CUBIST PHARMACEUTICALS INC
10-Q, 1997-11-14
PHARMACEUTICAL PREPARATIONS
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<PAGE>


                                       
                      SECURITIES AND EXCHANGE COMMISSION 
                            Washington, D.C. 20549


                                   FORM 10-Q


X   Quarterly report under Section 13 or 15(d) of the Securities Exchange 
Act of 1934 For the period ended September 30, 1997
                                       
                                      OR
 
__  Transition report pursuant to Section 13 or 15 (d) of the Securities
Exchange Act of 1934 Commission file number 0-21379

 
                         CUBIST PHARMACEUTICALS, INC.
            (Exact name of registrant as specified in its charter)
 
                Delaware                               22-3192085
     (State or other jurisdiction of                (I.R.S. Employer
     incorporation or organization)                 Identification No.)

                                       
                                 24 Emily Street
                         Cambridge, Massachusetts 02139
                    (Address of principal executive offices)

                                 (617) 576-1999 
              (Registrant's telephone number, including area code)
 

                                      None
                      (Former name, former address and former
                     fiscal year, if changed since last report)
 
    Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes  X   No    
                                              ---     ---
    As of October 31, 1997, there were 10,580,689 shares outstanding of the 
Company's common stock, $0.001 per value per share.



<PAGE>
                          CUBIST PHARMACEUTICALS, INC.
 
                                     INDEX
 
<TABLE>
<CAPTION>
ITEM                                                                       PAGE
NUMBER                                                                     NUMBER
- ------                                                                     ------ 
<S>        <C>                                                             <C>     
PART I.    FINANCIAL INFORMATION
 
  Item 1.  Condensed Unaudited Financial Statements

           Condensed Balance Sheets as of September 30, 1997 and
             December 31, 1996                                              3

           Condensed Statements of Operations for the three
             months ended September 30, 1997 and 1996 and for the
             nine months ended September 30, 1997 and 1996                  4

           Condensed Statements of Cash Flows for the nine
             months ended September 30, 1997 and 1996                       5

           Notes to the Unaudited Condensed Financial Statements            6

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

PART II. OTHER INFORMATION

  Item 2.  Changes in Securities and Use of Proceeds                       12
  
  Item 4.  Submission of Matters to a Vote of Security Holders             13
  
  Item 6.  Exhibits and Reports on Form 8-K                                13
    
           Signature                                                       14
</TABLE>
 
                                       2
<PAGE>
                         PART I--FINANCIAL INFORMATION

ITEM 1. CONDENSED FINANCIAL STATEMENTS

                         CUBIST PHARMACEUTICALS, INC. 
                           CONDENSED BALANCE SHEETS 
                               (unaudited)

<TABLE>
<CAPTION>
                                                                                     SEPTEMBER 30,  DECEMBER 31,
                                                                                         1997           1996
                                                                                     -------------  -------------
<S>                                                                                  <C>            <C>
                                  ASSETS
Current Assets:
  Cash and cash equivalents........................................................  $   8,357,100  $  19,329,353
  Short-term investments...........................................................      6,578,808       --
  Accounts receivable..............................................................        111,000        505,267
  Prepaid expenses and other current assets........................................        419,338        286,642
                                                                                     -------------  -------------
  Total current assets.............................................................     15,466,246     20,121,262
Property and equipment.............................................................      5,834,144      4,898,538
  Less: Accumulated depreciation and amortization..................................     (2,454,054)    (1,741,152)
                                                                                     -------------  -------------
  Property and equipment, net......................................................      3,380,090      3,157,386
Long-term investments..............................................................      5,515,413       --
Other assets.......................................................................        180,294        173,799
                                                                                     -------------  -------------
    Total assets...................................................................  $  24,542,043  $  23,452,447
                                                                                     -------------  -------------
                                                                                     -------------  -------------
                      LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable.................................................................  $     332,185  $     741,409
  Accrued expenses.................................................................        395,715        484,732
  Deferred revenue.................................................................         42,300        126,900
  Current portion of long-term debt................................................        205,681        188,062
  Current portion of capital lease obligations.....................................        613,586        559,767
                                                                                     -------------  -------------
    Total current liabilities......................................................      1,589,467      2,100,870
Long-term debt, net of current portion.............................................        133,754        291,683
Long-term capital lease obligation, net of current portion.........................      1,111,864        761,284
                                                                                     -------------  -------------
    Total liabilities..............................................................      2,835,085      3,153,837
                                                                                     -------------  -------------
Commitments
Stockholders' Equity:
Common Stock--$.001 par value; 
  authorized: 25,000,000 shares, 1997 and 1996; 
  issued: 10,577,544 shares, 1997 and 9,544,373 shares, 1996.......................         10,578          9,544
Additional paid-in capital.........................................................     42,042,289     36,019,608
Accumulated deficit................................................................    (20,345,909)   (15,730,542)
                                                                                     -------------  -------------
    Total stockholders' equity.....................................................     21,706,958     20,298,610
                                                                                     -------------  -------------
    Total liabilities and stockholders' equity.....................................  $  24,542,043  $  23,452,447
                                                                                     -------------  -------------
                                                                                     -------------  -------------
</TABLE>

    The accompanying notes are an integral part of the unaudited condensed 
                         financial statements.

                                       3
<PAGE>

                          CUBITS PHARMACEUTICALS, INC.
                       CONDENSED STATEMENTS OF OPERATIONS
                                   UNAUDITED

<TABLE>
<CAPTION>

                                                                THREE MONTHS ENDED         NINE MONTHS ENDED
                                                                  SEPTEMBER 30,              SEPTEMBER 30,
                                                             ------------------------  --------------------------
<S>                                                          <C>           <C>         <C>           <C>
                                                                 1997         1996         1997          1996
                                                             ------------  ----------  ------------  ------------
Sponsored research revenues................................  $    402,667  $  960,879  $  2,081,267  $  3,007,532
Operating expenses:
 Research and development..................................     2,450,564   1,656,048     6,754,724     4,838,657
 General and administrative................................       783,139     463,121     2,362,476     1,336,707
                                                             ------------  ----------  ------------  ------------
  Total operating expenses.................................     3,233,703   2,119,169     9,117,200     6,175,364
Interest income............................................       237,643      68,409       771,400       111,641
Interest expense...........................................       (64,187)    (65,494)     (184,168)     (172,397)
Other income (Note C)......................................     1,833,334      --         1,833,334       --
                                                             ------------  ----------  ------------  ------------
Net loss...................................................     ($824,246)($1,155,375)  ($4,615,367)  ($3,228,588)
                                                             ------------  ----------  ------------  ------------
                                                             ------------  ----------  ------------  ------------
Net loss per common share..................................        ($0.08)     ($0.85)       ($0.47)       ($2.37)
                                                             ------------  ----------  ------------  ------------
                                                             ------------  ----------  ------------  ------------
Weighted average number of common shares...................    10,384,786   1,361,200     9,828,971     1,363,235
                                                             ------------  ----------  ------------  ------------
                                                             ------------  ----------  ------------  ------------
</TABLE>

    The accompanying notes are an integral part of the unaudited condensed
                             financial statements.

                                       4
<PAGE>
                          CUBIST PHARMACEUTICALS, INC.
                       CONDENSED STATEMENTS OF CASH FLOWS
                                   UNAUDITED

<TABLE>
<CAPTION>

                                                                               NINE MONTHS ENDED
                                                                                   SEPTEMBER 30,
                                                                       ---------------------------------
                                                                            1997              1996
                                                                       ----------------  ---------------
<S>                                                                     <C>               <C>
Cash Flows from operating activities:
  Net loss...........................................................   $ (4,615,367)     $ (3,228,588)
  Adjustments to reconcile net loss to net cash provided by/
    (used in) operating activities:
    Depreciation and amortization....................................        759,180           490,814
    Changes in assets and liabilities:
      Accounts receivable............................................        394,267           988,000
      Prepaid expenses and other current assets......................       (132,696)         (739,838)
      Other assets...................................................         (6,495)          (12,689)
      Accounts payable and accrued expenses..........................       (498,241)          898,634
      Deferred revenue...............................................        (84,600)             --
                                                                           -----------       -----------
        Total adjustments............................................        431,415         1,624,921
                                                                           -----------       -----------
Net cash used in operating activities................................     (4,183,952)       (1,603,667)

Cash flows from investing activities:
  Purchase of fixed assets...........................................       (841,128)         (405,019)
  Leasehold improvements.............................................        (94,478)         (266,683)
  Purchase of short-term investments.................................     (6,578,808)            --
  Redemption of short-term investments...............................          --            1,006,569
  Purchase of long-term investments..................................     (5,515,413)            --
                                                                          -----------        -----------
Net cash provided by/(used in) investing activities..................    (13,029,827)          334,867
                                                                          -----------        -----------

Cash flows from financing activities:
  Issuance of stock..................................................      5,977,437         3,955,392
  Repayments of debt.................................................       (140,310)         (124,519)
  Proceeds from capital lease financing..............................        890,644           383,525
  Principal payments of capital lease obligations....................       (486,245)         (330,168)
                                                                          -----------        -----------

Net cash provided by financing activities.............................     6,241,526         3,884,230
                                                                          -----------        -----------


Net increase (decrease) in cash and cash equivalents..................   (10,972,253)        2,615,430
Cash and cash equivalents, 
 beginning of period..................................................    19,329,353         2,049,555
                                                                         -----------        -----------
Cash and cash equivalents, 
 end of period........................................................    $8,357,100       $ 4,664,985
                                                                         -----------        -----------
                                                                         -----------        -----------

Supplemental disclosures of cash flow information:
  Cash paid during the year for interest...............................     $184,168       $   172,397
</TABLE>
 
    The accompanying notes are an integral part of the unaudited condensed
                          financial statements.
 

                                     5

<PAGE>
                                       
                         CUBIST PHARMACEUTICALS, INC. 
           NOTES TO THE UNAUDITED CONDENSED FINANCIAL STATEMENTS
 
NOTE A. NATURE OF BUSINESS
 
    Cubist Pharmaceuticals, Inc. ("Cubist" or the "Company") is a
biopharmaceutical company founded in May 1992 and is engaged in the research,
development and commercialization of novel classes of antiinfective drugs to
treat infectious diseases caused by bacteria and fungi, primarily those
resistant to existing antiinfective drugs. Cubist has established multiple
technology licenses and collaborations and has established a network of advisors
and collaborators. The Company is located in Cambridge, Massachusetts.
 
NOTE B. ACCOUNTING POLICIES
 
  BASIS OF PRESENTATION
 
    The accompanying unaudited condensed financial statements reflect all
adjustments, consisting of normal recurring adjustments, which are necessary, in
the opinion of management, for a fair presentation of the results of the interim
periods presented. Interim results are not necessarily indicative of results for
a full year. These unaudited condensed financial statements do not include all
information and footnote disclosures required by generally accepted accounting
principles and therefore should be read in conjunction with the Company's
audited financial statements and related footnotes for the year ended December
31, 1996 which are included in the Company's Annual Report on Form 10-K. Such
Annual Report on Form 10-K was filed by the Company with the Securities and
Exchange Commission (the "Commission") on March 31, 1997.
 
  NET LOSS PER COMMON SHARE
 
    The net loss per common share is computed based upon the weighted average
number of common shares and common equivalent shares (using the treasury stock
method) outstanding after certain adjustments described below. Common equivalent
shares are not included in the per share calculations where the effect of their
inclusion would be anti-dilutive, except that, in accordance with Securities and
Exchange Commission Staff Accounting Bulletin No. 83, all common and common
equivalent shares issued during the twelve-month period prior to the filing with
the Commission of the registration statement relating to the Company's initial
public offering, even when anti-dilutive, have been included in the calculation
as if they were outstanding for all periods, using the treasury stock method and
the initial public offering price of $6.00 per share.
 
    Effective December 31, 1997, the Company will adopt Statement of Financial
Accounting Standards No. 128 (SFAS 128) "Earnings per Share", which will require
the disclosure of Basic Earnings per Common Share and Diluted Earnings per
Common Share, both as defined in the standard, for all periods presented. Early
application of SFAS 128 is not allowed, but pro forma disclosure is allowed. The
Company does not expect this to have a material impact on the earnings per share
computation.
 
