CURAGEN CORP
10-Q, 1998-08-12
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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<PAGE>
 
                      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 QUARTERLY PERIOD ENDED JUNE 30, 1998

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

                        FOR THE TRANSITION PERIOD FROM   TO

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

                         Commission File Number 0-23223

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



           Delaware                                06-1331400 
(State or other jurisdiction of                 (I.R.S. Employer 
incorporation or organization)                 Identification No.)



      555 Long Wharf Drive, 11th Floor, New Haven, Connecticut      06511
              (Address of principal executive office)             (Zip Code)


       Registrant's telephone number, including area code: (203) 401-3330


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 [ ]


       The number of shares outstanding of the Registrant's Common Stock as of
July 31, 1998 was 13,160,107.
<PAGE>
 
                               CURAGEN CORPORATION
                                    FORM 10-Q
                                      INDEX


<TABLE> 
<CAPTION> 

PART I. Financial Information                                                             Page
                                                                                          ----
        <S>                                                                               <C> 
        Item 1. Financial Statements

                Condensed Balance Sheets,
                June 30, 1998 (unaudited) and December 31, 1997                              3

                Condensed Statements of Operations,
                for the Three and Six Months Ended June 30, 1998 and 1997 (unaudited)        4

                Condensed Statements of Cash Flows,
                for the Six Months Ended June 30, 1998 and 1997 (unaudited)                  5

                Notes to Condensed Financial Statements (unaudited)                      6 - 7

        Item 2. Management's Discussion and Analysis of Financial
                Condition and Results of Operations                                     8 - 10


PART II. Other Information


        Item 2. Changes in Securities and Use of Proceeds                                   11

        Item 5. Other Information                                                           11

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

Signatures                                                                                  13

Exhibit Index                                                                               14
</TABLE> 
<PAGE>
 
                              CURAGEN CORPORATION
                           CONDENSED BALANCE SHEETS

<TABLE>
<CAPTION> 
                                                                                     JUNE 30,              DECEMBER 31,
                                                                                      1998                    1997
                                                                                    ---------             --------------
                                                                                    (UNAUDITED)             (AUDITED)
<S>                                                                               <C>                     <C>        
ASSETS                                                                                                 
Current assets:                                                                                        
      Cash and cash equivalents                                                   $ 53,980,805            $ 17,417,161
      Grants receivable                                                                725,663                 421,564
      Accounts receivable                                                                    -                 166,750
      Prepaid expenses                                                                 517,031                 157,480
      Stock issuance costs                                                                   -               1,083,251
      Other current assets                                                               1,300                  13,883
                                                                                  ------------            ------------
           Total current assets                                                     55,224,799              19,260,089
                                                                                  ------------            ------------
                                                                                                       
Property and equipment, net                                                         11,989,604               6,920,196
Other assets                                                                           567,010                 338,744
                                                                                  ------------            ------------
Total assets                                                                      $ 67,781,413            $ 26,519,029
                                                                                  ============            ============
                                                                                                       
LIABILITIES AND STOCKHOLDERS' EQUITY                                                                   
Current liabilities:                                                                                   
      Accounts payable                                                            $  3,436,539            $  1,106,134
      Accrued payroll - related party                                                        -                 308,125
      Accrued expenses                                                                 579,351               1,345,262
      Deferred revenue                                                               1,250,000                 375,000
      Current portion of obligations under capital leases                            1,713,522               1,386,896
                                                                                  ------------            ------------ 
           Total current liabilities                                                 6,979,412               4,521,417
                                                                                  ------------            ------------ 
Long-term liabilities:                                                                                 
      Deferred rent                                                                    267,228                 227,972
      Interest payable                                                                  21,000                  21,000
      Obligations under capital leases, net of current portion                       6,034,111               4,126,153
                                                                                  ------------            ------------
           Total long-term liabilities                                               6,322,339               4,375,125
                                                                                  ------------            ------------ 
                                                                                                       
Commitments and contingencies                                                                          
                                                                                                       
Redeemable Common Stock                                                                      -               3,940,312
                                                                                  ------------            ------------
Stockholders' equity:                                                                                  
      Preferred Stock                                                                        -               1,459,196
      Common Stock                                                                     131,601                  85,801
      Additional paid-in capital                                                    71,498,276              23,861,665
      Accumulated deficit                                                          (16,177,553)            (10,511,023)
      Unamortized stock based compensation                                            (972,662)             (1,213,464)
                                                                                  ------------            ------------
           Total stockholders' equity                                               54,479,662              13,682,175
                                                                                  ------------            ------------
Total liabilities and stockholders' equity                                        $ 67,781,413            $ 26,519,029
                                                                                  ============            ============
</TABLE>  


           See accompanying notes to condensed financial statements

                                       3
                                        
<PAGE>
 
                              CURAGEN CORPORATION
                      CONDENSED STATEMENTS OF OPERATIONS
                                  (unaudited)

<TABLE>
<CAPTION>  
                                                              THREE MONTHS ENDED                 SIX MONTHS ENDED
                                                                   JUNE 30,                          JUNE 30,
                                                            1998             1997             1998             1997
                                                       ------------     ------------     ------------     ------------
<S>                                                    <C>              <C>              <C>              <C> 
Revenue:           
    Grant revenue                                      $  1,090,626     $  1,158,761     $  2,080,198     $  1,891,049
    Collaboration revenue                                 1,625,000          488,333        2,625,000          988,583
                                                       ------------     ------------     ------------     ------------
         Total revenue                                    2,715,626        1,647,094        4,705,198        2,879,632
                                                       ------------     ------------     ------------     ------------
Operating expenses:
    Grant research                                          435,546        1,411,686        1,107,699        2,467,561
    Collaborative research and development                3,653,524          954,422        6,796,077        1,279,777
    General and administrative                            1,696,627          683,956        3,075,617          980,491
                                                       ------------     ------------     ------------     ------------
         Total operating expenses                         5,785,697        3,050,064       10,979,393        4,727,829
                                                       ------------     ------------     ------------     ------------

Loss from operations                                     (3,070,071)      (1,402,970)      (6,274,195)      (1,848,197)
Interest income (expense), net                              571,054          (57,116)         607,665         (148,373)
                                                       ------------     ------------     ------------     ------------
                  
Net loss                                                 (2,499,017)      (1,460,086)      (5,666,530)      (1,996,570)
Preferred dividends                                               -          (17,106)        (508,435)         (34,212)
                                                       ------------     ------------     ------------     ------------
                  
Net loss attributable to common stockholders            ($2,499,017)     ($1,477,192)     ($6,174,965)     ($2,030,782)
                                                       ============     ============     ============     ============
 
Basic and diluted net loss per share attributable
   to common stockholders                                    ($0.19)          ($0.18)          ($0.55)          ($0.29)
                                                       ============     ============     ============     ============
 
Weighted average number of shares used in
   computing basic and diluted net loss per share
   attributable to common stockholders                   13,059,502        8,239,913       11,134,192        6,888,476
                                                       ============     ============     ============     ============
</TABLE>
 
           See accompanying notes to condensed financial statements

                                       4
<PAGE>
 
                              CURAGEN CORPORATION
                      CONDENSED STATEMENTS OF CASH FLOWS
                                  (unaudited)
 
<TABLE> 
<CAPTION> 
                                                                               SIX MONTHS ENDED
                                                                                   JUNE 30,
                                                                       ----------------------------------
                                                                           1998                   1997 
                                                                       ------------           -----------
<S>                                                                    <C>                  <C> 
    Cash flows from operating activities:                          
    Net loss                                                            ($5,666,530)        ($1,996,570)
    Adjustments to reconcile net loss to net cash                                     
      used in operating activities:                                                   
           Depreciation and amortization                                  1,192,377             537,704
           Non-monetary compensation                                        290,802             223,508
    Changes in assets and liabilities:                                                
           Grants receivable                                               (304,099)           (752,554)
           Accounts receivable                                              166,750             100,000
           Prepaid expenses                                                (359,551)            (55,052)
           Other current assets                                              12,583              11,031
           Other assets                                                    (181,917)           (122,440)
           Accounts payable                                               2,330,405             528,986
           Accrued payroll - related party                                 (308,125)              -
           Accrued expenses                                                (765,913)           (326,204)
           Deferred revenue                                                 875,000             565,000
           Deferred rent                                                     39,256             119,767
           Interest payable                                                   -                 259,316
                                                                       ------------        -------------
    Net cash used in operating activities                                (2,678,962)           (907,508)
                                                                       ------------        -------------
    CASH FLOWS FROM INVESTING ACTIVITIES:                                             
           Acquisitions of property and equipment                        (6,196,610)         (1,165,526)
           Loans to related parties                                        (110,000)            (50,000)
                                                                       ------------        ------------  
                                                                   
    Net cash used in investing activities                                (6,306,610)         (1,215,526)
                                                                       ------------        ------------
    CASH FLOWS FROM  FINANCING ACTIVITIES:                         
           Payments on capital lease obligations                           (807,979)           (291,403)
           Proceeds from issuance of Preferred Stock                          -              20,387,203
           Redemption of Series B Preferred Stock                        (1,967,631)             -
           Proceeds from issuance of Common Stock                        48,662,480              -
           Proceeds from exercise of employee stock options                 105,780              -
           Proceeds from sale-leaseback of equipment                      2,982,927              -
           Payments of stock issuance costs                              (3,426,361)             -
                                                                       ------------        ------------
    Net cash provided by financing activities                            45,549,216          20,095,800
                                                                       ------------        ------------
    Net increase in cash and cash equivalents                            36,563,644          17,972,766
    Cash and cash equivalents, beginning of period                       17,417,161           3,298,642
                                                                       ------------        ------------
    Cash and cash equivalents, end of period                           $ 53,980,805        $ 21,271,408
                                                                       ============        ============
    SUPPLEMENTAL CASH FLOW INFORMATION:                            
    Interest paid                                                      $    663,505        $    125,600
                                                                       ============        ============ 
    SUPPLEMENTAL SCHEDULE OF NON-CASH FINANCING TRANSACTIONS:      
    Reduction of note and related interest payable upon exercise   
     of common stock warrants                                                 -            $  1,485,644
                                                                       ============        ============ 
    Reduction of accrued expenses upon issuance of Common Stock               -            $    162,958
                                                                       ============        ============
    Obligations under capital leases                                   $  3,034,460        $  1,287,833
                                                                       ============        ============
    Adjustment of Redeemable Common Stock                                      -           $  2,454,668
                                                                       ============        ============
</TABLE> 

           See accompanying notes to condensed financial statements

                                       5
<PAGE>
 
                               CURAGEN CORPORATION

                     NOTES TO CONDENSED FINANCIAL STATEMENTS
                                   (unaudited)


1.  Basis of Presentation

     The accompanying unaudited condensed financial statements have been
     prepared in accordance with generally accepted accounting principles for
     interim financial information and with the instructions to Form 10-Q and
     Article 10 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 the
     Company's management, the accompanying unaudited condensed financial
     statements include all adjustments, consisting of only normal recurring
     accruals, necessary to present fairly the financial position, results of
     operations and cash flows of the Company. Interim results are not
     necessarily indicative of the results that may be expected for the entire
     year.

