<PAGE>


                              CHIRON CORPORATION
                    CONSOLIDATED STATEMENTS OF OPERATIONS
                                 (UNAUDITED)
                    (IN THOUSANDS, EXCEPT PER SHARE DATA)


<TABLE>
<CAPTION>
                                                               Three Months Ended
                                                          ------------------------- 
                                                          March 31,       March 31,
                                                            1996            1995
                                                         ---------      ---------
<S>                                                       <C>             <C>
Revenues:
 Product sales, net                                     $ 238,259       $  183,909
 Equity in earnings of unconsolidated joint businesses     23,608           18,178
 Collaborative agreement revenues                          31,414            5,567
 Other revenues                                            12,470           10,592
                                                         --------        --------
   Total revenues                                         305,751          218,246

Expenses:
 Cost of sales                                            101,979           90,282
 Research and development                                  84,048           99,055
 Selling, general and administrative                       92,330           84,894
 Write-off of purchased in-process technologies                --          230,657
 Costs related to Ciba transaction                             --           49,520
 Restructuring and reorganization costs                        --           37,641
 Other operating expenses                                   3,107            2,280
                                                          -------          -------
   Total expenses                                         281,464          594,329
                                                          -------          -------

Income (loss) from operations                              24,287         (376,083)

Other expense, net                                         (5,818)          (1,389)
                                                          -------          -------

Income (loss) before income taxes                          18,469         (377,472)

Provision for income taxes                                  5,725            8,306
                                                          -------          -------

Net income (loss)                                       $  12,744       $ (385,778)
                                                          -------          -------
Net income (loss) per share                             $    0.29       $    (9.64)
                                                          -------          -------
Weighted average number of shares
 used in computing per share amounts                       44,621           40,013
                                                          -------          -------


</TABLE>




THE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ARE AN INTEGRAL PART
OF THIS STATEMENT.


                                       4


<PAGE>


                             CHIRON CORPORATION
                    CONSOLIDATED STATEMENTS OF CASH FLOWS
                                (UNAUDITED)
                              (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                       Three Months Ended
                                                                     ---------------------
                                                                     March 31,   March 31,
                                                                       1996         1995  
                                                                     ---------   ---------
<S>                                                                  <C>         <C>
Cash flows from operating activities:
 Net income (loss)                                                  $  12,744   $ (385,778)
 Adjustments to reconcile net income (loss)
  to net cash provided by (used in) operating activities:           
   Depreciation and amortization                                       27,666       22,666
   Write-off of purchased in-process technologies                          --      230,657
   Other                                                                5,548       24,754
   Changes, excluding effects of acquisitions, to:
     Accounts receivable                                             (12,571)       63,604
     Inventories                                                     (10,814)      (26,749)
     Other current assets                                             (6,556)        3,139
     Accounts payable                                                 (5,784)        3,035
     Accrued compensation and related expenses                       (15,251)        4,670
     Taxes payable                                                      3,893        7,906
     Other current liabilities                                          4,690       47,324
     Other noncurrent liabilities                                       1,784       (2,053)
                                                                     --------     --------
     Net cash provided by (used in) operating activities                5,349       (6,825)
Cash flows from investing activities:
 Purchase of investments in marketable debt securities                (44,517)     (19,877)
 Sale and maturities of investments in marketable debt securities      59,317       86,880
 Capital expenditures                                                 (31,841)     (28,586)
 Businesses acquired, net of cash acquired                                 --      (81,788)
 Increase in other assets                                              (1,156)     (11,984)
                                                                     --------     --------
      Net cash used in investing activities                           (18,197)     (55,355)
Cash flows from financing activities:
 Net borrowings under line of credit arrangements                       5,600       42,971
 Repayment of notes payable and capital leases                         (3,849)      (2,450)
 Proceeds from capital contribution from Ciba                              --       24,845
 Proceeds from issuance of common stock                                21,588        3,060
                                                                     --------     --------
      Net cash provided by financing activities                        23,339       68,426
                                                                     --------     --------
      Net increase in cash and cash equivalents                        10,491        6,246
Cash and cash equivalents at beginning of the period                   74,318       84,876
                                                                     --------     --------
Cash and cash equivalents at end of the period                      $  84,809   $   91,122
                                                                     --------     --------

</TABLE>




THE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS ARE AN INTEGRAL PART
OF THIS STATEMENT.


                                       5


<PAGE>


                             CHIRON CORPORATION
                NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                              MARCH 31, 1996




1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

THE COMPANY

  Chiron Corporation (the "Company" or "Chiron") is a science-driven 
healthcare company that applies biotechnology and other techniques of modern 
biology and chemistry to develop, produce and sell products intended to 
improve the quality of life by diagnosing, preventing and treating human 
disease.  Chiron participates in four global human healthcare markets: 
diagnostics, therapeutics, pediatric and adult vaccines, and ophthalmic 
surgical products.  Chiron also has research programs underway in gene 
therapy and gene transfer, combinatorial chemistry, cardiovascular disease 
and critical care.

  Chiron's diagnostic business includes immunodiagnostics, critical care 
diagnostics and quantitative probe tests.  Chiron, through its subsidiary 
Ciba Corning Diagnostics Corp. ("CCD"), provides critical blood analyte 
systems which are used by hospitals to diagnose and monitor patients in 
critical care settings.  Chiron also provides blood screening tests, used to 
detect the presence of hepatitis viruses and retroviruses, through its joint 
business with Ortho Diagnostic Systems, Inc. ("Ortho"), a Johnson & Johnson 
company.  Chiron's therapeutics business emphasizes oncology and provides 
products to hospitals and large clinics in the United States and Europe.  
Chiron's vaccine business is based primarily on the sale of non-recombinant 
pediatric and flu vaccines in Italy and to a lesser extent in Southern Europe 
and other geographic regions and to certain international health services. 
Chiron is also involved in the development and marketing of new pediatric and 
adult vaccines. Through its ophthalmic business, Chiron provides products for 
the surgical correction of vision, as well as intraocular implants that 
deliver drugs to the eye.  Chiron's ophthalmic business markets its products 
in the United States, Europe, and other geographic regions.

BASIS OF PRESENTATION

  The information at March 31, 1996, and for the three months ended March 31, 
1996 and 1995, is unaudited, but includes all normal recurring adjustments 
which Chiron's management believes to be necessary for fair presentation of 
the periods presented.  The consolidated balance sheet amounts at December 
31, 1995, have been derived from audited financial statements. Certain 
previously reported amounts have been reclassified to conform with the 
current period presentation.  Interim results are not necessarily indicative 
of results for a full year.  This information should be read in conjunction 
with Chiron's audited consolidated financial statements for the year ended 
December 31, 1995.

  The consolidated financial statements include the accounts of the Company 
and its majority-owned subsidiaries.  All significant intercompany accounts 
and transactions have been eliminated in consolidation.  Investments in joint 
ventures, partnerships and interests in which Chiron has an equity interest 
of 50 percent or less are accounted for using the equity or cost method, or 
in accordance with Statement of Financial Accounting Standards No. 115, 
"Accounting for Certain Investments in Debt and Equity Securities," as 
appropriate.  Certain foreign subsidiaries are accounted for on a one-month 
lag.  The preparation of financial statements in conformity with


                                       6


<PAGE>

generally accepted accounting principles requires management to make 
estimates and assumptions that affect the reported amounts of assets and 
liabilities and disclosure of contingent assets and liabilities at the date 
of the financial statements and the reported amounts of revenues and expenses 
during the reporting period.  Actual results could differ materially from 
those estimates.

FISCAL YEAR

  The fiscal year of the Company is a 52 or 53-week year ending on the Sunday 
nearest the last day in December of each year.  As a result, the first 
quarters of 1996 and 1995 represent the thirteen-week periods ended March 31, 
1996, and April 2, 1995, respectively.  For presentation purposes, dates used 
in the consolidated financial statements and notes refer to the calendar 
month end.

INVENTORIES

  Pharmaceutical inventories are stated at the lower of cost or market using 
the average cost method or, in the case of vaccine products, using the 
last-in, first-out ("LIFO") method. Diagnostic and ophthalmic products are 
valued at cost, using the first-in, first-out ("FIFO") method which is less 
than market value.  Inventories consist of the following:

                            MARCH 31,   DECEMBER 31,
                              1996         1995
                          ------------  ----------
                               (IN THOUSANDS)

     Finished goods       $   99,878    $  96,327
     Work in progress         28,645       28,794
     Raw material             41,616       40,820
                          ----------    ---------
                          $  170,139    $ 165,941
                          ----------    ---------

INCOME TAXES

  Income tax expense for the quarter ended March 31, 1996 is based on an 
estimated annual effective income tax rate.  Income tax expense for the 
quarter ended March 31, 1995 includes a provision for state and foreign taxes 
based on estimated annual effective rates applicable to certain of the 
Company's subsidiaries.

PER SHARE DATA

  Per share information is based on the weighted average number of common and 
dilutive common equivalent shares outstanding. Common equivalent shares 
result from the assumed exercise of outstanding options and warrants that 
have a dilutive effect when applying the treasury stock method.  Shares 
assumed to be issued upon conversion of the Company's convertible debentures 
are not included for any of the periods presented since their inclusion would 
be anti-dilutive.  Fully diluted per share data has not been presented, as 
the amounts would not differ materially from primary per share data.

2.   BUSINESS COMBINATIONS

FIRST QUARTER 1995 ACQUISITIONS

   Effective January 1, 1995, under a series of agreements between Chiron and 
Ciba-Geigy Ltd. and its affiliates ("Ciba"), Chiron acquired all of the 
outstanding common stock of CCD and


                                       7


<PAGE>

Ciba's interests in Chiron Biocine Company (formerly The Biocine Company) and 
Biocine S.p.A. (through JV Vax B.V., a Netherlands company).  On March 31, 
1995, Chiron Vision acquired the ophthalmic surgical product division of 
IOLAB from Johnson & Johnson.  These acquisitions were accounted for under 
the purchase method of accounting.  As a result of the acquisitions and as 
required by generally accepted accounting principles, during the first 
quarter of 1995, Chiron recognized as an expense the amount allocated to 
purchased in-process technology resulting in a charge against earnings of 
$230.7 million.  Costs related to the Ciba transaction totaling $49.5 million 
were also included in the first quarter of 1995, primarily representing 
employee payments and related taxes, and legal and investment advisor fees.

ACQUISITION OF VIAGENE INC. ("VIAGENE")

  On September 29, 1995, Chiron acquired all of the outstanding common stock 
of Viagene, not previously owned by the Company, in exchange for 
approximately $35.5 million in cash and 916,000 shares of Chiron common 
stock.  Additionally, on September 29, 1995, unexercised options to purchase 
Viagene common stock were converted into options to purchase approximately 
132,000 shares of Chiron common stock.  Prior to the acquisition, Chiron had 
an ongoing collaboration with Viagene in the area of gene therapy and, 
pursuant to the collaboration arrangement, held an investment in the 
outstanding voting stock of Viagene with a carrying value, net of unrealized 
gains and a realized loss, of approximately $14.1 million as of September 29, 
1995.  The Viagene acquisition has been accounted for under the purchase 
method of accounting, and accordingly, Viagene's financial results are 
included in Chiron's consolidated operating results from September 29, 1995 
forward.

  The following unaudited pro forma information presents the results of 
operations of Chiron and Viagene for the three months ended March 31, 1995, 
with pro forma adjustments as if the acquisition had been consummated on 
January 1, 1995.  This pro forma information does not purport to be 
indicative of what would have occurred had the acquisition been made as of 
those dates or of results which may occur in the future.  The pro forma 
information does not include the write-off of purchased in-process technology 
of $130.3 million related to the acquisition recognized as an expense in the 
third quarter of 1995.