NOTE C. COLLABORATIVE AGREEMENT
 
    The Company and Novalon Pharmaceutical Corporation ("Novalon") entered 
into a collaborative research agreement on May 5, 1997 to accelerate and 
broaden the development of technologies to screen genomic targets. On 
September 29, 1997, the Company extended its collaboration with Novalon 
through February 2001. The extended collaboration will focus on utilizing 
these targets to identify lead compounds active against the Company's 
antibacterial and antifungal targets. In addition, the Company agreed to 
terminate its option to acquire Novalon and sold its existing equity position 
back to Novalon for $2.0 million resulting in a gain of $1.8 million included 
in other income. In connection with such transaction, the Company was granted 
an option to purchase up to twenty percent of the outstanding shares of 
Novalon from existing shareholders.

                                       6
<PAGE>
 
    On September 25, 1997, the Company expanded its research collaboration with
Merck & Co., Inc. ("Merck"), adding additional aminoacyl-tRNA synthetase targets
that are proprietary to the Company and Merck's natural products compound
library to the drug discovery program.
 
NOTE D. FINANCING
 
    On July 18, 1997, the Company completed a private equity financing in which
the Company raised $6.0 million by issuing 979,594 common shares at $6.125 per
share.
 
NOTE E. SUBSEQUENT EVENT
 
  LICENSE AGREEMENT
 
    On November 7, 1997, the Company entered into a license agreement with Eli
Lilly and Company ("Eli Lilly") pursuant to which the Company acquired exclusive
worldwide rights to develop, manufacture and market daptomycin. Daptomycin is a
novel, natural product being developed for the treatment of Staphylococcus
aureus and enterococcal infections. The Company anticipates that it will begin 
clinical trials of daptomycin in late 1998. In exchange for such license, the 
Company has agreed to pay an upfront license fee in cash and, if certain drug 
development milestones are achieved, to pay milestone payments by issuing 
shares of Common Stock to Eli Lilly. In addition, the Company will be required 
to pay royalties to Eli Lilly on worldwide sales of daptomycin.

                                       7
<PAGE>
 
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS
 
    Except for the historical information contained herein, this quarterly 
Report on Form 10-Q may contain "forward-looking statements" within the 
meaning of Section 27A of the Securities Act of 1933 and Section 21E of the 
Securities Exchange Act of 1934, including, but not limited to, (i) 
statements about the adequacy of the Company's cash, cash equivalents, other 
capital resources, interest income, other income and future revenues due 
under the Company's collaborative agreements to fund its operating expenses 
and capital requirements as currently planned through mid-1998, (ii) 
statements about the amount of capital expenditures that the Company expects 
to incur in 1997, (iii) statements about the Company's plans to begin 
clinical trials of daptomycin in late 1998, and (iv) certain statements 
identified or qualified by words such as "likely", "will", "suggests", "may", 
"would", "could", "should", "expects", "anticipates", "estimates", "plans", 
"projects", "believes", or similar expressions (and variants of such words or 
expressions). Investors are cautioned that forward-looking statements are 
inherently uncertain. Actual performance and results of operations may differ 
materially from those projected or suggested in the forward-looking 
statements due to certain risks and uncertainties, including, but not limited 
to, the risks and uncertainties described or discussed in the section "Risk 
Factors" in the Company's Annual Report on Form 10-K for the fiscal year 
ended December 31, 1996. The forward-looking statements contained herein 
represent the Company's judgment as of the date of this quarterly report on 
Form 10-Q, and the Company cautions readers not to place undue reliance on 
such statements.
 
OVERVIEW
 
    Since its incorporation on May 1, 1992 and commencement of operations in
February 1993, Cubist has been engaged in the research, development and
commercialization of novel antiinfective drugs to treat infectious diseases
caused by bacteria and fungi, primarily those resistant to existing
antiinfective drugs. The Company has a limited history of operations and has
experienced significant operating losses since inception. The Company expects to
incur significant additional operating losses over the next several years and
expects cumulative losses to increase substantially due to expanded research and
development efforts, pre-clinical and clinical trials and development of
manufacturing, marketing and sales capabilities.
 
    A key element of the Company's strategy is to enhance certain of its drug
discovery and development programs and to fund its capital requirements, in
part, by entering into collaborative agreements with major pharmaceutical
companies. The Company is party to collaborative agreements based specifically
on its aminoacyl-tRNA synthetase program with Bristol-Myers Squibb Company
("Bristol-Myers Squibb") and Merck & Co., Inc. ("Merck"). Under these
collaborative agreements, the Company is entitled to receive research support
payments and, if certain drug development milestones are achieved, milestone
payments. In addition, the Company will be entitled to receive royalties on
worldwide sales of any drug developed and commercialized from these
collaborations.
 
    On November 7, 1997, the Company entered into a license agreement with Eli
Lilly and Company ("Eli Lilly") pursuant to which the Company acquired exclusive
worldwide rights to develop, manufacture and market daptomycin. Daptomycin is a
novel, natural product being developed for the treatment of Staphylococcus
aureus and enterococcal infections. The Company anticipates that it will begin 
clinical trials of daptomycin in late 1998. In exchange for such license, the 
Company has agreed to pay an upfront license fee in cash and, if certain drug 
development milestones are achieved, to pay milestone payments by issuing 
shares of Common Stock to Eli Lilly. In addition, the Company will be required 
to pay royalties to Eli Lilly on worldwide sales of daptomycin.
 
    The Company and Novalon Pharmaceutical Corporation ("Novalon") entered into
a collaborative research agreement on May 5, 1997 to accelerate and broaden the
development of technologies to screen genomic targets. On 

                                       8
<PAGE>

September 29, 1997, the Company extended its collaboration with Novalon 
through February 2001. The extended collaboration will focus on utilizing 
these targets to identify lead compounds active against the Company's 
antibacterial and antifungal targets. In addition, the Company agreed to 
terminate its option to acquire Novalon and sold its existing equity position 
back to Novalon for $2.0 million resulting in a gain of $1.8 million included 
in other income. In connection with such transaction, the Company was granted 
an option to purchase up to twenty percent of the outstanding shares of 
Novalon from existing shareholders.
 
    On September 25, 1997, the Company expanded its research collaboration with
Merck, adding additional aminoacyl-tRNA synthetase targets that are proprietary
to the Company and Merck's natural products compound library to the drug
discovery program.

RESULTS OF OPERATIONS
 
  THREE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996
 
    REVENUES.  Total revenues in the three months ended September 30, 1997 were
$403,000 compared to $961,000 in the three months ended September 30, 1996, a
decrease of $558,000 or 58.1%. The revenue earned in the three months ended
September 30, 1997 consisted of research support funding from the Bristol-Myers
Squibb and Merck collaborations, and SBIR funding. In the three months ended
September 30, 1996, revenues consisted of research support funding from the
Bristol-Myers Squibb and Pfizer collaborations, and SBIR funding. The decrease
in revenues was primarily due to the absence of Pfizer research support funding
for the three months ended September 30, 1997 as compared to the three months
ended September 30, 1996.
 
    RESEARCH AND DEVELOPMENT EXPENSES.  Total research and development expenses
in the three months ended September 30, 1997 were $2,451,000 compared to
$1,656,000 in the three months ended September 30, 1996, an increase of $795,000
or 47.9%. The increase was largely due to (i) amortization of the Company's
purchase option in Novalon over the term of the Company's option to acquire
Novalon, and (ii) purchases of laboratory research supplies.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses in
the three months ended September 30, 1997 were $783,000 compared to $463,000 in
the three months ended September 30, 1996, an increase of $320,000 or 69.1%. The
increase was largely due to (i) increased costs related to additional personnel
and recruiting, (ii) the cost of premiums for directors' and officers'
insurance, (iii) investor and public relation expenses which did not exist prior
to the Company's initial public offering, and (iv) increased legal expenses .
 
    INTEREST INCOME AND EXPENSE.  Interest income in the three months ended
September 30, 1997 was $238,000 compared to $68,000 in three months ended
September 30, 1996, an increase of $170,000 or 250.0%. The increase in interest
income was due primarily to a higher average cash, cash equivalent and
investment balance during the three months ended September 30, 1997 as compared
to the three months ended September 30, 1996. Interest expense in the three
months ended September 30, 1997 was $64,000 as compared to $65,000 during the
three months ended September 30, 1996.
 
    OTHER INCOME.  Other income in the three months ended September 30, 1997 was
$1,833,000 and consisted entirely of gain on the sale of the Company's equity
position in Novalon.
 
    NET LOSS.  The net loss during the three months ended September 30, 1997 was
$824,000 compared to $1,155,000 during the three months ended September 30,
1996, a decrease of $331,000 or 28.6%. The decrease was primarily due to the
gain on the sale of the Company's equity position in Novalon.

                                       9
<PAGE>
 
  NINE MONTHS ENDED SEPTEMBER 30, 1997 AND 1996
 
    REVENUES.  Total revenues in the nine months ended September 30, 1997 
were $2,081,000 compared to $3,008,000 in the nine months ended September 30, 
1996, a decrease of $927,000 or 30.8%. The revenue recognized in the nine 
months ended September 30, 1997 consisted of research support payments from 
Bristol-Myers Squibb, Merck and Pfizer; milestone payments from Bristol-Myers 
Squibb; and SBIR grant funding. In the nine months ended September 30, 1996, 
revenues consisted of research support payments from Bristol-Myers Squibb, 
Merck and Pfizer; technology license fee revenues from Merck and SBIR grant 
funding.
 
    RESEARCH AND DEVELOPMENT EXPENSES.  Total research and development expenses
in the nine months ended September 30, 1997 were $6,755,000 compared to
$4,839,000 in the nine months ended September 30, 1996, an increase of
$1,916,000 or 39.6%. The increase was largely due to (i) amortization of the
Company's purchase option in Novalon over the term of the Company's option to
acquire Novalon, (ii) increased costs related to ten additional employees hired
by the Company in connection with its research and development programs and
(iii) purchases of laboratory research supplies that were required by such
additional personnel.
 
    GENERAL AND ADMINISTRATIVE EXPENSES.  General and administrative expenses in
the nine months ended September 30, 1997 were $2,362,000 compared to $1,337,000
in the nine months ended September 30, 1996, an increase of $1,025,000 or 76.6%.
The increase was primarily due to (i) increased costs related to additional
personnel and recruiting, (ii) the cost of premiums for directors' and officers'
insurance, (iii) costs associated with the Company's investor and public
relations program, which did not exist prior to the Company's initial public
offering and (iv) increased legal expenses.
 
    INTEREST INCOME AND EXPENSE.  Interest income in the nine months ended
September 30, 1997 was $771,000 compared to $112,000 in the nine months ended
September 30, 1996, an increase of $659,000 or 588.4%. The increase in interest
income was due primarily to a higher average cash, cash equivalent and
investment balance during the nine months ended September 30, 1997 as compared
to the nine months ended September 30, 1996. Interest expense in the nine months
ended September 30, 1997 was $184,000 as compared to $172,000 during the nine
months ended September 30, 1996.
 
    OTHER INCOME.  Other income in the nine months ended September 30, 1997 was
$1,833,000 and consisted entirely of gain on the sale of the Company's equity
position in Novalon.
 
    NET LOSS.  The net loss during the nine months ended September 30, 1997 was
$4,615,000 compared to $3,229,000 during the nine months ended September 30,
1996, an increase of $1,386,000 or 42.9%. The increase was primarily due to (i)
a decrease in revenues during the nine months ended September 30, 1997, (ii) an
increase in expenses incurred by the Company to support the advancement of the
Company's internal research programs, and (iii) costs associated with the
Company's investor and public relations program. This increase in net loss was
partially offset by the non-recurring gain on the sale of the Company's equity
position in Novalon.

                                       10
<PAGE>
 
LIQUIDITY AND CAPITAL RESOURCES
 
    Since inception, the Company has financed its operations through the sale of
equity securities, equipment financing, sponsored research revenues, license
revenues and interest earned on invested capital. The Company's total cash, cash
equivalent and investments balance at September 30, 1997 was $20,451,000
compared to $19,329,000 at December 31, 1996. For the three months ended
September 30, 1997, the Company received $608,000 in sponsored research
payments.
 
    On July 18, 1997, the Company completed a private equity financing in which
the Company raised $6.0 million by issuing 979,594 common shares at $6.125 per
share.
 
