COULTER PHARMACEUTICALS INC
10-Q, 1997-08-05
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1
                                                         

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 10-Q


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

For the period ended                 JUNE 30, 1997
                     ---------------------------------------------------

                                       OR

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

FOR THE TRANSITION PERIOD FROM               TO 
                               -------------    --------------


                               Commission File No.
                                     0-21905


                          COULTER PHARMACEUTICAL, INC.
             (Exact name of registrant as specified in its charter)


               Delaware                                      94-3219075
   (State or other jurisdiction of                          (I.R.S. Employer
    incorporation or organization)                         Identification No.)

 550 California Ave, Palo Alto, California                      94306
  (Address of principal executive offices)                   (Zip Code)

Registrant's telephone number, including area code:          415-842-7300


         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
                                 -------   -------

         Number of shares outstanding of the issuer's Common Stock, par value 
$.001 per share, as of July 31, 1997:  10,350,245.

<PAGE>   2




                          COULTER PHARMACEUTICAL, INC.

                                      INDEX

<TABLE>
<CAPTION>

PART       I.     FINANCIAL INFORMATION                                                                PAGE NO.
<S>        <C>        <C>                                                                                <C>
Item       1.         Consolidated Financial Statements and Notes                                         3

                      Consolidated Balance Sheets - June 30, 1997 and
                      December 31, 1996                                                                   3
                      Consolidated Statements of Operations -- for the three months
                      and six months ended June 30, 1997 and 1996 and for the
                      period from inception (February 16, 1995) to June 30, 1997                          4
 
                      Consolidated Statements of Cash Flows -- for the six
                      months ended June 30, 1997 and 1996 and for the period
                      from inception (February 16, 1995) to June 30, 1997                                 5
                      Notes to Consolidated Financial Statements                                          6
Item       2.         Management's Discussion and Analysis of Financial
                      Condition and Results of Operations                                                 8

Item       4.         Submission of Matters to a Vote of Security Holders                                11

PART       II.    OTHER INFORMATION

Item       6.         Exhibits and Reports on Form 8-K                                                   11

SIGNATURES                                                                                               12

</TABLE>




                                       2
<PAGE>   3

                          PART I. FINANCIAL INFORMATION

Item 1.  Consolidated Financial Statements and Notes

                          COULTER PHARMACEUTICAL, INC.
                          (A DEVELOPMENT STAGE COMPANY)
                           CONSOLIDATED BALANCE SHEETS
               (in thousands, except share and per share amounts)

                                     ASSETS
<TABLE>
<CAPTION>
                                                                                  JUNE 30,  DECEMBER 31,
                                                                                    1997       1996
                                                                                  --------  ------------
Current assets:                                                                  (Unaudited)
<S>                                                                               <C>         <C>     
     Cash and cash equivalents                                                    $ 11,368    $  8,826
     Short-term investments                                                         29,670       7,617
     Prepaid expenses and other current assets                                         518         499
     Current portion of employee loans receivable                                       34          35
                                                                                  --------    --------
         Total current assets                                                       41,590      16,977

Property and equipment, net                                                          1,515         924
Employee loans receivable                                                              148         271
Other assets                                                                           234         149
                                                                                  --------    --------
                                                                                  $ 43,487    $ 18,321
                                                                                  ========    ========

                                           LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:

     Accounts payable                                                             $  2,528    $  1,490
     Payable to Coulter Corporation                                                     85         111
     Accrued liabilities                                                             1,202       4,330
     Current portion of equipment financing obligations
         and debt facility                                                             576         309
                                                                                  --------    --------
         Total current liabilities                                                   4,391       6,240

Noncurrent portion of equipment financing obligations
     and debt facility                                                               2,213       1,535

Commitments
Stockholders' equity:
     Preferred stock, issuable in series, $.001 par value:
         3,000,000 shares authorized; none and 19,797,940 shares
         issued and outstanding at June 30, 1997 and
         December 31, 1996, respectively                                                 -      28,355
     Common stock, $.001 par value; 30,000,000 shares
         authorized; 10,335,484 shares and 437,612 shares issued
         and outstanding at June 30, 1997 and December 31, 1996,
         respectively                                                                   10           1
     Additional paid-in capital                                                     65,354       2,488
     Net unrealized gain (loss) on securities available for sale                        20          (3)
     Deferred compensation                                                          (1,370)     (1,964)
     Deficit accumulated during the development stage                              (27,131)    (18,331)
                                                                                  --------    --------
         Total stockholders' equity                                                 36,883      10,546
                                                                                  --------    --------
                                                                                  $ 43,487    $ 18,321
                                                                                  ========    ========
</TABLE>

                             See accompanying notes.