<TABLE>
<CAPTION>
                                                     THREE MONTHS ENDED MARCH 31, 1995
                                                   ------------------------------------
                                                   (IN THOUSANDS, EXCEPT PER SHARE DATA)
  <S>                                                           <C>
  Total revenues                                                $220,503
  Loss before non-recurring charges                             (390,303)
  Loss before non-recurring charges per share                      (9.54)
 
</TABLE>

AGREEMENT WITH BEHRINGWERKE AG

   On February 17, 1996, Chiron and Behringwerke AG, a subsidiary of Hoechst 
AG, reached an agreement whereby Chiron will purchase a 49 percent interest 
in the human vaccine business of Behringwerke AG for Deutsche mark 171.5 
million in cash. Under the terms of the agreement, Chiron has an option to 
purchase the remaining 51 percent interest in March 1998, 1999, 2000 or 2001 
and Behringwerke AG has the option to have Chiron acquire the remaining 51 
percent interest in March 2001.  During the period of mutual ownership, 
Chiron and Behringwerke AG will operate the vaccine business as a joint 
venture.  Chiron will report its share of the joint venture's results as 
equity in earnings of unconsolidated joint businesses.  Consummation of the 
transaction is subject to certain conditions, including regulatory approvals 
and customary conditions prior to closing.


                                       8


<PAGE>

3.   RESTRUCTURING AND REORGANIZATION COSTS

  During 1995, Chiron recorded $39.1 million in restructuring and 
reorganization charges, including $16.9 million arising from the acquisition 
and integration of IOLAB, representing the expected costs of integrating the 
acquired business with Chiron's existing business as well as write-downs of 
previously capitalized costs.  Of the total charge of $39.1 million, $8.0 
million is due to a change in plans to expand the Company's Emeryville 
research and development facilities, $7.7 million is related to the idling of 
the Company's Puerto Rico manufacturing facility and $1.0 million is related 
to a scale-back of manufacturing operations at the Company's Amsterdam 
facility.  The majority of these facility-related charges, as well as $3.7 
million of other facility-related charges, were paid in 1995.  Of the $16.9 
million recorded as a result of the acquisition of IOLAB, approximately $6.7 
million related to write-downs of previously capitalized facility and 
inventory costs.  The remaining $10.2 million consists of $5.5 million of 
employee termination costs and $4.7 million of lease termination and other 
costs.  The integration process is expected to be substantially completed by 
the end of 1997.

The current status of the accrued restructuring charges is summarized below:

<TABLE>
<CAPTION>
                                                                  AMOUNT
                                                  AMOUNT OF      UTILIZED      AMOUNT TO
                                                    TOTAL       THROUGH       BE UTILIZED
                                                RESTRUCTURING    MARCH 31,     IN FUTURE
                                                    CHARGE         1996         PERIODS
                                                -------------  ------------   -----------
                                                              (IN THOUSANDS)
  <S>                                           <C>            <C>            <C> 
  Chiron Vision restructuring charges:
     Employee-related costs                      $  5,506      $ (5,028)      $    478
     Facility and lease termination costs           6,242        (2,589)         3,653
     Duplicate and excess inventory                 3,476        (2,366)         1,110
     Other                                          1,724          (600)         1,124
                                                 --------     ---------       --------
                                                   16,948       (10,583)         6,365

  Puerto Rico manufacturing facility                7,650        (3,627)         4,023
  Postponement of Emeryville facility expansion     7,990        (7,990)            --
  Amsterdam manufacturing facility                  1,000        (1,000)            --
  Other facility-related                            3,718        (3,718)            --
  Other                                             1,750        (1,312)           438
                                                 --------     ---------       --------
                                                 $ 39,056      $(28,230)      $ 10,826
                                                 --------     ---------       --------
</TABLE>

4.   COLLABORATIONS AND JOINT BUSINESS ARRANGEMENTS

GENERAL

  The Company has entered into a number of collaborative arrangements with 
other pharmaceutical and biotechnology companies for the development and 
marketing of certain technologies and products.  The majority of these 
collaborations are in the development or clinical trial phase.  Chiron and 
its collaborative partners generally contribute certain technologies and 
research efforts to the collaboration.  In addition, Chiron and its 
collaborative partners commit, subject to certain limitations and 
cancellation clauses, to share in the funding of the collaborations' ongoing 
research and clinical trial costs.  Chiron, under certain of the 
arrangements, has purchased equity securities, including common and preferred 
stock and warrants to purchase common and preferred stock, of the 
collaborative partner.


                                       9


<PAGE>

JAPAN TOBACCO INC. ("JT")

  In March 1996, the Company and JT entered into a technology transfer and 
development agreement whereby the pharmaceutical division of JT acquired a 
non-exclusive, perpetual license to apply certain of Chiron's combinatorial 
chemistry technologies in JT's research and product development programs.  
Both Chiron and JT will share in certain improvements to the technology made 
by either party, subject to certain conditions. The agreement provides an 
initial technology transfer term of two years and may be extended at the 
option of JT for an additional two years.  In the first quarter of 1996, 
Chiron recorded initial collaborative research agreement revenues from JT of 
$7.5 million, pursuant to the agreement.

5.   CONTINGENCIES

  ABBOTT LABORATORIES.  On December 13, 1993, Chiron filed a patent 
infringement action against Abbott Laboratories ("Abbott") in the United 
States District Court for the Northern District of California. The suit 
alleged infringement of Chiron's U.S. Patent No. 5,156,949 ("the '949 
patent"), which claims the use of recombinant envelope antigens in 
immunoassays for Human Immunodeficiency Virus ("HIV") antibodies. On April 1, 
1996, Chiron and Ortho, Chiron's exclusive licensee under the '949 patent, 
entered into a settlement agreement with Abbott under which Abbott will be 
granted a royalty-bearing non-exclusive license to the '949 patent and 
foreign counterparts thereof. It is expected that the subject litigation will 
be dismissed upon the execution of definitive agreements.

  On September 12, 1995, the United States Patent & Trademark Office ("PTO") 
declared an interference between the '949 patent and an application owned by 
the U.S. Government and Centocor, Inc. ("Centocor").  Chiron is the junior 
party.  In the above described litigation with Abbott, the District Court 
granted Chiron's request for summary judgment that the U.S. 
Government/Centocor application in the subject interference neither enabled 
the claimed invention nor disclosed the best mode of practicing the 
invention.  If the PTO makes a similar ruling on either enablement or best 
mode, then Chiron will become the senior party.  It is not known when or on 
what basis the PTO will resolve the subject interference.

  On April 26, 1994, Abbott filed suit against Chiron in the United States 
District Court for the Northern District of Illinois alleging that the 
Company's bDNA probe assays infringed three patents licensed or acquired by 
Abbott from third parties.  On April 1, 1996, Chiron and Abbott entered into 
a settlement agreement under which Chiron will be granted a royalty-bearing 
non-exclusive license to the three patents in suit and the foreign 
counterparts thereof.  It is expected that the subject litigation will be 
dismissed upon the execution of definitive agreements.

  BIOANALYSIS/GEN-PROBE.  CCD, a wholly-owned subsidiary of Chiron, filed suit 
in the United States District Court for the Southern District of California 
against Bioanalysis Limited, Gen-Probe Incorporated and the University of 
Wales College of Medicine alleging, among other things, patent infringement, 
intentional interference with contractual rights, and breach of contract.  
CCD's claims arise under its 1984 license from Bioanalysis of 
chemiluminescense technology used by CCD in its ACS-TM- and Magic-Registered 
Trademark- Lite diagnostic test kits.  After CCD filed suit, Bioanalysis gave 
notice of default by CCD under the license and demanded that CCD cure the 
alleged breaches of the license agreement, including nonpayment of royalties, 
failing which  the agreement would be terminated.  In response to the notice 
of default, CCD commenced an arbitration proceeding in New York against 
Bioanalysis under the agreement and removed Bioanalysis as a party to the 
District Court proceeding.  In the arbitration, CCD seeks a declaration that 
CCD is not in default under the license agreement and

                                       10


<PAGE>

that the license agreement covers the use of the licensed technology in 
diagnostic test kits incorporating nucleic acid hybridization technology.  
Bioanalysis filed a counterclaim to the District Court lawsuit and a counter 
demand for arbitration, both of which seek relief based on the alleged 
contractual defaults identified in the default letter to CCD.  CCD, 
Bioanalysis, the University of Wales and Gen-Probe have now executed a 
Standstill and Tolling Agreement whereby all litigation activity (except for 
certain procedural matters) will be halted until June 23, 1996 and any 
contract cure period will be extended until June 30, 1996.

  EVANS. Biocine S.p.A. ("Biocine"), a wholly-owned subsidiary of Chiron, 
filed an action against Evans Medical Limited (a division of Medeva plc) 
("Evans") in the Tribunal of Milan on October 23, 1995 alleging invalidity of 
Evans' Italian counterpart to its European Patent No. 0 162 639 ("the '639 
patent"), allegedly relating to the p69 antigen of BORDATELLA PERTUSSIS. 
Biocine later filed a claim against Evans with the Milan court which seeks a 
judgment establishing that Biocine's Acelluvax-TM- and Acelluvax-TM- DTP 
vaccines do not infringe the Italian counterpart to the  '639 patent.  Evans' 
response to the Milan actions, filed in February 1996, asserts that Biocine's 
vaccines infringe the '639 patent.  The Milan court has ordered appointment 
of one or more technical consultants to investigate issues raised in this 
dispute.  Also in February 1996, Chiron and Chiron B.V. filed an action 
alleging invalidity and non-infringement of Evans' Dutch equivalent to the 
'639 patent in the District Court of The Hague in The Netherlands.  On April 
4, 1996, a similar claim was filed by Chiron against Evans' U.K. equivalent 
to the '639 patent in the High Court of Justice, Chancery Division, Patents 
Court of the U.K. SmithKline Beecham Biologicals S.A., Evans' exclusive 
licensee to the '639 patent for England and Wales, will be named as a 
defendant in the U.K.  Chiron believes that the Biocine vaccines do not 
infringe any valid claim of the '639 patent or its foreign counterparts.  
Biocine previously had opposed issuance of the '639 patent before the 
European Patent Office ("EPO") and, along with other parties, has appealed 
the EPO opposition decision which maintained the patent in amended form.

  INTERNATIONAL MUREX TECHNOLOGIES CORPORATION.  Chiron, Ortho, and certain 
Ortho affiliates have been involved in a series of legal actions against 
subsidiaries of International Murex Technologies Corporation ("IMTC").  
Beginning on March 2, 1992, Chiron, Ortho and Ortho Diagnostics Systems, 
Ltd. ("Ortho Ltd."), brought two successive actions in the High Court for 
England and Wales against Murex Diagnostics, Ltd. ("MD"), alleging 
infringement of Chiron's U.K. Patent No. 2,212,511 ("the '511 patent") which 
covers  certain hepatitis C virus ("HCV") immunodiagnostic tests.  On May 27, 
1994, the High Court granted judgment for Chiron, Ortho and Ortho Ltd., holding
the '511 patent valid and infringed, and ordered MD to pay damages in an amount 
to be determined.  On November 30, 1994, the High Court granted Chiron's, 
Ortho's and Ortho Ltd.'s request for an injunction.  Both MD and the 
Chiron/Ortho parties appealed various aspects of the High Court's judgments.  
In rulings on November 2 and 7, 1995, the U.K. Court of Appeal held that, 
with the exception of one claim, the '511 patent is valid and infringed, and 
that Chiron could amend the patent by deleting the invalid claim, thus 
allowing damage proceedings in the High Court to continue.  The Court of 
Appeal also reversed a ruling by the High Court that MD had a defense to the 
damages claimed by Ortho Ltd. prior to October 13, 1993 on the basis of 
provisions in a licensing agreement between Chiron and Ortho.  The Court of  
Appeal denied all parties leave to appeal to the House of Lords.  
Nevertheless, the parties have applied directly to the House of Lords for 
leave to appeal.  While the Appeal Committee of the House of Lords has 
granted preliminary leave to appeal, it is not known when the House of Lords 
will make a final decision regarding leave to appeal.