    On September 29, 1997, the Company received a cash payment of $2.0 
million from Novalon in connection with the purchase of the Company's equity 
position in Novalon.
 
    Through September 30, 1997, the Company's collaborative partners have
provided the Company with $7.6 million of research support payments and
technology licensing fees, and $4.0 million in an equity investment. There can
be no assurance that the Company will receive any additional funding from any of
the Company's collaborative partners.
 
    As of September 30, 1997, the Company had invested an aggregate of
$5,834,000 (of which $57,000 was invested during the three months then ended) in
property and equipment, primarily in facility renovations and laboratory
equipment under capital leases. The obligations under capital leases at
September 30, 1997 were $1,725,000. Minimum annual principal payments due under
capital leases total $837,000 in 1997. Principal payments decline each year
thereafter until expiration in 2001. The Company made principal payments under
its capital lease obligations of $486,000 in the nine months ended on September
30, 1997. The Company expects its capital expenditures in 1997 to be
approximately $1,000,000 consisting of laboratory and other equipment purchases.
 
    The Company believes that its existing capital resources, interest income
and future revenues due under the Bristol-Myers Squibb and Merck collaborative
agreements will be sufficient to fund its operating expenses and capital
requirements as currently planned through mid-1998. The Company's actual cash
requirements may vary materially from those now planned and will depend on
numerous factors. There can be no assurance that the Company's existing cash,
cash equivalents, other capital resources, interest income and future revenues
due under the Bristol-Myers Squibb and Merck collaborative agreements will be
sufficient to fund its operating expenses and capital requirements during such
period. Thereafter, the Company will need to raise substantial additional
capital to fund its operations. The Company intends to seek such additional
funding through public or private financing or collaborative or other
arrangements with corporate partners.
 
EARNINGS PER SHARE
 
    Effective December 31, 1997, the Company will adopt Statement of Financial
Accounting Standards 128 (SFAS 128) "Earnings per share", which will require the
disclosure of Basic Earnings per Common Share and Diluted Earnings per Common
Share, both as defined in the standard, for all periods presented. Early
application of SFAS 128 is not allowed, but pro forma disclosure is allowed. The
Company does not expect to have a material impact on the earnings per share
computation.

                                       11
<PAGE>
 
                           PART II--OTHER INFORMATION
 
ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS

    (a) Not applicable.

    (b) Not applicable.
 
    (c) On July 18, 1997, the Company completed a private equity financing in 
which the Company raised $6.0 million by issuing 979,594 common shares at 
$6.125 per share. The issuance and sale of such common shares by the Company 
was made in reliance upon Section 4(2) of the Securities Act of 1933, as 
amended (the "Securities Act").
 
    (d) The Company's Registration Statement on Form S-1 (Reg. No. 333-6795) in
connection with the Company's initial public offering of Common Stock was
declared effective by the Securities and Exchange Commission (the "SEC") on
October 25, 1996. On October 25, 1996, the Company also filed another
Registration Statement on Form S-1 (Reg. No. 333-5880) with the SEC, which
became effective immediately upon its filing with the SEC pursuant to Rule
462(b) promulgated under the Securities Act. Such Registration Statements
(together, the "IPO Registration Statement") provided for the registration under
the Securities Act of 2,875,000 shares of the Company's Common Stock. On October
25, 1996, the Company entered into an Underwriting Agreement with UBS Securities
LLC, Hambrecht & Quist LLC and Pacific Growth Equities, Inc., as representatives
of the several underwriters named on Schedule A thereto (the "Underwriters"),
pursuant to which (x) the Underwriters agreed to purchase from the Company
2,500,000 shares of its Common Stock at the public offering price of $6.00 per
share, less underwriting discounts and commissions of $0.42 per share, and (y)
the Company granted to the Underwriters an option to purchase an additional
375,000 shares of Common Stock, solely to cover over-allotments, at the public
offering price of $6.00 per share, less underwriting discounts and commissions
of $0.42 per share. On October 30, 1996, the Underwriters consummated the
purchase of such 2,500,000 shares of Common Stock, and on November 6, 1996, the
Underwriters consummated the purchase of such additional 375,000 shares of
Common Stock upon exercise of the Underwriters' over-allotment option.
 
    The aggregate initial public offering price for all 2,875,000 shares of
Common Stock registered under the Securities Act pursuant to the IPO
Registration Statement was $17,250,000, the aggregate amount paid by the Company
to the Underwriters in respect of underwriting discounts and commissions
relating to the issuance and distribution of all of such 2,875,000 shares of
Common Stock was $1,207,500, and the aggregate amount of other expenses paid by
the Company in connection with such issuance and distribution was $890,000. The
aggregate amount of all expenses (including underwriting discounts and
commissions) paid by the Company in connection with such issuance and
distribution was $2,097,500. All of such expenses consisted of direct payments
to persons, none of which was a director or officer of the Company, holder of 10
percent or more of any class of equity securities of the Company or other
affiliate of the Company. The net proceeds to the Company from such issuance and
distribution, after deducting the aggregate amount of expenses (including
underwriting discounts and commissions) paid by the Company in connection
therewith, were $15,152,500.
 
    Of such net proceeds, an aggregate of $6,878,000 has been spent through
September 30, 1997 for the following uses and in the following amounts per use:
$245,000 in construction of plant, building and facilities; $777,000 for
repayment of indebtedness; $5,856,000 for working capital. All amounts spent by
the Company for such uses consisted of direct payments to persons or entities,
none of which was a director or officer of the Company, holder of 10 percent or
more of any class of equity securities of the Company or other affiliate of the
Company. The remaining balance of such net proceeds, consisting of $8,274,500,
are held in cash or cash equivalents.

                                       12
<PAGE>
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
    The Annual Meeting of Stockholders was held on May 19, 1997. Of the
9,557,057 shares issued and outstanding and eligible to vote as of the record
date of April 11, 1997, a quorum of 6,945,215 shares or 72.7% of the eligible
shares were present in person or represented by proxy.
 
    The following matters were voted on at such meeting:
 
    (a) Re-election of the following Class I Directors:
 
<TABLE>
<CAPTION>
                                                               NUMBER OF SHARES
                                                               ----------------
                                                                         WITHHELD
                                                            FOR          AUTHORITY
                                                         ----------  -----------------
<S>                                                      <C>         <C>
Terrance G. McGuire....................................   5,268,607         18,009
Ellen M. Feeney........................................   5,268,607         18,009
</TABLE>
 
ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K
 
<TABLE>
<S>              <C>        <C>
(a)              Exhibits
                +10.1--     Research Collaboration and License
                            Agreement with Novalon Pharmaceutical
                            Corporation
                +10.2--     Addendum to the Research and License
                            Agreement with Novalon Pharmaceutical
                            Corporation
                +10.3--     Licensing Agreement with Eli Lilly and
                            Company
                 11--       Statement of Computation of Earnings Per
                            Share
                 27--       Financial Data Schedule
</TABLE>
 
_____________ 

+Confidential treatment requested as to certain portions
 
    (b) Reports on Form 8-K
 
    No reports on Form 8-K were filed by the Company during the quarter ended
September 30, 1997.

                                       13
<PAGE>
 
                                   SIGNATURE
 
    Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.
 
                                       CUBIST PHARMACEUTICALS, INC.



November 14, 1997                      BY: /s/ Thomas  A. Shea
                                           --------------------------------
                                           Thomas A. Shea,
                                           Director of Finance
                                           & Administration and Treasurer
                                           (Authorized Officer and Principal
                                           Finance and Accounting Officer)
 


                                       14

<PAGE>

                                                                    Exhibit 10.1
                                           
                                           
                              Research Collaboration and
                                  License Agreement
                                           


                             Cubist Pharmaceuticals, Inc.
                         Novalon Pharmaceuticals Corporation
                                           


                               Dated as of May 5, 1997
                                            

<PAGE>
    
    
                     Research Collaboration and License Agreement
                                            
    
    RESEARCH COLLABORATION AND LICENSE AGREEMENT, dated as of May 5, 1997 (the
Effective Date), by and between Cubist Pharmaceuticals, Inc., a Delaware
corporation (Cubist) and Novalon Pharmaceutical Corporation, a Delaware
corporation (Novalon).
    
    WHEREAS, Cubist and Novalon have entered into a Series B Convertible
Preferred Stock Purchase Agreement, dated as of May 5, 1997 (the Stock Purchase
Agreement), pursuant to which Cubist purchased shares of the Series B
Convertible Preferred Stock of Novalon and agreed to engage in a collaborative
"BioKeys" research project and the "ElectroScreen" research project with
Novalon.
    
    WHEREAS, pursuant to Section 7.6 of the Stock Purchase Agreement, Cubist
and Novalon agreed to negotiate and enter into this Agreement to set forth in
greater detail the rights and obligations of the parties with respect to the
research projects.
    
    WHEREAS, Novalon has the right to grant licenses with respect to certain
Novalon Patent Rights and Novalon Technology (as each is defined herein) and
desires to grant a license thereto; and
    
    WHEREAS, Cubist desires to obtain a license to use and practice the Novalon
Patent Rights and Novalon Technology to develop products;
    
    NOW, THEREFORE, in consideration of the mutual promises and agreements set
forth herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Cubist and Novalon hereby agree as
follows:
    
    Section 1.     Definitions.  Capitalized terms used in this Agreement shall
have the meanings set forth in Schedule I annexed hereto.
    
    Section 2.     Research Collaboration.
    
    2.1  Collaboration.
    
    (a)  Cubist and Novalon hereby agree (i) to engage in the
         Collaborative "BioKeys" Research Project and the "ElectroScreen"
         Research Project, all as described in Exhibit A, (ii) to engage in the
         research activities described in Section 2.1(b) and (c) below and
         (iii) to engage in such other research activities as the parties may
         agree upon from time to time.  The terms and Conditions of the
         Collaboration and of all research activities of the parties pursuant
         to the Collaboration 

<PAGE>

         shall be governed by, to the extent applicable, the provisions of this 
         Agreement and such other provisions as the parties may agree upon in 
         writing from and after the date hereof.  The term of the Collaboration 
         shall commence on the date hereof and end on [          ]*, provided 
         that Cubist shall be entitled to terminate the Collaboration at any 
         time from and after the end of the Minimum Research Period by giving 
         Novalon at least thirty (30) days prior written notice of termination.
    
    (b)  During the Minimum Research Period, Cubist and Novalon shall engage in
         the research activities described in Exhibit A. The respective tasks,
         activities and obligations of the parties during the Minimum Research
         Period are set forth in Exhibit A.
    
    (c)  In the event that Cubist elects not to exercise the Acquisition
         Option, Cubist shall, within [          ]* after the Acquisition
         Option Expiration Date, deliver to Novalon a schedule listing all of
         the research programs then being conducted by Cubist (the Specified
         Research Programs, Exhibit B describes the current research programs
         at Cubist).  During the Remaining Research Period, Novalon and Cubist
         shall (i) continue the research activities described in Exhibit A,
         (ii) engage in such research, screening, target discovery and
         validation, and drug discovery and development activities as Cubist
         shall request, provided that such research, screening, target
         discovery and validation, and drug discovery and development
         activities are related to, or involve, biological targets that are
         within the scope of the Specified Research Programs and (iii) engage
         in such other research activities as the parties may agree upon from
         time to time.  The respective tasks, activities and obligations of the
         parties in connection with any of the matters on which the parties are
         collaborating during the Remaining Research Period shall be mutually
         agreed upon by the parties.
    
2.2 Funding.
    
    (a)  On the first day of each month during the Minimum Research Period and
         on the first day or the first month immediately after the Minimum
         Research Period, Cubist shall reimburse Novalon for any payments made
         by Novalon during the immediately preceding month in respect of (i)
         salary and fringe benefits payable by Novalon to no more than
         [          ]* employed by Novalon and 

________________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                      2

<PAGE>

         engaged solely in activities relating to the Collaboration, and (ii)
         laboratory supplies for use solely in activities relating to the
         Collaboration; provided, however, that the amount of any monthly
         payment that Cubist shall be required to make to Novalon pursuant to
         the foregone provisions of this Section 2.2(a) shall in no event
         exceed [          ]* (it being understood that any expenses incurred
         or payments, made by Novalon in connection with (the Collaboration in
         any month during the Minimum Research Period in excess of
         [          ]* shall be Novalon's sole responsibility and Cubist shall
         have no obligation to reimburse Novalon with respect to any such
         excess).  [          ]*
    
    (b)  On the first day of each month during the Remaining Research Period
         and on the first day of the first month immediately after the
         Remaining Research Period, Cubist shall reimburse Novalon for the
         direct costs incurred by Novalon in connection with activities
         relating to the Collaboration, provided that such costs shall not
         exceed [          ]* (it being understood that any costs incurred by
         Novalon in connection with the Collaboration activities that are in
         excess of [          ]* shall be Novalon's sole responsibility and
         Cubist shall have no obligation to reimburse Novalon with respect to
         any such excess).
    