                                       3
<PAGE>   4

                          COULTER PHARMACEUTICAL, INC.
                          (A DEVELOPMENT STAGE COMPANY)
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (unaudited)
                    (in thousands, except per share amounts)


<TABLE>
<CAPTION>

                                                                                                  
                                                   THREE MONTHS ENDED        SIX MONTHS ENDED      FOR THE PERIOD
                                                        JUNE 30,                 JUNE 30,          FROM INCEPTION
                                                  -------------------      ------------------    (FEBRUARY 16, 1995)
                                                    1997        1996          1997      1996       TO JUNE 30, 1997
                                                  --------    -------      --------    -------   -------------------
<S>                                                <C>        <C>           <C>        <C>            <C>     
Operating costs and expenses:
     Research and development                      $ 3,547    $ 3,223       $ 6,583    $ 4,940        $ 22,803
     General and administrative                      1,972        368         3,180        625           6,170
                                                   -------    -------       -------    -------        --------
Total operating costs and expenses                   5,519      3,591         9,763      5,565          28,973

Interest income, net                                   525        221           963        254           1,842
                                                   -------    -------       -------    -------        --------
Net loss                                           $(4,994)   $(3,370)      $(8,800)   $(5,311)       $(27,131)
                                                   =======    =======       =======    =======        ========
Net loss per share                                 $ (0.48)   $ (0.44)      $ (1.01)   $ (0.69)
                                                   =======    =======       =======    =======

Shares used in computing pro forma
     net loss per share                             10,315      7,736         8,725      7,736
                                                    ======      =====         =====      =====
</TABLE>













                             See accompanying notes.


                                       4
<PAGE>   5

                          COULTER PHARMACEUTICAL, INC.
                          (A DEVELOPMENT STAGE COMPANY)
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                Increase (decrease) in cash and cash equivalents
                                   (unaudited)
                                 (in thousands)


<TABLE>
<CAPTION>
                                                                                      
                                                           SIX MONTHS           FOR THE PERIOD 
                                                         ENDED JUNE 30,         FROM INCEPTION
                                                      --------------------      (FEB. 16, 1995)
                                                        1997        1996        TO JUNE 30, 1997
                                                      --------    --------     -------------------   

<S>                                                   <C>         <C>               <C>      
Cash flows from operating activities:
     Net loss                                         $ (8,800)   $ (5,311)         $(27,131)
     Adjustments used to reconcile net loss
     to net cash used in operating activities:
         Depreciation and amortization                      58          19               122
         Amortization of deferred compensation             594           -               924
     Changes in operating assets and liabilities:
         Prepaid expenses and other current assets         (18)       (163)             (517)
         Employee loans receivable                          37        (321)             (269)
         Other assets                                        1           2              (151)
         Accounts payable                                1,037         819             2,527
         Payable to Coulter Corporation                    (26)         32                85
         Accrued liabilities                            (3,128)      1,711             1,289
                                                      --------     -------          --------
              Net cash used in operating activities    (10,245)     (3,212)          (23,121)
                                                      --------     -------          --------

Cash flows from investing activities:
     Purchases of short-term investments               (31,035)          -           (39,644)
     Maturities of short-term investments                9,006           -             9,992
     Purchases of property and equipment                  (649)       (534)           (1,630)
                                                      --------     -------          --------
              Net cash used in investing activities    (22,678)       (534)          (31,282)
                                                      --------     -------          --------
Cash flows from financing activities:
     Payments of equipment financing obligations
         and debt facility                                (214)          -              (258)
     Borrowings under equipment lease financing
         and debt facility                               1,159           -             2,959
     Proceeds from issuances of convertible 
         preferred stock, net                                -      22,366            28,355
     Proceeds from issuance of common stock             34,520         182            34,715
                                                      --------     -------          --------
              Net cash provided by
                  financing activities                  35,465      22,548            65,771
                                                      --------     -------          --------
Net increase (decrease) in cash and cash equivalents     2,542      18,802            11,368

Cash and cash equivalents at beginning of period         8,826       3,438                 -
                                                      --------     -------          --------
Cash and cash equivalents at end of period            $ 11,368     $22,240          $ 11,368
                                                      ========     =======          ========
</TABLE>



                             See accompanying notes.



                                       5
<PAGE>   6



                          COULTER PHARMACEUTICAL, INC.
                          (A DEVELOPMENT STAGE COMPANY)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                                  June 30, 1997
                                   (unaudited)


1.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

         Basis of Presentation

         The information at June 30, 1997, for the three and six month periods
ended June 30, 1997 and 1996 and for the period from inception (February 16,
1995) to June 30, 1997 is unaudited but includes all adjustments (consisting
only of normal recurring adjustments) which, in the opinion of management, are
necessary to state fairly the financial information set forth therein in
accordance with generally accepted accounting principles. The interim results
are not necessarily indicative of results to be expected for the full fiscal
year. These financial statements should be read in conjunction with the audited
financial statements for the fiscal year ended December 31, 1996 included in the
Company's annual report to security holders furnished to the Securities and
Exchange Commission pursuant to Rule 14a-3(b) in connection with the Company's
1997 Annual Meeting of Stockholders.

         The consolidated balance sheet at December 31, 1996 has been derived
from audited consolidated financial statements at that date but does not include
all of the information and footnotes required by generally accepted accounting
principles for complete financial statements.