    On February 16, 1996, the High Court ordered MD to make an interim 
damages payment of 6,000,000 British pounds to the Chiron/Ortho parties by 
February 23, 1996.  On February 22, 1996, MD made it known that it had 
changed its name to Specialist Diagnostics Ltd. ("SDL"), and filed a petition 
for voluntary liquidation.  The High Court has ordered that a damages inquiry 
be held with respect

                                       11


<PAGE>

to SDL in November 1996.  It is not known how much (if any) of the original 
6,000,000 British pounds interim award or any further damages award will be 
collected from the allegedly insolvent SDL, or when such collection could be 
effected.

    Infringement proceedings against IMTC subsidiaries on German and European 
patents corresponding to the '511 patent were also brought by Chiron (and in 
some cases with Ortho and/or its affiliated companies) in Germany, Italy, The 
Netherlands and Belgium.  On January 23, 1995, Chiron was granted an 
injunction in Germany by the Dusseldorf District Court on Chiron's German and 
European patents for HCV.  On May 8, 1995, Chiron was granted a cross-border 
preliminary injunction by the District of The Hague in The Netherlands based 
on Chiron's European HCV patent, preventing infringement by IMTC subsidiaries 
in The Netherlands, Belgium, France, Spain and Luxembourg. An infringement 
action also has been brought against IMTC and certain of its subsidiaries in 
the Federal Court of Australia, New South Wales District Registry, in 
response to a suit seeking revocation of the Australian counterpart of the 
'511 patent.  The Australian litigation is scheduled for trial beginning June 
24, 1996.

  On April 11, 1996, the Opposition Division of the EPO upheld Chiron's 
European HCV patent (Pat. No. 0 318 216) ("the '216 patent") 
over the oppositions of MD/SDL, United Biomedical, Inc., F. Hoffmann-La Roche 
& Co. AG., Behringwerke AG and the Research Foundation for Microbial Diseases 
of Osaka University.  The Opposition Division's decision is subject to appeal.

  On March 5, 1996, IMTC filed a complaint against Chiron, Johnson & Johnson 
("J&J"), Institut Pasteur and Abbott Laboratories with the European 
Commission in Belgium ("EC"), alleging violations of Articles 85 and 86 of 
the EC Treaty and Articles 53 and 54 of the European Economic Area 
Agreement concerning licensing practices under Chiron's '511 patent and its 
European Patent equivalent, the '216 patent.  The EC complaint charges that 
Chiron and J&J have entered into license agreements with competitors which 
constitute market sharing and price fixing in the HCV and other blood testing 
fields, thus abusing an allegedly dominant position in the HCV market.  IMTC 
claims that Chiron's HCV patents constitute an "essential facility" which 
must be "freely licensed on reasonable commercial terms."  The EC complaint 
seeks, INTER ALIA, interim measures in the form of a compulsory license from 
Chiron to IMTC applicable in all European Union member states for the 
manufacture of HCV antigen and nucleic acids for immunodiagnostic reasons.  
The EC has taken no formal action on IMTC's complaint to date.  Chiron 
believes that the IMTC complaint is without merit.

  UNITED BIOMEDICAL, INC..  On May 4, 1994, Chiron instituted summary legal 
proceedings against Organon Teknika, B.V., Akzo Pharma, B.V., subsidiaries of 
Akzo N.V. (all subsidiaries of Akzo N.V. (collectively referred to as 
"Organon")), and United Biomedical, Inc. ("UBI"), the supplier of Organon's 
HCV antigens and kits, in the District Court of The Hague, The Netherlands, 
alleging infringement of the '216 patent as a result of the defendants' 
manufacture and sale of HCV immunoassay kits.  On July 22, 1994, Chiron was 
granted a cross-border preliminary injunction against further infringement, 
including sale of the UBI kit, by Organon in Austria, Belgium, Switzerland, 
Germany, Spain, France, Italy, Liechtenstein, Luxembourg, The Netherlands and 
Sweden.  Organon and UBI appealed the injunction.  The '216 patent is a 
counterpart of the British '511 patent, described under the heading 
INTERNATIONAL MUREX TECHNOLOGIES CORPORATION above.  Chiron, Ortho, Ortho, 
Ltd. and Organon settled all European HCV litigation on October 9, 1995, and 
Chiron and Ortho were compensated for past infringement. UBI did not 
participate in the settlement and has been ordered to pay Ortho Ltd. damages 
by the U.K. Court of Appeal, along with Murex, as described above. A damages 
inquiry has not yet been scheduled.


                                       12


<PAGE>

  SICOR.  As of April 10, 1996, Chiron entered into a settlement agreement 
which will result in dismissal of a 1991 lawsuit filed in the United States 
District Court for the Northern District of California against Cetus Oncology 
Corporation ("Cetus"), Ben Venue Laboratories, Inc. ("Ben Venue"), Cetus Ben 
Venue Therapeutics ("CBVT")  and Erbamont, Inc. ("Erbamont") and its 
affiliates by Alco Chemicals, Ltd. ("Alco") and Sicor, S.p.A. ("Sicor").  The 
Sicor complaint alleged breach of a CBVT contract to purchase bulk 
doxorubicin from Sicor, as well as antitrust violations and interference with 
contract and prospective advantage, and sought unspecified damages.  Cetus 
denied any entitlement to recovery in this lawsuit and had filed 
counterclaims.  In February 1995, Sicor and Alco filed a further action in 
the United States District Court for the Northern District of California and 
an arbitration  against CBVT for amounts allegedly owed by CBVT to Sicor and 
Alco for the supply of doxorubicin, plus interest and attorneys' fees.  Under 
the April 10, 1996 settlement agreement, each of the matters described in 
this paragraph will be dismissed with prejudice.

  SMITHKLINE BEECHAM BIOLOGICALS S.A. ("SKB").  Chiron owns issued European 
Patent No. 0 120 551 ("the '551 patent") which relates to yeast expression 
vectors containing foreign gene sequences including, for example, Hepatitis B 
virus surface antigen, and expression methods thereof.  Chiron filed a 
divisional application, European Patent No. 0 460 716 ("the '716 patent"), 
which will issue soon and which contains related claims. Chiron believes that 
SKB's Engerix-B-Registered Trademark-vaccine against Hepatitis B virus 
infringes the '551 patent and will infringe the '716 patent once it issues.  
In April 1996, SKB filed suit against Chiron in the Tribunal of First 
Instance of Brussels seeking a declaration that the '551 and '716 Patents 
are:  (1) null and void in Belgium; and (2) not infringed by SKB in a variety 
of European countries.  SKB also filed an application for preliminary relief 
which, if granted, would suspend the effects of the '551 and '716 patents and 
would allow SKB to continue production and commercialization of 
Engerix-B-Registered Trademark- in all designated countries until a decision 
on validity and infringement is rendered.  A hearing on SKB's preliminary 
relief application is expected to be held in September 1996.  Chiron believes 
that both the '551 and '716 patents are valid and infringed and that it has 
significant defenses to SKB's claims.

  STOCKHOLDER LITIGATION.  In November 1994, Chiron, its directors, and 
certain of its officers were sued in three essentially identical lawsuits 
filed as class actions on behalf of Chiron stockholders, alleging that the 
directors had violated their fiduciary duty by failing to maximize 
stockholder value in connection with the series of transactions affected with 
Ciba-Geigy, Ltd. which were announced on November 20, 1994, by, among other 
things, not taking all possible steps to seek out and encourage the best 
offer for the Company once the Company had been put in play. Two of the 
actions filed respectively on November 14, 1994 and November 22, 1994 (HANNA 
V. CHIRON CORP., ET AL., C.A. No. 13874, and DEZUBE V. CHIRON CORPORATION ET 
AL.,  C.A. 13896) were filed in the Court of Chancery of the State of 
Delaware in and for New Castle County.  These complaints seek injunctive 
relief, rescission and attorneys' fees.  Plaintiff in the HANNA action 
additionally seeks damages in an unspecified amount.  Plaintiff in the DEZUBE 
action additionally seeks an accounting.  The complaints have been answered 
by all defendants, who deny the material allegations of the complaints. The 
third action was filed in the Superior Court of California, Alameda County, 
Northern Division, on December 1, 1994 (PERERA ET AL., V. CHIRON CORPORATION 
ET AL., C.A. No. 744522-2).  Plaintiff sought injunctive and declaratory 
relief, and an accounting, costs and disbursements, including attorneys' and 
experts' fees, and other relief.

   On October 17, 1995, the PERERA plaintiffs commenced a new action (the 
"Federal Action") in the United States District Court for the Northern 
District of California, against the same defendants and Ciba-Geigy, Ltd., 
Ciba-Geigy's Chairman Alex Krauer, Ciba-Geigy Corporation, and Ciba Biotech 
Partnership, Inc. (collectively, the "Ciba Defendants").  The Federal Action 
asserts both state and federal claims, including a claim under Sections 
10(b), 14(d) and 14(e) of the Securities Exchange Act of 1934, and seeks 
damages and injunctive relief.  On October 23, 1995,


                                       13


<PAGE>

in light of the filing of the Federal Action, the PERERA action was dismissed 
by stipulation of the parties.

  Plaintiffs and all of the defendants other than the Ciba Defendants have 
entered into an agreement to settle the Federal Action on a class-wide basis, 
subject to approval by the Court.  Under the terms of that settlement 
agreement, Chiron will pay plaintiffs' counsel up to $300,000 in attorneys 
fees and expenses, as may be awarded by the Court, and will pay the costs of 
class notice.  Chiron has no other financial obligations under the settlement 
agreement, which also contemplates that the HANNA and DEZUBE actions will be 
dismissed as moot following approval of the settlement and dismissal of the 
Federal Action. At a status conference held in March 1996, the District Court 
preliminarily approved the settlement.  The class has received notice of the 
settlement, and a final approval hearing has been scheduled for May 21, 1996.

  The Company is party to certain other lawsuits, each of which is described 
in Item 3, Legal Proceedings, on page 10 of the Company's report on Form 10-K 
for the period ended December 31, 1995, and as to which there have been no 
material developments since such Form 10-K was filed.


                                       14


<PAGE>


                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS



OVERVIEW

  THE DISCUSSION BELOW CONTAINS FORWARD-LOOKING STATEMENTS THAT INVOLVE RISKS
AND UNCERTAINTIES RELATING TO THE FUTURE FINANCIAL PERFORMANCE OF CHIRON
CORPORATION (THE "COMPANY" OR "CHIRON"), AND ACTUAL EVENTS OR RESULTS MAY DIFFER
MATERIALLY.  IN EVALUATING SUCH STATEMENTS, STOCKHOLDERS AND INVESTORS SHOULD
SPECIFICALLY CONSIDER THE VARIOUS FACTORS IDENTIFIED BELOW AND UNDER THE CAPTION
"FACTORS THAT MAY AFFECT FUTURE OPERATING RESULTS" WHICH COULD CAUSE ACTUAL
RESULTS TO DIFFER MATERIALLY FROM THOSE INDICATED BY SUCH FORWARD-LOOKING
STATEMENTS.

  Chiron is a science-driven healthcare company that applies biotechnology and
other techniques of modern biology and chemistry to develop, produce and sell
products intended to improve the quality of life by diagnosing, preventing and
treating human disease.  Chiron participates in four human healthcare markets: 
diagnostics, including blood screening tests, automated immunodiagnostic
systems, critical blood analyte systems and new quantitative probe tests;
therapeutics, with an emphasis on oncology, serious infectious diseases and
critical care diseases; adult and pediatric vaccines; and ophthalmic surgical
products, including instruments and devices used for the surgical correction of
vision and an intraocular implant to deliver drugs into the eye.  Chiron also
develops or acquires new technologies, employing these technologies to discover
new products for the Company or for its partners.