    2.3  Obligations Following Termination of Collaboration.  Except for
Cubist's obligation, pursuant to Section 2.2(a) above, to make a payment to
Novalon on the first day of the first month immediately after the Remaining
Research Period and except for any other payment obligations of Cubist in
connection with the Collaboration which are agreed upon by the parties in
writing after the date hereof and which by their own terms survive the
Collaboration Termination Date, Cubist shall have no obligations or liabilities
to Novalon pursuant to this Section 2 (including, without limitation, the
obligation to make payments to Novalon in connection with the Collaboration)
from and after the Collaboration Termination Date.
    
    2.4  Exclusivity.
    
    (a)  Until [          ]* Novalon shall not engage in any research
         collaboration, any drug discovery or drug development collaboration,
         partnership or alliance, any licensing transactions or any other kind
         of transaction, involving all or any portion of Novalon's intellectual
         property or know-how or the intellectual property or know-how of any
         Person; provided, however, that the foregoing provisions of this
         Section 2.4(a) shall not preclude Novalon from 

_____________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                   3

<PAGE>

         engaging in the Collaboration.  The restrictions set forth in this
         Section 2.4(a) may be waived, in any instant, by written consent of
         Cubist.
    
    (b)  During the period commencing upon the expiration of the restrictions
         set forth in Section 2.4(a) above and ending on the Collaboration
         Termination Date, Novalon shall not engage in any research or
         screening activities or programs, any research collaborations, any
         drug discovery or drug development collaborations, partnerships or
         alliances, any licensing transactions, or any other kind of
         transactions, in the anti-bacterial and anti-fungal therapeutic area;
         provided, however, that the foregoing provisions of this Section
         2.4(b) shall not preclude Novalon from engaging in (i) the
         Collaboration, or (ii) any research or screening activity or program
         so long as it (A) covers, a finite number of specific biological
         targets for drug discovery and development, none of which have been
         subject to research and development activities pursuant to the
         Collaboration, (B) provides for Novalon to engage in active research,
         discovery and development activities with respect to all of such
         biological targets, (C) provides for the payment to Novalon of
         commercially reasonable consideration and (D) does not preclude
         Novalon from entering into similar arrangements with other parties
         (including Cubist) relating to other targets in the same or any
         different field of pathogen.  The restrictions set forth in this
         Section 2.4(b) may be waived. in any instance, by written consent of
         Cubist.
    
    (c)  Until [          ]* Novalon, subject to any applicable nondisclosure
         agreements between Novalon and third parties, shall discuss and
         coordinate in advance with Cubist any contacts, meetings, discussions
         or negotiations that Novalon proposes to make or in which Novalon
         proposes to participate, to the extent that such proposed contacts,
         meetings, discussions or negotiations relate to any research or
         screening activities or programs, any research collaboration, any drug
         discovery or drug development collaboration, partnership or alliance,
         any licensing transaction, or any other kind of transaction, involving
         all or any portion of Novalon's intellectual property or know-how or
         the intellectual property or know-how of any Person; provided,
         however, that the foregoing provisions of this Section 2.4(c) shall
         not apply to the Collaboration.

___________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                         4

<PAGE>

    
    Section 3.  License.  Subject to all of the terms of this Agreement,
Novalon hereby grants to Cubist a worldwide right and license to use the Novalon
Patent Rights and the Novalon Technology, for purposes of (i) researching,
screening for, discovering or developing anti-bacterial or anti-fungal drug
candidates or antibacterial or anti-fungal drug discovery targets or (ii)
selling, licensing, marketing or otherwise commercializing anti-bacterial or
anti-fungal drugs discovered or developed using any portion of the Novalon
Patent Rights and the Novalon Technology.  The license shall be perpetual and
irrevocable.  The license shall be exclusive with respect to any Novalon Patent
Rights and Novalon Technology that were developed in the course of the research
and development activities provided for in Section 2 hereof.  Cubist shall have
the right to sublicense the license granted to Cubist pursuant to this Section
3.  Except for any payments made or required to be made by Cubist to Novalon
pursuant to Section 2.2 or Section 4.1 in connection with the Collaboration,
Cubist shall not have to pay or otherwise owe to Novalon any consideration of
any kind in connection with the license.
    
    Section 4.     Royalties & Payments.
    
Section 4.1   Royalties.  In consideration for the license granted under this
Agreement, Cubist shall pay royalties (collectively, the Royalties) to Novalon,
within [          ]* after the end of each calendar quarter, in the amount of
[          ]* of all revenue actually received by Cubist from third parties to
the extent that such revenue is directly attributable to (a) Net Sales of
Products for such quarter, (b) drug development milestone payments actually
received by Cubist during such quarter on account of any antibacterial or
antifungal drug candidate that was discovered or developed as a result of the
use of the Novalon Patent Rights or the Novalon Technology, and (c) any
licensing fees actually received by Cubist during such quarter with respect to
any Sublicense.
    
    Section 4.2  Payments.  All payments due under this Agreement shall be paid 
(a) in full without deduction of exchange, collection, taxes or other fees that 
may be imposed by any government and (b) in United States dollars at Novalon's
office in Chapel Hill, North Carolina or at such other place as Novalon may
designate consistent with applicable law.  Currency conversions shall be made by
reference to the prevailing exchange rate for bank transfers from the foreign
currency to U.S. Dollars, as quoted at BankBoston on the last business day of
the calendar quarter immediately preceding the payment due date. If by law,
regulation or fiscal policy of any country, conversion from that country's
currency into U.S. dollars is restricted or forbidden, written notice thereof
shall be given to Novalon and payment of amounts from that country shall be made
through such lawful means as Novalon shall designate, including, without
limitation, deposit of local currency in such recognized banking institution as

________________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                     5

<PAGE>

Novalon shall designate.  When in any country the law or regulation prohibits
both the transmittal and the deposit of royalties as sales in that country,
royalty payments from that country will be suspended for as long as the
prohibition is in effect and, as soon as the prohibition ceases, all royalties
that Cubist or its Sublicensees would have been obligated to pay, but for the
prohibition, will promptly be deposited or transmitted, as (be case may be, to
the extent then allowed.
    
    Section 5.  Intellectual Property.
    
    Section 5.1  Ownership Rights.  Novalon shall own all Technology and
inventions made, developed or discovered solely by its employees or agents or by
the employees or agents of any of its Affiliates, and shall own all Patent
Rights relating to such Technology and inventions.  Cubist shall own all
Technology and inventions made, developed or discovered solely by its employees
or agents or by the employees or agents of any of its Affiliates, and shall own
all Patent Rights relating to such Technology and inventions.  Cubist and
Novalon shall own all Technology and inventions developed jointly by the
employees or agents of Novalon and Cubist or their respective Affiliates, and
shall own all Patent Rights relating to such Technology and inventions.  Subject
to the provisions of Section 5.2 below, Novalon retains all rights to file and
prosecute any and all patent applications included within the Novalon Patent
Rights, and Cubist retains all rights to file and prosecute any and all patent
applications included within the Cubist Patent Rights.
    
    Section 5.2  Patent Filings.  Novalon shall, at its expense and using
patent attorneys selected by it, apply for, seek issuance of and maintain the
Novalon Patent Rights and other patents based on the Novalon Technology in the
United States and in such other countries as are identified in the Patent List
hereto or as Cubist may request in writing; provided that Cubist shall cooperate
with Novalon in such prosecutions filing and maintenance.  Cubist shall be given
at least ten (10) days to advise and comment upon such filings and actions as
are undertaken by Novalon.  Novalon may, in its discretion, decline to apply
for, prosecute or maintain any Novalon Patent Rights in any country, but shall
give timely notice to Cubist of any such determination, whereupon Cubist may
undertake such action, in the name and on behalf of Novalon, at its own expense.
Novalon agrees to cooperate with Cubist as reasonably necessary to permit
Cubist to be able to prosecute or maintain any Novalon Patent Rights in those
countries that Novalon declines to undertake action.  Novalon also agrees to
cooperate with Cubist as reasonably necessary to permit Cubist to be able to
prosecute or maintain any Cubist Patent Rights arising from the Collaboration in
those countries selected by Cubist.
    
                                6

<PAGE>

    Section 6.  Indemnification.
    
    Section 6.1  Indemnification.  Cubist shall at all times defend and hold
Novalon, and its officers, directors, employees, agents and Affiliates
(together, Novalon Indemnitees) harmless from and against all claims, suits,
demands, liability and expenses, including legal expenses and reasonable
attorneys' fees, arising out of (a) the death of or injury to any person or
persons, (b) damage to property, or (c) any other claim, proceeding, demand,
expense and liability of any kind whatsoever resulting from (i) the production,
manufacture, shipping, handling, use (in commerce or otherwise), sale, lease,
consumption, promotion or advertisement of the Products by Cubist or any
Sublicensee or (ii) any obligation or activity of Cubist under this Agreement or
of any Sublicensee under any Sublicense; provided that Cubist shall have no
obligation to indemnify Novalon to the extent of liability attributable to the
Novalon's gross negligence or willful misconduct.
    
    Section 6.2  Indemnification.  Novalon shall at all times defend and hold
Cubist, its officers, directors, employees, agents and Affiliates (together,
Cubist Indemnitees) harmless from and against all claims, suits, demands,
liability and expenses, including legal expenses and reasonable attorneys' fees,
arising out of any claim, proceeding, demand, expense and liability of any kind
whatsoever resulting from (i) the Novalon Patent Rights and the Novalon
Technology or (ii) any obligation or activity of Novalon under this Agreement;
provided that Novalon shall have no obligation to indemnify Cubist to the extent
of liability attributable to the Cubist's gross negligence or willful
misconduct.
    
    Section 7.  Infringement.
    
    Section 7.1  Notice.  Cubist shall notify Novalon promptly in writing of
any alleged Infringement of the Novalon Patent Rights by a third party and shall
provide any available evidence thereof.
    
    Section 7.2 Prosecution By Novalon.  Novalon shall have the right, at its
sole discretion, to prosecute, at its own expense, any alleged infringements of
the Novalon Patent Rights.  Cubist agrees to allow Novalon to include Cubist, at
Novalon's expense, as a party plaintiff in any suit brought with respect to
infringement alleged to have occurred during the Collaboration within the
antibacterial and anti-fungal therapeutic area.  In the event that Novalon takes
the lead counsel role with respect to the commencement or defense of any action,
the total cost shall be borne by and any recovery or damages shall be paid
solely to Novalon.  Cubist shall have the right to participate in any action, at
Cubist's expense, and Novalon agrees to consult with counsel for Cubist on any
significant matters related to the litigation.
  
                                7

<PAGE>
  
    Section 7.3  Prosecution By Cubist.
    
    (a)  Procedure.  If Novalon, within six (6) months after having been
notified of an alleged infringement, shall have been unsuccessful in negotiating
with the alleged infringer to cease and desist such infringement and shall not
have brought an infringement action, or if Novalon shall notify Cubist at any
time prior thereto or its intention not to bring suit against any alleged
infringer, then Cubist shall have the right, but shall not be obligated, to
prosecute at its own expense any such infringement of the Novalon Patent Rights.
Cubist shall be entitled to offset the costs of any such litigation against any
amounts due by Cubist to Novalon under this Agreement.  In such circumstances,
Cubist may use the name of Novalon as the plaintiff if necessary for the
prosecution of the infringement suit.  Notwithstanding anything in the foregoing
to the contrary, no settlement, consent judgment or other voluntarily final
disposition of any such suit may be entered into without the consent of Novalon,
which consent shall not be unreasonably withheld.
    