     The accompanying condensed financial statements should be read in
     conjunction with the audited financial statements for the year ended
     December 31, 1997 contained in the Company's Registration Statement on 
     Form S-1 (File No. 333-38051) filed with the Securities and Exchange
     Commission and declared effective on March 17, 1998.

2.  Initial Public Offering and Concurrent Private Placements

     On March 23, 1998, the Company completed its initial public offering of
     3,000,000 shares of Common Stock at $11.50 per share. In addition, Biogen,
     Inc. and Genentech, Inc., two of the Company's collaborative partners and
     existing stockholders, and the University of Florida Research Foundation,
     Inc. purchased an aggregate of $11,000,000 of the Company's Common Stock in
     private placements concurrent with the initial public offering, at a price
     of $11.50 per share. On April 21, 1998, the Company sold an additional
     275,000 shares of Common Stock to the underwriters, at $11.50 per share, in
     connection with the underwriters' exercise of their over-allotment option.
     Additional net proceeds of approximately $2,900,000 were raised through the
     exercise of the over-allotment option.

3.  Pioneer Hi-Bred Collaboration Agreement Expansion

     The Company announced the expansion of its ongoing gene discovery
     collaboration with Pioneer Hi-Bred International, Inc. ("Pioneer") in a
     press release dated April 15, 1998. The expansion doubled Pioneer's annual
     funding to the Company from $2.5 million per year to a minimum of $5
     million. Under the expansion, Pioneer and the Company will continue to
     apply the Company's integrated GeneCalling(TM) process, including
     proprietary technologies and information systems, to discover genes
     responsible for agricultural seed product performance.

4.  Leases

    Capital Leases

     In June 1998, the Company signed a $5.0 million lease-financing commitment
     to purchase various laboratory, office and computer equipment and to make
     tenant improvements. The lease commitment provides for payment terms of 60
     months per individual lease schedule with interest rates of approximately
     9.75%. At the end of the respective lease terms, the Company has the right
     to either return the equipment to the lessor or purchase the equipment at
     11% of the fair market value of the equipment. As of June 30, 1998, net
     proceeds of approximately $3.0 million had been received under this lease
     financing commitment. The remaining lease line of approximately $2.0
     million is anticipated to be utilized before year-end.

                                       6
<PAGE>
 
                               CURAGEN CORPORATION

                NOTES TO CONDENSED FINANCIAL STATEMENTS, cont'd.
                                   (unaudited)


    Operating Leases

     In May 1998, the Company entered into a new lease relating to its
     technology development laboratory in Branford, Connecticut. Under the new
     lease, the Company increased its leased space from 8,000 to 32,000 square
     feet and extended the term of the lease from May 1998 to May 2000. The
     Company may renew the lease for three additional terms of two years each.

     The future minimum rental payments for the operating lease are as follows
     as of June 30, 1998:

                        Year     
                        ----
                        1998                      $84,375
                        1999                      337,500
                        2000                      140,625
                                        ------------------
                        Total                    $562,500
                                        ==================
    

5.  Recently Enacted Pronouncements

     The AICPA has issued Statement of Position ("SOP") 98-1, "Accounting for
     Costs of Computer Software Developed or Planned for Internal Use". This SOP
     provides guidance on accounting for the costs of computer software
     developed or obtained for internal use. This SOP requires that the
     following costs be capitalized: 1) external direct costs of materials and
     services incurred in developing or obtaining internal-use computer
     software; 2) payroll and payroll-related costs for employees who are
     directly associated with and devote time to the internal-use software
     project (to the extent of time spent directly on the project); and 3)
     interest costs. Computer software costs that are research and development
     should be expensed as incurred. In addition, training costs should be
     expensed as incurred. This statement is effective for financial statements
     for fiscal years beginning after December 15, 1998, however, earlier
     application is encouraged. The Company will adopt this pronouncement in
     1999 and has not yet determined the effect of SOP 98-1 on its financial
     statements.

                                       7
<PAGE>
 
                               CURAGEN CORPORATION
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This Management's Discussion and Analysis of Financial Condition and Results of
Operations as of June 30, 1998 and for the three and six month periods ended
June 30, 1998 and 1997 should be read in conjunction with the sections of the
Company's Registration Statement on Form S-1 filed with the Securities and
Exchange Commission and declared effective on March 17, 1998, entitled
"Management's Discussion and Analysis of Financial Condition and Results of
Operations".

Overview

CuraGen Corporation (the "Company" or "CuraGen") is a biotechnology company
focusing on the application of genomics to the systematic discovery of genes,
biological pathways and drug candidates in order to accelerate the discovery and
development of the next generation of therapeutic, agricultural and diagnostic
products. The Company was incorporated in November 1991 and, until March 1993,
was engaged primarily in organizational activities, research and development of
the Company's technology, grant preparation and obtaining financing. The Company
has incurred losses since inception, principally as a result of research and
development and general and administrative expenses in support of its
operations. As of June 30, 1998, the Company had an accumulated deficit of
$16,177,553. The Company anticipates incurring additional losses over at least
the next several years as it expands its internal and collaborative gene
discovery efforts, continues development of its technology and expands its
operations. The Company expects that losses will fluctuate from quarter to
quarter and that such fluctuations may be substantial.

In March 1998, the Company completed an initial public offering of 3,000,000
shares of its Common Stock and received net proceeds of $30.2 million.
Concurrently with completion of the initial public offering, the Company
privately placed an aggregate of 956,520 shares of Common Stock and received net
proceeds of $5.0 million each from Biogen, Inc. ("Biogen") and Genentech, Inc.
("Genentech"), two of the Company's collaborative partners and existing
stockholders, and $1.0 million from the University of Florida Research
Foundation, Inc. Accordingly, the combined net proceeds raised by the Company
from the offering and the concurrent private placements were $41.2 million. In
addition, in April 1998, the Company's underwriters exercised their option to
purchase an additional 275,000 shares of Common Stock at a price of $11.50 per
share to cover over-allotments, providing CuraGen with additional net proceeds
of $2.9 million.


Results of Operations

Three and Six Months Ended June 30, 1998 and 1997

Revenue. Revenue for the three and six months ended June 30, 1998 was $2,715,626
and $4,705,198, respectively, an increase of $1,068,532 and $1,825,566, or 65%
and 63%, respectively, as compared to $1,647,094 and $2,879,632 for the
corresponding periods in 1997. The increases during both periods were largely
due to additional collaboration revenue recorded in 1998, primarily under the
Company's arrangements with Pioneer Hi-Bred International, Inc. ("Pioneer") and
Biogen. Beginning in April 1998, Pioneer doubled its annual collaboration
funding to the Company to a minimum of $5.0 million.

Operating Expenses. Grant research expenses for the three and six months ended
June 30, 1998 of $435,546 and $1,107,699 represented a decrease of $976,140 and
$1,359,862, or 69% and 55%, respectively, compared to $1,411,686 and $2,467,561
for the three and six months ended June 30, 1997. The decreases in grant
research expenses were primarily attributable to the completion of two federal
grants during the first quarter of 1998, thereby decreasing the costs incurred
by the Company in support of these grants. As a result of the completion of the
two federal grants, the Company foresees a continued decline in grant research
expenses during the remainder of 1998, unless additional grant awards are
received.

                                       8
<PAGE>
 
Collaborative research and development expenses for the three and six months
ended June 30, 1998 were $3,653,524 and $6,796,077, respectively, compared to
$954,422 and $1,279,777 for the three and six months ended June 30, 1997. The
increases of $2,699,102 and $5,516,300 for the three and six months ended June
30, 1998, respectively, were primarily attributable to increased expenses as the
Company hired additional research and development personnel, increased purchases
of laboratory supplies, increased equipment depreciation and increased
facilities expenses in connection with the expansion of the Company's internal
and collaborative research efforts. Future collaborative research and
development expenses are expected to increase as additional personnel are hired
and research and development facilities are expanded to accommodate the
Company's collaborations and internal research.

General and administrative expenses for the three months ended June 30, 1998
increased 148% to $1,696,627 as compared to $683,956 for the three months ended
June 30, 1997. For the six months ended June 30, 1998 and 1997, general and
administrative expenses were $3,075,617 and $980,491, respectively, an increase
of $2,095,126 or 214%. These increases were primarily attributable to the
expansion of administration facilities, the incurrence of related depreciation
expense, payment of legal fees, amortization of stock-based compensation and
hiring of additional personnel to support the future growth of the Company. Over
the next several years, the Company anticipates that percentage increases in
general and administrative expenses will become more proportionate to percentage
increases in revenue and collaborative research and development expenses.

Interest Income (Expense), Net. Net interest income for the three months ended
June 30, 1998 of $571,054 increased $628,170 compared to net interest expense of
$57,116 for the first three months of 1997. For the six months ended June 30,
1998, net interest income of $607,665 increased $756,038 as compared to net
interest expense of $148,373 for the corresponding period in 1997. These
increases were primarily a result of gross interest received on larger cash and
cash equivalent balances held by the Company as a result of the Company's
receipt of proceeds from its initial public offering and other private
placements of securities. Gross interest expense for the six months ended June
30, 1998 of $462,283 represented an increase of $76,084, or 20%, compared to
$386,199 for the first six months of 1997. This increase in gross interest
expense was primarily attributable to additional capital lease obligations for
equipment entered into during the last twelve months, which enabled the Company
to support its research and development activities.

Net Loss Attributable to Common Stockholders. For the three months ended June
30, 1998, the Company reported a net loss attributable to common stockholders of
$2,499,017 or ($0.19) per share as compared to $1,477,192 or ($0.18) per share
in the first three months of 1997. Since inception, the Company has incurred
operating losses, and as of June 30, 1998 had an accumulated deficit of
$16,177,553 and therefore, has not paid any federal income taxes. Realization of
deferred tax assets is dependent on future earnings, if any, the timing and
amount of which are uncertain. Accordingly, valuation allowances in amounts
equal to the deferred income tax assets have been established to reflect these
uncertainties in all periods presented.