         Net Loss Per Share

         Net loss per share is computed using the weighted average number of
common shares outstanding during the period. Common stock equivalents relating
to stock options are excluded from the computation as their effect is
antidilutive. For the period prior to the Company's initial public offering, the
calculation includes those shares required by the Securities and Exchange
Commission's staff accounting bulletins and guidelines.

         In February 1997, the Financial Accounting Standards Board ("FASB")
issued Statement No. 128, "Earnings Per Share" ("Statement 128"). The Statement
is effective for both interim and annual financial statements for periods ending
after December 15, 1997. Under Statement 128, primary EPS computed in accordance
with Accounting Principle Board Opinion No. 25 will be replaced with a new
simpler calculation called "basic EPS" and the Company will be required to
restate comparative EPS amounts for all prior periods. Under the new
requirements, basic EPS for the three and six month periods ended June 30, 1997
and 1996 will be unchanged from primary EPS as currently disclosed. Fully
diluted EPS will not change significantly but has been renamed "diluted EPS".
The Company will implement the Statement in the fourth quarter of 1997.

         In June 1997, the FASB issued Statement No. 130 "Reporting
Comprehensive Income". Although the Company has only recently commenced
evaluation of this new pronouncement, its impact is not expected to be
significant. The Company will be required to comply with the revisions of the
Statement in fiscal 1998.





                                       6
<PAGE>   7

2.       INVESTMENTS

         Management determines the appropriate classification of debt securities
at the time of purchase and reevaluates such designation as of each balance
sheet date. The Company's debt securities are classified as available-for-sale
and are carried at estimated fair value in cash equivalents and short-term
investments. Unrealized gains and losses are reported as a separate component of
stockholders' equity. The amortized cost of debt securities in this category is
adjusted for amortization of premiums and accretion of discounts to maturity.
Such amortization is included in interest income. Realized gains and losses on
available-for-sale securities are included in interest income and expense. The
cost of securities sold is based on the specific identification method. Interest
and dividends on securities classified as available-for-sale are included in
interest income. The Company's cash equivalents and short-term investments as of
June 30, 1997 are as follows (in thousands):

<TABLE>
<CAPTION>

                                                     GROSS         GROSS
                                       AMORTIZED   UNREALIZED    UNREALIZED    ESTIMATED
                                         COST        GAINS         LOSSES      FAIR VALUE
                                       ---------   ----------    ----------    ----------
<S>                                    <C>            <C>        <C>           <C>    
Money market funds                     $  1,715       $  -       $     -       $  1,715
Commercial paper                          7,414          -            (4)         7,410
Corporate bond                           15,431          -            (6)        15,425
U.S. Government backed securities        11,268         30             -         11,298
CDs                                       5,108          -             -          5,108
                                       --------       -----      -------       --------
       Total                             40,936         30           (10)        40,956

Less amounts classified
       as cash equivalents              (11,286)         -             -        (11,286)
                                       --------       -----      -------       --------
Total short-term investments           $ 29,650       $ 30       $   (10)      $ 29,670
                                       ========       ====       =======       ========
</TABLE>

At June 30, 1997, the contractual maturities of short term investments were as
follows (in thousands):

<TABLE>
<CAPTION>
                                                                                  ESTIMATED
                                                      AMORTIZED COST              FAIR VALUE
                                                      --------------              ----------
<S>                                                       <C>                      <C>    
Due in one year or less                                   $19,859                  $19,881
Due after one year through two years                        9,791                    9,789
                                                          -------                  -------
                                                          $29,650                  $29,670
</TABLE>
 

3.       STOCKHOLDERS' EQUITY

         On January 28, 1997, the Company completed its initial public offering
of 2,500,000 shares of its common stock at a price to the public of $12.00 per
share, resulting in net proceeds to the Company of approximately $27.9 million.
A one-for-three reverse common stock split became effective prior to the
commencement of the offering. All common share and per share amounts have been
retroactively restated to reflect the reverse stock split.

         Also in January 1997, the Company received approximately $3.1 million
from the cash exercise of warrants to purchase 385,315 shares of its common
stock and issued an additional 37,785 shares of its common stock upon the net
exercise of warrants to purchase 113,390 shares of its common stock. In February
1997, the Company received approximately $4.2 million from



                                       7
<PAGE>   8

the sale of 375,000 shares of its common stock pursuant to the exercise of the
underwriters' over-allotment option in connection with the initial public
offering.

         Upon completion of the initial public offering all of the 19,797,940
shares of Series A, B and C preferred stock outstanding converted to shares of
common stock on a three-for-one basis. Also upon the completion of the offering,
the Company filed an Amended and Restated Certificate of Incorporation
authorizing the Company to issue 33,000,000 shares, 30,000,000 of which is
designated Common Stock and 3,000,000 of which is designated Preferred Stock.

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

         The following discussion contains, in addition to historical
information, forward-looking statements that involve risks and uncertainties.
Actual results may differ significantly from the results discussed in the
forward-looking statements. Factors that could cause or contribute to such
differences include, but are not limited to, those discussed below and in the
Company's Annual Report on Form 10-K for the year ended December 31, 1996.