    (b)  Damages.  In the event that Cubist undertakes litigation pursuant to
Section 7.3(a) for the enforcement of Novalon Patent Rights, any recovery of
damages by Cubist for each suit shall be applied as follows: (a) first, to
Cubist to reimburse Cubist for the expenses of the litigation or suit, including
reasonable attorneys' fees, (b) then, second, to Novalon to reimburse Novalon
for its expenses of the litigation or case, including reasonable attorneys' fees
and any Running Royalty Amounts and licensing Fees withheld by Cubist pursuant
to Section 8.3(a), (c) then, third, an amount equal to the aggregate dollar
amount of sales revenue made by the infringing person would be allocated
[          ]* to Cubist and [          ]* to Novalon and (d) then, the balance
would be allocated [          ]* between Cubist and Novalon.
    
    Section 7.4  Actions Against Cubist or Novalon.
    
    (a)  In the event that an action alleging invalidity or noninfringement of
any of the Novalon Patent Rights shall be brought against Cubist or against
Novalon (whether as an independent action or as a counterclaim of a suit filed
by Cubist pursuant to Section 7.3(a)), Novalon, at its sole option, shall have
the right, within thirty (30) days after the commencement of such action, to
take or regain control of the action at its own expense.  If Novalon shall
determine not to exercise this right, Cubist may take over or remain as lead
counsel for the action at Cubist's sole expense, with any settlement or recovery
subject to the approval provisions of Section 7.3(a) and allocation provisions
of Section 7.3(b).

_____________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                   8

<PAGE>
    
    (b)  In the event that an action alleging any of the Novalon Patent Rights
or Novalon Technology infringes, or resulted from the misappropriation of, any
third party shall be brought against Cubist or against Novalon (whether as an
independent action or as a counterclaim of a suit filed by Novalon pursuant to
Section 7.2), Cubist, at its sole option, shall have the right, within thirty
(30) days after the commencement of such action, to take or regain control of
the action at its own expense.  If Cubist shall determine not to exercise this
right, Novalon may take over or remain as lead counsel for the action at
Novalon's sole expense.
    
    Section 7.5  Cooperation.  In any infringement suit, either party shall be
entitled to request the cooperation and assistance of the other party, at the
requesting party's expense, as may be reasonably necessary for the suit.  Each
party agrees to make available relevant records, papers, information, samples
and specimens, as well as to have its employees testify upon request.
    
    Section 7.6  Third Party Licenses.  If Cubist and Novalon mutually
determine that sales of Products or use of the Novalon Patent Rights or Novalon
Technology would be impractical or impossible without obtaining a
royalty-bearing license from a third party, Cubist may enter into a license with
such third party, and Cubist shall be permitted to offset royalties or any other
amounts paid thereunder as a deduction within the calculation of Royalties,
unless the third party is an Affiliate of Cubist; provided, however, that Cubist
shall be entitled to offset no more than [          ]* of the Royalties
otherwise payable to Novalon.
    
    Section 8.  Dispute Resolution.
    
    Section 8.1  Scope and Enforcement.  Any controversy or claim arising
between the parties in connection with this Agreement shall be resolved by
binding arbitration in accordance with the terms and conditions of this Section
9; provided, that actions by either party seeking equitable or declaratory
relief may be brought in court pursuant to Section 9.  This agreement to
arbitrate shall continue in full force and effect despite the expiration,
rescission or termination of this Agreement.  All arbitration shall be
undertaken in accordance with the federal policy favoring arbitration, as set
forth in the Federal Arbitration Act, and the decision of the arbitrator(s)
shall be enforceable in any court of competent jurisdiction.  The parties
knowingly and voluntarily waive their rights to have their dispute tried and
adjudicated by a judge and jury except as expressly provided herein.  The
arbitrator(s) shall apply the law of the Commonwealth of Massachusetts and the
arbitration shall be held in Boston, Massachusetts or in such other city as the
parties may mutually agree.

_______________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.
    
                                    9
<PAGE>

    Section 8.2  Procedure.  Any party may demand arbitration by sending
written notice to the other party.  The arbitration and the selection of the
arbitrator(s) shall he conducted in accordance with such rules as may be agreed
upon by the parties, or, failing agreement within thirty (30) days after
arbitration is demanded, under the Commercial Arbitration Rules of the American
Arbitration Association (AAA), as such rules may be modified by this Agreement. 
If the parties are unable to agree upon a single arbitrator within sixty (60)
days, three (3) arbitrators shall be used, one selected by each party within ten
(10) days after the conclusion of the sixty (60) day period and a third selected
by the first two within ten (10) days thereafter.  The arbitrator or arbitrators
shall be accredited by the AAA and shall be individuals with relevant business
experience in structuring and negotiating biotechnology research collaborations;
provided, however, that the parties may mutually agree in writing to waive
either UT both of the foregoing requirements.  Unless the parties agree
otherwise, they shall be limited in their discovery to directly relevant
documents- Responses or objections to a document request shall be served twenty
(20) days after receipt of the request.  The arbitrator(s) shall resolve any
discovery disputes.
    
    Section 8.3  Awards.  The arbitrator(s) shall have the authority to award
actual money damages (with interest on unpaid amounts from the date due),
specific performance, and temporary injunctive relief, but the arbitrator(s)
shall not have the authority to award exemplary or punitive damages, and the
parties expressly waive any claimed right to such damages.  The arbitration
shall be of each party's individual claims only, and no claim of any other party
shall be subject to arbitration in such proceeding.  The parties are unable to
agree on the appointment of a single arbitrator, each party shall bear the cost
of the arbitrator appointed by such party and the cost of the third arbitrator
shall be shared equally by both parties.  Each party shall be responsible for
all costs incurred by it in preparing for and participating in the arbitration. 
Except as otherwise required by law, the parties and the arbitrator(s) agree to
maintain as confidential all information or documents obtained during the
arbitration process, including the resolution of the dispute.
    
    Section 9.  General Provisions.
    
    Section 9.1  Remedies.  The parties acknowledge and agree that, in the
event of a breach or a threatened breach by either party of' Section 9.4 hereof,
the other party may suffer irreparable damage for which it will have no adequate
remedy at law and, accordingly, shall be entitled to injunctive and other
equitable remedies to prevent or restrain such breach or threatened breach,
without the necessity of posting any bond or surety, in addition to any other
remedy it might have at law or at equity.
    
                                    10

<PAGE>

    Section 9.2  Governing Law.  This Agreement shall be governed and construed
in accordance with the internal laws of' the State of Delaware, without regard
to its rules concerning conflicts of laws.
    
    Section 9.3  Exclusive Venue; Consent to Jurisdiction.  Any action, suit or
other proceeding pursuant to, arising under, or touching or concerning this
Agreement or the transactions contemplated hereby (other than those for which
arbitration pursuant to Section 8 is the sale forum) shall be brought
exclusively in any court of competent jurisdiction in the State of' Delaware. 
The parties agree to take any and all necessary or appropriate action to submit
to the exclusive jurisdiction of any such court.  In any such action, suit or
proceeding, the successful or prevailing party shall be entitled to recover its
reasonable attorneys' fees and other costs incurred in connection with that
action, suit or proceeding, in addition to any other relief to which such party
may be entitled.
    
    Section 9.4  Confidentiality.  It is contemplated that in the course of the
performance of this Agreement each party may, from time to time, disclose
Confidential Information to the other.  Each party agrees to take all reasonable
steps to prevent disclosure of Confidential Information; provided that no
provision of this Agreement shall be construed to preclude such disclosure of
Confidential Information as may be necessary or appropriate to obtain from any
governmental agency any necessary approval or license or to obtain patents that
are to be included in Novalon Patent Rights.
    
    Section 9.5  Amendment and Waiver.  No provision of or right under this
Agreement shall be deemed to have been waived by any act or acquiescence on the
part of either party, its agents or employees, but only by an instrument in
writing signed by an authority officer of each party.  No waiver by either party
of any breach of this Agreement by the other party shall be effective as to any
other breach, whether of the same or any other term or condition and whether
occurring before or after the date of such waiver.
    
    Section 9.6  Independent Contractors.  Each party represents that it is
acting on its own behalf as an independent contractor and is not acting as an
agent for or on behalf of any third party.  This Agreement and the relations
hereby established by and between Cubist and Novalon do not constitute a
partnership, joint venture, agency or contract of employment between them.
    
    Section 9.7  Assignment.  Neither party may assign its rights or
obligations hereunder without the prior written consent of the other party,
which consent shall not be unreasonably withheld in the case of any assignment
pursuant to a merger, consolidation or sale of substantially all of the assets
or stock of a party, provided that (a) nothing contained in this Section 9.7
shall prohibit sublicensing, and (b) the proposed assignee under this Section
9.7 agrees in writing to assume all of the obligations of such party under this
Agreement.

                                  11

<PAGE>
    
    Section 9.8  Successors and Assigns.  This Agreement shall bind and inure
to the benefit of the parties hereto and their respective successors and
permitted assigns.
    
    Section 9.9  Use of Names.  Neither party shall use the name of the other
party or any officer, employee or consultant of the other party or any
adaptation thereof in any advertising, promotional or sales literature,
publicity or In any document employed to obtain funds or financing without the
prior written approval of the party or individual whose name is to be used;
provided that Cubist may state that it is licensed by Novalon under the Novalon
Patent Rights and the Novalon Technology and may make such disclosure as is
required by the Securities Act of 1933, the Securities Exchange Act of 1934 and
the rules and regulations promulgated thereunder.
    
    Section 9.10  Notices.  All communications hereunder shall be in writing
and shall he deemed to have been duly given upon receipt by the addressee at the
addresses set forth below or such other address as either party may specify by
notice sent in accordance with this Section:
    
    If to Cubist:
    
    Cubist Pharmaceuticals, Inc.
    24 Emily Street
    Cambridge, MA 02139
    Boston, MA 02118
    Attention:  Scott M. Rocklage, Ph.D.
    Telecopier: (617) 576-0232
    
    With a copy to,
    
    Bingham Dana LLP
    150 Federal Street
    Boston, MA  02110
    Attention:  Julio E. Vega, Esquire
    Telecopier: (617) 951-8736
    
    (i)  If to Novalon:
    
    Novalon Pharmaceutical Corporation
    214 West Cameron Avenue, Suite B
    Chapel Hill, N.C. 27516
    Attention:     Dana M. Fowlkes, NM, Ph.D.
    Telecopier:    (919) 968-9255
    
                                          12

<PAGE>

    with a copy to:
    
    Jenner & Block
    12th Floor
    601 Thirteenth Street, N. W.
    Washington, D.C. 20005
    Attention:     D. Joe Smith, Esquire
    Telecopier:    (203) 639-6066
    
    Section 9.11  Severability.  In the event any provision of this Agreement
shall for any reason be held to be invalid, illegal or unenforceable in any
respect, such invalidity, illegality or unenforceability shall not affect any
other term or provision hereof.  The parties agree that they will negotiate in
good faith or will permit a court or arbitrator to replace any provision hereof
so held invalid, illegal or unenforceable with a valid provision which is as
similar as possible in substance to the invalid, illegal or unenforceable
provision.
    
    Section 9.12  Conflict or Inconsistency.  In the event of any conflict or
inconsistency between the terms and conditions hereof and any terms or
conditions set forth in any purchase order or other document relating to the
transactions contemplated by this Agreement, the terms and conditions set forth
in this Agreement shall prevail.
    
    Section 9.13  Captions.  Captions or the sections and subsections of this
Agreement are for reference purposes only and do not constitute terms or
conditions of this Agreement and shall not limit or affect the terms and
conditions hereof.
    
    Section 9.14  Word Meanings.  Words such as herein, hereinafter, hereof and
hereunder refer to this Agreement as a whole and not merely to a section or
paragraph in which such words appear, unless the context otherwise requires. 
The singular shall include the plural, and each masculine, feminine and neuter
reference shall include and refer also to the others, unless the context
otherwise requires.
    
    Section 9.15  Entire Agreement.  This Agreement contains the entire
understanding of the parties hereto with respect to the transactions and matters
contemplated hereby, supersedes all prior agreements and understandings relating
to the subject matter hereof (including, without limitation, Section 7 of' the
Stock Purchase Agreement), and no representations, inducements, promises or
agreements, whether oral or otherwise, between such parties not contained herein
or incorporated herein by reference shall be of any force or effect.
    
