NEUROGEN CORP
10-Q, 1997-11-14
PHARMACEUTICAL PREPARATIONS
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549


                                   FORM 10-Q
                                        

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
               For the quarterly period ended September 30, 1997
                                       OR
               TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                         Commission File Number 0-18311


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


                    Delaware                      22-2845714
        (State or other jurisdiction of       (I.R.S. Employer
        incorporation or organization)       Identification No.)

        35 Northeast Industrial Road
            Branford, Connecticut                   06405
   (Address of principal executive offices)      (Zip Code)


                                 (203) 488-8201
              (Registrant's telephone number, including area code)


  Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                            Yes  X            No
                                ---              ___              


  As of November 13, 1997 the registrant had 14,390,786 shares of Common Stock
outstanding.
<PAGE>
 
                              NEUROGEN CORPORATION
                                     INDEX

                                        
                                                                         Page
                                                                        Number
                                                                        ------
                         Part I - Financial Information


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

          Balance Sheets at September 30, 1997 and
           December 31, 1996.......................................      1,2
 
          Statements of Operations for the three-month and 
            nine-month periods  ended September 30, 1997 and 1996..        3
          Statements of Cash Flows for the nine-month period ended  
            September 30, 1997 and 1996............................        4
          Notes to Financial Statements............................      5-6
 
Item 2.  Management's Discussion and Analysis of Financial 
           Condition and Results of Operations.....................     7-11


                          Part II - Other Information

Item 1.  Legal Proceedings.........................................       12

Item 2.  Changes in Securities.....................................       12

Item 3.  Defaults upon Senior Securities...........................       12

Item 4.  Submission of Matters to a Vote of Security Holders.......       12

Item 5.  Other Information.........................................       12

Item 6.  Exhibits and Reports on Form 8-K..........................       12

Signature    ......................................................       14

Exhibit Index......................................................    15-18


                                       i
<PAGE>
 
                        PART I - FINANCIAL INFORMATION

ITEM 1 - FINANCIAL STATEMENTS

                             NEUROGEN CORPORATION
                                BALANCE SHEETS
                                (In thousands)

<TABLE> 
<CAPTION>                                                     
                                                   SEPTEMBER 30,       DECEMBER 31,
                                                       1997               1996
                                                       ----               ----
                                                   (UNAUDITED)          (AUDITED)
                                                ----------------      ---------------
<S>                                             <C>                   <C> 
                          Assets
Current assets:
  Cash and cash equivalents                             $ 66,307        $ 62,823
  Marketable securities                                   20,625          32,314
  Receivables from corporate partners                      1,227             460
  Other current assets                                       762           1,132
                                                ----------------      --------------- 

    Total current assets                                  88,921          96,729

Property, plant & equipment:
  Land and land improvements                                 523             523
  Building and building improvements                       8,804           8,679
  Leasehold improvements                                   4,026           4,005
  Equipment                                                7,455           5,903
  Furniture                                                  660             311
  Construction in progress                                 6,063             440
                                                ----------------      --------------- 
                                                          27,531          19,861
  Less accumulated depreciation and amortization           4,333           3,136
                                                ----------------      --------------- 

    Net property, plant and equipment                     23,198          16,725
Other assets, net                                            370             415
                                                ----------------      --------------- 
                                                        $112,489        $113,869
                                                ================      ===============
                                              
</TABLE> 

See accompanying notes to financial statements.

                                       1
<PAGE>
 
                             NEUROGEN CORPORATION
                                BALANCE SHEETS
                     (In thousands, except per share data)

<TABLE> 
<CAPTION> 
                                                                   SEPTEMBER 30,      DECEMBER 31,
                                                                      1997                1996
                                                                  (UNAUDITED)          (AUDITED) 
                                                               -----------------   ---------------
<S>                                                              <C>               <C> 
            Liabilities & Stockholders' Equity
Current Liabilities:
  Accounts payable and accrued expenses                          $   3,138             $   3,010
  Unearned revenue from corporate partners                             200                 4,100
  Current portion of mortgage payable                                  199                   181
                                                               -----------------   --------------                   
                                                                                  
    Total current liabilities                                        3,537                 7,291
                                                                                  
Mortgage payable, excluding current portion                            128                   279
Other compensation                                                      54                    54 
                                                               -----------------   --------------                   
    Total liabilities                                                3,719                 7,624
                                                                                  
Stockholders' Equity:                                                             
  Preferred stock, par value $.025 per share                                      
     Authorized 2,000,000 shares; none issued                           -                      -   
  Common stock, par value $.025 per share                                         
     Authorized 30,000,000 shares; issued and outstanding                         
     14,380,933 shares at September 30, 1997 and                                  
     14,252,404 shares at December 31, 1996                            360                   356
  Additional paid-in capital                                       109,261               108,491
  Retained earnings (defecit)                                         (846)               (2,519)
  Unrealized loss on marketable securities                              (5)                  (83)
                                                               -----------------   --------------                   

    Total stockholders' equity                                     108,770               106,245
                                                               -----------------   --------------                   
                                                                 $ 112,489             $ 113,869
                                                               =================   ==============
</TABLE> 

See accompanying notes to financial statements.