RESULTS OF OPERATIONS

REVENUES

  The Company's revenues are derived from a variety of sources, including
product sales, joint business arrangements, collaborative agreements and product
royalty agreements.  Product sales, Chiron's largest revenue category, consists
of the following product lines for each of the three-month periods ended March
31: 

                                            1996       1995
                                        ---------    --------
                                             (IN THOUSANDS)

  Diagnostic products                   $ 134,349    $127,440
  Ophthalmic products                      44,941      24,320
  Vaccine products                         20,834      15,844
  Betaseron-Registered Trademark-          20,892       1,817
  Oncology products                        16,148      12,767
  Other products                            1,095       1,721
                                        ---------    --------
                                        $ 238,259    $183,909
                                        ---------    --------

  Diagnostic product sales include direct sales and sales-type leases of fully-
automated, random-access immunodiagnostic (ACS-TM-) testing systems and reagents
for these systems, as well as sales of critical blood analyte systems (CBA-TM-),
clinical chemistry products and manual immunodiagnostic systems.  Sales of
diagnostic systems often include the sale of service and maintenance contracts. 
Revenue from these contracts is included in product sales revenue and is
recognized ratably over the life of the contracts.  The increase in diagnostic
product sales in the first quarter of 1996 over the first quarter of 1995 is
primarily due to growth in immunodiagnostic product sales resulting from
increased penetration of the instruments market and increased sales volume
resulting from an expanded menu on the ACS-TM- system.


                                       15


<PAGE>

  Sales of ophthalmic products increased between periods due to significant
growth in intraocular lens sales as a result of the March 1995 acquisition of
the surgical product division of IOLAB from Johnson & Johnson, and the
continuing evolution in the marketplace favoring foldable lens technology-based
products.  Phacoemulsification and viscoelastic product sales also increased
during the first quarter of 1996 over the same period of the preceding year.  In
addition, during the first quarter of 1996, Chiron received approval by the U.S.
Food and Drug Administration ("FDA") to market its Vitrasert-TM- Implant
(Cytovene-Registered Trademark-; Roche Laboratories) product, the first drug
delivery system to provide local, sustained therapy for the eye.  The Company
recorded $1.0 million of Vitrasert-TM- Implant sales during the first quarter of
1996.

  Vaccine product sales consist of sales of pediatric and adult vaccines
primarily in Italy and to public health organizations by Chiron's Biocine S.p.A.
subsidiary ("Chiron Biocine").  Chiron Biocine's vaccine products include
Acelluvax-Registered Trademark-, a recombinant acellular pertussis vaccine;
Agrippal-Registered Trademark-, a flu vaccine; and Polioral-TM-, an oral polio
vaccine.  Sales of Chiron Biocine's flu vaccine are seasonal, with strong sales
generally occurring during the pre-flu season in the fourth quarter of the year.
The increase in Chiron Biocine's vaccine product sales in the first quarter of
1996 over that of 1995 is due to Chiron Biocine's expansion into new export
markets for its polio vaccine as well as new sales of Chiron Biocine's combined
diphtheria, tetanus and acellular pertussis vaccine in Italy.

  Under the terms of a development and supply agreement with Schering AG,
Germany ("Schering"), and its U.S. affiliate, Berlex Laboratories, Inc.
("Berlex"), Chiron manufactures Betaseron-Registered Trademark- (interferon
beta-1b) for Berlex.  Under the terms of the agreement, Chiron earns a partial
payment for Betaseron-Registered Trademark- upon shipment to Berlex and a
subsequent payment for Betaseron-Registered Trademark- upon Berlex's net sales
of the product. The increase in Betaseron-Registered Trademark- product sales
during the first three months of 1996 over the same period in 1995 is due, in
part, to an increase in commercial vials shipped to Berlex in 1996 as compared
to 1995.  Because Berlex had previously built adequate inventory levels to
satisfy patient demand, Chiron did not ship any commercial-use vials during the
first three months of 1995.  The increase in Betaseron-Registered Trademark-
product sales during 1996 is also due to additional revenues recorded by Chiron
from Berlex's net sales of Betaseron-Registered Trademark- and the receipt in
1996 of $2.8 million of revenues for Betaseron-Registered Trademark- shipped to
Berlex and distributed by Schering for use in an early access program for
European patients prior to commercial approval in Europe.

  Future levels of Chiron's Betaseron-Registered Trademark- shipments will
depend upon the rate at which new patients are enrolled from existing and future
markets, the extent to which patients, once enrolled, remain compliant with the
prescribed treatment regimen and continue to regularly receive Betaseron-
Registered Trademark-, and the timing of approval and market launch of competing
products, including another beta interferon product.  Chiron anticipates that
1996 shipments of Betaseron-Registered Trademark- will be lower than 1995
levels, however, reported revenue from Betaseron-Registered Trademark- will be
approximately equal to, or slightly less than, that of 1995.  Based upon the
level of inventories carried by Berlex, the timing of future shipments to Berlex
in 1996 may vary by quarter.

  Sales of oncology products, principally Proleukin-Registered Trademark-
(aldesleukin, interleukin-2), increased during the first three months of 1996
over the same period in 1995 primarily due to an increase in Proleukin-
Registered Trademark- quantities sold of 21 percent and 23 percent,
respectively, in the European and domestic markets.  Proleukin-Registered
Trademark- average net unit sales prices remained constant in Europe but
increased by 13 percent in the domestic market between 1996 and 1995.

  The Company markets many of its commercial products internationally.  As a
result, product revenues in almost all product lines are affected by fluctuating
foreign currency exchange rates.  Foreign product sales were approximately
$133.6 million and $117.5 million for the three-month periods ended March 31,
1996 and 1995,  respectively.  International sales of diagnostic and vaccine
products accounted for the majority of the increase in foreign product sales
between periods.  For the three-month period ended March


                                       16


<PAGE>

31, 1996, approximately 56 percent of Chiron's product sales were denominated 
in foreign currencies. Although, for the first quarter of 1996, the net 
effect of changing foreign currency exchange rates did not significantly 
impact product sales when compared with 1995, changing currency exchange 
rates have had, and will continue to have, an impact on Chiron's results.  
The Company's other revenues, discussed below, are largely denominated in 
U.S. dollars but are impacted by our joint partners' and collaborators' 
non-U.S. operations.

  As of March 31, 1996, Chiron owned a 50 percent interest in two joint
businesses: a joint diagnostic business with Ortho Diagnostic Systems, Inc.
("Ortho") and a generic cancer chemotherapeutics business with Ben Venue
Laboratories, Inc. ("Ben Venue").  Chiron's one-half interest in the pretax
operating earnings of its joint diagnostic business with Ortho represents the
largest component of joint business revenues.  The joint business receives a
royalty from Abbott Laboratories ("Abbott") for Abbott's sales of hepatitis C
virus ("HCV") tests which use the Chiron technology and which compete directly
with tests marketed by Ortho.  Results from the joint venture are recorded by
Chiron on a one-month lag based upon estimates supplied by Ortho and are subject
to a final annual accounting during the first quarter of the subsequent year. 
Chiron's share of the pretax earnings of the joint business increased by $4.4
million in the first quarter of 1996 as compared to 1995, primarily due to
adjustments arising from the final 1995 accounting.  In addition, the joint
venture experienced a growing volume of HCV tests sold to overseas markets and
increased royalties received from Abbott's sales of HCV tests.  These increases
more than offset a reduction between periods in gross profit margins and an
increase in research and development spending.

  Results for Chiron's equity interest in the generic cancer chemotherapeutics
business increased by $0.9 million in the first quarter of 1996 as compared to
the first quarter of  1995.  Under the terms of a purchase agreement, effective
May 1, 1996, Chiron agreed to sell its one-half interest in the generic cancer
chemotherapeutics business to Ben Venue.  Chiron expects to record a gain from
the sale of approximately $10.0 million to $12.0 million during the second
quarter of 1996.

  Collaborative agreement revenues consist of fees received for research
services as they are performed, fees received for completed research or
technology, fees received upon attainment of benchmarks specified in the related
research agreements, and proceeds of sales of biological materials to research
partners for clinical and preclinical testing.  Collaborative agreement revenues
for the first quarter of 1996 increased by $25.8 million compared to 1995.  A
portion of this increase is comprised of $16.0 million received from Ciba-Geigy
Limited of Basel, Switzerland ("Ciba") under the terms of a research funding
agreement.   In 1995, Ciba agreed to provide $250 million (which may be
increased up to $300 million subject to certain conditions) in support of
research at Chiron.  Chiron anticipates continued utilization of the research
funding provided by Ciba under the terms of the research funding agreement.

  Also contributing to the increase in collaborative agreement revenues in the
first quarter of 1996 over 1995, as discussed further in Note 4 of Notes to
Consolidated Financial Statements, are initial revenues of $7.5 million earned
from Japan Tobacco Inc. ("JT").  In March 1996, the Company and JT entered into
a technology transfer and development agreement whereby the pharmaceutical
division of JT acquired a non-exclusive, perpetual license to apply certain of
Chiron's combinatorial chemistry technologies in JT's research and product
development programs.

  Other revenues consist principally of product royalties, government grants 
and sales fees earned by the Company for sales and marketing services 
rendered on behalf of its generic chemotherapeutics joint venture and on 
behalf of Ciba-Geigy.  Other revenues increased in the first quarter of 1996 
primarily due to increased sales fees received from Ciba for sales of 
Aredia-Registered Trademark- (pamidronate disodium) and increased nucleic 
acid probes reference laboratory service revenues.


                                       17


<PAGE>

COSTS AND EXPENSES

  Cost of sales increased consistent with the increase in product sales between
years.  The gross profit margin increased to 57 percent in the first quarter of
1996 from 51 percent in 1995.  The gross profit margin was affected negatively
during the first quarter of 1995 due to additional operating expenses associated
with the Company's Puerto Rico manufacturing facility which was idled during
1995 as well as the lack of commercial shipments of Betaseron-Registered
Trademark-.  During the first quarter of 1996, Chiron's gross profit margin
improved when compared to 1995 as a result of increased commercial shipments of
Betaseron-Registered Trademark- as well as additional revenues received from
Berlex's net sales of Betaseron-Registered Trademark-.  The improvement in the
gross profit margin in the first quarter of 1996 over 1995 is also due to
increased margins on ophthalmic product sales of intraocular lenses, as well as
improved margins on diagnostic product sales of critical blood analyte systems. 
Gross margin percentages may fluctuate significantly in future periods as the
Company's product mix continues to evolve and as the costs of new facilities are
included in cost of goods sold.

  Research and development expenses decreased in the first quarter of 1996 as
compared to 1995 primarily due to the following items, recognized as research
and development expense pursuant to collaborative arrangements with other
pharmaceutical and biotechnology companies in 1995:

  -  The Company paid $8.8 million to G.D. Searle & Co. for the development and
     marketing of Tissue Factor Pathway Inhibitor products; 
  -  Chiron made a $3.5 million milestone payment to DepoTech Corporation
     ("DepoTech") for the research, development and marketing of products
     incorporating certain drug delivery technologies developed by DepoTech; 
  -  An initial license payment of $2.5 million was paid by Chiron to
     Progenitor, Inc. ("Progenitor"), pursuant to a collaboration for the
     development and commercialization of therapeutic and vaccine products
     incorporating Progenitor's proprietary gene therapy technology;
  -  The Company reached an agreement with Genelabs Technologies, Inc.
     ("Genelabs"), whereby Chiron and Genelabs cross-licensed certain rights to
     hepatitis C virus, hepatitis G virus, human T-cell leukemia virus - I and
     human T-cell leukemia virus - II diagnostic tests.  Of an initial payment
     of $5.0 million, approximately $4.2 million was recognized as expense in
     the first quarter of 1995; 
  -  Chiron made a $5.0 million initial payment to New York University ("NYU")
     under an agreement whereby Chiron and its sublicensee, Ciba, acquired
     certain rights to NYU's optical gene mapping technology.