Liquidity and Capital Resources

As of June 30, 1998, the Company had approximately $54.0 million in cash and
cash equivalents, compared to $17.4 million as of December 31, 1997. This
increase primarily reflects the Company's initial public offering with net
proceeds of $41.2 million, which included its concurrent private placements with
Biogen, Genentech and the University of Florida Research Foundation, Inc. The
Company has financed its operations since inception primarily through private
placements of equity securities, government grants, collaborative research and
development agreements and capital leases. As of June 30, 1998, the Company had
recognized $16,885,302 of cumulative sponsored research revenues from government
grants and collaborative research agreements. To date, inflation has not had a
material effect on the Company's business.

                                       9
<PAGE>
 
The Company's investing activities have consisted primarily of acquisitions of
equipment and expenditures for leasehold improvements. At June 30, 1998, the
Company's gross investment in equipment, computers and leasehold improvements
since inception was $14,746,309. At June 30, 1998 equipment with a gross book
value of $9,464,312 secures the Company's equipment financing facility. However,
the Company anticipates that the remaining net proceeds of approximately $2.0
million from its available lease line will be utilized for capital expenditures
over the next six months primarily for purchases of additional equipment and
tenant improvements in support of the laboratory expansions at the Branford, CT
and greater-Gainesville, FL locations. The Company had no material commitments
for capital expenditures at June 30, 1998.

Net cash used in operating activities was $2,678,962 for the six months ended
June 30, 1998, compared to $907,508 for the same period ended June 30, 1997. The
increase of $1,771,454 can be attributed to an increase in the Company's net
loss, primarily offset by increases in grants receivable, prepaid expenses,
accounts payable, deferred revenue, depreciation and amortization, amortization
of stock-based compensation and deferred rent.

As of June 30, 1998, the Company had net operating loss carryforwards of
approximately $14,300,000 to offset federal and state income taxes. If not
utilized, the federal and state net operating loss carryforwards will begin to
expire in 2008 and 1998, respectively. The Company also had research and
development tax credit carryforwards at June 30, 1998, estimated to be
approximately $927,000 and $3,350,000 for federal and state income tax purposes,
respectively.

Year 2000 Issue

The Company does not anticipate incurring any material costs related to Year
2000 issues, as its computer applications use four digits to identify a year in
the field date. Additionally, the Company does not believe that it will incur
material costs in order to resolve the Year 2000 problems of entities with which
it electronically interacts.

Recently Enacted Pronouncements

The AICPA has issued Statement of Position ("SOP") 98-1, "Accounting for Costs
of Computer Software Developed or Planned for Internal Use". This SOP provides
guidance on accounting for the costs of computer software developed or obtained
for internal use. This SOP requires that the following costs be capitalized: 1)
external direct costs of materials and services incurred in developing or
obtaining internal-use computer software; 2) payroll and payroll-related costs
for employees who are directly associated with and devote time to the
internal-use software project (to the extent of time spent directly on the
project); and 3) interest costs. Computer software costs that are research and
development should be expensed as incurred. In addition, training costs should
be expensed as incurred. This statement is effective for financial statements
for fiscal years beginning after December 15, 1998, however, earlier application
is encouraged. The Company will adopt this pronouncement in 1999 and has not yet
determined the effect of SOP 98-1 on its financial statements.

Certain Factors That May Affect Results of Operations

This report may contain forward-looking statements that are subject to certain
risks and uncertainties. These statements include statements regarding the
expected future levels of operating expenses. Such statements are based on
management's current expectations and are subject to a number of factors and
uncertainties that could cause actual results to differ materially from those
described in the forward-looking statements. The Company cautions investors that
there can be no assurance that actual results or business conditions will not
differ materially from those projected or suggested in such forward-looking
statements as a result of various factors, including, but not limited to, the
following: the Company's early stage of development, technological uncertainty
and product development risks, uncertainty of additional funding, reliance on
research collaborations, competition, the Company's ability to protect its
patents and proprietary rights and uncertainties relating to commercialization
rights. For further information, refer to the more specific risk and
uncertainties discussed throughout this report.

                                       10
<PAGE>
 
Part II  - Other Information

Item 2.   Changes in Securities and Use of Proceeds

In connection with the Company's initial public offering, the Company sold
3,275,000 shares of Common Stock and received net offering proceeds of
$33,160,350. On March 17, 1998, the Securities and Exchange Commission declared
the Company's Registration Statement on Form S-1 (File No. 333-38051) effective.

The following table sets forth the Company's cumulative use of net offering
proceeds as of June 30, 1998:


       Construction of plant, building and facilities                    $0
       Purchase and installation of machinery and equipment       1,098,330
       Purchase of Real Estate                                            0
       Acquisition of other businesses                                    0
       Repayment of indebtedness                                  1,967,631
       Working Capital                                            1,361,261
       Temporary Investments:
         Cash and cash equivalents                               28,733,128
       All other purposes                                                 0


The foregoing use of net offering proceeds does not represent a material change
in the use of proceeds described in the Registration Statement.

Item 5.   Other Information

To be considered for inclusion in the proxy statement relating to the Annual
Meeting of stockholders to be held in 1999, stockholder proposals must be
received no later than August 31, 1998. To be considered for presentation at the
Annual Meeting, although not included in the proxy statement, proposals must be
received no later than November 9, 1998 and no earlier than October 10, 1998.
All stockholder proposals should be marked for the attention of Secretary,
CuraGen Corporation, 555 Long Wharf Drive, 11th Floor, New Haven, CT 06511.

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

         A.  Exhibits

          Exhibit 10.1 - Lease, dated May 29, 1998, by and between T.K.J. 
                         Associates, LLC and CuraGen Corporation

          Exhibit 11   - Computation of Net Loss Per Share Attributable to 
                         Common Stockholders

          Exhibit 99.1 - Form of Non-Qualified Stock Option Agreement with 
                         respect to options to purchase an aggregate of 570,000
                         shares of Common Stock. (Previously filed as Exhibit 
                         99.3 to the Company's Registration Statement on Form
                         S-8, File No. 333-56829, and incorporated herein by 
                         reference)

          Exhibit 27   - Financial Data Schedule

         B.  Reports on Form 8-K

          No reports on Form 8-K were filed during the three months ended 
          June 30, 1998.

                                       12
<PAGE>
 
                                   SIGNATURES

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







Dated: August 10, 1998                  CuraGen Corporation


                                        By: /s/ Jonathan M. Rothberg, Ph.D.
                                           --------------------------------
                                        Jonathan M. Rothberg, Ph.D.
                                        Chief Executive Officer, President and
                                        Chairman of the Board



                                        By: /s/ David M. Wurzer
                                           --------------------
                                        David M. Wurzer
                                        Executive Vice-President, Treasurer
                                        and Chief Financial Officer

                                       13
<PAGE>
 
                               CURAGEN CORPORATION

                                  EXHIBIT INDEX


<TABLE> 
<CAPTION> 
                                                                                                Page
                                                                                                ----
<S>         <C>                                                                               <C> 
No. 10.1    Lease, dated May 29, 1998, by and between T.K.J. Associates, LLC and
            CuraGen Corporation                                                               15 - 36

No. 11      Computation of Net Loss Per Share Attributable to Common Stockholders                  37

No. 99.1    Form of Non-Qualified Stock Option Agreement with respect to options to              -
            purchase an aggregate of 570,000 shares of Common Stock. (Previously filed as
            Exhibit 99.3 to the Company's Registration Statement on Form S-8, File No.
            333-56829, and incorporated herein by reference)
</TABLE> 

                                      14

<PAGE>
 
                                                                    Exhibit 10.1

                                   L E A S E
                                   ---------

          THIS INDENTURE OF LEASE ("Lease") made and entered into this 29th day
of May, 1998,  by and between T.K.J. ASSOCIATES, L.L.C., a Connecticut limited
                              -------------------------                       
liability company having an address at 101 Mapleview Road, Wallingford,
Connecticut 06492,  hereinafter referred to as Landlord; and CURAGEN
                                                             -------
CORPORATION, a Delaware corporation having an office at 322 East Main Street,
Branford, Connecticut 06405, hereinafter referred to as Tenant.

                             W I T N E S S E T H:
                             ------------------- 

          WHEREAS, Landlord, as successor in interest to Branford Office Venture
and Tenant are parties to that certain lease dated February 11, 1993 (the
"Original Lease"), pursuant to which Original Lease Tenant is leasing the
northern one-half of the space (the "Original Space") on the second floor of
Landlord's building located at 322 East Main Street, Branford, Connecticut (the
"Building"), as shown on Exhibit A attached to this Lease; and
                         ---------                            

          WHEREAS, the current term of the Original Lease including all options
to renew expires on May 31, 1999, and Landlord has agreed to lease the Original
Space to Tenant for an additional one-year period, from June 1, 1999 to and
including May 31, 2000; and

          WHEREAS, Landlord and Tenant desire that the terms and provisions of
this Lease shall hereafter apply to and govern the lease of the Original Space
and replace and supersede the Original Lease, as of the date hereof; and

          WHEREAS, in addition to the Original Space, Tenant has requested that
Landlord lease additional space to Tenant (the "New Space"), and Landlord has
agreed to lease such space to Tenant, in accordance with and upon the terms and
conditions contained herein; and

          WHEREAS, Tenant and Landlord intend that the terms and provisions
contained herein shall hereafter govern and apply to the leasing of the Original
Space and the New Space.

          NOW, THEREFORE, the parties hereto, and for their successors and
assigns, hereby covenant and agree as follows: 

                                      15
<PAGE>
 
          1.  Original Lease.  Landlord and Tenant hereby agree that the terms
              --------------                                                  
and provisions of this Lease replace and supersede the terms and provisions of
the Original Lease, that the lease of Original Space is and shall continue to be
governed by this Lease from this day forward and the Original Lease is hereby
canceled in its entirety.  Notwithstanding the foregoing, each party shall
continue to remain liable for all payments past due and the performance of any
obligations remaining unperformed under the Original Lease as of the date of
this Lease.
 
          2.  Leased Premises.   In consideration of the rent and covenants
              ---------------                                              
herein reserved and contained on the part of the Tenant to be paid, performed
and observed, the Landlord does hereby lease, demise, and let  unto the Tenant
and the Tenant does hereby hire from the Landlord upon the terms, provisions,
covenants and conditions hereinafter set forth:  (a) approximately 8,000 square
feet of space on the second (2nd) floor of the Building, as more particularly
depicted on Exhibit A attached hereto (the "Second Floor Space"); and (b)
            ---------                                                    
approximately 16,000 square feet of space on the first (1st) floor of the
Building, as more particularly depicted on Exhibit B attached hereto (the "First
                                           ---------                            
Floor Space"); and (c) the Original Space.