    Section 9.16  Acquisition.  This Agreement shall immediately terminate upon
consummation of the Acquisition.

                                 13

<PAGE>
    
    Section 9.17  Rules of Construction.  The parties agree that they have
participated equally in the formation of this Agreement and that the language
and terms of this Agreement shall not be presumptively construed against either
of them.
    
    Section 9.18  Counterparts.  This Agreement may be executed in multiple
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.  In making proof of this
Agreement, it shall not be necessary to produce or account for more than one
such counterpart.
    
    IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers, and have duly delivered
and executed this Agreement under seal as of the date first set forth above.
    
CUBIST PHARMACEUTICALS, INC.             NOVALON PHARMACEUTICAL CORPORATION


/s/ Mark Carthy for Scott M. Rocklage    /s/ Dana M. Fowlkes           
- -------------------------------------    ------------------------------
By:      Scott M. Rocklage               By:       Dana M. Fowlkes
Title:   President and Chief             Title:    President and Chief 
         Executive Officer                         Executive Officer
    

                                  14

<PAGE>
    
                                                                      Schedule I
                                                                     Definitions
    
    
    When used as capitalized terms in the Research Collaboration and License
Agreement to which this Schedule I is attached, the following terms shall have
the respective meanings set forth below:
    
    AAA has the meaning specified in Section 10.
    
    Acquisition means the acquisition by Cubist of all of the outstanding
shares of Novalon's capital stock.
    
    Acquisition Option means Cubists option to acquire all of the outstanding
shares of Novalon's capital stock pursuant to that certain Acquisition Option
Agreement, dated May 5, 1997.
    
    Acquisition Option Expiration Date means the earlier of (i) [          ]*
or (ii) such date as the Acquisition Option terminates pursuant to that certain
Acquisition Option Agreement, dated May 5, 1997.
    
    Affiliate means with respect to any person or Entity, any other person or
Entity that controls, is controlled by or is under common control with the
specified person or Entity.  As used in this definition, the term control means
the possession, directly or indirectly, of the power to direct or cause the
direction of the management and policies of an Entity, whether through ownership
of voting securities, by contract or otherwise.
    
    Agreement means the research collaboration and license agreement to which
this Schedule I is attached, together with all Schedules and Exhibits annexed
thereto, as the same shall be modified and in effect from time to time.
    
    Collaboration means the collaboration and other research activities engaged
in by Cubist and Novalon pursuant to Section 2 of this Agreement.
    
    Collaboration Termination Date means the earlier of (i) [          ]* or
(ii) the effective date of termination of the Collaboration pursuant to the
provision, of Section 2.1(a) of this Agreement.
    
    Confidential Information means all information and data provided by the
parties to each other hereunder in written or other tangible medium and

_____________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                    1

<PAGE>

marked as confidential, or if disclosed orally, confirmed in writing within
thirty (30) days after disclosure, except any portion thereof which:
    
    (a)  is known to the receiving party, as evidenced by the receiving party's
written record, before receipt thereof under this Agreement;
    
    (b)  is disclosed to the receiving party by a third person who has a right
to make such disclosure; or
    
    (c)  is or becomes generally known in the trade through no fault of the
receiving party.
    
    Cubist Indemnitee has the meaning specified in Section 6.2.
    
    Cubist Patent Rights means Patent Rights which are owned by Cubist or any
of its Affiliates or which Cubist or any of its Affiliates has the right to
license or sublicense to persons or Entities.
    
    Cubist Technology means Technology which is owned by Cubist or any of its
Affiliates or which Cubist Or any of its Affiliates has the right to license or
sublicense to persons or Entities.
    
    Effective Date has the meaning set forth in the preamble to this Agreement.
    
    Entity means any corporation, association, partnership (general or
limited), joint venture, trust, estate, limited liability company, limited
liability partnership or other legal entity or organization.
    
    Exhibit A means Exhibit A to this Agreement, as said Exhibit A may be
amended and in effect from time to time.
    
    Minimum Research Period means the period commencing on the Effective Date
and ending on the later of [          ]* or [          ]* after the Acquisition
Option Expiration Date.
    
    Net Sales means all gross amounts billed to any person or Entity (other
than an Affiliate of such person or Entity) at the earliest of invoice, shipment
or payment in respect of Products, less the sum of the following amounts:
    
    (a)  sales and use taxes, tariffs, duties and the like imposed directly and
         with reference to particular sales or leases; plus
    
    (b)  outbound shipping prepaid or actually allowed; plus
    
_____________________

*   Confidential Treatment requested:  material has been omitted and filed
    separately with the Commission.

                                          2

<PAGE>

    (c)  amounts allowed on credits or returns; plus
    
    (d)  discounts allowed in amounts customary in the trade.
    
    Novalon Indemnitee has the meaning specified in Section 6.1.
    
    Novalon Patent Rights means Patent Rights as they relate to Cubist's
Specified Research Program as described in 2.1 c. which are owned by Novalon or
any of its Affiliates or which Novalon or any of its Affiliates has the right to
license or sublicense to persons or Entities.  Without limiting the generality
of the foregoing, the term Novalon Patent Rights shall include all Patent Rights
of Novalon as they relate to Cubist's Specified Research Program as described in
2.1 c. with respect to the patents and patent applications listed in the Patent
List.
    
    Novalon Technology means Technology as it relates to Cubist's Specified
Research Program as described in 2.1 c which is owned by Novalon or any of its
Affiliates or which Novalon or any of its Affiliates has the right to license or
sublicense to persons or Entities.
    
    Patent List means Exhibit C annexed hereto as they may be amended and in
effect from time to time.
    
    Patent Rights means all rights related to any of the following:
    
    (a)  all United States and foreign patent applications and provisional
         applications;
    
    (b)  all patents issued with respect to all United States and Foreign
         patent applications and provisional applications and with respect to
         divisionals and continuations of these applications;
    
    (c)  claims of United States and foreign continuation-in-part applications,
         and of resulting patents, that are directed to subject matter
         described in the patent applications described in clause (a) above;
    
    (d)  claims of all foreign patent applications and of the resulting patents
         that are directed to the subject matter described in the United States
         patents and patent applications described in clauses (a), (b) or (c)
         hereof, and
    
    (e)  any reissues of United States patents described in (a), (b) or (c)
         hereof 
    
                                    3

<PAGE>

    Products means any anti-bacterial or anti-fungal drug that was discovered
or developed as a result of the use of the Novalon Patent Rights or the Novalon
Technology.
    
    Remaining Research Period means the period commencing at the end of the
Minimum Research Period and ending on the Collaboration Termination Date.
    
    Royalties has the meaning set forth in Section 4.1.
    
    Sublicense means any license or right granted by Cubist to any person or
Entity (and any such license or right granted by such person or Entity to any
other person or Entity) to use the Novalon Patent Rights or the Novalon
Technology to the same extent as Cubist is entitled pursuant to this Agreement,
together with all agreements between the parties related thereto.
    
    Sublicensor means any person or Entity (including without limitation,
Cubist) who grants a Sublicense.
    
    Sublicensee Any person or Entity to whom a Sublicense is granted.
    
    Technology means all proprietary developments, ideas, designs, concepts,
techniques, processes, inventions, cell lines, discoveries, improvements,
research results, toxicology data, assays, preclinical data, mask Works,
manufacturing processes, clinical results, regulatory submissions, approvals and
licenses, product licenses, papers, photographs, computer programs and
databases, manuals, prototypes, models, plans, drawings, formulations,
specifications, methods, shop-practices, formulas, supplier lists, engineering
and manufacturing information costing information, accounting and financial
data, and strategic plans (without regard to whether they are Confidential
Information, patentable or copyrightable) of a person but that are not included
within Patent Rights, including without limitation,
    
    (a)  inventions that are the subject of patent applications for which
         patents do not issue or are invalidated (from and after the date a
         final determination is made from which no further appeal may be
         taken);
    
    (b)  inventions that directly relate to the Patent Rights but do not
         infringe a valid, unexpired or pending claim contained in the Patent
         Rights;
    
    (c)  from and after the abandonment of a claim of a patent contained in the
         Patent Rights or after the removal of a patent from the list of Patent
         Rights, inventions formerly covered thereby; and

                                        4

<PAGE>
    
    (d)  in countries where the parties hereto have agreed that obtaining
         patent protection is not economically viable or advisable, all
         inventions that directly relate to the Patent Rights.







                                    5    

<PAGE>

                                                                 Exhibit 10.2
                                                                 CONFIDENTIAL

        Addendum to the Research Collaboration and License Agreement
                                           
ADDENDUM to the RESEARCH COLLABORATION AND LICENSE AGREEMENT, dated as of May 
5, 1997 (the Effective Date), by and between Cubist Pharmaceuticals, Inc., a 
Delaware corporation (Cubist) and Novalon Pharmaceutical Corporation, a 
Delaware corporation (Novalon).

    WHEREAS, Cubist and Novalon have entered into a Series B Convertible 
Preferred Stock Purchase Agreement, dated as of May 5, 1997 (the Stock 
Purchase Agreement), pursuant to which Cubist purchased shares of the Series 
B Convertible Preferred Stock of Novalon and agreed to engage in a 
collaborative "BioKeys" research project and the "ElectroScreen" project with 
Novalon.

    WHEREAS, pursuant to Section 7.6 of the Stock Purchase Agreement, Cubist 
and Novalon negotiated and entered into a Research Collaboration and License 
Agreement, dated May 5, 1997, to set forth the rights and obligations of the 
parties with respect to the research projects.

    WHEREAS, Cubist and Novalon wish to amend said Research Collaboration and
License Agreement with this Addendum; and

    WHEREAS, Cubist and Novalon wish to maintain in full force and effect all 
provisions of the Research Collaboration and License Agreement except for 
those provisions that are amended herein.

    NOW, THEREFORE, in consideration with the mutual promises and agreements 
set forth herein, and for other good and valuable consideration, the receipt 
and sufficiency of which are hereby acknowledged, Cubist and Novalon hereby 
agree as follows:

    Section 1.  Definitions.  Capitalized terms used in this Agreement shall 
have the meanings set forth in the Research Collaboration and License 
Agreement, dated May 5, 1997, except for the following terms which will have 
the meaning as set forth below:

    Collaboration Targets List means a schedule, as amended from time to 
time, listing Targets subject to the provisions of this Section 2 and Section 
3 that Cubist has an intention to screen and for which Novalon will make its 
best efforts to develop assays.

<PAGE>

    Cubist Patent Rights means Patent Rights which are owned by Cubist or any 
of its Affiliates at any time and from time to time or which Cubist or any of 
its Affiliates has the right at any time and from time to time to license or 
sublicense to persons or Entities.  The term Cubist Patent Rights shall not 
include any Patent Rights that are included within Joint Patent Rights.

    Cubist Technology means Technology which is owned by Cubist or any of its 
Affiliates at any time and from time to time or which Cubist or any of its 
Affiliates has the right at any time and from time to time to license or 
sublicense to persons or Entities.  The term Cubist Technology shall not 
include any Technology that is included within the Joint Technology.

    Joint Patent Rights means Patent Rights that are jointly owned by Cubist 
and Novalon and that relate to Joint Technology.

    Joint Technology means Technology that is developed jointly by the 
employee, or agents of Novalon and Cubist or their respective Affiliates 
during the term of the Collaboration.

    Novalon Patent Rights means Patent Rights which are owned by Novalon or 
any of its Affiliates at any time and from time to time or which Novalon or 
any of its Affiliates has the right at any time and from time to time to 
license or sublicense to persons or Entities.  Without limiting the 
generality of the foregoing, the term Novalon Patent Rights shall include all 
Patent Rights of Novalon with respect to the patents and patent applications 
listed in the Patent List.  The term Novalon Patent Rights shall not include 
any Patent Rights that are included within the Joint Patent Rights.

    Novalon Technology means Technology which is owned by Novalon or any of 
its Affiliates at any time and from time to time or which Novalon or any of 
its Affiliates has the right at any time and from time to time to license or 
sublicense to persons or Entities.  The term Novalon Technology shall not 
include any Technology that is included within the Joint Technology.

    RCLA means the Research Collaboration and License Agreement.

                                       -2-
<PAGE>

    Research Collaboration and License Agreement means that certain Research 
Collaboration and License Agreement, dated May 5, 1997, by and between Cubist 
Pharmaceuticals, Inc. and Novalon Pharmaceutical Corporation, as amended from 
time to time.