  Partially offsetting these reductions in research and development expense in
1996 was an increase of $2.4 million primarily related to Chiron's effort to
obtain FDA approval of its combined diphtheria, tetanus and acellular pertussis
vaccine as well as an increase of $5.0 million due to the Company's acquisition
of Viagene, Inc. ("Chiron Viagene") in the third quarter of 1995.  Chiron
Viagene is engaged in the discovery and development of gene transfer drugs for
the treatment of severe viral infections, cancers and other diseases.

  Selling, general and administrative expenses ("SG&A expenses") increased in
the first quarter of 1996 over 1995 primarily due to additional sales and
marketing efforts related to the entrance into new markets and the expansion of
existing markets for immunodiagnostic products.  SG&A expenses in the ophthalmic
business were also higher in 1996 due to the acquisition of IOLAB and increased
costs related to the ophthalmic sales force, resulting from the integration of
Chiron's operations with IOLAB.  Selling and marketing expenses represent the
largest portion of total SG&A expenses, as Chiron devoted significant resources
to support sales volumes in the diagnostic, ophthalmic, therapeutic and vaccine
product lines.


                                       18


<PAGE>

  The write-off of purchased in-process technology in 1995 includes $220.4
million for the acquisitions from Ciba of Ciba Corning Diagnostics Corp. ("CCD")
and Ciba's interests in Biocine S.p.A. and The Biocine Company ("Chiron Biocine
Company"), and $10.3 million for the acquisition of IOLAB.

  In 1995, costs related to the Ciba transaction consist primarily of employee
payments and related tax liabilities and legal and investment advisor fees.

  Restructuring and reorganization costs in 1995 represent certain accrued
costs of integrating the acquired businesses with Chiron's existing businesses,
costs related to the idling of the Company's Puerto Rico manufacturing facility
and the scaling-back of manufacturing operations at the Company's Amsterdam
facility, and costs related to the write-down of duplicate facilities at the
Company's Emeryville, California, headquarters. Also included was a charge
related to the change in plans to expand the  Company's Emeryville research and
administrative facilities.

OTHER ITEMS

  Other expense, net, consists primarily of investment income on the Company's
cash and investment balances and interest expense on convertible subordinated
debentures, other debt and capital leases. Other expense, net, increased between
the first quarter of 1996 and 1995 primarily as a result of reduced investment
income arising from lower cash balances in the Company's investment portfolio.

  The provision for income taxes in 1996 is based on an estimated annual
effective income tax rate.  The provision for income taxes in the first quarter
of 1995 was comprised primarily of foreign taxes on certain foreign operations
of the Company.  Substantially all of the write-off of purchased in-process
technologies was not deductible for income tax purposes and thus did not create
a tax benefit in 1995.

LIQUIDITY AND CAPITAL RESOURCES

  Chiron's capital requirements are funded from public and private sales of
equity and convertible debt and cash provided by operations.  In addition to
these sources of capital, future capital requirements may be financed through a
combination of debt, utilization of research funding from Ciba, possible off-
balance-sheet financing (such as R&D limited partnerships and operating leases),
cash generated from operations and the use of existing cash and investment
balances.  Until required for operations, Chiron's policy is to keep its cash
and investments in a diversified portfolio of investment grade financial
instruments, including money market instruments, corporate notes and bonds,
government or government agency securities, or other debt securities.  By
policy, the amount of credit exposure to any one institution is limited.  These
investments are generally not collateralized and primarily mature within three
years.  Investments with maturities in excess of one year are presented on the
balance sheet as noncurrent investments.  To the extent that Chiron has balance
sheet exposure resulting from completed transactions denominated in a foreign
currency, the Company's policy is to mitigate exposure to exchange rate
fluctuations by entering into forward currency contracts.  These contracts are
settled quarterly.  At March 31, 1996, the Company had outstanding forward
currency contracts totaling approximately $67.6 million.  In addition, the
Company has commenced a program, consisting of purchased average rate options,
designed to reduce the impact of fluctuating foreign currency exchange rates on
the results of anticipated transactions.  At March 31, 1996, the Company had
outstanding purchased average rate option contracts totaling approximately $57.3
million.

  In future periods, Chiron expects to incur substantial capital spending
consistent with the Company's commitment to expand its manufacturing capacity. 
During the first quarter of 1996, Chiron continued the expansion of certain
vaccine production facilities in Italy as well as the planned expansion of its
research and development and certain administrative facilities in Emeryville. 
The expansion of research and


                                       19


<PAGE>

development and certain administrative facilities in Emeryville is projected 
to occur in stages over the next thirty years. The Company anticipates 
entering into leasing arrangements which will provide third-party funding for 
a significant portion of the Emeryville expansion.

  On February 17, 1996, Chiron and Behringwerke AG, a subsidiary of Hoechst AG,
reached an agreement whereby Chiron will purchase a 49 percent interest in the
human vaccine business of Behringwerke AG for Deutsche mark 171.5 million in
cash.  Consummation of the transaction is subject to certain conditions,
including regulatory approvals and customary conditions prior to closing.  The
Company anticipates that the transaction will close prior to the 1996 year-end.

  Chiron's liquidity may be further impacted in future periods by its decision
to fund its share of expenses in certain of its joint ventures and collaboration
arrangements.  Over the next several years, Chiron anticipates funding
collaborations with a number of its research partners, and may make additional
equity investments in  collaborative partners.  In addition, during the first
quarter of 1996, Chiron entered into a binding heads of agreement with a third
party pursuant to which Chiron expects to invest approximately $30.0 million for
a combination of preferred stock, debt and prepaid services.  Consummation of
this transaction is subject to the negotiation and execution of definitive
agreements, as well as regulatory approvals and customary closing conditions.

  During the three months ended March 31, 1996, cash and cash equivalents
increased by $10.5 million. Of this amount, $5.3 million was provided by the
Company's operating activities, compared to $6.8 million used in operating
activities in the first quarter of 1995.

  Investing activities consumed cash of $18.2 million during the first three
months of 1996, versus $55.4  million in 1995.  The first quarter of 1996
included net sales of marketable debt securities of $14.8 million compared to
net sales of marketable debt securities of $67.0 million in 1995.  Capital
expenditures on plant and equipment were $31.8 million during the first three
months of 1996 and $28.6 million in 1995.  During the first quarter of 1995,
Chiron received $14.2 million, net of cash paid, through its acquisition of CCD,
Biocine S.p.A. and Chiron Biocine Company.  The first quarter of 1995 also
included the acquisition of IOLAB for $95.0 million in cash.

  Cash provided by financing activities of $23.3 million in the first quarter
of 1996 largely reflects cash proceeds of $16.1 million and $3.9 million,
respectively, received from the exercise of stock options and for issuance of
stock under the Company's employee stock purchase plan as well as cash received
from short-term borrowings of $5.6 million.  Cash provided by financing
activities of $68.4 million in the first three months of 1995 includes
approximately $43.0 million primarily related to borrowings under a line of
credit arrangement, and a capital contribution of $24.8 million pursuant to the
1995 agreements with Ciba.  

  Chiron believes that its cash and cash equivalents and short and long-term
investments, together with funds provided by operations and the funding
arrangements discussed above will be sufficient to meet its cash requirements
during the upcoming twelve months and through the foreseeable future.

FACTORS THAT MAY AFFECT FUTURE OPERATING RESULTS

  Chiron wishes to caution stockholders and investors that the following
important factors, among others, in some cases have affected, and in the future
could affect, Chiron's actual results and could cause Chiron's actual
consolidated results for the second quarter of 1996, and beyond, to differ
materially from those expressed in any forward-looking statements made by, or on
behalf of, Chiron.  The statements under this caption are intended to serve as
cautionary statements within the meaning of the Private Securities Litigation
Reform Act of 1995.  The following information is not intended to limit in any
way the


                                       20


<PAGE>

characterization of other statements or information under other captions as 
cautionary statements for such purpose:

  -  Delays, difficulties or failure in obtaining regulatory approval (including
     approval of its facilities for production) for the Company's products,
     including delays or difficulties in development because of insufficient
     proof of safety or efficacy.
  -  Inability to maintain or initiate third party arrangements which generate
     revenues, in the form of license fees, research and development support,
     royalties and other payments, in return for rights in technology or
     products under development by the Company.
  -  Delays or difficulties in developing and acquiring technology and technical
     and managerial personnel to manufacture and/or deliver the Company's
     products in commercial quantities at reasonable costs and in compliance
     with applicable quality assurance and environmental regulations and
     governmental permitting requirements.
  -  Difficulties in obtaining key raw materials and supplies for the
     manufacture of the Company's products.
  -  Increased and irregular costs of development, regulatory approval,
     manufacture, sales, and marketing associated with introduction of novel
     products.
  -  Difficulties in launching or marketing the Company's products, many of
     which are novel products based on biotechnology, and unpredictability of
     customer acceptance of such products.
  -  The ability and willingness of customers to substitute competitive products
     for the Company's products once other products for similar indications are
     approved for marketing.
  -  Continued flattened growth rate in the Betaseron-Registered Trademark-
     customer base in the U.S.; the extent to which patients, once enrolled,
     remain compliant with the prescribed treatment regimen and continue to
     regularly receive Betaseron-Registered Trademark-; timing, approval and
     market launch of competing products, including another beta interferon
     product; pricing, promotional and marketing decisions by the Company's
     partner, Schering.
  -  Continued lower product margins resulting from the Chiron-Ortho joint
     business' renegotiated contract with the American Red Cross; changes in the
     product mix whereby the proportion of higher margin HCV tests sold relative
     to other lower margin products is less; continued increases in research and
     development spending in order to develop new products and increase market
     share; introduction of competing tests by unlicensed third parties.
  -  Continued or increased pressure to reduce selling prices of the Company's
     products.
  -  Underutilization of the Company's existing or new manufacturing facilities
     or of any facility expansions, resulting in production inefficiencies and
     higher costs; start-up costs and inefficiencies and delays and increased
     depreciation costs in connection with the start of production in new plants
     and expansions.
  -  The cost of acquiring in-process technology, either by license,
     collaboration or purchase of another entity.
  -  Amount and rate of growth in Chiron's selling, general and administrative
     expenses; and the impact of unusual or infrequent charges resulting from
     Chiron's ongoing evaluation of its business strategies and organizational
     structures, including the continued costs of integration of newly acquired
     businesses.
  -  The acquisition of fixed assets and other assets, including inventories and
     receivables; and the making or incurring of any expenditures and expenses,
     including, among others, depreciation and research and development
     expenses; any revaluation of assets, including, among others, the Company's
     investments in the equity securities of other companies with whom it
     collaborates, or related expenses, and the amount of, and any changes to,
     tax rates.
  -  The ability or inability of Chiron to obtain, or hedge against, foreign
     currency, foreign exchange rates and fluctuations in those rates.


                                       21


<PAGE>

  -  The costs and other effects of legal and administrative cases and
     proceedings (whether civil, such as product-related or environmental, or
     criminal); settlements and investigations; developments or assertions by or
     against Chiron relating to intellectual property rights and licenses; the
     issuance and use of patents and proprietary technology by Chiron and its
     competitors, including the possible negative effect on the Company's
     ability to develop, manufacture and sell its products in circumstances
     where it is unable to obtain licenses to patents which may be required for
     such products.
  -  Failure of corporate partners to commercialize successfully the Company's
     products or to retain and expand the markets served by the commercial
     collaborations; conflicts of interest, priorities and commercial strategies
     which may arise between the Company and such corporate partners.


                                       22


<PAGE>

ITEM 1. LEGAL PROCEEDINGS

     Information responding to Item 1 is set forth in Part 1., Item 1., Notes 
to Consolidated Financial Statements, Note 5. "Contingencies," which 
information is incorporated herein by reference.

ITEM 2. CHANGES IN SECURITIES.  None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES.  None.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.  None.

ITEM 5. OTHER INFORMATION.  None.

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K.

        (a) EXHIBITS.

<TABLE>
<CAPTION>

          EXHIBIT
          NUMBER                 EXHIBIT
           <S>    <C>
           2.01   Agreement and Plan of Merger, made as of February 6, 1987, incorporated by reference to
                  Exhibit 2.01 of the Registrant's Form 10-Q report for the period ended September 30, 1994.