          It is the intention of the parties that the Tenant shall lease the
entire first and second floors of the Building, which constitute the New Space
and the Original Space together.

          3.  Length of Term.  The term of this Lease shall commence on the date
              --------------                                                    
hereof and continue until May 31, 2000, both inclusive, unless sooner terminated
or renewed as hereinafter provided.

          4.  Option to Renew.  Tenant shall have the option, by giving written
              ---------------                                                  
notice to Landlord at least six (6)  months prior to the expiration of the
original term and any renewal term of this Lease, to renew this Lease for three
(3) additional terms of two (2) years each.  The Lease may be renewed for any or
all of the four (4) one-half floor sections, but not less than such one-half
floor sections, of the First Floor Space and/or Second Floor Space provided,
                                                                   -------- 
however, that if the Tenant chooses to renew this Lease for only two (2) of such
- -------                                                                         
one-half floor sections, such renewal shall only be for the entire First Floor
Space or the entire Second Floor Space.  Notwithstanding any provision to the
contrary contained in this Lease, Tenant shall not have the right to renew any
term of this Lease if Tenant shall be in default under any provision of this
Lease as of the date on which Tenant delivers the notice of its intention to
renew or the expiration date of any term of this Lease.  If Tenant does not
exercise an option with respect to any portion of the leased premises all future
options for that portion of space shall expire.

                                      16
<PAGE>
 
          5.  Rent. Initial Term.
              ------------------ 

          A.  First Floor Space and Second Floor Space.   The total rent payable
              ----------------------------------------                          
during the first year of the original term hereof, for the First Floor Space and
Second Floor Space, excluding the  Original Space, shall be Two Hundred Twenty
Five Thousand ($225,000.00) Dollars, payable in eight (8) equal monthly
installments in the amount of Twenty Eight Thousand One Hundred Twenty Five
($28,125.00) Dollars per month, said rent to be paid in advance without demand
on the first day of the month commencing October 1, 1998 and continuing to and
including May 1, 1999.  The annual rent payable during the second year of the
original term hereof, for the First Floor Space and Second Floor Space, shall be
Three Hundred Thirty Seven Thousand Five Hundred ($337,500.00) Dollars payable
in equal monthly installments of Twenty Eight Thousand One Hundred Twenty Five
($28,125.00) Dollars per month, said rent to be paid in advance without demand
on the first (1st) day of the month commencing June 1, 1999 and continuing to
and including May 1, 2000.

          It is hereby agreed that Tenant shall have occupancy of the New Space
commencing on the date hereof notwithstanding the fact that Tenant's rental
payments for the lease of the New Space shall not commence until October 1,
1998, it being intended that Tenant shall build-out, at its own cost and
expense,  the New Space during such period.  Tenant agrees to provide Landlord
with evidence of all insurances required herein prior to such occupancy, and
agrees that all other terms and provisions of this Lease shall apply to and
govern Tenant's occupancy of the New Space from and after the date hereof.
Tenant shall be obligated to pay for all utilities for the Original Space and
the New Space commencing on the date of this Lease at the times and in the
manner provided herein.

          B.  Original Space.  The total rent payable during the first fourteen
              --------------                                                   
months of the original term hereof, April 1, 1998 through May 31, 1999
inclusive, for the Original Space shall be One Hundred Seventeen Thousand Seven
Hundred Thirty Three and 56/100 Dollars ($117,733.56) payable in equal monthly
installments in the amount of Eight Thousand Four Hundred Nine and 54/100
($8,409.54) Dollars per month, said rent to be paid in advance without demand on
the first (1st) day of the month commencing April 1, 1998 and continuing to and
including May 1, 1999.  The annual rent payable during the second year of the
original term hereof for the Original Space shall be One Hundred Twelve Thousand
Five Hundred ($112,500.00) Dollars payable in equal monthly installments of Nine
Thousand Three Hundred Seventy Five  ($9,375.00) Dollars per month, said rent to
be paid in advance without demand on the first (1st) day of the month commencing
June 1, 1999 and continuing to and including May 1, 2000.

                                      17
<PAGE>
 
          6.  Rent Adjustments;  Renewal Terms.  (a)  In the event the Tenant
              --------------------------------                               
exercises its option to renew this Lease, the annual rent payable for the
Original Space and the New Space during the period June 1, 2000 through May 31,
2002, shall be computed by the Landlord and shall be equal to One Hundred Twelve
Thousand Five Hundred ($112,500.00) Dollars for each one-half floor section for
which Tenant exercises its option plus a percentage thereof, which shall be
equal to the percentage increase in the Consumer Price Index for All Urban
Consumer - All Items (CPI-U) as published by the Bureau of Labor Statistics of
the United States Department of Labor for the period June 1, 1998 through May
31, 2000.

          In the event the Tenant exercises its option to renew for the period
June 1, 2002 through May 31, 2004, and for the period June 1, 2004 through May
31, 2006, rent shall be computed for each such period by the Landlord and shall
be equal to the annual rent in effect for that portion of space for which Tenant
exercises its option for the previous two (2) lease years (each party agrees
that each twelve (12) month period from June 1 through May 31 of each year shall
be a "lease year" under the terms of this Lease) plus a percentage of the annual
rent in effect for such space for the previous two (2) lease years.  The
percentage increase shall be equal to the percentage increase  in the "Consumer
Price Index for All Urban Consumers - All Items (CPI-U)" as published by the
Bureau of Labor Statistics of the United States Department of Labor occurring
during the previous two (2) lease years.

          (b) Notwithstanding the foregoing provisions of this paragraph 6, the
percentage increase for any two (2) year period shall neither exceed four and
one-half (4.5%) percent nor be less than three (3.0%) percent.
 
          (c) The Landlord shall, within a reasonable time after obtaining the
appropriate data necessary for computing such increase, give the Tenant notice
of any increase so determined, and the Landlord's computation shall be
conclusive and binding but shall not preclude any adjustment which may be
required in the event of a published amendment of the index figures upon which
the computation was based or an error in computation.  Any adjustments in the
rental payments which may be delayed due to unavailability of the CPI-U figures
shall be due and payable retroactive to the first day of the lease year period
in question within ten (10) days after notice from the Landlord to the Tenant.

                                      18
<PAGE>
 
          (d) If publication of the CPI-U shall be discontinued, the parties
hereto shall thereafter accept comparable statistics on the cost of living as
they shall be computed and published by an agency of the United States or by a
responsible financial periodical of recognized authority then to be selected by
the parties hereto or, if the parties cannot agree upon a selection, by
arbitration in accordance with the rules of the American Arbitration Association
then in effect.  In the event of (1) the use of comparable statistics in place
of the Revised CPI-U as above-mentioned, or (2) publication of the Index figure
at other than monthly intervals, there shall be made in the method of
computation herein provided for, such revisions as the circumstances may require
to carry out the intent of this Article, and any dispute between the parties as
to the making of such adjustment shall be determined by arbitration as stated
above.

          (e) All rental payments are to be paid in equal monthly payments in
advance without demand on the first day of the month during the renewal term or
terms of this Lease.  All other terms and conditions of this Lease shall remain
as set forth herein during the renewal term or terms.

          7.  Quiet Enjoyment.  The Landlord covenants with the Tenant that it
              ---------------                                                 
has good right to lease said premises and that it will suffer and permit the
Tenant (it keeping all of the covenants on its part as herein contained) to
occupy, possess and quietly enjoy said premises during the term hereof, without
hindrance from Landlord or any person claiming by, from or under it, subject,
nevertheless, to the terms of this Lease and any mortgage, ground lease or
agreements to which this Lease is subordinated.

          8.  Tenant's Covenants.  The Tenant covenants with the Landlord to
              ------------------                                            
hire said leased premises and to pay rent and all other charges and payments to
be made herein, and to keep all of its covenants as contained herein, that it
will commit no waste, nor suffer the same to be committed thereon.  Tenant shall
promptly comply with all present and future laws, orders and regulations of all
state, federal, municipal and local governments, departments, commissions and
boards and any direction of any public officers pursuant to law.
Notwithstanding any provision to the contrary herein, Tenant shall not be liable
to Landlord for any violation of any environmental law or regulation that is
determined to have been caused directly or indirectly by any person or entity
other than Tenant and its employees, agents, contractors, licensees, successors
and assigns.

                                      19
<PAGE>
 
          9.  No Representations.  The Tenant accepts the building improvements
              ------------------                                               
and personalty on the leased premises in their present state and without any
representation or warranty by the Landlord or its agents as to the condition of
such property or as to the use which may be made thereof.  The Landlord shall
not be responsible for any latent defect or change of condition in such building
improvements and personalty and the rent hereunder shall in no case be withheld
or diminished on account of any defect in such property or in the change of the
condition thereof, any damage occurring thereto or the existence with respect
thereto of any violations of the laws or regulations of any governmental
authority.

          10. Alterations.  Tenant shall make no changes in or to the leased
              -----------                                                   
premises of any nature without Landlord's prior written consent, which consent
shall not unreasonably be withheld or delayed.  Notwithstanding the foregoing
sentence, Tenant may make alterations or improvements to the leased premises
which do not exceed the sum of $5,000.00 in cost (materials and labor), so long
as such alterations and improvements are interior and non-structural, and are
commensurate and compatible with the architecture, design, style and of the same
quality of material and construction, as the other portions of the leased
premises and the Building.  Tenant shall provide Landlord, upon its request,
final and complete drawings and specifications as may be necessary to obtain
required building permits for all work to be done in connection with any build-
out of the leased premises and any alterations made by the Tenant.  Landlord
shall approve or disapprove Tenant's plans within a reasonable time thereafter.
In the event Landlord disapproves Tenant's plans, Landlord shall set forth the
reasons therefor.  Any revised plans shall correct any deficiencies and conform
to any objections set forth by Landlord.  It is specifically agreed herein that,
in the event that any utility services, facilities, equipment, electrical lines
or duct-work need to be altered in any respect in the course of Tenant's build-
out of the leased premises, all costs and expenses of the same shall be paid by
Tenant.