    Sublicense means any license or right granted by Cubist to any person or 
Entity (and any such license or right granted by such person or Entity to any 
other person or Entity) to use the Novalon Patent Rights, the Novalon 
Technology, the Joint Patent Rights, and the Joint Technology to the same 
extent as Cubist is entitled pursuant to this Agreement, together with all 
agreements between the parties related thereto.

    Target means a macromolecule, including but not limited to the amino acid 
sequence (if known) or nucleic acid sequence (if known) of said macromolecule.

    Target Activation Date means the date Cubist lists a Target on the 
Collaboration Targets List, as described in Section 2 herein.

    Target Exclusivity Fee means a fee of [          ]* per Target per year 
as described in Section 3 herein to maintain Cubist's exclusive license 
and/or collaborative relationship for the use of Novalon's technology to 
research a Target.

    Section 2  Research Collaboration

    The following Section 2-1 (c) supersedes and replaces Section 2.1 (c) of 
the RCLA.

    Section 2.1  Collaboration

    (c)  In the event that Cubist elects not to exercise the Acquisition
         Option, Cubist shall, within [          ]* after the Acquisition
         Option Expiration Date, deliver to Novalon a schedule listing not more
         than ten (10) Targets that comprise the Collaboration Targets List. 
         The aforementioned Targets will be the focus of the Minimum Research
         Period.  Within 

- -------------------
*   Confidential Treatment requested:  material has been omitted and filed 
    separately with the Commission.

                                       -3-
<PAGE>


         [          ]* after the end of the Minimum Research Period and in
         the event that the Collaboration continues to be in effect pursuant 
         to the RCLA, Cubist and Novalon will mutually agree
         upon the number of Targets that shall be added to the Collaboration
         Targets List to be worked on in the Collaboration during the Remaining
         Research Period in addition to those Targets that comprised the
         Collaboration Targets List during the Minimum Research Period,
         provided that said Targets shall not have been previously listed on
         the Collaboration Targets List and are not the subject of a research
         agreement with any third party that would preclude Novalon or Cubist
         from collaborating to research said Targets with each other.  The
         parties may modify the Collaboration Targets List at any time upon
         mutual agreement.  Novalon shall have the right to remove any Target
         from the Collaboration Targets List at any time after the last day of
         the eighteenth month following the Target's respective Target
         Activation Date by giving Cubist thirty (30) days written notice,
         provided, however, that the foregoing shall not give Novalon the right
         to remove a Target if Cubist has paid the Target Exclusivity Fee for
         such Target for the current period pursuant to Section 3 hereof During
         the Remaining Research Period, Novalon and Cubist shall (i) continue
         the research activities described in Exhibit A, (ii) engage in such
         research, screening, target discovery and validation, and drug
         discovery and development activities as Cubist shall request, provided
         that such research, screening, target discovery and validation, and
         drug discovery and development activities arc related to, or involve,
         Targets that arc listed on the Collaboration Targets List and (iii)
         engage in such other research activities as the parties may agree upon
         from time to time.  The respective tasks, activities and obligations
         of the parties in connection with any of' the matters on which the
         parties are collaborating during the Remaining Research Period shall
         be mutually agreed upon by the parties.

    The following Section 2.4 (b) supersedes and replaces Section 2.4 (b) of
the RCLA.


- -------------------
*   Confidential Treatment requested:  material has been omitted and filed 
    separately with the Commission.

                                       -4-
<PAGE>


    Section 2.4  Exclusivity.

         (b)  During the period commencing upon the [          ]*, Novalon
         shall not engage in any research or screening activities or programs,
         any research collaborations, any drug discovery or drug development
         collaborations, partnerships or alliances, any licensing transactions,
         or any other kind of transactions in the antibacterial and anti-fungal
         therapeutic area; provided, however, that the foregoing provisions of
         this Section 2.4 (b) shall not preclude Novalon from engaging in (i)
         the Collaboration, or (ii) any research or screening activity or
         program so tong as it (A) covers a finite number of specific
         biological Targets for drug discovery and development, (B) provides
         for Novalon to engage in active research, discovery and development
         activities with respect to all of such biological Targets, (C)
         provides for the payment to Novalon commercially reasonable
         consideration, (D) does not involve Targets that are listed on the
         Collaboration Targets List at the time the research or screening
         activity or program is entered into, and (E) does not preclude Novalon
         from entering into similar arrangements with other parties (including
         Cubist) relating to other Targets in the same or any different field
         or pathogen.  The restrictions set forth in this Section 2.4 (b) may
         be waived, in any instance, by written consent of Cubist.

    Section 3.  License.

    The following Section 3 supersedes and replaces Section 3 of the RCLA.

    Section 3.  License.  Subject to all of the terms and conditions of this
Agreement, Novalon hereby grants to Cubist an exclusive, worldwide right and
license to use the Novalon Patent Rights, the Novalon Technology, the Joint
Patent Rights, and the Joint Technology, for purposes of (i) researching,
screening for, discovering or developing anti-bacterial or anti-fungal drug
candidates or anti-bacterial or anti-fungal drug discovery targets derived from
research on Targets listed on the Collaboration Targets List or (ii) selling,
licensing, marketing or otherwise commercializing antibacterial or anti-fungal
drugs discovered Or developed using any portion of the Novalon 


- -------------------
*   Confidential Treatment requested:  material has been omitted and filed 
    separately with the Commission.


                                       -5-
<PAGE>

Patent Rights, the Novalon Technology, the Joint Patent Rights, and Joint 
Technology in research on Targets listed on the- Collaboration Targets List, 
The license granted hereunder with respect to each Target listed on the 
Collaboration Targets List shall be for a term of eighteen (18) months' 
following the Target Activation Date for such Target, provided that Cubist 
may extend the term of the license by one year for each such Target by the 
payment to Novalon of' a Target Exclusivity Fee of [          ]* on or before 
the first day of the nineteenth month following the Target Activation Date 
for such Target.  Cubist may extend the license for such Target for 
successive one-year terms by the payment to Novalon of an additional Target 
Exclusivity Fee of [          ]* on each anniversary date of the due date of 
the first payment of the Target Exclusivity Fee for such Target.  In the 
event that Cubist fails to make any such Target Exclusivity Fee payment, 
Novalon may, upon giving Cubist thirty (30) days written notice and upon 
Cubist's failing to make such Target Exclusivity Fee payment, remove such 
Target from the Collaboration Targets List and revoke the license granted 
hereunder with respect to such Target.  Upon the revocation of a license with 
respect to any such Target, Cubist shall not thereafter have the right to 
reinstate such license unless Novalon shall consent thereto in writing. 
Except for the foregoing, Cubist's license shall be perpetual and 
irrevocable. Cubist shall have the right to sublicense the license granted to 
Cubist pursuant to this Section 3. Except for any payments made or required 
to be made by Cubist to Novalon pursuant to Section 2.2, Section 3 or Section 
4.1 of the RCLA and in connection with the Collaboration, Cubist shall not 
have to pay or otherwise owe to Novalon any consideration of any kind in 
connection with the license.

    Section 4.  Confidentiality and Use of Names.

    The following Section 9.4 supersedes and replaces Section 9.4 of the RCLA.

    Section 9.4  Confidentiality.  It is contemplated that in the course of 
the performance of this Agreement each party may, from time to time, disclose 
Confidential Information to the other.  Each party agrees to take all 
reasonable steps to prevent disclosure of Confidential Information; 

- -------------------
*   Confidential Treatment requested:  material has been omitted and filed 
    separately with the Commission.

                                       -6-
<PAGE>

provided that no provision of this Agreement shall be construed to preclude 
such disclosure of Confidential Information as may be necessary or 
appropriate to obtain from any governmental agency any necessary approval or 
license or to obtain patents that are to be included in Novalon Patent Rights 
and Joint Patent Rights.

    The following Section 9.9 supersedes and replaces Section 9.9 of the RCLA.

    Section 9.9 Use of Names.  Neither party shall use the name of the other 
party or any officer, employee or consultant of the other party or any 
adaptation thereof in any advertising, promotional or sales literature, 
publicity or in any document employed to obtain funds or financing without 
the prior written approval of the party or individual whose name is to be 
used; provided that Cubist my state that it is licensed by Novalon under the 
Novalon Patent Rights, the Novalon Technology, the Joint Patent Rights, and 
the Joint Technology and may make such disclosure as is required by the 
Securities Act of 1933, the Securities Exchange Act of 1934 and the rules and 
regulations promulgated thereunder.

    Section 5.  Joint Rights.

    The following Section 10 is hereby added to the RCLA.

    Section 10.  Joint Rights.

    Section 10.1  Ownership Rights.  Cubist and Novalon shall jointly and 
equally own all Technology and inventions developed jointly by the employees 
or agents of Novalon and Cubist or their respective Affiliates, and shall 
jointly and equally own all Patent Rights relating to such Technology and 
inventions. Subject to the provisions of Section 5.2 of the RCLA, Novalon 
retains all rights to file and prosecute any and all patent applications 
included within the Novalon Patent Rights, and Cubist retains all rights to 
file and prosecute any and all patent applications included within the Cubist 
Patent Rights.

    Section 10.2  Patent Filings.  Novalon shall, using patent attorneys 
selected by Novalon, apply for, seek issuance of and maintain the Joint 
Patent Rights and other patents based on the Joint Technology in the United 
States and in such other countries as Novalon identifies or as Cubist may 
request in writing, provided that Cubist shall cooperate with Novalon in such 
prosecution, filing and maintenance.  Cubist shall be given at least 
twenty-five (25) days to advise and comment upon such 


                                       -7-
<PAGE>

filings and actions as are undertaken by Novalon. Costs relating to patent 
filings shall be shared equally between Novalon and Cubist.  Cubist may, in 
its discretion, decline to participate in the prosecution and maintenance of 
any Joint Patent Rights in any country, provided, however, that in doing so, 
Cubist shall convey all of its ownership interests in such Joint Patent 
Rights to Novalon and Novalon shall bear all subsequent patent costs for such 
Joint Patent Rights.  Novalon may, in its discretion, decline to apply for, 
prosecute or maintain any Joint Patent Rights in any country, but shall give 
timely notice to Cubist of any such determination, provided, however, that in 
doing so, Novalon shall convey all of its ownership interests in such Joint 
Patent Rights to Cubist and Cubist shall bear all subsequent patent costs for 
such Joint Patent Rights.  Novalon agrees to cooperate with Cubist as 
reasonably necessary to permit Cubist to be able to prosecute or maintain any 
Joint Patent Rights in those countries where Novalon declines to undertake 
action.

    Section 6.  Infringement of Joint Rights.

    The following Section 11 is hereby added to the RCLA.

    Section 11.  Infringement of Joint Rights.

    Section 11.1  Notice.  Cubist shall notify Novalon promptly in writing 
upon becoming aware of any alleged infringement of the Joint Patent Rights by 
a third party and shall provide any available evidence thereof, Novalon shall 
notify Cubist promptly in writing upon becoming aware of any alleged 
infringement of the Joint Patent Rights by a third party and shall provide 
any available evidence thereof.

    Section 11.2  Prosecution By Novalon Related to Joint Rights.  Novalon 
shall have the right, at its sole discretion, to prosecute any alleged 
infringements of the Joint Patent Rights.  Cubist agrees to allow Novalon to 
include Cubist, at Novalon's own expense, as a party plaintiff in any suit 
brought with respect to infringement.  In the event that Novalon takes the 
lead role with respect to the commencement or defense of any action, the 
total costs shall be borne by Novalon, and any recovery or damages shall be 
applied as follows: (a) first, to Novalon to reimburse Novalon for the 
expenses of the litigation or suit, including reasonable attorneys' fees and 
(b) then, the balance would be allocated equally between Cubist and Novalon.  
Cubist shall have the right to participate in any action, and Novalon agrees 
to consult with counsel for Cubist on any significant matters related to the 
litigation.


                                       -8-
<PAGE>

    Section 11.3  Prosecution By Cubist Related to Joint Rights.