           3.01   Restated Certificate of Incorporation of the Registrant, dated August 18, 1987,
                  incorporated by reference to Exhibit 3.01 of the Registrant's Form 10-K report for fiscal
                  year 1991.
     
           3.02   Certificate of Amendment of Restated Certificate of Incorporation of the Registrant, dated
                  December 12, 1991, incorporated by reference to Exhibit 3.01 of the Registrant's Form 10-K
                  report for fiscal year 1991.
     
           3.03   Bylaws of the Registrant, as amended, incorporated by reference to Exhibit 3.03 of the
                  Registrant's Form 10-K report for fiscal year 1994.
     
           4.01   Indenture, dated as of May 21, 1987, between Cetus Corporation and Bankers Trust Company,
                  Trustee, incorporated by reference to Exhibit 4.01 of the Registrant's Form 10-Q report for
                  the period ended September 30, 1994.

           4.02   First Supplemental Indenture, dated as of December 12, 1991, by and among Registrant,
                  Cetus Corporation, and Bankers Trust Company, incorporated by reference to Exhibit 4.02 of
                  the Registrant's Form 10-K report for fiscal year 1992.
     
           4.03   Indenture, dated as of November 15, 1993, between Registrant and The First National Bank
                  of Boston, as Trustee, incorporated by reference to Exhibit 4.03 of the Registrant's Form
                  10-K report for fiscal year 1993.


                                       23


<PAGE>

           4.04   Rights Agreement, dated as of August 25, 1994, between the Company and Continental Stock
                  Transfer & Trust Company, which includes the Certificate of Designations for the Series A
                  Junior Participating Preferred Stock as Exhibit A, the form of Right Certificate as
                  Exhibit B and the Summary of Rights to Purchase Preferred Shares as Exhibit C,
                  incorporated by reference to Exhibit 4.04 of the Registrant's current report on Form 8-K
                  dated August 25, 1994.

           4.05   Amendment No. 1 to Rights Agreement dated as of November 20, 1994, between Chiron
                  Corporation and Continental Stock Transfer & Trust Company, incorporated by reference to
                  Exhibit 4.05 of the Registrant's current report on Form 8-K, dated November 20, 1994.
     
           4.06   $1,000,000 County of Lorain, Ohio Variable Rate Industrial Revenue Bonds dated as of July
                  1, 1984, due July 1, 2014, incorporated by reference to Exhibit 4.06 of the Registrant's
                  Form 10-Q report for the period ended April 2, 1995. The Registrant agrees to furnish to
                  the Commission upon request a copy of such agreement which it has elected not to file
                  under the provisions of Regulation 601(b)(4)(iii).
     
           4.07   $1,000,000 Walpole Industrial Development Authority 6.75% Industrial Revenue Bonds dated
                  as of July 1, 1979, due July 1, 2004, incorporated by reference to Exhibit 4.07 of the
                  Registrant's Form 10-Q report for the period ended April 2, 1995. The Registrant agrees to
                  furnish to the Commission upon request a copy of such agreement which it has elected not
                  to file under the provisions of Regulation 601(b)(4)(iii).
     
          10.01   Lease between Registrant and BGR Associates, a California limited partnership, dated May
                  26, 1989, incorporated by reference to Exhibit 10.01 of the Registrant's Form 10-Q report
                  for the period ended September 30, 1994.

          10.02   First Amendment to Lease between Registrant and BGR Associates, a California limited
                  partnership, incorporated by reference to Exhibit 10.02 of the Registrant's Form 10-K
                  report for fiscal year 1995.

          10.03   Lease between Registrant and BGR Associates II, a California limited partnership, dated
                  May 26, 1989, incorporated by reference to Exhibit 10.02 of the Registrant's Form 10-Q
                  report for the period ended September 30, 1994.
    
          10.04   First Amendment to Lease between Registrant and BGR Associates II, a California limited
                  partnership, dated as of March 15, 1995, incorporated by reference to Exhibit 10.04 of the
                  Registrant's Form 10-K report for fiscal year 1995.


                                       24


<PAGE>

          10.05   Agreement and Plan of Merger dated as of April 23, 1995 between Viagene, Inc., a Delaware
                  corporation, and Chiron Corporation, incorporated by reference to Exhibit 10.67 of the
                  Registrant's current report on Form 8-K dated April 24, 1995.

          10.06   Stockholders' Agreement dated as of April 23, 1995 among certain stockholders of Viagene,
                  Inc., a Delaware corporation, and Chiron Corporation, incorporated by reference to Exhibit
                  10.68 of the Registrant's current report on Form 8-K dated April 24, 1995.

          10.07   Stock and Asset Purchase Agreement dated as of March 6, 1995, by and among Johnson &
                  Johnson, a New Jersey corporation, Site Microsurgical Systems, Inc., a Pennsylvania
                  corporation, and Chiron Corporation and Amendment No. 1 to Stock and Asset Purchase
                  Agreement, entered into March 31, 1995 by and among Johnson & Johnson, Site Microsurgical
                  Systems, Inc. and Chiron Corporation, incorporated by reference to Exhibit 10.05 of the
                  Registrant's Form 10-Q report for the period ended April 2, 1995.

          10.08   Revolving Credit Facility dated as of March 24, 1995, between Chiron Corporation and Swiss
                  Bank Corporation, San Francisco Branch, incorporated by reference to Exhibit 10.06 of the
                  Registrant's Form 10-Q report for the period ended April 2, 1995.
    
          10.09   Joint Venture Agreement by and between Chiron Biocine Corporation, a California
                  corporation, and CIBA-GEIGY Biocine Corporation, a Delaware corporation, dated April 15,
                  1987 (with certain confidential information deleted), incorporated by reference to Exhibit
                  10.23 of the Registrant's Form 8 filed with the Commission on February 14, 1992.

          10.10   Amendment to Biocine Joint Venture Agreement by and between Chiron Biocine Corporation, a
                  California corporation, and CIBA-GEIGY Biocine Corporation, a Delaware corporation,
                  effective as of January 1, 1992, incorporated by reference to Exhibit 10.63 to
                  Registrant's Form 10-Q report for the period ended June 30, 1992.

          10.11   Research and License Agreement by and between Registrant and The Biocine Company, a
                  Delaware partnership, dated April 15, 1987 (with certain confidential information
                  deleted), incorporated by reference to Exhibit 10.24 of the Registrant's Form 8 filed with
                  the Commission on February 14, 1992.


                                       25


<PAGE>

          10.12   License Agreement by and between CIBA-GEIGY Biocine Corporation, a Delaware corporation,
                  and The Biocine Company, a Delaware partnership, dated April 15, 1987 (with certain
                  confidential information deleted), incorporated by reference to Exhibit 10.25 of the
                  Registrant's Form 8 filed with the Commission on February 14, 1992.

          10.13   License Agreement by and between Chiron Biocine Corporation, a California corporation, and
                  The Biocine Company, a Delaware partnership, dated April 15, 1987 (with certain
                  confidential information deleted), incorporated by reference to Exhibit 10.26 of the
                  Registrant's Form 8 filed with the Commission on February 14, 1992.
    
          10.14   Letter Agreement signed by CIBA-GEIGY Corporation, dated April 15, 1987, incorporated by
                  reference to Exhibit 10.13 of the Registrant's Form 10-Q report for the period ended
                  September 30, 1994.

          10.15   Agreement between the Registrant and Ortho Diagnostic Systems, Inc., a New Jersey
                  corporation, dated August 17, 1989, and Amendment to Collaboration Agreement between Ortho
                  Diagnostic Systems, Inc. and Registrant, dated December 22, 1989 (with certain
                  confidential information deleted), incorporated by reference to Exhibit 10.14 of the
                  Registrant's Form 10-Q report for the period ended September 30, 1994.

          10.16   License and Supply Agreement between Ortho Diagnostic Systems, Inc., a New Jersey
                  corporation, the Registrant and Abbott Laboratories, an Illinois corporation, dated
                  August 17, 1989 (with certain confidential information deleted), incorporated by reference
                  to Exhibit 10.15 of the Registrant's Form 10-Q report for the quarter ended June 30, 1994.

          10.17   Chiron 1991 Stock Option Plan, as amended, incorporated by reference to Annex 2 of the
                  Registrant's Proxy Statement dated April 11, 1996.*

          10.18   Forms of Option Agreements, Chiron 1991 Stock Option Plan, as amended, incorporated by
                  reference to Exhibit 10.17 of the Registrant's Form 10-K report for fiscal year 1993.*

          10.19   Forms of Option Agreements, Cetus Corporation Amended and Restated Common Stock Option
                  Plan, incorporated by reference to Exhibit 10.33 of Registrant's Form 10-K report for
                  fiscal year 1991.*


                                       26


<PAGE>

          10.20   Forms of Supplemental Letter concerning the assumption of Cetus Corporation options by
                  Chiron, incorporated by reference to Exhibit 10.34 of Registrant's Form 10-K report for
                  fiscal year 1991.*

          10.21   Agreement and Plan of Reorganization dated as of October 11, 1991 by and among the
                  Registrant, Chiron Ophthalmics, Inc., COI Acquisition Corp., IntraOptics, Inc. and James
                  R. Cook, M.D., incorporated by reference to Exhibit 28.2 of Registrant's current report on
                  Form 8-K dated October 14, 1991.

          10.22   Indemnification Agreement between the Registrant and Dr. William J. Rutter, dated as of
                  February 12, 1987 (which form of agreement is used for each member of Registrant's Board
                  of Directors), incorporated by reference to Exhibit 10.21 of the Registrant's Form 10-Q
                  report for the period ended September 30, 1994.
    
          10.23   Stock Purchase Agreement by and between the Registrant and Johnson & Johnson Development
                  Corporation, a corporation organized and existing under the laws of the State of New
                  Jersey, dated as of October 3, 1986, incorporated by reference to Exhibit 10.22 of the
                  Registrant's Form 10-Q report for the period ended September 30, 1994.

          10.24   Ciba Corning Diagnostics Corp. Policies, Guidelines and Procedures regarding Severance
                  Pay, incorporated by reference to Exhibit 10.24 of the Registrant's Form 10-K report for
                  fiscal year 1995.*

          10.25   Form of Debenture Purchase Agreement between the Registrant and CIBA-GEIGY, Limited, a
                  corporation organized and existing under the laws of Switzerland, dated June 22, 1990,
                  incorporated by reference to Exhibit 10.25 of the Registrant's Form 10-K report for fiscal
                  year 1994.

          10.26   Chiron Corporation 1.90% Convertible Subordinated Note due 2000, Series B, incorporated by
                  reference to Exhibit 10.25 of the Registrant's Form 10-K report for fiscal year 1993.
    
          10.27   Investment Agreement dated as of November 20, 1994 among Ciba-Geigy Limited, Ciba-Geigy
                  Corporation, Ciba Biotech Partnership, Inc. and Chiron Corporation, incorporated by
                  reference to Exhibit 10.54 of the Registrant's current report on Form 8-K dated
                  November 20, 1994.


                                       27


<PAGE>

          10.28   Governance Agreement dated as of November 20, 1994 among Ciba-Geigy Limited, Ciba-Geigy
                  Corporation and Chiron Corporation, incorporated by reference to Exhibit 10.55 of the
                  Registrant's current report on Form 8-K dated November 20, 1994.
    
          10.29   Subscription Agreement dated as of November 20, 1994 among Ciba-Geigy Limited, Ciba-Geigy
                  Corporation, Ciba Biotech Partnership, Inc. and Chiron Corporation, incorporated by
                  reference to Exhibit 10.56 of the Registrant's current report on Form 8-K dated
                  November 20, 1994.

          10.30   Cooperation and Collaboration Agreement dated as of November 20, 1994, between Ciba-Geigy
                  Limited and Chiron Corporation, incorporated by reference to Exhibit 10.57 of the
                  Registrant's current report on Form 8-K dated November 20, 1994.
    