          Upon receipt of Landlord's written consent, Tenant, at Tenant's
expense, may make alterations, installations, additions or improvements which
are non-structural and which do not affect utility services or plumbing and
electrical lines, in or to the interior of the leased premises by using
contractors and mechanics first approved by Landlord.  Tenant shall, before
making any alterations, additions, installations or improvements, at its
expense, obtain all permits, approvals and certificates required by any
governmental or quasi-governmental bodies and (upon completion) certificates of
final approval thereof and shall deliver promptly duplicates of all such
permits, approvals and certificates to Landlord.  Tenant agrees to carry and
will cause Tenant's contractors and sub-contractors to carry such workman's
compensation, general liability, personal and property damage insurance as
Landlord may require.  If any mechanic's lien is filed against the leased
premises or the

                                      20
<PAGE>
 
Building for work claimed to have been done for, or materials furnished to,
Tenant, the same shall be discharged by Tenant within thirty (30) days
thereafter, at Tenant's expense, or by the filing of a bond required by law.
Unless otherwise agreed by Landlord in writing prior to installation, all
fixtures, paneling, partitions and like installations, installed in the leased
premises at any time, either by Tenant or by Landlord in Tenant's  behalf,
shall, upon installation become the property of Landlord and shall remain upon
and be surrendered with the leased premises unless Landlord, by notice to Tenant
no later than sixty (60) days prior to the date fixed as the termination of this
Lease, elects to relinquish Landlord's right thereto and to have them removed by
Tenant, in which event the same shall be removed from the premises by Tenant
prior to the expiration of the Lease, at Tenant's expense.  All property
permitted or required to be removed by Tenant at the end of the term remaining
in the leased premises after Tenant's removal, shall be deemed abandoned and
may, at the election of Landlord, either be retained as Landlord's property or
may be removed from the premises by Landlord at Tenant's expense.

          11. Damage, Injury. Insurance.  (a)  Tenant shall indemnify and save
              -------------------------                                       
harmless Landlord from and against any and all liability, damage, penalties or
judgments arising from injury to person or property sustained by anyone in and
about the leased premises resulting from any act or acts or omission or
omissions of Tenant, or Tenant's officers, agents, servants, employees,
contractors, or sublessees.  Tenant shall, at its own cost and expense, defend
any and all suits or actions (just or unjust) which may be brought against
Landlord or in which Landlord may be impleaded with others upon any such above-
mentioned matter, claim or claims.

          (b) The Landlord shall not be liable for any damage or injury to the
leased premises, or to any property of the Tenant of any other person thereon,
from water, rain, snow, ice, sewerage, steam, gas or electricity which may leak
into or issue or flow from any part of the Building of which the leased premises
are a part, or from the bursting, breaking, obstruction, leaking or any defect
of any of the pipes or plumbing, appliances or from electric wiring or other
fixtures in the Building, or from the condition of the premises or Building or
any part thereof, from the street or subsurface.

          (c) Tenant shall provide at its expense, and keep in force during the
term of this lease, general liability insurance in a good and solvent insurance
company or companies licensed to do business in the State of Connecticut,
selected by Tenant, and reasonably satisfactory to the Landlord, in the amount
of at least One Million ($1,000,000.00) Dollars combined single limit in respect
to any one occurrence with respect to injury or death to any one or more than
one person and One Million ($1,000,000.00) Dollars with respect to damages to
property.  Such policy or policies shall include Landlord and any mortgagee
named by Landlord as assureds.  Tenant agrees to deliver certificates of such
insurance to Landlord prior to the beginning of the term of this Lease and
thereafter not less than ten (10) days prior to the expiration of any such
policy.  Such insurance shall be noncancellable without ten (10) days' written
notice to Landlord, and to each such mortgagee.

                                      21
<PAGE>
 
          (d) If by reason of any act or omission or negligence on the part of
Tenant or any employee or agent of Tenant, whether or not Landlord has consented
to the same, the rate of fire or other property insurance of Landlord or of any
other Tenant in the Building shall be higher than it otherwise would be, Tenant
shall reimburse Landlord, and all such other Tenants, on demand, for that part
of the premiums for such insurance paid by Landlord or such other Tenants,
because of such act or omission or negligence on the part of Tenant or any
employee or agent of Tenant.  Tenant shall also pay any increase in premiums on
any rent insurance carried by Landlord for its protection against rent loss and
fire or other casualty if such increase shall result from any of the foregoing
events.

          (e) All insurance policies carried by Tenant covering the leased
premises, as required herein, shall expressly waive any right on the part of the
insurer or the insured against the Landlord, except as otherwise specifically
provided herein.

          12. Assignment and Subletting.  Tenant, for itself, its successors
              -------------------------                                     
and assigns, expressly covenants that it shall not assign, mortgage or encumber
this Lease, nor sublet, or suffer or permit the leased premises or any part
thereof to be used by others, without the prior written consent of Landlord in
each instance.  Any merger or consolidation of Tenant or the transfer of more
than fifty (50%) percent of the stock of Tenant shall be deemed an assignment.
Notwithstanding the foregoing sentence, any trading of Tenant's stock on a
nationally-recognized security exchange will not be deemed an assignment.  If
this Lease be assigned, or if the leased premises or any part thereof be sublet
or occupied by anyone other than Tenant, Landlord may, after default by Tenant,
collect from the assignee, subtenant or occupant, and apply the net amount
collected to the rent herein reserved, but no such assignment, subletting,
occupancy or collection shall be deemed a waiver of this covenant, or the
acceptance of the assignee, subtenant or occupant as Tenant, or a release of
Tenant from the further performance by Tenant of covenants on the part of Tenant
herein contained.  Notwithstanding the foregoing, Tenant shall be permitted to
sublet the leased premises provided that:

          (i)     Tenant submits to Landlord the name and address of the
                  proposed subtenant;

          (ii)    Tenant delivers to Landlord a term sheet containing the
                  material business terms of the proposed sublease and a copy of
                  any sublease which is executed;

          (iii)   The character of the proposed subtenant is reasonably
                  satisfactory to Landlord and shall not in Landlord's opinion,
                  adversely affect the Building or Landlord's financial interest
                  therein;

          (iv)    Tenant delivers to Landlord banking, financial and other
                  credit information relating to the proposed subtenant and such
                  information is reasonably satisfactory to Landlord; and

          (v)     The sublease expressly provides that it is subject and
                  subordinate to this Lease.

                                      22
<PAGE>
 
          The consent by Landlord to any assignment or subletting shall not
constitute a waiver of the necessity for such consent to any subsequent
assignment or subletting.  This prohibition against assigning or subletting
shall be construed to include a prohibition against any assignment or subletting
by operation of law.  Notwithstanding any provision to the contrary in this
paragraph 12, Landlord shall not unreasonably withhold or delay its consent to
any assignment of this Lease provided that the  conditions set forth in this
paragraph 12 have been satisfied.  Any rentals and other consideration paid or
payable to Tenant by any subtenant or assignee in excess of the rentals and
other payments due under this Lease from Tenant to Landlord shall be paid by
Tenant as and when received by Tenant to Landlord in addition to the rental and
other payments otherwise due hereunder.

          13.  Condemnation. It is expressly agreed that if the entire leased
               ------------                                                  
premises shall be taken by public or quasi-public authority under the power of
eminent domain or condemnation, this Lease shall terminate on the date of such
taking and the rights of the Tenant shall forthwith cease, with rent to be
apportioned as of the date of such taking.  No part of any award for such taking
shall belong to Tenant.  If any part of the leased premises shall be taken as
aforesaid, and such partial taking shall render that portion not so taken
unsuitable for the business of Tenant, then this Lease and the term herein shall
cease and terminate as aforesaid.  If such partial taking is not extensive
enough to render the leased premises unsuitable for the business of Tenant, then
this Lease shall continue in effect except that the rent shall be reduced in the
same proportion that the floor area of the leased premises taken bears to the
original floor area demised and Landlord shall, upon receipt of the award in
condemnation, make all necessary repair or alterations to the Building in which
the leased premises are located, but such work shall not exceed the scope of the
work done in the original construction of said Building, nor shall Landlord in
any event be required to spend for such work an amount in excess of the amount
received by the Landlord as damages for part of the leased premises so taken.
"Amount received by the Landlord" shall mean that part of the award in
condemnation which is free and clear to Landlord of any collection by mortgagees
for the value of the diminished fee.  Notwithstanding the foregoing, if more
than twenty (20%) percent of the floor area of the Building shall be taken as
aforesaid, Landlord may, by written notice to Tenant, terminate this Lease, such
termination to be effective as aforesaid.  If this Lease is terminated as
provided in this paragraph, the rent shall be paid up to the day that possession
is so taken by public authority and Landlord shall make an equitable refund of
any rent paid by Tenant in advance.  In no event shall Tenant be entitled to,
and Tenant expressly waives hereby, all claims to any condemnation award for any
taking, whether whole or partial, and whether for diminution in value of the
leasehold or to the fee although, Tenant shall have the right, to claim from the
condemnor, but not from Landlord, such compensation as may be recoverable by
Tenant in its own right for damage to Tenant's business, relocation costs and
fixtures.

                                      23
<PAGE>
 
          14.  Maintenance.   Tenant shall, throughout the term of this Lease,
               -----------                                                    
take good care of the leased premises and the fixtures and appurtenances
therein.  Tenant shall be responsible for all damage or injury to the leased
premises or any other part of the Building and the systems and equipment
thereof, whether requiring structural or non-structural repairs caused by or
resulting from carelessness, omission, neglect or improper conduct of Tenant,
Tenant's subtenants, agents, employees, invitees or licensees, or which arise
out of any work, labor, service or equipment done for or supplied to Tenant or
any subtenant or arising out of the installation, use or operation of the
property or equipment of Tenant or any subtenant.  Tenant shall also repair all
damage to the Building and the leased premises caused by the moving of Tenant's
fixtures, furniture and equipment.  Landlord shall maintain in good working
order and repair the exterior and the structural portions of the Building,
including the structural portions of the leased premises, and the public
portions of the Building interior and the Building plumbing and electrical
systems located outside of but serving the leased premises.  Landlord shall
maintain in good working order and repair the heating, air-conditioning and
ventilating systems within the Building and located within the leased premises.
Tenant shall maintain in good working order and repair those portions of utility
systems, including but  not limited to, plumbing, electrical and lighting
systems (including the purchase and replacement of light bulbs), located within
the leased premises.  Tenant agrees to give prompt notice of any defective
condition in the leased premises for which Landlord may be responsible
hereunder.  There shall be no allowance to Tenant for diminution of rental value
and no liability on the part of Landlord by reason of inconvenience, annoyance
or injury to business arising from Landlord or others making repairs,
alterations, additions or improvements in or to any portion of the Building or
the leased premises or in and to the fixtures, appurtenances or equipment
thereof, provided Landlord is prosecuting such repairs, alterations, additions
or improvements with reasonable diligence.  It is specifically agreed that
Tenant shall not be entitled to any set off or reduction of rent by reason of
any failure of Landlord to comply with the covenants of this or any other
article of this Lease.  Tenant agrees that Tenant's sole remedy at law in such
instance will be by way of an action for damages for breach of contract.  Upon
the expiration or other termination of the term of this Lease, Tenant shall quit
and surrender to Landlord the leased premises, broom-clean, and in good order
and condition, ordinary wear excepted, and Tenant shall remove all of its
property.