                                       2
<PAGE>
 
                             NEUROGEN CORPORATION
                           STATEMENTS OF OPERATIONS
                                (In thousands)

<TABLE> 
<CAPTION> 
                                                      THREE MONTHS       THREE MONTHS         NINE MONTHS      NINE MONTHS
                                                         ENDED               ENDED              ENDED               ENDED
                                                    SEPT. 30, 1997     SEPT. 30, 1996      SEPT. 30, 1997    SEPT. 30, 1996
                                                      (UNAUDITIED)       (UNAUDITIED)        (UNAUDITIED)      (UNAUDITIED)
                                                    ---------------    ---------------     ---------------   --------------- 
<S>                                                 <C>                <C>             <C>           <C>     <C> 
Operating revenues:                                                                    
  License fees                                       $           -     $            -      $        3,000    $       3,000
  Research and Development                                   3,378              3,511              11,305           10,700
                                                    ---------------    ---------------     ---------------   --------------- 
    Total operating revenues                                 3,378              3,511              14,305           13,700
                                                                                                               
Operating Expenses:                                                                                            
  Research and development                                   4,811              3,578              13,685           10,009
  General and administrative                                   831                861               2,751            2,252
                                                    ---------------    ---------------     ---------------   --------------- 
    Total operating expenses                                 5,642              4,439              16,436           12,261
                                                                                                               
                                                    ---------------    ---------------     ---------------   --------------- 
      Total operating income (loss)                         (2,264)              (928)             (2,131)           1,439
                                                                                                               
Other income (expense):                                                                                        
  Investment income                                          1,350              1,274               3,867            3,762
  Interest expense                                              (8)               (14)               (28)             (41)
                                                    ---------------    ---------------     ---------------   ---------------  
    Total other income, net                                  1,342              1,260               3,839            3,721
                                                    ---------------    ---------------     ---------------   --------------- 
                                                                                                               
Income (loss) before provision for income taxes               (922)               332               1,708            5,160
Provision for income taxes                                       -                  -                  35              100
                                                    ---------------    ---------------     ---------------   --------------- 
Net income (loss)                                    $        (922)     $         332      $        1,673    $       5,060
                                                    ===============    ===============     ===============   =============== 
                                                                                                               
Earnings (loss) per share:                                                                                     
    Primary                                          $       (0.06)     $        0.02      $         0.11    $        0.33
                                                    ===============    ===============     ===============   =============== 
                                                                                                               
    Fully diluted                                    $       (0.06)     $        0.02      $         0.11    $        0.33
                                                    ===============    ===============     ===============   =============== 
                                                                                                               
Shares used in calculation of                                                                                  
  earnings (loss) per share:                                                                                   
    Primary                                                 14,362             15,385              15,390           15,466
                                                    ===============    ===============     ===============   ===============    
    Fully diluted                                           14,362             15,449              15,682           15,466
                                                    ===============    ===============     ===============   ===============    
                                                                                         
</TABLE> 

See accompanying notes to financial statements 

                                       3
<PAGE>
 
                             NEUROGEN CORPORATION
                           STATEMENTS OF CASH FLOWS
                                (In thousands)

<TABLE> 
<CAPTION> 
                                                                       NINE MONTHS            NINE MONTHS
                                                                    ENDED SEPTEMBER 30,    ENDED SEPTEMBER 30,
                                                                        1997                     1996
                                                                       (UNAUDITED)            (UNAUDITED)
                                                                   -------------------    ------------------- 
<S>                                                                <C>                        <C> 
Cash flows from operating activities:                                                   
  Net income                                                            $  1,673                 $  5,060
  Adjustments to reconcile net income                                                     
    to net cash used in operating                                                           
    activities:                                                                           
    Depreciation and amortization expense                                  1,226                      677
    Net gain on sale of assets                                                 4                      (16)
  Changes in operating assets and liabilities:                                              
    Increase (decrease) in accounts payable and accrued expenses             129                     (449)
    Decrease in unearned revenue from corporate partners                  (3,900)                     (55)
    Decrease in other current assets                                         369                      667
    Increase in receivable from corporate partners                          (767)                  (1,869)
    Decrease in other assets, net                                             29                       84
                                                                   -------------------    ------------------- 
       Net cash provided by  (used in) operating                                            
         activities                                                       (1,237)                   4,099
                                                                                          
Cash flows from investing activities:                                                       
    Purchase of plant and equipment                                       (7,712)                  (3,204)
    Purchases of marketable securities                                   (33,214)                 (26,759)
    Maturities and sales of marketable securities                         44,981                   51,538
    Proceeds from sale of asset                                               26                      109
                                                                   -------------------    ------------------- 

      Net cash provided by (used in) investing activities                  4,081                   21,684
                                                                                          
Cash flows from financing activities:                                                       
  Exercise of employee stock options                                         774                    1,581
  Principal payments under mortgage payable                                 (134)                    (118)
                                                                   -------------------    ------------------- 
                                                                                            
    Net cash provided by financing                                                          
      activities                                                             640                    1,463
                                                                   -------------------    ------------------- 
                                                                                            
     Net increase (decrease) in cash and cash equivalents                  3,484                   27,246
                                                                                          
Cash and cash equivalents at beginning of period                          62,823                   26,005
                                                                   -------------------    ------------------- 
                                                                                            
Cash and cash equivalents at end of period                             $  66,307                 $ 53,251
                                                                   ===================   ====================
                                                                                         
</TABLE> 

See accompanying notes to financial statements.