OVERVIEW

         Coulter Pharmaceutical, Inc. ("Coulter Pharmaceutical" or the
"Company") is engaged in the development of novel drugs and therapies for the
treatment of people with cancer. The Company's first product candidate,
Bexxar(TM) (previously referred to as the B-1 Therapy), is based upon the
antibody therapeutics program which originated in the late 1970s at Coulter
Corporation. Coulter Corporation conducted research and development on the
potential therapeutic applications of the B-1 Antibody as part of a broader
antibody therapeutics program. To accelerate the pace of development of Bexxar
and to obtain external sources of capital for the program, Coulter Corporation
decided to create a separate Company into which it placed its conjugated
antibody therapeutics assets. Thus, in February 1995, Coulter Pharmaceutical was
incorporated and acquired worldwide rights to Bexxar and related intellectual
property, know-how and other assets from Coulter Corporation.

         To date, the Company has devoted substantially all of its resources to
its research and development programs. No revenues have been generated from
product sales, and products resulting from the Company's research and
development efforts, if any, are not expected to be available commercially for
at least the next few years. The Company has a limited history of operations and
has experienced significant operating losses to date. The Company expects to
incur significant additional operating losses over the next several years and
expects cumulative losses to increase substantially due to expanded research and
development efforts, preclinical studies and clinical trials and development of
manufacturing, marketing and sales capabilities. The Company expects that losses
will fluctuate from quarter to quarter and that such fluctuations may be
substantial. There can be no assurance that the Company will successfully
develop, manufacture and commercialize its products or ever achieve or sustain
product revenues or profitability. As of June 30, 1997, the Company's
accumulated deficit during the development stage was approximately $27.1
million.

RESULTS OF OPERATIONS

Operating Costs and Expenses

         For the quarter ended June 30, 1997, research and development expenses
increased $0.3 million to $3.5 million from $3.2 million for the same period in
1996. The Company's research and development expenses increased $1.7 million to
$6.6 million for the six month period ended June 30, 1997 from $4.9 million for
the same period in 1996. These increases were due



                                       8
<PAGE>   9

primarily to increases in staffing and expenditures associated with the
development of Bexxar, including costs of clinical trials and manufacturing
expenses. Included in manufacturing expenses are certain expenses associated
with scaled-up production of monoclonal antibodies and the establishment of a
centralized radiolabeling capability. The Company expects its research and
development expenses to grow during the remainder of 1997, reflecting
anticipated increased costs related to staffing, preclinical studies, clinical
trials and manufacturing.

         General and administrative expenses were $2.0 million and $0.4 million
for the quarters ended June 30, 1997 and 1996, respectively, representing an
increase of $1.6 million. For the six month periods ended June 30, 1997 and
1996, such expenses were $3.2 million and $0.6 million, respectively,
representing an increase of $2.6 million. These increases were incurred to
support the Company's facilities and staffing expansion, increased research and
development efforts, increased corporate development activities and related
legal and patent activities. The Company expects its general and administrative
expenses to continue to increase during the remainder of 1997 in support of its
increased research and development, patent and corporate development activities,
as well as increasing commercialization efforts in anticipation of potential
product sales.

Net Interest Income

         Net interest income was $525,000 and $221,000 for the quarters ended
June 30, 1997 and 1996, respectively. Net interest income for the six month
periods ended June 30, 1997 and 1996 was $963,000 and $254,000, respectively.
These increases were due to higher average cash, cash equivalent and short-term
investment balances as a result of the Company's sale of Preferred Stock in
April 1996 and the completion of the Company's initial public offering in
January 1997.

LIQUIDITY AND CAPITAL RESOURCES

         Since its inception through June 30, 1997, the Company has financed its
operations primarily through private and public equity financings totaling $63.4
million. In December 1996, the Company entered into a $3.8 million equipment
financing agreement, $0.8 million of which is available at June 30, 1997.

         Cash, cash equivalents and short-term investments totaled $41.0 million
at June 30, 1997. In January 1997, the Company completed its initial public
offering of 2,500,000 shares of common stock at a price to the public of $12.00
per share resulting in net proceeds to the Company of approximately $27.9
million. Also in January 1997, the Company received an additional $3.1 million
from the exercise of warrants to purchase 385,315 shares of common stock. In
February 1997, the Company received an additional $4.2 million from the sale of
375,000 shares of its common stock pursuant to the exercise of the underwriters'
over-allotment option in connection with the Company's initial public offering.

         The negative cash flows from operations result primarily from the
Company's net operating losses and are expected to continue and to accelerate in
the foreseeable future. The Company expects to incur substantial and increasing
research and development expenses, including expenses related to additions to
personnel, preclinical studies, clinical trials, manufacturing and
commercialization efforts. The Company will need to raise substantial additional
capital to fund its operations. The Company intends to seek such additional
funding through public or private equity or debt financings from time to time,
as market conditions permit. There can be no assurance that additional financing
will be available on acceptable terms, if at all. If adequate funds are not
available, the Company may be required to delay, reduce the scope of, or
eliminate one or more of its research and development programs or obtain funds
through arrangements with collaborative partners or others that may require the
Company 



                                       9
<PAGE>   10

to relinquish rights to certain of its technologies, product candidates
or products that the Company would otherwise seek to develop or commercialize.