          10.31   Registration Rights Agreement dated as of November 20, 1994 between Ciba Biotech
                  Partnership, Inc. and Chiron Corporation, incorporated by reference to Exhibit 10.58 of
                  the Registrant's current report on Form 8-K dated November 20, 1994.

          10.32   Market Price Option Agreement dated as of November 20, 1994 among Ciba-Geigy Limited,
                  Ciba-Geigy Corporation, Ciba Biotech Partnership, Inc. and Chiron Corporation,
                  incorporated by reference to Exhibit 10.59 of the Registrant's current report on Form 8-K
                  dated November 20, 1994.

          10.33   Amendment dated as of January 3, 1995 among Ciba-Geigy Limited, Ciba-Geigy Corporation,
                  Ciba Biotech Partnership, Inc. and Chiron Corporation, incorporated by reference to
                  Exhibit 10.60 of the Registrant's current report on Form 8-K dated January 4, 1995.
    
          10.34   Supplemental Agreement dated as of January 3, 1995 among Ciba-Geigy Limited, Ciba-Geigy
                  Corporation, Ciba Biotech Partnership, Inc. and Chiron Corporation, incorporated by
                  reference to Exhibit 10.61 of the Registrant's current report on Form 8-K dated January 4,
                  1995.

          10.35   Amendment with Respect to Employee Stock Option Arrangements dated as of January 3, 1995
                  among Ciba-Geigy Limited, Ciba-Geigy Corporation, Ciba Biotech Partnership, Inc. and
                  Chiron Corporation, incorporated by reference to Exhibit 10.62 of the Registrant's current
                  report on Form 8-K dated January 4, 1995.*


                                       28


<PAGE>

          10.36   Supplemental Benefits Agreement, dated July 21, 1989, between the Registrant and
                  Dr. William J. Rutter, incorporated by reference to Exhibit 10.27 of the Registrant's Form
                  10-Q report for the period ended September 30, 1994.*

          10.37   Lease dated as of July 1, 1983 between Cetus Corporation and H.B. Chapman, Jr.,
                  incorporated by reference to Exhibit 10.28 of the Registrant's Form 10-Q report for the
                  period ended September 30, 1994.

          10.38   Amendment to Lease, made as of March 20, 1990, amending Lease dated July 1, 1983, between
                  Harold B. Chapman, Jr. and Cetus Corporation, incorporated by reference to Exhibit 10.37
                  of the Registrant's Form 10-Q report for the period ended April 2, 1995.
    
          10.39   Second Amendment to Lease made as of January 1, 1995 between Harold B. Chapman, Jr. and
                  the Registrant, incorporated by reference to Exhibit 10.39 of the Registrant's Form 10-K
                  report for fiscal year 1995.

          10.40   Lease commencing March 1, 1987, between EuroCetus B.V. and the Municipal Land Company of
                  the City of Amsterdam (Translation), incorporated by reference to Exhibit 10.40 of the
                  Registrant's Form 10-K report for fiscal year 1995.

          10.41   Form of Option Agreement (with Purchase Agreements attached thereto) between Cetus
                  Corporation and each former limited partner of Cetus Healthcare Limited Partnership, a
                  California limited partnership, incorporated by reference to Exhibit 10.31 of the
                  Registrant's Form 10-Q report for the period ended September 30, 1994.

          10.42   Form of Option Agreement (with forms of Purchase Agreements attached thereto), dated
                  December 30, 1986, between Cetus Corporation and each former limited partner of Cetus
                  Healthcare Limited Partnership II, a California limited partnership, incorporated by
                  reference to Exhibit 10.32 of the Registrant's Form 10-Q report for the period ended
                  September 30, 1994.

          10.43   Big-O Property Purchase and Leaseback Agreement, dated as of October 31, 1988, between
                  Cetus Corporation and Richard K. Robbins, incorporated by reference to Exhibit 10.33 of
                  the Registrant's Form 10-Q report for the period ended September 30, 1994.


                                       29


<PAGE>

          10.44   Triple Net Lease dated as of January 20, 1989, between Cetus Corporation and BGR
                  Associates III, a California limited partnership, and Marin County Exchange Corporation,
                  incorporated by reference to Exhibit 10.34 of the Registrant's Form 10-Q report for the
                  period ended September 30, 1994.

          10.45   License Agreement between the Registrant and the Board of Trustees of the Leland Stanford
                  Junior University, dated December 15, 1981, incorporated by reference to Exhibit 10.07 of
                  the Registrant's Form 10-Q report for the period ended September 30, 1994.

          10.46   Stock Purchase and Warrant Agreement dated May 9, 1989, between Cetus Corporation and
                  Hoffmann-La Roche Inc., incorporated by reference to Exhibit 10.36 of the Registrant's
                  Form 10-Q report for the period ended September 30, 1994.

          10.47   Letter Agreement, dated as of December 12, 1991, relating to Stock Purchase and Warrant
                  Agreement between Registrant and Hoffmann-La Roche Inc., incorporated by reference to
                  Exhibit 10.59 of Registrant's Form 10-K report for fiscal year 1991.
    
          10.48   Agreement and Plan of Merger dated as of July 21, 1991, by and among Registrant, Chiron
                  Acquisition Subsidiary, Inc. and Cetus Corporation, incorporated by reference to Exhibit
                  28.2 of Registrant's Form 8-K report dated July 22, 1991.
    
          10.49   Letter Agreement dated September 26, 1990 between the Registrant and William G. Green,
                  incorporated by reference to Exhibit 10.41 of the Registrant's Form 10-K report for fiscal
                  year 1992.*
    
          10.50   Letter Agreement dated December 18, 1991 between Registrant and Jack Schuler, incorporated
                  by reference to Exhibit 10.42 of the Registrant's Form 10-K report for fiscal year 1992.*

          10.51   Lease between Sclavo S.p.A. and Biocine Sclavo S.p.A., dated January 7, 1992, incorporated
                  by reference to Exhibit 10.49 of the Registrant's Form 10-Q report for the period ended
                  April 2, 1995.


                                       30


<PAGE>

          10.52   Agreement made as of November 11, 1993 by and between Kodak Clinical Diagnostics Limited,
                  a company registered in England, and Ciba Corning Diagnostics Corp., a Delaware
                  corporation, and Letter dated October 7, 1994 from Kodak Clinical Diagnostics Limited to
                  Ciba Corning Diagnostics Corp., incorporated by reference to Exhibit 10.50 of Amendment
                  No. 1 to the Registrant's Form 10-Q report for the period ended April 2, 1995. [Certain
                  information has been omitted from the Agreement pursuant to a request by Registrant for
                  confidential treatment pursuant to Rule 24b-2.]

          10.53   Letter Agreement dated September 9, 1991 between the Registrant and Walter Moos,
                  incorporated by reference to Exhibit 10.47 of the Registrant's Form 10-K report for fiscal
                  year 1992.*
    
          10.54   Letter Agreement between the Registrant and Walter Moos, dated February 1, 1993,
                  incorporated by reference to Exhibit 10.48 of the Registrant's Form 10-K report for fiscal
                  year 1992.*

          10.55   Letter Agreement between Registrant and Renato Fuchs, dated May 13, 1993, incorporated by
                  reference to Exhibit 10.47 of the Registrant's Form 10-K report for fiscal year 1993.*

          10.56   Agreement made as of December 6, 1984, by and between Corning Glass Works, a New York
                  corporation, and Bioanalysis Limited, a company incorporated in England and Wales, and
                  Letter dated July 26, 1985 from Bioanalysis Limited to Corning Glass Works, incorporated
                  by reference to Exhibit 10.54 of the Registrant's Form 10-Q report for the period ended
                  April 2, 1995.  [Certain information has been omitted from the Agreement pursuant to a
                  request by Registrant for confidential treatment pursuant to Rule 24b-2.]
    
          10.57   Description of Executive Officer Variable Compensation Program, incorporated by reference
                  to Exhibit 10.57 of the Registrant's Form 10-K report for fiscal year 1995.
    
          10.58   Chiron Corporation 1995 Executive Officer Variable Cash Compensation Plan, incorporated by
                  reference to Annex 2 of the Registrant's Proxy Statement dated April 18, 1995.*

          10.59   Regulatory Filing, Development and Supply Agreement between the Registrant, Cetus Oncology
                  Corporation, a wholly- owned subsidiary of the Registrant, and Schering AG, a German
                  company, dated as of May 10, 1993 (with certain confidential information deleted),
                  incorporated by reference to Exhibit 10.50 of the Registrant's current report on Form 8-K
                  dated February 9, 1994.


                                       31


<PAGE>

          10.60   Letter Agreement dated December 30, 1993 by and between Registrant and Schering AG, a
                  German company (with certain confidential information deleted), incorporated by reference
                  to Exhibit 10.51 of the Registrant's Form 10-K report for fiscal year 1993.

          10.61   Guaranty, dated as of September 29, 1994, made by Registrant, in favor of Bankers Trust
                  Company, as trustee, incorporated by reference to Exhibit 10.52 of the Registrant's Form
                  10-Q report for the period ended September 30, 1994.

          10.62   Guaranty, dated as of September 29, 1994, made by Cetus Corporation, in favor of The First
                  National Bank of Boston, as trustee, incorporated by reference to Exhibit 10.53 of the
                  Registrant's Form 10-Q report for the period ended September 30, 1994.
    
          10.63   Letter Agreements dated September 11, 1992, July 15, 1994 and September 14, 1994 between
                  the Registrant and Lewis T. Williams, incorporated by reference to Exhibit 10.54 of the
                  Registrant's Form 10-Q report for the period ended September 30, 1994.*
    
          10.64   Letter dated January 4, 1995 to C. William Zadel, incorporated by reference to Exhibit
                  10.65 of the Registrant's Form 10-K report for fiscal year 1994.*
    
          10.65   Letter dated June 28, 1995 to C. William Zadel, incorporated by reference to Exhibit 10.65
                  of the Registrant's Form 10-K report for fiscal year 1995.*
    
          10.66   Letter to Dino Dina dated April 24, 1984, incorporated by reference to Exhibit 10.66 of
                  the Registrant's Form 10-K report for fiscal year 1994.*

          10.67   Research Agreement, dated as of July 15, 1985, between Ciba-Geigy Limited, a Swiss
                  corporation, and Ciba Corning Diagnostics Corp., a Delaware corporation, incorporated by
                  reference to Exhibit 10.64 of the Registrant's Form 10-Q report for the period ended April
                  2, 1995.


                                       32


<PAGE>
 
          10.68   Licensing Agreement, effective December 18, 1986, by and between Miles Laboratories, Inc.,
                  a Delaware corporation, and Ciba Corning Diagnostics Corp., a Delaware corporation, and
                  Letter dated December 18, 1992 from Ciba Corning Diagnostics Corp. to Miles Laboratories,
                  Inc., incorporated by reference to Exhibit 10.65 of Amendment No. 1 to the Registrant's
                  Form 10-Q report for the period ended April 2, 1995.  [Certain information has been
                  omitted from the Agreement pursuant to a request by Registrant for confidential treatment
                  pursuant to Rule 24b-2.]
    
          10.69   Magnetocluster Binding Assay Technology Agreement, dated as of January 21, 1983, by and
                  between Bioclinical Group, Inc., a Delaware corporation, and Corning Glass Works, a New
                  York corporation, incorporated by reference to Exhibit 10.66 of Amendment No. 1 to the
                  Registrant's Form 10-Q report for the period ended April 2, 1995. [Certain information has
                  been omitted from the Agreement pursuant to a request by Registrant for confidential
                  treatment pursuant to Rule 24b-2.]
    