                                                             

                                       4
<PAGE>
 
                              NEUROGEN CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
                               SEPTEMBER 30, 1997
                                  (UNAUDITED)

                                        


(1)  Basis of Presentation and Summary of Significant Accounting Policies
     ---------------------------------------------------------------------

     The unaudited financial statements have been prepared  from the books and
     records of Neurogen Corporation (the "Company") in accordance with
     generally accepted accounting principles for interim financial information
     pursuant to Rule 10-01 of Regulation S-X.  Accordingly, they do not include
     all of the information and footnotes required by generally accepted
     accounting principles for complete financial statements.  In the opinion of
     management, all adjustments (consisting of normal recurring accruals)
     considered necessary for a fair presentation have been included.  Interim
     results are not necessarily indicative of the results that may be expected
     for the fiscal year.


(2)  Marketable Securities
     ---------------------

     Marketable securities consist principally of debt securities with
     maturities of three months to five years and have been classified as
     available for sale securities. Management considers these investments,
     which represent funds available for current operations, an integral
     component of its cash management activities. Accordingly, marketable
     securities have been classified as current assets in the balance sheets.


(3)  Adoption of New Accounting Pronouncements
     -----------------------------------------

     In June 1997, the FASB issued Statement No. 130, "Reporting Comprehensive
     Income" and Statement No. 131. "Disclosures About Segments of an Enterprise
     and Related Information."  Statement No. 130 establishes standards for the
     reporting and display of comprehensive income and its components.
     Statement No. 131 establishes standards for the way that public companies
     report information about operating segments in financial statements.  This
     Statement supersedes Statement No. 14, "Financial Reporting for Segments of
     a Business Enterprise," but retains the requirements to report information
     about major customers.  Statements 130 and 131 are effective for the
     Company in fiscal 1998.  The Company does not believe that the adoption of
     these Statements will have a material effect on the Company's financial
     statements.

     In February 1997, the Financial Accounting Standards Board issued Statement
     No. 128, Earnings per Share, which is required to be adopted on December
     31, 1997. At that time, the Company will be required to change the method
     currently used to compute earnings per share and to restate all prior
     periods. Under the new requirements for calculating primary earnings per
     share, the dilutive effect of stock options will be excluded. The impact is
     expected to have no change in primary earnings per share 

                                       5
<PAGE>
 
     for the third quarter ended September 30, 1997 and September 30, 1996,
     respectively. For the nine month period ended September 30, 1997 and
     September 30, 1996 the impact is expected to have a $.01 and a $.03
     increase respectively. The impact of Statement 128 on the calculation of
     fully diluted earnings per share for these periods is not expected to be
     material.

                                       6
<PAGE>
 
ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
         FINANCIAL CONDITION AND RESULTS OF OPERATIONS


       Since its inception in September 1987, Neurogen has been engaged in the
     discovery and development of drugs. The Company has not derived any revenue
     from product sales and, excluding the effect of one-time license fees
     received in 1996 from Schering-Plough and American Home Products and from
     Schering-Plough and Pfizer in 1995, expects to incur significant losses in
     most years prior to deriving any such product revenues. Revenues to date
     have come from three collaborative research agreements entered into with
     Pfizer, one collaboration with Schering-Plough, one license agreement with
     American Home Products and from interest income.

     RESULTS OF OPERATIONS
 
       Results of operations may vary from period to period depending on
     numerous factors, including the timing of income earned under existing or
     future strategic alliances, joint ventures or financings, if any, the
     progress of the Company's research and development projects, technological
     advances and determinations as to the commercial potential of proposed
     products. Neurogen expects research and development costs to increase
     significantly over the next several years as its drug development programs
     progress. In addition, general and administrative expenses necessary to
     support the expanded research and development activities are expected to
     increase for the foreseeable future.


     THREE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996

       The Company's operating revenues decreased to $3.3 million for the three
     months ended September 30, 1997 as compared to $3.5 million for the same
     period in 1996 due to a reduction in the level of research required, and a
     corresponding reduction in research funding received, pursuant to an
     extension in December 1996 of the 1992 and 1994 Pfizer agreements, as
     described below. Research and development revenues include amounts received
     from Pfizer and Schering-Plough, under separate collaborations, to fund
     Neurogen's collaborative research programs and, in the case of its NPY-
     obesity collaboration with Pfizer, to reimburse Neurogen for certain
     expenses for the clinical development of the Company's lead anti-obesity
     drug NGD 95-1.