         Net cash used in operations was $10.2 million for the six month period
ended June 30, 1997, compared to $3.2 million for the same period in 1996. This
$7.0 million increase is primarily the result of the increased net loss for the
six month period ended June 30, 1997, as well as a $3.1 million decrease in
accrued liabilities resulting from payments primarily related to manufacturing
activities. Net cash used in investing activities increased to $22.7 million for
the six month period ended June 30, 1997 from $534,000 for the same period in
1996 primarily resulting from the purchase of $31.0 million in short-term
investments using a portion of the proceeds of the Company's initial public
offering. Maturities of such investments were $9.0 million during the six month
period ended June 30, 1997. Net cash provided by financing activities increased
to $35.5 million for the six month period ended June 30, 1997 resulting
primarily from the completion of the Company's initial public offering.

         The Company expects that its existing capital resources, including the
net proceeds of its initial public offering and interest thereon, will be
adequate to satisfy the requirements of its current and planned operations
through 1998. At June 30, 1997, the Company had no material commitments for
capital expenditures. The Company's future capital requirements will depend on a
number of factors, including: the scope and results of preclinical studies and
clinical trials; continued progress of the Company's research and development of
potential products; the cost, timing and outcome of regulatory approvals; the
adequacy of its facilities; the expenses of establishing a sales and marketing
force; the timing and cost of establishment or procurement of requisite
production, radiolabeling and other capacities; the cost involved in preparing,
filing, prosecuting, maintaining, defending and enforcing patent claims; the
need to acquire licenses to new technology; the status of competitive products,
and the availability of other financing.

BUSINESS RISKS

         Except for the historical information contained herein, the matters
discussed in this filing are forward-looking statements that involve risks and
uncertainties, including uncertainties related to product development,
uncertainties related to the need for regulatory and other government approvals,
dependence on proprietary technology, uncertainty of market acceptance of Bexxar
(TM) or the Company's other product candidates and other risks, including those
detailed in the Company's other filings with the Securities and Exchange
Commission. In particular, see "Item 1, Financial Business-Risk Factors," of the
Company's Annual Report on Form 10-K for the year ended December 31, 1996.




                                       10
<PAGE>   11

                           PART II. OTHER INFORMATION


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

         At the Annual Meeting of Stockholders of the Company held on May 30,
1997, the stockholders elected eight directors and ratified the selection of
Ernst & Young LLP as independent auditors of the Company for its fiscal year
ending December 31, 1997 (the "Selection of Auditors").

         Of the 10,309,461 shares of Common Stock of the company outstanding as
of the April 7, 1997 record date for the Annual Meeting (the "Outstanding
Shares"), the votes regarding the election of directors were as follows:

<TABLE>
<CAPTION>

                                        Votes
                             Votes    Against or                    Broker
                              For      Withheld    Abstentions    Non-votes
                           ---------  ----------   -----------    ---------
<S>                        <C>           <C>          <C>         <C>      
Brian G. Atwood            6,278,925     1,100         N/A        4,029,436
Michael F. Bigham          6,277,925     2,100         N/A        4,029,436
Joseph R. Coulter, III     6,278,525     1,500         N/A        4,029,436
Donald L. Lucas            6,277,925     2,100         N/A        4,029,436
Robert R. Momsen           6,278,925     1,100         N/A        4,029,436
Arnold L. Oronsky, Ph.D    6,278,925     1,100         N/A        4,029,436
George Sella, Jr           6,277,925     2,100         N/A        4,029,436
Sue Van                    6,278,255     1,800         N/A        4,029,436
</TABLE>

         Of the Outstanding Shares, 6,273,925 shares were voted for the
ratification of the Selection of Auditors; 2,200 shares were voted against or
were withheld with respect to the ratification of the Selection of Auditors;
3,900 shares abstained; and no shares were broker non-votes.


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

(a)    Exhibits

       Exhibit
       Number   Description of Document

       10.12+   Second Amendment to  Manufacturing  Agreement, dated June 30,
                1997, by and between Lonza biologics PLC and the Company.

       27       Financial Data Schedule.

- -------------

+      Portions omitted pursuant to a request of confidentiality filed 
       separately with the Commission.

(b)    Reports on Form 8-K

       There were no reports on Form 8-K filed for the Quarter ended June 30,
       1997.



                                       11
<PAGE>   12

                                   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.





                                           COULTER PHARMACEUTICAL, INC.