                                      24
<PAGE>
 
          15.  Destruction.  (a) If the leased premises or any part thereof
               -----------                                                 
shall be damaged by fire or other casualty, Tenant shall give immediate notice
thereof to Landlord and this Lease shall continue in full force and effect
except as hereinafter set forth.  (b) If the leased premises are partially
damaged or rendered partially unusable by fire or other casualty, the damages
thereto shall be repaired by and at the expense of Landlord and the rent, until
such repair shall be substantially completed, shall be apportioned from the day
following the casualty according to the part of the premises which is usable.
(c) If the leased premises are totally damaged or rendered wholly unusable by
fire or other casualty, then the rent shall be proportionately paid up to the
time of the casualty and thenceforth shall cease until the date when the
premises shall have been repaired and restored by Landlord, subject to
Landlord's right to elect not to restore the same as hereinafter provided.  (d)
If the leased premises are rendered wholly unusable or (whether or not the
leased premises are damaged in whole or in part) if the building shall be so
damaged that Landlord shall decide to demolish it or to rebuild it, then, in any
of such events, Landlord may elect to terminate this lease by written notice to
Tenant, given within ninety (90) days after such fire or casualty, specifying a
date for the expiration of the lease, which date shall not be more than sixty
(60) days after the giving of such notice, and upon the date specified in such
notice the term of  this Lease shall expire as fully and completely as if such
date were the date set forth above for the termination of this Lease and Tenant
shall forthwith quit, surrender and vacate the premises without prejudice
however, to Landlord's rights and remedies against Tenant under the Lease
provisions in effect prior to such termination, and any rent owing shall be paid
up to such date and any payments of rent made by Tenant which were on account of
any period subsequent to such date shall be returned to Tenant.  Unless Landlord
shall serve a termination notice as provided for herein, Landlord shall make the
repairs and restorations under the conditions of (b) and (c) hereof, with all
reasonable expedition, subject to delays due to adjustment of insurance claims,
labor troubles and causes beyond Landlord's control. After any such casualty,
Tenant shall cooperate with Landlord's restoration by removing from the premises
as promptly as reasonably possible, all of Tenant's salvageable inventory and
movable equipment, furniture, and other property.  Tenant's liability of rent
shall resume five (5) days after written notice from Landlord that the premises
are substantially ready for Tenant's occupancy. (e) Nothing contained
hereinabove shall relieve Tenant from liability that may exist as a result of
damage from fire or other casualty.  Notwithstanding the foregoing, each party
shall look

                                      25
<PAGE>
 
first to any insurance in its favor before making any claim against the other
party for recovery for loss or damage resulting from fire or other casualty, and
to the extent that such insurance is in force and collectible and to the extent
permitted by law, Landlord and Tenant each hereby releases and waives all right
of recovery against the other or any one claiming through or under each of them
by way of subrogation or otherwise.  The foregoing release and waiver shall be
in force only if both releasors' insurance policies contain a clause providing
that such a release or waiver shall not invalidate the insurance.  If, and to
the extent, that such waiver can be obtained only by the payment of additional
premiums, then the party benefiting from the waiver shall pay such premium
within ten (10) days after written demand or shall be deemed to have agreed that
the party obtaining insurance coverage shall be free of any further obligation
under the provisions hereof with respect to waiver of subrogation.  Tenant
acknowledges that Landlord will not carry insurance on Tenant's furniture and/or
furnishings or any fixtures or equipment, improvements, or appurtenances
removable by Tenant and agrees that Landlord will not be obligated to repair and
damage thereto or replace the same.

          16.  Subordination and Non-Disturbance.  This Lease is subject and
               ---------------------------------                            
subordinate to all ground or underlying leases and to all mortgages which may
now or hereafter affect such leases or the real property of which the leased
premises are a part, provided that the holder thereof agrees to recognize
Tenant's rights under this Lease and not to disturb Tenant's possession of the
leased premises as long as Tenant is not in default of its obligations under
this Lease.  This clause shall be self-operative and no further instrument shall
be required by any ground or underlying lessor or by any mortgagee affecting any
lease or the real property of which the leased premises are a part.  In
confirmation of such subordination, Tenant shall execute promptly any
certificate that Landlord may request in writing.

          17.  Attornment.  Tenant shall in the event of the sale or assignment
               ----------                                                      
of the Landlord's interest in the Building, or in the event of any proceedings
brought for the foreclosure of, or in the event of exercise of the power of sale
under any mortgage made by Landlord covering the Building, attorn to the
purchaser and recognize such purchaser as Landlord under this Lease, provided
the purchaser agrees to recognize Tenant's rights under this Lease and not to
disturb Tenant's possession of the leased premises as long as Tenant is not in
default of its obligations under this Lease.

          18.  Use of Premises.  Tenant shall use and occupy the leased premises
               ---------------                                                  
as a biopharmaceutical research laboratory and offices,  and for no other
purpose.  Tenant shall not bring any animal onto or within the leased premises
for research or other purposes.

                                      26
<PAGE>
 
          19.  Signs.  The Tenant further covenants and agrees with the Landlord
               -----                                                            
not to place, or permit to be placed, any signs, advertising display material,
antennas or mechanical devices or any other items on the exterior of the
building, sidewalk, common areas or property adjoining said leased premises in
which said leased premises are located, except as permitted in writing by the
Landlord, or as currently maintained thereon.

          20.  Default; Remedies.
               ----------------- 

               A.   If Tenant defaults in fulfilling any of the covenants of
this Lease, other than the covenants for the payment of rent, or in making any
other payment herein provided, or if the leased premises become vacant or
deserted, or if the leased premises are damaged by reason of negligence or
carelessness of Tenant, its agents, employees, or invitees, then, in any one or
more of such events, upon Landlord serving a written ten (10) business days'
notice upon Tenant specifying the nature of said default, and upon the
expiration of said ten (10) business days, if Tenant shall have failed to comply
with or remedy such default, or if the said default or omission complained of
shall be of such a nature that the same cannot be completely cured or remedied
within said ten (10) business day period, and if Tenant shall not have
diligently commenced curing such default within such ten (10) business day
period, and shall not thereafter with reasonable diligence and in good faith
proceed to remedy or cure such default, Landlord may serve a written three (3)
day notice of cancellation of this Lease upon Tenant, and upon the expiration of
said three (3) days, this Lease and the term hereunder shall end and expire as
fully and completely as if the date of expiration of such three (3) day period
were the date herein definitely fixed for the end and expiration of this Lease
and the term thereof, and Tenant shall then quit and surrender the leased
premises to Landlord, but Tenant shall remain liable as hereinafter provided.

               B.   If the notice provided for in paragraph A hereof shall have
been given, and the term shall expire as aforesaid; or (1) if Tenant shall fail
to make any payment of the rent reserved herein or in making any other payment
herein provided within fifteen (15) days of the date due on three (3) or more
occasions during any lease year; or (2) if any execution or attachment shall be
issued against Tenant or any of Tenant's property whereupon the leased premises
shall be  taken or occupied or attempted to be taken or occupied by someone
other than Tenant; or (3) if Tenant shall become bankrupt or insolvent, or file
any debtor proceedings or take or have taken against Tenant in any court
pursuant to any statute either of the United States or of any state a petition
in bankruptcy or insolvency or for reorganization of or for the appointment of a
receiver or trustee of all or a portion of Tenant's property, or if Tenant makes
an assignment for the benefit of creditors then, and in any of such events,
Landlord may, upon five (5) days written notice to Tenant, have the option to
terminate this Lease, re-enter the leased premises either by force or otherwise,
and dispossess Tenant and the legal representative of Tenant or other occupant
of the leased premises, by summary proceedings or otherwise, and remove their
effects and hold the leased premises as if

                                      27
<PAGE>
 
this Lease had not been made, but Tenant shall remain liable hereunder as
hereinafter provided, and Tenant hereby waives any required notice to quit.  If
Tenant shall make default hereunder prior to a date fixed as the commencement of
any renewal or extension of this Lease, Landlord may cancel and terminate such
renewal or extension agreement by written notice, but Tenant shall remain liable
as hereinafter provided.

          C.   In the case of any such default, re-entry , expiration,
and/or dispossess by summary proceedings or otherwise, (a) the fixed rent and
all other payments shall become due thereupon and be paid to the time of such
re-entry, dispossess, and/or expiration, together with such expenses as Landlord
may incur for legal expenses, attorney's fees, brokerage, and/or putting the
leased premises in good order, or for preparing the same for re-rental; (b)
Landlord may relet the leased premises or any part or parts thereof, either in
the name of Landlord or otherwise, for a term or terms, which may, at Landlord's
option, be less than or exceed the period which would otherwise have constituted
the balance of the term of this Lease, and may grant concessions or free rent;
and\or  (c) Tenant or the legal representative of Tenant shall also pay Landlord
as liquidated damages for the failure of Tenant to observe and perform said
Tenant's covenants herein contained, any deficiency between rent and additional
rents hereby reserved and/or covenants to be paid and the net amount, if any, of
the rents collected or to be collected on account of the lease or leases of the
leased premises for each month of the period which would otherwise have
constituted the balance of the term of this Lease.  Landlord shall use
commercially reasonable efforts to relet the leased premises; provided, however,
the failure of Landlord to relet the leased premises or any part or parts
thereof shall not release or affect Tenant's liability for damages.  In
computing such damages, there shall be added to the said deficiency such
expenses as Landlord may incur in connection with reletting, such as legal
expenses, attorneys' fees, brokerage, and  expenses for keeping the leased
premises in good order or for preparing the same for reletting.  Any such
damages shall be paid in monthly installments by Tenant on the rent days
specified in this Lease, and any suit brought to collect the amount of the
deficiency for any month or months shall not prejudice in any way the right of
Landlord to collect the deficiency for any subsequent month or months by a
similar proceeding.  In lieu thereof, Landlord may immediately accelerate such
deficiency for the entire balance of the term.  Landlord at Landlord's option,
may make such alterations, repairs, replacements, and/or decorations in the
leased premises as Landlord in Landlord's sole judgment considers advisable and
necessary for the purpose of reletting the leased premises; and the making of
such alterations and/or decorations shall not operate or be construed to release
Tenant from liability hereunder as aforesaid.  Landlord shall in no event be
liable in any way whatsoever for failure to relet the leased premises, or in the
event that the leased premises are relet, for failure to collect the rent
thereof under such reletting.  Any such action may be an action for the full
amount of all rents and damages suffered or to be suffered by Landlord.  In the
event of a breach or threatened breach by Tenant of any of the covenants or
provisions hereof, Landlord shall have the right of injunction and the right to
invoke any remedy allowed at law or in equity as if re-entry, summary
proceedings, and other remedies were not herein provided for.  Mention in this
Lease of any particular remedy shall not preclude Landlord from any other remedy
in law or in equity.  The foregoing remedies and rights of Landlord are

                                      28
<PAGE>
 
cumulative.  Tenant hereby expressly waives any and all rights of redemption
granted by or under any present or future laws in the event of Tenant's being
evicted or dispossessed for any cause, or in the event of Landlord's obtaining
possession of the leased premises by reason of the violation by Tenant of the
covenants and conditions of this Lease, or otherwise.
 