       Research and development costs increased 34 percent to $4.8 million for
     the three-month period ended September 30, 1997 as compared to the same
     period in 1996.  The increase is due to increases in research and
     development personnel and an expansion of Neurogen's AIDD (Accelerated
     Intelligent Drug Design) program.  Research and development costs
     represented 85 percent of total operating expenses for the second quarter
     of 1997 as compared to 81 percent for the same period in 1996.

       General and administrative expenses decreased 3 percent to $0.8 million
     for the three-month period ended September 30, 1997 as compared to the same
     period in 1996.

                                       7
<PAGE>
 
       Other income consisting primarily of interest income, and gains and
     losses from invested cash and marketable securities increased 7 percent for
     the third quarter of 1997 as compared to the same period in  1996 due to a
     slightly higher rate of return offset by a lower investment balance.

       The Company recognized a net loss of $0.9 million for the three months
     ended September 30, 1997 as compared with a net income of $0.3 million for
     the same period in 1996.  The decrease in earnings is primarily due to the
     increase in operating expenses for the third quarter of 1997.

     NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996

       The Company's research and development revenues increased to $11.3
     million for the nine months ended September 30, 1997 as compared to $10.7
     million for the same period in 1996 due to the receipt of a clinic
     development milestone pursuant to the 1992 Pfizer Agreement and an increase
     in the reimbursement of expenses pursuant to the 1995 Pfizer Agreement.

       Research and development expenses increased 36 percent to $13.7 million
     for the nine months ended September 30, 1997 as compared to the same period
     in 1996. The increase is due to increases in research and development
     personnel, an increase in clinical development costs and an expansion of
     Neurogen's AIDD (Accelerated Intelligent Drug Design) program.  Research
     and development costs represented 83 and 81 percent of total operating
     expenses for each of the nine month periods ended September 30, 1997 and
     1996 respectively.

       General and administrative expenses increased 22 percent to $2.8 million
     for the nine months ended September 30, 1997 as compared to the same period
     in 1996. This increase is due to an increased level of administrative
     expenses necessary to support a growing research staff.

       Other income consisting primarily of interest income, and gains and
     losses from invested cash and marketable securities increased to $3.8
     million for the nine months ended September 30, 1997 as compared to $3.7
     million in the same period in 1996 due to a slightly higher rate of return
     offset by a lower investment balance.

       The Company recognized net income of $1.7 million for the nine months
     ended September 30, 1997 as compared with net income of $5.1 million for
     the same period in 1996.  The decrease in earnings is primarily due to the
     increase in operating expenses for the nine months ended September 30, 1997
     as compared to the same period in 1996.


     LIQUIDITY AND CAPITAL RESOURCES

       At September 30, 1997 and December 31, 1996, cash, cash equivalents and
     marketable securities were in the aggregate $86.9 million and $95.1 million
     respectively.  While the Company's aggregate level of cash, cash
     equivalents and marketable securities decreased slightly during the 

                                       8
<PAGE>
 
     third quarter of 1997, these levels have fluctuated significantly in the
     past and are expected to do so in the future as a result of the factors
     described below.

       Neurogen's cash requirements to date have been met by the proceeds of its
     financing activities, amounts received pursuant to collaborative
     arrangements and interest earned on invested funds. The Company's financing
     activities include three private placement offerings of its common stock
     prior to its initial public offering, underwritten public offerings of the
     Company's common stock in 1989, 1991 and 1995, and the private sale of
     common stock to Pfizer in connection with entering into the Pfizer
     Agreements and to American Home Products in the American Home Products
     Agreement.  Total funding received from these financing activities was
     approximately $105.6 million. The Company's expenditures have been
     primarily to fund research and development and general and administrative
     expenses and to construct and equip its research and development
     facilities.


       In the first quarter of 1992, the Company entered into a collaborative
     agreement, the "1992 Pfizer Agreement" pursuant to which Pfizer made a
     $13.8 million equity investment in the Company. Under this agreement, the
     Company received $4.6 million in each year from 1992 through 1996 and is
     receiving additional funding pursuant to a December 1996 extension, as
     described below. Neurogen could also receive milestone payments of up to
     $12.5 million if certain development and regulatory objectives are achieved
     regarding its products subject to the collaboration. In return, Pfizer
     received the exclusive rights to manufacture and market collaboration
     anxiolytics and cognition enhancers that act through the family of
     receptors which interact with the neuro-transmitter gamma-aminobutyric
     acid, or GABA, and for which it will pay Neurogen royalties based upon net
     sales levels, if any, for such products.  As of September 30, 1997, Pfizer
     had provided $24.9 million of research funding to the Company pursuant to
     the 1992 Pfizer Agreement and $0.3 million due to the completion of a
     clinical development milestone,  in addition to its $13.8 million equity
     investment in 1992.