Date:    August 5, 1997                    /s/ Michael F. Bigham
                                           -------------------------------------
                                           Michael F. Bigham
                                           President and Chief Executive Officer




Date:    August 5, 1997                    /s/ William G. Harris
                                           -------------------------------------
                                           William G. Harris
                                           Vice President and
                                           Chief Financial Officer




                                       12
<PAGE>   13

<TABLE>
<CAPTION>
Exhibit         Exhibit
Footnote        Number                  Description of Document

<S>             <C>            <C>                                             
                10.12+         Second Amendment to Manufacturing  Agreement,
                               dated June 30, 1997, by and between Lonza 
                               biologics PLC and the Company.

                27             Financial Data Schedule

</TABLE>

- ----------
+Portions omitted pursuant to a request of confidentiality filed separately
 with the Commission.


<PAGE>   1
                                            ***TEXT OMITTED AND FILED SEPERATELY
                                                CONFIDENTIAL TREATMENT REQUESTED
                                         UNDER 17, C.F.R. SECTIONS 200.80(b)(4),
                                                            200.83 AND 240.24b-2


                      SECOND AMENDMENT TO LONZA AGREEMENT


         THIS SECOND AMENDMENT is made the 30th day of June, 1997 to an
Agreement dated 20 August 1996, and amended 18th November 1996, ("the
Agreement") between COULTER PHARMACEUTICAL, INC. of 550, California Avenue,
Suite 200, Palo Alto, CA 94306, USA ("the Customer") and LONZA BIOLOGICS PLC of
228 Bath Road, Slough, Berkshire, SL1 4DY, England ("Lonza").

                                    WHEREAS:

         A. The parties entered into the Agreement pursuant to which Lonza
agreed to provide Services to the Customer to develop a Process for production
of Product; and

         B. Customer now wishes Lonza to perform certain additional Services in
association with the above mentioned development and manufacture of Product; and

         C. Lonza is prepared to provide such additional Services on the terms
and conditions set out herein.

         NOW, THEREFORE, it is hereby agreed to amend the terms of the Agreement
as follows:


                                       1.


<PAGE>   2



         2.  A new Stage 12 shall be added to Schedule 2 as follows:

             "Stage 12 - Production and Characterisation of a Post-Production
Cell Bank for the Cell Line.

             12.1     OBJECTIVES

                      12.1.1 To prepare Post-Production Cell Banks from the Cell
Line.

                      12.1.2 To characterise one Post-Production Cell Bank.

             12.2     ACTIVITIES

                      12.2.1 Take [. . . *** . . .].

                      12.2.2 Select [. . . *** . . .] for further
characterisation.

                      12.2.3 Characterise the cells from the selected 
[. . . ***. . .] in the following tests:

                             [. . . *** . . .]

                      12.2.4 Issue cell bank testing results to the Customer.

             12.3     TIMESCALE

             As at the date of signature of this amendment [. . . *** . . .]."

* CONFIDENTIAL TREATMENT REQUESTED

                                       2.




<PAGE>   3



         2.  A new Stage 13 shall be added to Schedule 2 as follows:

             "Stage 13 - Consistency Studies on Manufacture of Product

             13.1     OBJECTIVES

                      13.1.1 To demonstrate batch to batch consistency of
[. . .*** . . .] and Product [. . . *** . . .].

                      13.1.2 To demonstrate batch to batch consistency of 
[. . .*** . . .] and Product [. . . *** . . .].

                      13.1.3 To determine the [. . . *** . . .].

                      13.1.4 To evaluate the [. . . *** . . .].

             13.2     ACTIVITIES

                      13.2.1 Agree GLP protocols for the consistency studies
with the Customer.

                      13.2.2 Prepare a sampling schedule for [. . . *** . . .].
These samples are in addition to the routine samples collected for GMP
compliance. [. . . *** . . .].

                      Record [. . . *** . . .] to provide [. . . *** . . .].

                      13.2.3 Analyse the samples [. . . *** . . .], as detailed
in the agreed protocols.

                      13.2.4 Carry out [. . . *** . . .]. Summarise and review
the key analytical and technical data as follows:

                            [. . . *** . . .]

                      13.2.5 Prepare a sampling schedule for [. . . *** . . .].

                      Record [. . . *** . . .].

                      13.2.6 Analyse the samples [. . . *** . . .]. The assays
to be performed will be as set out below.

         Note: The Customer [. . . *** . . .].

* CONFIDENTIAL TREATMENT REQUESTED

                                       3.




<PAGE>   4



           SCHEDULE OF SAMPLES TO BE ASSAYED IN THE CONSISTENCY STUDY
                                 (PURIFICATION)
<TABLE>
<CAPTION>
===============================================================================================================================
           Assay      [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
PROCESS SAMPLES:
<S>                   <C>            <C>            <C>            <C>            <C>            <C>             <C>     

===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================

===============================================================================================================================
           Assay      [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
PROCESS SAMPLES:
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
        [...***...]   [...***...]    [...***...]    [...***...]    [...***...]    [...***...]    [...***...]     [...***...]
===============================================================================================================================
</TABLE>
                              T = Test X = Not Test

* CONFIDENTIAL TREATMENT REQUESTED

                                       4.