          10.70   Turn-back License Agreement, dated as of May 30, 1986, by and between Ciba Corning
                  Diagnostics Corp., a Delaware corporation, and Advanced Magnetics, Inc., a Delaware
                  corporation, incorporated by reference to Exhibit 10.67 of the Registrant's Form 10-Q
                  report for the period ended April 2, 1995. [Certain information has been omitted from the
                  Agreement pursuant to a request by Registrant for confidential treatment pursuant to Rule
                  24b-2.]
    
          10.71   Settlement Agreement, dated August 30, 1989, between Ciba Corning Diagnostics Corp. and
                  Advanced Magnetics, Inc., incorporated by reference to Exhibit 10.68 of the Registrant's
                  Form 10-Q report for the period ended April 2, 1995.  [Certain information has been
                  omitted from the Agreement pursuant to a request by Registrant for confidential treatment
                  pursuant to Rule 24b-2.]
    
          10.72   Lease made and entered into December 17, 1984 between BGR Associates, a California limited
                  partnership, and Cetus Corporation and Amendment to  Lease dated December 17, 1984 entered
                  into effective February 1, 1986, incorporated by reference to Exhibit 10.69 of the
                  Registrant's Form 10-Q report for the period ended April 2, 1995.
    
          10.73   Second Amendment to Lease dated as of March 15, 1995 between BGR Associates, a California
                  limited partnership, and Registrant, incorporated by reference to Exhibit 10.73 of the
                  Registrant's Form 10-K report for fiscal year 1995.


                                       33


<PAGE>
    
          10.74   Agreement, effective as of December 21, 1988, by and between Hoffmann-La Roche Inc., a New
                  Jersey corporation, and Cetus Corporation, incorporated by reference to Exhibit 10.70 of
                  the Registrant's Form 10-Q report for the period ended April 2, 1995. [Certain information
                  has been omitted from the Agreement pursuant to a request by Registrant for confidential
                  treatment pursuant to Rule 24b-2.]
    
          10.75   Agreement, effective as of December 21, 1988, by and among F. Hoffmann-La Roche Ltd., a
                  Swiss corporation, Cetus Corporation, and EuroCetus International, B.V., a Netherlands
                  Antilles corporation, incorporated by reference to Exhibit 10.71 of the Registrant's Form
                  10-Q report for the period ended April 2, 1995. [Certain information has been omitted from
                  the Agreement pursuant to a request by Registrant for confidential treatment pursuant to
                  Rule 24b-2.]
    
          10.76   Agreement, by and between Cetus Oncology Corporation, EuroCetus International, N.V., and
                  F. Hoffmann-La Roche Ltd., incorporated by reference to Exhibit 10.72 of the Registrant's
                  Form 10-Q report for the period ended April 2, 1995. [Certain information has been omitted
                  from the Agreement pursuant to a request by Registrant for confidential treatment pursuant
                  to Rule 24b-2.]
    
          10.77   Agreement commencing January 1, 1991, between EuroCetus B.V. and the Municipal Development
                  Corporation (Translation), incorporated by reference to Exhibit 10.41 of the Registrant's
                  Form 10-K report for fiscal year 1994.

          10.78   Settlement Agreement on Purified IL-2, made as of April 14, 1995, by and between Cetus
                  Oncology Corporation, dba Chiron Therapeutics, a Delaware corporation, and Takeda Chemical
                  Industries, Ltd., a Japanese corporation, incorporated by reference to Exhibit 10.74 of
                  the Registrant's Form 10-Q report for the period ended July 2, 1995.  [Certain information
                  has been omitted from the Agreement pursuant to a request by Registrant for confidential
                  treatment pursuant to Rule 24b-2.]
    
          10.79   License Agreement made and entered into December 1, 1987, by and between Sloan Kettering
                  Institute for Cancer Research, a not-for-profit New York corporation, and Cetus
                  Corporation, incorporated by reference to Exhibit 10.75 of the Registrant's Form 10-Q
                  report for the period ended July 2, 1995.  [Certain information has been omitted from the
                  Agreement pursuant to a request by Registrant for confidential treatment pursuant to Rule
                  24b-2.]


                                       34


<PAGE>
    
          10.80   Chiron Funding L.L.C. Limited Liability Company Agreement, entered into and effective as
                  of December 28, 1995, among the Registrant, Chiron Biocine Company and Biocine S.p.A. and
                  Ciba-Geigy Corporation, incorporated by reference to Exhibit 10.80 of the Registrant's
                  Form 10-K report for fiscal year 1995. [Certain information has been omitted from the
                  Agreement and filed separately with the Securities and Exchange Commission pursuant to a
                  request by Registrant for confidential treatment pursuant to Rule 24b-2.  The omitted
                  confidential information has been identified by the following statement: "Confidential
                  Treatment Requested".]
    
          10.81   Agreement between Ciba-Geigy Limited and the Registrant made November 15, 1995,
                  incorporated by reference to Exhibit 10.81 of the Registrant's Form 10-K report for fiscal
                  year 1995.  [Certain information has been omitted from the Agreement and filed separately
                  with the Securities and Exchange Commission pursuant to a request by Registrant for
                  confidential treatment pursuant to Rule 24b-2.  The omitted confidential information has
                  been identified by the following statement: "Confidential Treatment Requested".]
    
          10.82   Reimbursement Agreement dated as of March 24, 1995, between Ciba-Geigy Limited, a Swiss
                  corporation, and the Registrant, incorporated by reference to Exhibit 10.76 of the
                  Registrant's Form 10-Q report for the period ended July 2, 1995.
    
          10.83   Promissory Note, as amended and restated, dated January 1, 1995 by Ciba Corning
                  Diagnostics Corp., incorporated by reference to Exhibit 10.83 of the Registrant's Form 10-
                  K report for fiscal year 1995.
    
          10.84   Commercial lease between Domilyon Corporation and Domilens Laboratories and Amendment No.
                  1 to Commercial Lease dated May 9, 1994, incorporated by reference to Exhibit 10.84 of the
                  Registrant's Form 10-K report for fiscal year 1995.
    
          10.85   Agreement between the Registrant and Cephalon, Inc. dated as of January 7, 1994, and
                  Letter Agreements between the Registrant and Cephalon dated January 13, 1995 and May 23,
                  1995, incorporated by reference to Exhibit 10.85 of the Registrant's Form 10-K report for
                  fiscal year 1995.  [Certain information has been omitted from the Agreements and filed
                  separately with the Securities and Exchange Commission pursuant to a request by Registrant
                  for confidential treatment pursuant to Rule 24b-2.  The omitted confidential information
                  has been identified by the following statement: "Confidential Treatment Requested".]


                                       35


<PAGE>
          11      Statement of Computation of Earnings per Share.

          27      Financial Data Schedule.

</TABLE>

   ---------------------------
  *Management contract, compensatory plan or arrangement.

      (b) Reports on Form 8-K

          Chiron filed a current report on Form 8-K, dated February 16, 1996, 
          reporting under Item 5 that, on February 16, 1996, Chiron and 
          Behringwerke AG, a subsidiary of Hoechst AG, issued a press release 
          announcing that the two companies have signed an agreement under 
          which Chiron will purchase 49 percent of the human vaccine business of
          Behringwerke AG for Deutsche mark 171.5 million in cash.



                                       36


<PAGE>
                               CHIRON CORPORATION

                                 March 31, 1996





                                   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.

                                          CHIRON CORPORATION


DATE: May 14, 1996                   BY: /s/Edward E. Penhoet 
      ------------                       --------------------
                                         Edward E. Penhoet
                                         President and Chief
                                         Executive Officer



DATE: May 14, 1996                   BY: /s/Dennis L. Winger 
      -------------                      -------------------
                                         Dennis L. Winger
                                         Senior Vice President,Finance
                                         and Administration, Chief Financial
                                         Officer, and Principal Accounting
                                         Officer


                                       37



<PAGE>

                                   EXHIBIT 11

                              CHIRON CORPORATION
                STATEMENT OF COMPUTATION OF EARNINGS PER SHARE

                                                    Three Months Ended March 31,
                                                  ------------------------------
                                                       1996             1995
                                                  -------------  ---------------

EARNINGS PER SHARE
  Net income (loss) available for
  common shares and common stock
  equivalent shares deemed to have a
  dilutive effect                                  $ 12,744,000  $ (385,778,000)
                                                   ------------  --------------
                                                   ------------  --------------

  Primary earnings (loss) per share                $       0.29  $        (9.64)
                                                   ------------  --------------
                                                   ------------  --------------

  Fully diluted earnings (loss) per share          $       0.29  $        (9.64)
                                                   ------------  ---------------
                                                   ------------  ---------------

Shares used in primary earnings (loss)
 per share computation:
   Weighted average common shares
    outstanding                                      42,009,000      40,013,000
   Weighted average dilutive
    incremental common shares
    issuable from exercise of warrants                  113,000              --
   Weighted average dilutive
    incremental common shares
    issuable under employee stock
    option programs                                   2,499,000              --
                                                   ------------   --------------
   Total common shares and common
    stock equivalent shares deemed to
    have a dilutive effect                           44,621,000      40,013,000
                                                   ------------   --------------
                                                   ------------   --------------
Shares used in fully dilutive earnings
 (loss) per share computation:
   Weighted average common shares
    outstanding                                      42,009,000      40,013,000
   Weighted average dilutive
    incremental common shares
    issuable from exercise of warrants                  114,000              --
   Weighted average dilutive
    incremental common shares
    issuable under employee stock
    option programs                                   2,500,000              --
                                                   ------------   --------------
   Total common shares and common
    stock equivalent shares deemed to
    have a dilutive effect                           44,623,000      40,013,000
                                                   ------------   --------------
                                                   ------------   --------------
    




<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CHIRON
CORPORATION'S CONSOLIDATED BALANCE SHEET DATED MARCH 31, 1996, AND CONSOLIDATED
STATEMENT OF OPERATIONS FOR THE THREE MONTHS ENDED MARCH 31, 1996 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-29-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                          84,809
<SECURITIES>                                   134,527<F1>
<RECEIVABLES>                                  295,577
<ALLOWANCES>                                    19,530
<INVENTORY>                                    170,139
<CURRENT-ASSETS>                               670,434
<PP&E>                                         692,227
<DEPRECIATION>                                 157,120
<TOTAL-ASSETS>                               1,511,375
<CURRENT-LIABILITIES>                          364,281
<BONDS>                                        419,148<F2>
                                0
                                          0
<COMMON>                                           422
<OTHER-SE>                                     693,646<F3>
<TOTAL-LIABILITY-AND-EQUITY>                 1,511,375
<SALES>                                        238,259
<TOTAL-REVENUES>                               305,751
<CGS>                                          101,979
<TOTAL-COSTS>                                  101,979
<OTHER-EXPENSES>                               179,485<F4>
<LOSS-PROVISION>                                   418
<INTEREST-EXPENSE>                               6,794<F5>
<INCOME-PRETAX>                                 18,469
<INCOME-TAX>                                     5,725
<INCOME-CONTINUING>                             12,744
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    12,744
<EPS-PRIMARY>                                     0.29
<EPS-DILUTED>                                     0.29
<FN>
<F1>CONSISTS OF BOTH SHORT-TERM AND NONCURRENT INVESTMENTS IN MARKETABLE DEBT
SECURITIES.
<F2>CONSISTS OF CONVERTIBLE SUBORDINATED DEBENTURES, CAPITAL LEASE OBLIGATIONS AND
NOTES PAYABLE.
<F3>CONSISTS OF ADDITIONAL PAID-IN CAPITAL, ACCUMULATED DEFICIT, CUMULATIVE FOREIGN
CURRENCY TRANSLATION ADJUSTMENT AND UNREALIZED GAIN FROM INVESTMENTS.
<F4>CONSISTS OF RESEARCH AND DEVELOPMENT; SELLING, GENERAL AND ADMINISTRATIVE; AND
OTHER OPERATING EXPENSES.
<F5>CONSISTS OF INTEREST EXPENSE AND RELATED COSTS OF CONVERTIBLE DEBENTURES AND
OTHER INTEREST EXPENSE.
</FN>
        

</TABLE>


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