       Neurogen and Pfizer entered into their second collaborative agreement,
     the "1994 Pfizer Agreement", in July 1994, pursuant to which Pfizer made an
     additional $9.9 million equity investment in the Company. Under this
     agreement, the Company received approximately $7.4 million during the
     three-year period which commenced July 1, 1994, to fund Neurogen's sleep
     disorder program and is receiving additional funding pursuant to a December
     1996 extension, as described below. Neurogen could also receive milestone
     payments of up to $3.3 million if certain development and regulatory
     objectives are achieved regarding its products subject to the
     collaboration. As part of this second collaboration, Pfizer received the
     exclusive rights to manufacture and market GABA-based sleep disorder
     products for which it will pay Neurogen royalties depending upon net sales
     levels, if any.  As of September 30, 1997, Pfizer had provided $8.1 of
     research funding to the Company pursuant to the 1994 Pfizer Agreement, in
     addition to its $9.9 million equity investment in 1994.

                                       9
<PAGE>
 
       In December 1996, Neurogen and Pfizer extended the research programs
     under the 1992 Pfizer Agreement and 1994 Pfizer Agreement through 1998.
     Pursuant to the extension agreement, Neurogen expects to receive $5.3
     million in each of 1997 and 1998 for research funding of the Company's
     GABA-based anxiety, cognition enhancement and sleep disorders programs.

       Under both the 1992 Pfizer Agreement and the 1994 Pfizer Agreement, in
     addition to making the equity investments and  the research and milestone
     payments noted above, Pfizer is responsible for funding the cost of all
     clinical development and the manufacturing and marketing, if any, of drugs
     developed from the collaborations.

       Neurogen and Pfizer entered into their third collaborative agreement, the
     "1995 Pfizer Agreement", in November 1995, pursuant to which Pfizer made an
     additional $16.5 million equity investment in the Company bringing Pfizer's
     ownership of the Company's common stock up to 21 percent and paid a $3.5
     million license fee. The Company is scheduled to receive approximately $7.2
     million during the three-year period which commenced November 1, 1995, to
     fund Neurogen's neuropeptide Y (NPY) eating disorders program and may
     receive up to an additional $2.4 million per year for a fourth and fifth
     year should Pfizer exercise its option to extend the research program under
     the collaboration. Neurogen could also receive milestone payments of up to
     approximately $28 million if certain development and regulatory objectives
     are achieved regarding its products subject to the collaboration. As part
     of this third collaboration, Pfizer received the exclusive worldwide rights
     to manufacture and market NPY-based collaboration compounds, subject to
     certain rights retained by Neurogen. Pursuant to the 1995 Pfizer Agreement,
     Neurogen will fund a minority share of early stage development costs and
     has retained the right to manufacture any collaboration products in NAFTA
     countries and has retained a profit sharing option with respect to product
     sales in NAFTA countries. If Neurogen exercises the profit sharing option,
     it will fund a portion of the cost of late stage clinical trials and
     marketing costs and in return receive a specified percentage of any profit
     generated by sales of collaboration products in NAFTA countries. If
     Neurogen chooses not to exercise its profit-sharing option, Pfizer would
     pay Neurogen royalties on drugs marketed in NAFTA countries and would fund
     a majority of early stage and all late stage development and marketing
     expenses. In either case Neurogen would be entitled to royalties on drugs
     marketed in non-NAFTA countries. As of September 30, 1997, Pfizer had
     provided $4.8 million in research funding (including $0.2 million in
     unearned revenues) pursuant to the 1995 Pfizer Agreement.

       In June 1995, Neurogen and Schering-Plough entered into an agreement,
     the "Schering-Plough Agreement" to collaborate in the discovery and
     development of drugs for the treatment of schizophrenia and other disorders
     which act through the dopamine family of receptors. Pursuant to the
     Schering-Plough Agreement, the Company received one-time license fees of
     $14 million for rights relating to Neurogen's dopamine program and $3
     million in each of 1995 and 1996 for the right to test certain of
     Neurogen's combinatorial chemistry libraries in selected non-CNS assays.
     Neurogen received scheduled funding aggregating approximately $7.2 million
     during the two-year period 

                                       10
<PAGE>
 
     which commenced June 28, 1995, for research and development funding of the
     Company's dopamine program. In March 1997, Schering-Plough elected to
     extend the research program under the Schering-Plough Agreement for an
     additional one-year period, through June 1998 and to pay Neurogen $3.6
     million to fund such research. The Company may receive additional research
     and development funding of up to $3.6 million per year for two additional
     one-year periods depending on whether and the extent to which Schering-
     Plough exercises its right to further extend the research program under the
     collaboration. Neurogen could also receive milestone payments of up to
     approximately $32 million if certain development and regulatory objectives
     are achieved regarding its products subject to the collaboration. In
     return, Schering-Plough received the exclusive worldwide license to market
     products subject to the collaboration and Neurogen retained the rights to
     receive royalties based on net sales levels, if any, and an option to
     manufacture products for the United States market. As of September 30,
     1997, Schering-Plough had provided $8.1 million in research pursuant to the
     Schering-Plough Agreement. In addition to the payments described above,
     Schering-Plough is responsible for funding the cost of all clinical
     development and marketing, if any, of drugs subject to the collaboration.