<PAGE>   5




                      13.2.7 Determine [. . . *** . . .] where assays have been
performed according to activity 13.2.6.

                      13.2.8 Where appropriate, determine [. . . *** . . .].
Assess from [. . . *** . . .]

                      13.2.9 Carry out [. . . *** . . .]. Summarise and review
the key technical data as follows:

                             [. . . *** . . .]

                      13.2.10 Issue a report of activities at Lonza to the
Customer.

                      Note: Summaries of [. . . *** . . .] results for [. . .
*** . . .] will be presented in the regulatory dossier, to be prepared under
Stage 19, not in this report.

             13.3     TIMESCALE

             Stage 13 shall be complete upon issue of the report of activities
to the Customer (Section 13.2.10). It is estimated that this report will be
issued [. . . *** . . .] from the approval of the study protocol by the Customer
(13.2.1), provided that [. . . *** . . .] under Stage 5 of the Services and the
sampling (13.2.2) has also been completed by that time."

* CONFIDENTIAL TREATMENT REQUESTED

                                       5.

<PAGE>   6




         3.  A new Stage 14 shall be added to Schedule 2 as follows:

         "Stage 14 - Stability of Partially Purified Product at Stages
during the Manufacturing Process (Intermediates Stability Study).

             14.1     OBJECTIVE

                      14.1.1 To investigate the stability of Product 
[. . . *** . . .] to [. . . *** . . .] and provide an estimate of the stability 
of Product intermediates.

             14.2     ACTIVITIES

                      14.2.1 Agree a GLP protocol for the study with the
Customer.

                      14.2.2 Collect in-process samples of [. . . *** . . .]
from [. . . *** . . .].

                      14.2.3 At appropriate time points [. . . *** . . .].

                      14.2.4 At the final time point, [. . . *** . . .]:

                           [. . . *** . . .]

                      [. . . *** . . .].

                      14.2.5 Confirm [. . . *** . . .].

                      14.2.6 Send [. . . *** . . .] for the [. . . *** . . .] to
perform assays as appropriate.

                      14.2.7 Issue a report of the activities at Lonza to the
Customer.

             14.3     TIMESCALE

                      Stage 14 shall be complete upon issue of the report of
activities (activity 14.2.6) to the Customer. It is estimated that this report
will be issued [. . . *** . . .] from commencement of activities."

* CONFIDENTIAL TREATMENT REQUESTED

                                       6.

<PAGE>   7




         4.  A new Stage 17a shall be added to Schedule 2 as follows:

                  "Stage 17a - Validation of A280 and Protein A Product Release
Assays for Bulk Purified Product

             17a.1    OBJECTIVE

                      To validate A280 and Protein A Product release assays [. .
 . *** . . .]. Data will be generated by [. . . *** . . .]. [. . . *** . . .]
will be used for [. . . *** . . .]. The studies will be carried out to GMP/GLP
and [. . . *** . . .].

             17a.2    ACTIVITIES

                      17a.2.1 Protein A Assay

                             Agree GMP study protocol with the Customer. Carry
out validation of the assay for Protein A. [. . . *** . . .]. The following
studies will be performed:

                            [. . . *** . . .]

                      17a.2.2 A280 Assay

                             Agree a GMP study protocol with the Customer.
Validate the Lonza A280 assay for Product.

                      17a.2.3 Performance Review

                             Review performance of the assays [. . . *** . . .].

                      17a.2.4 Prepare reports and submit to the Customer.

             17a.3    TIMESCALE

                      Each assay programme will be complete upon issue of the
report for each assay programme to the Customer. Stage 17a shall be complete
upon the issue of the final assay programme report to the Customer. It is
estimated that Stage 17a will take approximately [. . . *** . . .] to complete."

* CONFIDENTIAL TREATMENT REQUESTED

                                       7.

<PAGE>   8




         5.  A new Stage 18 will be added to Schedule 2 as follows:

         "Stage 18 Analytical Cloning of the Cell Line

             18.1     OBJECTIVES

                      18.1.1 To assess the clonality of the Cell Line by [. . .
*** . . .].

             18.2     ACTIVITIES

                      18.2.1 Prepare a GLP study protocol and review with the
Customer.

                      18.2.2 Carry out [. . . *** . . .].

                      18.2.3 Carry out [. . . *** . . .].

                      18.2.4 Analyse [. . . *** . . .].

                      18.2.5 Issue a report of activities to the Customer.

             18.3     TIMESCALE

                      Stage 18 will be complete on issue of the report of
activities and it is estimated that this will be issued [. . . *** . . .] from
commencement of Stage 18."

* CONFIDENTIAL TREATMENT REQUESTED

                                       8.

<PAGE>   9




         6.       The following Clauses shall be added to Schedule 4:

                  6.1 "Any proposed amendments to the GLP or GMP study protocols
under which activities in Stages 13, 14, 15, 16 and 17 of the Services are being
performed by Lonza, that Lonza consider to be significant, shall be submitted to
the Customer prior to implementation for approval by the Customer. The Customer
shall notify Lonza within 5 days of receipt of a proposed amendment its approval
or otherwise, if no response is received Lonza shall consider the amendment to
be approved. All deviations to the said GLP or GMP study protocols shall be
notified to the Customer, and follow-up actions will be agreed between Lonza and
the Customer."