          21.  Costs of Enforcement.  Tenant covenants that in the event the
               --------------------                                         
Landlord is required to employ an attorney in order to enforce any provision of
this Lease, the Tenant shall pay reasonable attorneys' fees and all other costs
of collection.

          22.  Cleaning, Maintenance and Refuse.  The Landlord will provide all
               --------------------------------                                
exterior maintenance, including, but not limited to, the cutting of the grass
and maintenance of other landscaping, snow plowing, and removal from adjacent
sidewalks; and in addition thereto, provide cleaning service and maintenance for
all halls and lavatories not a part of the leased premises and exterior
stairways. Tenant shall be responsible for cleaning and maintenance of the
leased premises at Tenant's expense, except that Landlord shall be and remain
responsible for cleaning and maintenance of approximately 1,500 square feet of
space located within the Original Space to and including May 31, 1999.  Tenant
shall, at its own expense, keep and maintain refuse dumpsters of a kind approved
or specified by Landlord, in the area specified by Landlord, and prepare same
for collection in the manner and at the times specified by Landlord.

          23.  No Recording.  Notice of Lease.  Tenant covenants that in the
               ------------------------------                               
event this Lease is recorded upon the Land Records of the Town of Branford by
Tenant, it shall become null and void at the option of the Landlord.  The
parties agree to execute and Tenant agrees to record, at its sole cost and
expense, a Notice of Lease setting forth the terms of this Lease.

          24.  Utilities; Security.    Tenant agrees to make its own
               -------------------                                  
arrangements with the public utility company servicing the leased premises for
the furnishing of electricity, telephone and all other utilities (except natural
gas service) used or consumed by Tenant in the leased premises (and specifically
including the New Space), and for the installation of meters therefore.  Except
as provided in paragraph 34 of this Lease,  Landlord shall not be responsible
for charges for electricity, telephone or any other utilities used or consumed
in the leased premises by Tenant, all of which charges shall promptly be paid by
Tenant, when due, to the applicable utility or vendor.  All meters at the leased
premises for the purposes of measuring Tenant's consumption of the respective
utility shall be maintained by Tenant, at Tenant's sole cost and expense, in
good order and condition.  Landlord shall not be liable in any way to Tenant for
any failure or defect in the supply or character of electric energy furnished to
the leased premises.  Interruption or curtailment of such services shall not
constitute a constructive or  partial eviction nor entitle Tenant to any
compensation or abatement of rent.  With respect to water consumption (and to
any other utility which cannot, notwithstanding Tenant's best efforts, be
separately metered), Tenant agrees to pay to Landlord, within thirty (30) days
following submission to Tenant by Landlord of a bill therefore, Tenant's
proportionate share

                                      29
<PAGE>
 
of the total amount of such bill. As used herein, "Tenant's proportionate share"
shall mean the ratio of the gross floor area of the leased premises to the gross
leasable area of the Building, which is hereby agreed to be 49,816 square feet.
In addition to the foregoing water charges, Tenant shall remain obligated to pay
all water charges that pertain to water provided to Tenant which is separately
metered. At its option, Tenant may, at its own cost and expense, make the
necessary connections into Landlord's generator in order to provide for service
to Tenant's Original Space, provided, however, that such generator has the
                            --------  -------
requisite capacity to provide such service, and further, provided that Tenant
                                                -------  -------- 
indemnifies Landlord for any damages to such generator and any loss of use
resulting from Tenant's efforts to connect to, and Tenant's use of, such
generator. Tenant shall give Landlord prior notice of its determination to use
the generator and inform Landlord of the date(s) of anticipated connection
thereto. Landlord shall maintain the generator and shall be responsible for all
costs therefor and for fueling and operation of such generator.

          25.  Notice.  Any and all notices, acceptances or any other
               ------                                                
communication provided for herein shall be given in writing by registered or
certified mail which shall be addressed as set forth below.  Each such notice
shall be deemed given at the time it is mailed in any post office or branch post
office regularly maintained by the United States Government.

  Landlord's Address  -  101 Mapleview Road, Wallingford, Connecticut 06492
         with a copy to: Anthony J. Fazzone, Esquire
                         One Town Center
                         Cheshire, Connecticut 06410

  Tenant's Address   -   322 East Main Street, Branford, Connecticut 06405

          26.  Landlord's Access to Premises.  Landlord shall have the right to
               -----------------------------                                   
enter upon the leased premises at all reasonable hours for the purpose of
inspecting or of making repairs to the same, or exhibiting the same to
prospective purchasers or mortgagees of the Building.  Except in cases of
emergency, Landlord shall make reasonable efforts to contact Tenant and provide
Tenant the opportunity to accompany Landlord in its entry upon the leased
premises.  If repairs are required to be made by Tenant pursuant to the terms
hereof, Landlord may demand that Tenant make the same forthwith, and if Tenant
refuses or neglects to commence such repairs and complete the same within thirty
(30) days after such demand, or within such longer time as is reasonably
required under the circumstances, Landlord may (but shall not be required so to
do) make or cause such repairs to be made and shall not be responsible to Tenant
for any loss or damage that may accrue by reason thereof.  If Landlord makes or
causes such repairs to be made, Tenant agrees that it will forthwith, on demand,
pay to Landlord the reasonable cost thereof as additional rent within the next
month's rent, and if it shall default in such payment, Landlord shall have the
same remedy for the non-payment thereof that as for the non-payment of rent as
herein provided.  For a period commencing six (6) months prior to the
termination of this Lease or any renewal term hereof.   Landlord may have
reasonable access to the leased premises for the purpose of exhibiting the same
to prospective tenants.

                                      30
<PAGE>
 
          27.  Rules and Regulations.  Tenant, its servants, employees, agents,
               ---------------------                                           
visitors and licensees shall observe faithfully, and comply strictly with, the
Rules and Regulations and such other and further reasonable Rules and
Regulations as Landlord or its agents may from time to time adopt.  Nothing in
this Lease contained shall be construed to impose upon Landlord any duty or
obligation to enforce the Rules and Regulations or terms, covenants or
conditions in any other lease, as against any other tenant and Landlord shall
not be liable to Tenant for violation of the same by any other tenant, its
servants, employees, agents, visitors or licensees.  A copy of the current Rules
and Regulations with which Tenant shall comply are attached to this Lease as
Exhibit C.
- --------- 

          28.  No Broker.  Tenant and Landlord each warrants and represents to
               ---------                                                      
the other that neither party has dealt with any real estate broker, salesperson
or finder in connection with this Lease, and each agrees to indemnify and hold
the other harmless from and against any and all claims, suits, liabilities and
expenses (including, without limitation, attorneys' fees and disbursements)
incurred by either party as a result of the foregoing warranty and
representation of the other failing to be true.

          29.  Exculpatory Clause.  Tenant shall look only to Landlord's estate
               ------------------                                              
and property in the Building and the land on which the Building is located for
the satisfaction of Tenant's remedies for the collection of a judgment (or other
judicial process) requiring the payment of money by Landlord in the event of any
default by Landlord hereunder, and no other property or assets of such Landlord
or any principals, shareholders or partners in the same shall be subject to
levy, execution or other enforcement procedure for the satisfaction of Tenant's
remedies under or with respect to this Lease, the relationship of Landlord and
Tenant hereunder or Tenant's use or occupancy of the leased premises.  The
limitation on Tenant's right to look only to Landlord's estate and property in
the Building for satisfaction of remedies for the collection of a judgment (or
other judicial process) requiring the payment of money by Tenant in the event of
any default by Landlord hereunder shall not limit in any way Tenant's right to
specifically enforce any provision of this Lease.

          30.  Licenses and Permits.  Tenant will apply for, comply with and
               --------------------                                         
maintain all licenses and permits necessary of the operation of Tenants's
business in the leased premises, including any environmental, health and safety
permits required because of the nature of Tenant's business.

                                      31
<PAGE>
 
          31.  Additional Use Limitations. Tenant hereby agrees not to: (a)
               --------------------------                                  
overload the floor; (b) in its use of electric current, exceed the capacity of
the existing feeders to the Building or the risers or wiring installation and
Tenant may not use any electrical equipment which, in Landlord's opinion,
reasonably exercised, will overload such installations or interfere with the use
thereof by other tenants of the Building; (c) use the leased premises in a
manner that causes or in Landlord's reasonable opinion would likely cause
physical damage to the Building, or any part thereof; (d) use the leased
premises in a manner that impairs or unreasonably interferes with any Building
services or any machinery or equipment used in connection with operating and
maintaining the Building or unreasonably interferes with, annoys or
inconveniences Landlord or other tenants of the Building.
 
          32.  Interest.  In every case in which Tenant is required by the terms
               --------                                                         
of this Lease to pay to Landlord a sum of money and payment is not made with ten
(10) days after the same shall become due, interest shall be payable on such sum
or so much thereof as shall be unpaid from the date it first became due until it
is paid.  Such interest shall be at an annual rate (the "Interest Rate") which
shall be two (2) percentage points higher than the Prime Lending Rate (as
hereinafter defined), but in no event more than the highest rate of interest
which at such time shall be permitted under the laws of the State of
Connecticut.  The term, "Prime Lending Rate" shall mean the rate announced from
time to time by Citibank, N.A., its successors and assigns, at its main office
in New York, New York as its prime rate; or if such bank shall not exist, the
rate announced by such other commercial bank in New York City as shall be
designated by Landlord as its prime rate.

          33.  Parking.  Tenant and Tenant's employees shall park their cars
               -------                                                      
only in those portions of the parking areas designated for employee parking by
Landlord.  Landlord shall provide Tenant with sixty (60) unreserved parking
spaces.