       In the fourth quarter of 1996, Neurogen entered into an agreement, the
     "American Home Products Agreement", acting through its Wyeth-Ayerst
     Laboratories division.  Under the terms of the agreement, Neurogen received
     $750,000 in license fees for ADCI, a small molecule pharmaceutical that
     Neurogen has been developing for the treatment of epilepsy and related
     disorders, and $750,000 for 37,442 shares of common stock.  Neurogen may
     receive up to an additional $11.0 million in the form of license fees,
     equity investment and milestone payments on world-wide sales of ADCI.

       The Company plans to use its cash balance for its research and
     development activities, working capital and general corporate purposes.
     Neurogen anticipates that its current cash balance, as supplemented by
     research funding pursuant to the Pfizer Agreements and the Schering-Plough
     Agreement, will be sufficient to fund its current and planned operations
     through 2000.  However, Neurogen's funding requirements may change and will
     depend upon numerous factors, including but not limited to, the progress of
     the Company's research and development programs, the timing and results of
     preclinical testing and clinical studies, the timing of regulatory
     approvals, technological advances, determinations as to the commercial
     potential of its proposed products, the status of competitive products and
     the ability of the Company to establish and maintain collaborative
     arrangements with others for the purpose of funding certain research and
     development programs, conducting clinical studies, obtaining regulatory
     approvals and, if such approvals are obtained, manufacturing and marketing
     products.  The Company anticipates that it may augment its cash balance
     through financing transactions, including the issuance of debt or equity
     securities and further corporate alliances.  No arrangements have been
     entered into for any future financing and no assurances can be given that
     adequate levels of additional funding can be obtained on favorable terms,
     if at all.

                                       11
<PAGE>
 
       As of December 31, 1996, the Company had approximately $11.5 million of
     net operating loss carryforwards available for federal income tax purposes
     which expire from the years 2003 through 2009.  The Company had
     approximately $9.4 million of Connecticut state tax net operating loss
     carryforwards as of December 31, 1996 which expire in the years 1997
     through 1999.  Because of "change in ownership" provisions of the Tax
     Reform Act of 1986, the Company's utilization of its net operating loss
     carryforwards may be subject to an annual limitation in future periods.



                          Part II - Other Information


ITEM 1. LEGAL PROCEEDINGS

        Not applicable for the third quarter ended September 30, 1997.


ITEM 2. CHANGES IN SECURITIES

        Not applicable for the third quarter ended September 30, 1997.


ITEM 3. DEFAULTS UPON SENIOR SECURITIES

        Not applicable for the third quarter ended September 30, 1997.


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

        Not applicable for the third quarter ended September 30, 1997.


ITEM 5. OTHER INFORMATION

        Not applicable for the third quarter ended September 30, 1997.


ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

        (a) See Exhibit Index on page 11.

        (b) None

                                       12
<PAGE>
 
SAFE HARBOR STATEMENT


Statements which are not historical facts, including statements about the
Company's confidence and strategies, the status of various product development
programs, the sufficiency of cash to fund planned operations and the Company's
expectations concerning its development compounds, drug discovery technologies
and opportunities in the pharmaceutical marketplace are "forward looking
statements" within the meaning of the Private Securities Litigations Reform Act
of 1995 that involve risks and uncertainties and are not guarantees of future
performance.  These risks include, but are not limited to, difficulties or
delays in development, testing, regulatory approval, production and marketing of
any of the Company's drug candidates, the failure to attract or retain
scientific management personnel, any unexpected adverse side effects or
inadequate therapeutic efficacy of the Company's drug candidates which could
slow or prevent product development efforts, competition within the Company's
anticipated product markets, the Company's dependence on corporate partners with
respect to research and development funding, regulatory filings and
manufacturing and marketing expertise, the uncertainty of product development in
the pharmaceutical industry, inability to obtain sufficient funds through future
collaborative arrangements, equity or debt financings or other sources to
continue the operation of the Company's business, risk that patents and
confidentiality agreements will not adequately protect the Company's
intellectual property or trade secrets, dependence upon third parties for the
manufacture of potential products, inexperience in manufacturing and lack of
internal manufacturing capabilities, dependence on third parties to market
potential products, lack of sales and marketing capabilities, potential
unavailability or inadequacy of medical insurance or other third-party
reimbursement for the cost of purchases of the Company's products, and other
risks detailed in the Company's Securities and Exchange Commission filings,
including its Annual Report on Form 10-K for the year ended December 31, 1996,
each of which could adversely affect the Company's business and the accuracy of
the forward-looking statements contained herein.

                                       13
<PAGE>
 
                                   Signature


     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.



                                      NEUROGEN CORPORATION



                                      By:/s/   STEPHEN R. DAVIS
                                        -----------------------
                                         Stephen R. Davis
                                         Vice President-Finance and
                                         Chief Financial Officer


Date:  November 10, 1997

                                       14
<PAGE>
 
                                 Exhibit Index
                                 -------------


     Exhibit
     -------
     Number
     ------
     10.1   -  Neurogen Corporation Stock Option Plan, as amended (incorporated
               by reference to Exhibit 10.1 to the Company's Form 10-K for the
               fiscal year ended December 31, 1991).