                  6.2 "Lonza will notify the Customer in advance, in writing, of
any proposed changes to the activities outlined in Schedule 2 of the Services.
The Customer will review the proposed changes and inform Lonza within 7 days of
receiving such notification of its approval or otherwise of the proposed
changes. Lonza will not change the work programme outlined in Schedule 2 unless
by agreement with the Customer."

                  6.3 "Lonza will inform the Customer of any significant GMP
deviations during performance of the Services within 48 hours of the occurrence
of the deviation."

         7.       The following shall be added to Clauses 1 and 2 of Schedule 3:

                  "1       Price

                           In consideration for Lonza carrying out the Services
as detailed in Schedule 2 (Stages 12, 13, 14, 17a and 18) the Customer shall pay
Lonza as follows:-

<TABLE>
<CAPTION>
=============================================================================
                                                          PRICE (UK
                           STAGE                          STERLING)
- -----------------------------------------------------------------------------
<S>                                                       <C>
Stage 12 - Production and Characterisation of a Post-     L.[...***...](1)
Production Cell Bank for the Cell Line 
- -----------------------------------------------------------------------------
Stage 13 - Consistency Studies on Manufacture of          L.[...***...]
Product 
- -----------------------------------------------------------------------------
Stage 14 - Stability of Partially Purified Product at     L.[...***...]
Stages during the Manufacturing Process
(Intermediates Stability Study) 
- -----------------------------------------------------------------------------
Stage 17a- Validation of A280 and Protein A Product
Release Assays for Bulk Purified Product 
- -----------------------------------------------------------------------------
                                        A280              L.[...***...]
                                        Protein A         L.[...***...]
- -----------------------------------------------------------------------------
Stage 18 - Analytical Cloning of the Cell Line            L.[...***...]
=============================================================================
</TABLE>

    (1)The Price for this Stage does not include Testing Laboratory charges
which will be passed on directly to the Customer.

* CONFIDENTIAL TREATMENT REQUESTED

                                       9.

<PAGE>   10



         2.       PAYMENT

                  Payment by the Customer of the Price for Stages 12, 13, 14,
17a and 18 shall be made against Lonza's invoices as follows:

                  2.1 For Stage 12

                      50% (L.[...***...]) upon commencement of Stage 12 50%
                      (L.[...***...]) upon completion of Stage 12 Testing House
                      Laboratory charges will be invoiced on completion of Stage
                      12.

                  2.2 For Stage 13

                      50% (L.[...***...]) upon commencement of Stage 13
                      50% (L.[...***...]) upon completion of Stage 13

                  2.3 For Stage 14

                      50% (L.[...***...]) upon commencement of Stage 14
                      50% (L.[...***...]) upon completion of Stage 14

                  2.4 For Stage 17a

                      50% of the total Price for Stage 17a (L.[...***...]) upon
                      commencement of Stage 17a 
                      50% of the Price for the A280 assay (L.[...***...]) upon
                      completion of the Services on the A280 assay.
                      50% of the Price for the Protein A assay (L.[...***...])
                      upon completion of the Services on the Protein A assay.

                  2.5 For Stage 18

                      50% (L.[...***...]) upon commencement of StaGE 18
                      50% (L.[...***...]) upon completion of Stage 18"

* CONFIDENTIAL TREATMENT REQUESTED

                                       10.

<PAGE>   11




         8.       Save as expressly provided herein, the terms and conditions 
of the Agreement shall continue in full force and effect.

         AS WITNESS the hands of the duly authorised representatives of the
parties hereto the day and year first above written.

Signed for and on behalf of:


LONZA BIOLOGICS                             COULTER PHARMACEUTICAL INC.

By:    /s/ Simon Sturge                     By:    /s/ Michael F. Bigham
  -----------------------------               ---------------------------------
Title: Chief Executive Officer              Title: President and Chief Executive
     --------------------------                  -------------------------------
                                                   Officer
                                                 -------------------------------


                                       11.


<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          11,368
<SECURITIES>                                    29,670
<RECEIVABLES>                                      182
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                41,590
<PP&E>                                           1,630
<DEPRECIATION>                                     115
<TOTAL-ASSETS>                                  43,487
<CURRENT-LIABILITIES>                            4,391
<BONDS>                                              0
                                0
                                          0
<COMMON>                                            10
<OTHER-SE>                                      36,873
<TOTAL-LIABILITY-AND-EQUITY>                    43,487
<SALES>                                              0
<TOTAL-REVENUES>                                     0
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                 5,519
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 113
<INCOME-PRETAX>                                (4,994)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (4,994)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (4,994)
<EPS-PRIMARY>                                   (0.48)
<EPS-DILUTED>                                        0
        

</TABLE>


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