          34.  Air-Conditioning and Heating.  Landlord shall maintain all
               ----------------------------                              
heating and air-conditioning apparatus servicing the Building and the leased
premises at its own cost and expense and cause heat and air-conditioning service
to be made available to Tenant on a continuous basis throughout the respective
heating and air-conditioning seasons.  Landlord shall pay to Tenant the actual
cost of 16,000 kilowatt hours billed by the electric utility company for the
months of June, July, August and September of each year during the term of this
Lease.  Tenant shall provide Landlord with a copy of electrical bills for the
months of June, July, August and September and Landlord shall pay to Tenant the
amount due within ten (10) days of Landlords' receipt thereof.  Tenant shall pay
as additional rent Landlord's actual yearly cost for the amount of natural gas
that exceeds 17,344 ccf of natural gas used in the operation of the Building for
each calendar year.  Landlord shall provide Tenant with copies of billing
statements from the natural gas utility company for each calendar year of the
term of this Lease and Tenant shall make payment therefor to Landlord within ten
(10) days of Tenant's receipt thereof.

                                      32
<PAGE>
 
Notwithstanding any provision to the contrary contained in this Lease, and
except for the provisions contained in the next sentence following this
sentence,  in the event that the conduct of Tenant's business requires any
upgrade in capacity to, or any alteration, renovation or improvement to the
heating, air-conditioning system or other utility or utility system (as used in
this paragraph 34, collectively, "utility system"),  Tenant shall be responsible
for all costs of materials and labor incurred in connection with any such
upgrade, alteration or improvement undertaken.  In the event any building or
fire code provision or ordinance in effect at the time Tenant makes any such
upgrade, alteration, renovation or improvement to any utility system, requires
that additional measures be taken with respect to any utility system in the
condition in which it exists on the date of this Lease (provided the same has
not been previously altered by Tenant) in order to maintain compliance with such
building or fire code provision or ordinance, and any municipal or governmental
official determines that such additional measures are necessary and requires
that such measures be taken, Tenant shall give Landlord notice and evidence of
such determination and requirement and Landlord

shall make, cause to be made, or pay to Tenant the reasonable costs of labor and
materials for, such upgrade, alteration, renovation or improvement to such
utility system in order to maintain compliance with such building or fire code
or ordinance then in effect.

          35.  Remedies Cumulative.  All rights and remedies of Landlord herein
               -------------------                                             
created or  remedies otherwise existing at law or equity are cumulative and the
exercise of one or more rights or remedies shall not be taken to exclude or
waive the right to be exercised of any other.  All such rights and remedies may
be exercised and enforced concurrently and whenever and as often as Landlord
deems desirable.  The failure of Landlord to insist upon strict performance by
Tenant of any of the covenants, conditions and agreements of this Lease shall
not be deemed a waiver of any of Landlord's rights or remedies and shall not be
deemed a waiver of any of said rights or remedies concerning any subsequent or
continuing breach or default by Tenant of any of the covenants, conditions and
agreements of this Lease.  No surrender of the leased premises shall be effected
by Landlord's acceptance of rental or by any other means whatsoever unless the
same be evidenced by Landlord's written acceptance of such as a surrender.

          36.  Provisions Severable.  If any term or provision of this Lease or
               --------------------                                            
the application thereof to any person or circumstance shall, to any extent, be
invalid or unenforceable, the remainder of this Lease, or the application of
such terms or provisions to persons or circumstances other than those as to
which it is held invalid or unenforceable, shall not be affected thereby and
each term or provision of this Lease shall be valid and be enforced to the
fullest extent permitted by law.

          37.  Lease Not Binding Unless Executed.  Submission by Landlord of the
               ---------------------------------                                
within  Lease for execution by Tenant, shall confer no rights nor impose any
obligations on either party unless and until both Landlord and Tenant shall have
executed this Lease and duplicate originals thereof shall have been delivered to
the respective parties.

                                      33
<PAGE>
 
          38.  Entire Agreement.  This Lease and the Exhibits attached set forth
               ----------------                                                 
the entire agreement between the parties.  Any prior conversations or writings
are merged herein and extinguished.  No subsequent amendment to this Lease shall
be binding upon Landlord or Tenant unless reduced to writing and signed by both
parties.  If any provision contained in any exhibit or rider is inconsistent
with the printed provisions of this Lease, the provision contained in said
exhibit or rider shall supersede said printed provision.

          39.  Estoppel Certificates.  Tenant shall, upon at least ten (10) days
               ---------------------                                            
prior written request by Landlord, execute and deliver to Landlord a written
declaration in recordable form: (1) ratifying this Lease; (2) expressing the
commencement and termination dates thereof; (3) certifying that this Lease is in
full force and effect and has not been assigned, modified, supplemented or
amended (except by such writings as shall be stated); (4) that all conditions
under this Lease to be performed by Landlord have been satisfied; (5) that there
are no defenses or offsets against the enforcement of this Lease by the Landlord
or stating those claimed by Tenant; (6) the amount of advanced rental, if any
(or none if such is the case) paid by Tenant; (7) the date to which rental has
been paid; (8) the amount of security deposited with Landlord (or none if such
is the case); (9) that Tenant has no options or rights of first refusal to
purchase the Building or any part of the premises of which it is a part; (10)
that no actions are pending against the Tenant under the bankruptcy laws of the
United States or any state thereof; (11) that Tenant has not sublet the leased
premises and has not assigned any of its rights under the Lease and, if not, to
state relevant information; (12) to the best of Tenant's knowledge, the use,
maintenance or operation of the leased premises complies with all environmental
laws. Such declaration shall be executed and delivered by Tenant from time to
time as may be requested by Landlord. Landlord's mortgage lenders and/or
purchasers shall be entitled to rely upon the same.

          40.  Captions and Headings.  The captions and headings used in this
               ---------------------                                         
Lease are for convenience and reference only, and in no way shall be used to
construe or modify the provisions set forth in this Lease.

          41.  Holding Over.  Any holding over after the expiration of this term
               ------------                                                     
or any renewal term without Landlord's consent shall be construed to be a
tenancy from month-to-month at one and one-half times the rent herein specified
(150%), prorated on a monthly basis and shall otherwise be on the terms herein
specified so far as applicable.

          42.  Waiver of Jury Trial.  Each of the parties hereto hereby waive
               --------------------                                          
trial by jury in any action, proceeding or counterclaim brought by either of the
parties hereto against the other on any matters whatsoever arising out of or in
any way connected with this Lease, the relationship of Landlord and Tenant,
Tenant's use of or occupancy of the leased premises, and any other statutory
remedy.

                                      34
<PAGE>
 
          43.  Connecticut Law.  This Lease  shall be construed in accordance
               ---------------                                               
with the laws of the State of Connecticut.

          44.  Binding Effect.  The successors and permitted assigns of the
               --------------                                              
parties hereto shall be bound by the terms and conditions of this Lease.

IN WITNESS WHEREOF, the parties have caused these premises to be duly signed and
executed the day and date first above written.


                                         TENANT:
                                         CURAGEN CORPORATION



                                         By: /s/ David Wurzer
                                             ---------------------------
                                             David Wurzer
                                             Its EVP & CFO

                                         LANDLORD:
                                         T.K.J. ASSOCIATES, L.L.C.
                                         

                                         By: /s/ M. Joseph Canavan
                                             ---------------------------
                                             Its Member


                                      35
<PAGE>
 
STATE OF CONNECTICUT  )
                      ) ss:
COUNTY OF NEW HAVEN   )

     The foregoing instrument was acknowledged before me on May 29, 1998 by
David Wurzer, EVP & CFO of CURAGEN CORPORATION, a Delaware corporation, on
behalf of the corporation.

                                    /s/ Jannine M. Malicki
                                    --------------------------------------------
                                    Commissioner of the Superior Court
                                    Notary Public
                                    My Commission Expires: April 30, 2002


STATE OF CONNECTICUT  )
                      ) ss: 
COUNTY OF NEW HAVEN   )

     The foregoing instrument was acknowledged before me on May 29, 1998 by M.
Joseph Canavan, Member of T.K.J. ASSOCIATES, L.L.C., a Connecticut limited
liability company, on behalf of the company.

                                      /s/ Karen DiNicola
                                      ----------------------------------
                                      Commissioner of the Superior Court
                                      Notary Public
                                      My Commission Expires: November 30, 1999

                                      36

<PAGE>
 
                                  EXHIBIT 11

 
                              CURAGEN CORPORATION
                       COMPUTATION OF NET LOSS PER SHARE
                      ATTRIBUTABLE TO COMMON STOCKHOLDERS
                                  (unaudited)

<TABLE>
<CAPTION>
                                                              THREE MONTHS ENDED                SIX MONTHS ENDED
                                                                     JUNE 30,                        JUNE 30,
                                                       --------------------------------     ---------------------------
                                                            1998               1997            1998             1997
                                                       ----------------    ------------     -----------    ------------
<S>                                                    <C>                 <C>             <C>             <C>
Net loss                                                    ($2,499,017)    ($1,460,086)    ($5,666,530)    ($1,996,570)
Preferred dividends                                                   -         (17,106)       (508,435)        (34,212)
                                                       ----------------     -----------     -----------     -----------
Net loss attributable to common stockholders                ($2,499,017)    ($1,477,192)    ($6,174,965)    ($2,030,782)
                                                       ----------------     -----------     -----------     -----------
Basic and diluted net loss per share attributable
   to common stockholders                                        ($0.19)         ($0.18)         ($0.55)         ($0.29)
                                                       ----------------     -----------     -----------     ----------- 
Weighted average number of shares used in
   computing basic and diluted net loss per share
   attributable to common stockholders                       13,059,502       8,239,913      11,134,192       6,888,476
                                                       ----------------     -----------     -----------     ----------- 
</TABLE> 

                                      37

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                      53,980,805
<SECURITIES>                                         0
<RECEIVABLES>                                  725,663
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            55,224,799
<PP&E>                                      14,746,309
<DEPRECIATION>                               2,756,705
<TOTAL-ASSETS>                              67,781,413
<CURRENT-LIABILITIES>                        6,979,412
<BONDS>                                              0
                                0
                                          0
<COMMON>                                       131,601
<OTHER-SE>                                  54,348,061
<TOTAL-LIABILITY-AND-EQUITY>                67,781,413
<SALES>                                              0
<TOTAL-REVENUES>                             4,705,198
<CGS>                                                0
<TOTAL-COSTS>                                7,903,776
<OTHER-EXPENSES>                             3,075,617
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                            (5,666,530)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (5,666,530)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (6,174,965)
<EPS-PRIMARY>                                   (0.55)
<EPS-DILUTED>                                   (0.55)
        

</TABLE>


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