     10.2   -  Form of Stock Option Agreement currently used in connection with
               the grant of options under Neurogen Corporation Stock Option
               Plan (incorporated by reference to Exhibit 10.2 to the
               Company's Form 10-K for the fiscal year ended December 31,
               1992).

     10.3   -  Neurogen Corporation 1993 Omnibus Incentive Plan, as amended
               (incorporated by reference to Exhibit 10.3 to the Company's
               Form 10-K for the fiscal year ended December 31, 1993).

     10.4   -  Form of Stock Option Agreement currently used in connection with
               the grant of options under Neurogen Corporation 1993 Omnibus
               Incentive Plan (incorporated by reference to Exhibit 10.4 to
               the Company's Form 10-K for the fiscal year ended December 31,
               1993).

     10.5   -  Neurogen Corporation 1993 Non-Employee Directors Stock Option
               Program (incorporated by reference to Exhibit 10.5 to the
               Company's Form 10-K for the fiscal year ended December 31,
               1993).

     10.6   -  Form of Stock Option Agreement currently used in connection with
               the grant of options under Neurogen Corporation 1993 Non-
               Employee Directors Stock Option Program (incorporated by
               reference to Exhibit 10.6 to the Company's Form 10-K for the
               fiscal year ended December 31, 1993).

     10.7   -  Employment Contract between the Company and Harry H. Penner, Jr.,
               dated as of October 12, 1993 (incorporated by reference to
               Exhibit 10.7  to the Company's Form 10-K for the fiscal year
               ended December 31, 1993).

     10.8   -  Employment Contract between the Company and John F. Tallman,
               dated as of December 1, 1993 (incorporated by reference to
               Exhibit 10.25 to the Company's Form 10-Q for the quarterly
               period ended September 30, 1994).

     10.9   -  Open-End Mortgage Deed and Security Agreement between the Company
               and Orion Machinery & Engineering Corp., dated March 16, 1989
               (incorporated by reference to Exhibit 10.15 to Registration
               Statement  No. 33-29709 on Form S-1).

     10.10  -  Form of Proprietary Information and Inventions Agreement
               (incorporated by reference to Exhibit 10.31 to Registration
               Statement No. 33-29709 on Form S-1).

                                       15
<PAGE>
 
     10.11  -  Warrant to Purchase 47,058 Shares of Common Stock to MMC/GATX
               Partnership No. I, dated February 20, 1991 (incorporated by
               reference to Exhibit 10.34 to the Company's Form 10-K for the
               fiscal year ended December 31, 1990).

     10.12  -  Collaborative Research Agreement  and License and Royalty
               Agreement between the Company and Pfizer Inc, dated as of
               January 1, 1992 (confidential treatment requested)
               (incorporated by reference to Exhibit 10.35 to the Company's
               Form 10-K for the fiscal year ended December 31, 1991).

     10.13  -  License Agreement between the Company and the National Technical
               Information Service, dated as of January 1, 1992 (incorporated
               by reference to Exhibit 10.36 to the Company's Form 10-K for
               the fiscal year ended December 31, 1991).

     10.14  -  Cooperative Research and Development Agreement between the
               Company and the National Institutes of Health, dated as of
               January 21, 1993 (incorporated by reference to Exhibit 10.37
               to the Company's Form 10-K for the fiscal year ended December
               31, 1991).

     10.15  -  Letter Agreement between the Company and Barry M. Bloom, dated
               January 12, 1994 (incorporated by reference to Exhibit 10.25
               to the Company's Form 10-K for the fiscal year ended December
               31, 1993).

     10.16  -  Letter Agreement between the Company and Robert H. Roth, dated
               April 14, 1994 (incorporated by reference to Exhibit 10.26 to
               the Company's Form 10-K for the fiscal year ended December 31,
               1994).

     10.17  -  Collaborative Research Agreement and License and Royalty
               Agreement between the Company and Pfizer Inc, dated as of July
               1, 1994 (confidential treatment requested) (incorporated by
               reference of Exhibit 10.1 to the Company's Form 10-Q for the
               quarterly period ended June 30, 1994).

     10.18  -  Stock Purchase Agreement between the Company and Pfizer dated as
               of July 1, 1994 (incorporated by reference to Exhibit 10.2 to
               the Company's Form 10-Q for the quarterly period ended June
               30, 1994).

     10.19  -  Registration Rights and Standstill Agreement among the Company
               and the Persons and Entities listed on Schedule I thereto,
               dated as of July 11, 1994 (incorporated by reference to
               Exhibit 10.29 to the Company's Form 10-Q for the quarterly
               period ended September 30, 1994).

     10.20  -  Collaboration and License Agreement and Screening Agreement
               between the Company and Schering-Plough Corporation
               (confidential treatment requested) (incorporated by reference
               to Exhibit 10.1 to the Company's Form 8-K dated July 28,
               1995).

                                       16
<PAGE>
 
     10.21  -  Lease Agreement between the Company and Commercial Building
               Associates dated as of August 30, 1995 (incorporated by
               reference to Exhibit 10.27 to the Company's Form 10-Q for the
               quarterly period ended September 30, 1995).

     10.22  -  Collaborative Research Agreement between the Company and Pfizer
               dated as of November 1, 1995 (confidential treatment
               requested) (incorporated by reference to Exhibit 10.1 of the
               Company's Form 8-K dated November 1, 1995).

     10.23  -  Development and Commercialization Agreement between the
               Company and Pfizer dated as of November 1, 1995 (confidential
               treatment requested) (incorporated by reference to Exhibit
               10.2 of the Company's Form 8-K dated November 1, 1995).

     10.24  -  Stock Purchase Agreement between the Company and Pfizer dated as
               of November 1, 1995 (incorporated by reference to Exhibit 10.3
               of the Company's Form 8-K dated November 1, 1995).

     10.25  -  Licensing Agreement dated as of November 25, 1996 between
               American Home Products Corporation, acting through its Wyeth-
               Ayerst Laboratories Division, and Neurogen Corporation
               (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference
               to Exhibit 10.1 of the Company's Form 8-K dated March 31,
               1997).

     10.26  -  Stock Purchase Agreement dated as of November 25, 1996 between
               American Home Products Corporation, acting through its Wyeth-
               Ayerst Laboratories Division, and Neurogen Corporation
               (CONFIDENTIAL TREATMENT REQUESTED) (incorporated by reference
               to Exhibit 10.1 of the Company's Form 8-K dated March 31,
               1997).

     11.1   -  Computation of Earnings per Common Share.
 
     27.1   -  Financial Data Schedule

                                       17

<PAGE>
 
                                                                    EXHIBIT 11.1

                             NEUROGEN CORPORATION
               COMPUTATION OF NET INCOME (LOSS) PER COMMON SHARE
       (in thousands, except Net Income (Loss) per Common Share amounts)


<TABLE> 
<CAPTION> 
                                          THREE MONTHS       THREE MONTHS       NINE MONTHS        NINE MONTHS
                                             ENDED              ENDED              ENDED              ENDED
                                         SEPT. 30, 1997     SEPT. 30, 1996     SEPT. 30, 1997     SEPT. 30, 1996
                                          (UNAUDITED)        (UNAUDITED)        (UNAUDITED)        (UNAUDITED)
                                         ---------------    ---------------    ---------------    --------------- 
<S>                                      <C>                <C>                <C>                <C> 
Primary:                                                                                           
                                                                                                   
Weighted average shares of                                                                         
  common stock outstanding                       14,362            14,192              14,332              14,118
                                                                                                   
Dilutive effect of :                                                                               
    Warrants                                         (1)               42                  36                  43
    Stock options                                    (1)            1,151               1,022               1,305
                                         ---------------    ---------------    ---------------    ---------------  
                                         
Common and common                                                                                  
  equivalent shares                              14,362            15,385              15,390              15,466
                                         ===============    ===============    ===============    =============== 
                                                                                                   
Net income (loss)                        $         (922)    $         332               1,673     $         5,060
                                         ===============    ===============    ===============    =============== 
                                                                                                   
Earnings (loss) per common and                                                                     
  common equivalent shares               $        (0.06)    $         .02      $         0.11                0.33
                                         ===============    ===============    ===============    =============== 
Fully Diluted:                                                                                     
Weighted average shares of                                                                         
  common stock outstanding                       14,362            14,192              14,332              14,118
                                         
Dilutive effect of :                                                                               
    Warrants                                         (1)               42                  36                  43
    Stock options                                    (1)            1,215               1,314               1,305
                                         ---------------    ---------------    ---------------    ---------------  
                                                                                                   
Common and common                                                                                  
  equivalent shares                              14,362            15,449              15,682              15,466
                                         ===============    ===============    ===============    ===============  
                                                                                                   
Net income (loss)                        $         (922)    $         332               1,673     $         5,060
                                         ===============    ===============    ===============    ===============  
                                                                                                   
                                                                                                   
Earnings (loss) per common and                                                                     
  common equivalent shares               $        (0.06)    $           .02    $         0.11                0.33
                                         ===============    ===============    ===============    ===============  

</TABLE> 

(1) The Common Stock Equivalents have not been included as their inclusion would
be antidilutive.


<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                          66,307
<SECURITIES>                                    20,625
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                88,921
<PP&E>                                          27,422
<DEPRECIATION>                                   4,333
<TOTAL-ASSETS>                                 112,489
<CURRENT-LIABILITIES>                            3,537
<BONDS>                                              0
                                0
                                          0
<COMMON>                                           360
<OTHER-SE>                                         (5)
<TOTAL-LIABILITY-AND-EQUITY>                   112,489
<SALES>                                              0
<TOTAL-REVENUES>                                14,305
<CGS>                                                0
<TOTAL-COSTS>                                   16,436
<OTHER-EXPENSES>                               (3,839)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  28
<INCOME-PRETAX>                                  1,708
<INCOME-TAX>                                        35
<INCOME-CONTINUING>                              1,673
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,673
<EPS-PRIMARY>                                      .11
<EPS-DILUTED>                                      .11
        

</TABLE>


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