    (a)  Procedure.  If Novalon, within six (6) months after having been 
notified of an alleged infringement, shall have been unsuccessful in 
negotiating with the alleged infringer to cease and desist such infringement 
and shall not have brought an infringement action, or if Novalon shall notify 
Cubist at any time prior thereto of its intention not to bring suit against 
any alleged infringer, then Cubist shall have the right, but shall not be 
obligated, to prosecute at its own expense any such infringement of the Joint 
Patent Rights. Cubist shall be entitled to offset the costs of any such 
litigation against any amounts due by Cubist to Novalon under this Agreement. 
 In such circumstances, Cubist may use the name of Novalon as the plaintiff 
if necessary for the prosecution of the infringement suit.  Notwithstanding 
anything in the foregoing to the contrary, no settlement, consent judgment or 
other voluntarily final disposition of any such suit may be entered into 
without the consent of Novalon, which consent shall not be unreasonably 
withheld.

    (b)  Damages.  In the event that Cubist undertakes litigation pursuant to 
Section 11.3 (a) for the enforcement of Joint Patent Rights, any recovery of 
damages by Cubist or Novalon, as the case may be, for each suit shall be 
applied as follows: (a) first, to Cubist to reimburse Cubist for the expenses 
of the litigation or suit, including reasonable attorneys' fees, (b) then, 
second, to Novalon to reimburse Novalon for its expenses of the litigation or 
case, including reasonable attorneys' fees [          ]* and (c) then the 
balance would be allocated [          ]* between Cubist and Novalon.

    Section 11.4 Actions Against Cubist or Novalon Related to Joint Rights.

    (a)  In the event that an action alleging invalidity or noninfringement 
of any of the Joint Patent Rights shall be brought against Cubist or against 
Novalon (whether as an independent action or as a counterclaim of a suit 
filed by either Novalon pursuant to Section 11.2 or Cubist pursuant to 
Section 11.3(a)), Novalon, at its sole option, shall have the right, within 
thirty (30) days after the commencement of such action, to take or regain 
control of the action at its own expense.  If Novalon shall determine not to 
exercise this right, Cubist may take over or remain as 


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*   Confidential Treatment requested:  material has been omitted and filed 
    separately with the Commission.

                                       -9-
<PAGE>


lead counsel for the action at Cubist's sole expense, with any settlement or 
recovery subject to the approval provisions of Section 11.3(a) and allocation 
provisions or Section 11.3(b).

    (b)  In the event that an action alleging any of the Joint Patent Rights 
or Joint Technology infringes, or resulted from the misappropriation of, any 
third party shall be brought against Cubist or against Novalon (whether as an 
independent action or as a counterclaim of a suit filed by either Novalon 
pursuant to Section 11.2 or Cubist. pursuant to Section 11.3 (a)), Novalon, 
at its sole option, shall have the right, within thirty (30) days after the 
commencement of such action, to take or regain control of the action at its 
own expense.  If Novalon shall determine not to exercise this right, Cubist 
may take over or remain as lead counsel for the action at Cubist's sole 
expense.

                                       -10-
<PAGE>

    IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be 
executed by their respective duly authorized officers, and have duly 
delivered and executed this Agreement under seal as of the date first set 
forth above.

Novalon Pharmaceutical Corporation     Cubist Pharmaceuticals, Inc.


/s/ Dana M. Fowlkes                    /s/ Scott M. Rocklage    
- -----------------------------------    -----------------------------  
By:  Dana M. Fowlkes, M.D., Ph.D.      By:  Scott M. Rocklage, Ph.D.
Title:  Chairman, President, and CEO   Title:  President and CEO
                                      
                                       -11-

<PAGE>

                                                                   Exhibit 10.3

                              License Agreement

This Agreement is made this 7th day of November, 1997 (the "Effective Date"), 
by and between ELI LILLY & COMPANY having its principal place of business at 
Lilly Corporate Center, Indianapolis, Indiana 46285 and its Affiliates 
(collectively, "ELI LILLY") and Cubist Pharmaceuticals Incorporated, a 
Delaware corporation having its principal place of business at 24 Emily 
Street, Cambridge, MA, 02139 and its Affiliates (collectively "CUBIST") as 
follows:

                                    Article 1
                                   Definitions

As used throughout this Agreement, the following terms shall have the 
meanings indicated in this Article.

"Affiliate" means any corporation or other entity which directly or 
indirectly controls, is controlled by or is under common control with a party 
to this Agreement.  A corporation or other entity shall be regarded as in 
control of another corporation or entity if it owns or directly or indirectly 
controls more than [         ]* of the outstanding voting stock or other 
ownership interest of the other corporation or entity, or if it possesses, 
directly or indirectly, the power to manage, direct or cause the direction of 
the management and policies of the corporation or other entity or the power 
to elect or appoint [         ]* or more of the members of the governing body 
of the corporation or other entity.  Any such other relationship as in fact 
results in actual control over the management, business and affairs of a 
corporation or other entity shall also be deemed to constitute control.

"Average Market Price" shall mean the average closing price for CUBIST common 
stock for twenty consecutive trading days, the last day of which is 
immediately prior to five days prior to the event that triggered such payment 
of CUBIST common stock to ELI LILLY.

"Compound" means [         ]* or a pharmaceutically acceptable salt thereof 
or a pharmaceutically acceptable formulation thereof which is in Lilly's 
possession on the Effective Date.

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

*    Confidential Treatment requested:  material has been omitted and filed
     separately with the Commission.

<PAGE>

"Confidential Information" means any information and data received by a party 
from the other party, as well as the terms of this Agreement. Notwithstanding 
the foregoing, Confidential Information shall not include any part of such 
Confidential Information that: (1) is or becomes part of the public domain 
other than by unauthorized acts of the party obligated not to disclose such 
Confidential Information; (ii) can be shown by written documents to have been 
disclosed to the receiving party by a third party, provided such Confidential 
Information was not obtained by such third party directly or indirectly from 
the disclosing party with an obligation for such third party to maintain the 
confidentiality of such information; (iii) prior to disclosure under this 
Agreement, was already in the possession of the receiving party and such 
possession can be evidenced by written documents, provided such Confidential 
Information was not obtained directly or indirectly from the disclosing party 
with an obligation to maintain the confidentiality of such information, (iv) 
can be shown by written documents to have been independently developed by the 
receiving party without breach of any of the provisions of this Agreement and 
such independent development can be evidenced by written documents', or (v) 
is disclosed by the receiving party pursuant to interrogatories, requests for 
information or documents, subpoena, civil investigative demand issued by a 
court or governmental agency or as otherwise required by law, provided, 
however, that the receiving party notifies the disclosing party immediately 
upon receipt thereof, giving such disclosing party sufficient advance notice 
to permit it to seek a protective order or other similar order with respect 
to such Confidential Information and provided, further, that the receiving 
party furnishes only that portion of the Confidential Information which it is 
advised by counsel is legally required whether or not a protective order or 
other similar order is obtained by the disclosing party.

"ELI LILLY Program" shall mean a research, development and/or marketing 
project that ELI LILLY, its Affiliates, and/or a third party, pursuant to an 
Agreement with ELI LILLY, have been committing non-trivial financial and/or 
human resources to advance.

"Field" shall mean the treatment of infectious diseases except, [         ]*

"Know-How" means all information and data reasonably useful for the 
development, process development, regulatory approval, manufacture, 

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*    Confidential Treatment requested:  material has been omitted and filed
     separately with the Commission.

                                       -2-

<PAGE>

use, formulation or sale of Compound in the Field which (i) is in the 
possession of ELI LILLY as of the Effective Date or is created by ELI LILY 
after the Effective Date, (ii) ELI LILLY can provide using reasonble efforts 
and (iii) ELI LILLY is free to provide without obligation to any third party. 
Such Know-How may include information that is secret, whether or not 
patentable, relating to materials, methods, processes, procedures, protocols, 
techniques, formulae and data reasonably useful for the development, 
regulatory approval, manufacture or use of Compound in the Field.

"Major Market Country" shall mean the United States, Canada, Japan, the 
United Kingdom, Germany, France, Italy, Spain, Switzerland, Netherlands and 
Belgium.

"Net Sales" means the amounts received by CUBIST and/or its sublicensees on 
sales or other transfers for commercial use of Compound, and products 
incorporating Compound, to independent third parties in bona fide arms length 
transactions, less the following deductions actually allowed and taken by 
such independent third parties and not otherwise recovered by or reimbursed 
by CUBIST or its sublicensees:

     (a)  [         ]*;

     (b)  [         ]*;

     (c)  [         ]*; and

     (d)  [         ]*.

If CUBIST or its sublicensees sell or transfer Compound, or any products 
incorporating Compound for commercial use, other than (i) reasonable 
quantities of promotional samples or (ii) to an independent third party in a 
bona fide arm's length transaction, Net Sales shall be determined based upon 
the resale or other retransfer to an independent third party in an arm's 
length transaction by the entity to whom such Compound, or product, was sold 
or transferred by Cubist or its sublicensee.  If there is no such resale or 
retransfer, Net Sales shall be determined based on the average Net Sales 
price as determined in the immediately preceding royalty accounting period as 
set forth in Section 4.02.

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*    Confidential Treatment requested:  material has been omitted and filed
     separately with the Commission.

                                       -3-

<PAGE>

In the event Compound is sold as a component of a combination of functional 
elements, Net Sales for purposes of determining royalty payments on such 
combination shall be calculated by multiplying the Net Sales price of such 
combination by the fraction [         ]*  In the event no separate sale of 
either such above-designated Compound or such above-designated non-Compound 
portion of the combination is made during the accounting period in which the 
sale of the combination was made, Net Sales shall be calculated by 
multiplying the Net Sales price of the combination by the fraction [         ]
*.

"Patent(s)" means any of ELI LILLY's patents, pending patent applications, 
and future. patent applications, including, but not limited to, those set 
forth on Exhibit 3 attached hereto, which claim Compound, formulations of 
Compound, processes for preparing Compound or use of Compound in the Field, 
any United States or foreign counterpart patents and applications, and any 
continuing, divisional, reissue, re-examination and substitute patents and 
applications based, in whole or in part, on any of the foregoing patents and 
patent applications, together with all continuations, continuations-in-part, 
divisions, patents of addition, reissues, renewals, extensions, supplementary 
protection certificates and complementary protection certificates of any of 
the foregoing which are owned by ELI LILLY and under which ELI LILLY has 
rights to grant a sublicenses.

"Phase II Clinical Trial" shall mean clinical studies conducted in accordance 
with Good Clinical Practices ("GCPs") in a small number of healthy volunteers 
to establish efficacy and obtain a preliminary indication of the dosage of 
Compound.

"Phase III Clinical Trial" shall mean large scale clinical studies in 
patients conducted in accordance with GCPs primarily to establish safety and 
efficacy of Compound.

"Valid Claim" shall mean a claim of an issued and unexpired Patent which has 
not been withdrawn, canceled, revoked, disclaimed, or held invalid, 
unenforceable or unpatentable by a final and unappealed (within the time 
allowed for appeals) or unappealable judgment or decision of a court or other 
governmental agency of competent jurisdiction.

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*    Confidential Treatment requested:  material has been omitted and filed
     separately with the Commission.

                                       -4-

<PAGE>


                                    Article 2
                                  License Grant

2.00   ELI LILLY grants to CUBIST the following worldwide, exclusive licenses 
subject to the conditions set forth herein below in Section 2.01:

(a)    Under the Patents, to develop, manufacture, formulate, have 
manufactured, import, use, distribute for sale, market and sell Compound in 
the Field; and

(b)    To use the Know-How for the development, manufacture, formulation, 
use, distribution for sale, marketing, and sale of Compound consistent with 
the terms of this Agreement.

2.01   (i)  Subject to Section 2.01(ii) below, CUBIST shall have the right to 
grant sub-licenses under the Patents and Know-How, for use in the Field, 
provided that the terms and conditions of such sub-licenses are consistent 
with and no less restrictive than the terms and conditions of this Agreement, 
and any such disclosure or transfer of Compound shall be limited to use 
solely in the Field.  

       (ii) In the event that, during the term of this Agreement, CUBIST 
actively seeks to grant a sub-license to a third party for the development of 
the Compound in the Field which sublicense includes, but is not necessarily 
limited to, the right to develop and/or commercialize an oral or intravenous 
formulation of the Compound, CUBIST agrees to inform ELI LILLY of such 
determination by written notice, which notice shall include (a) a description 
in reasonable detail of the subject matter of the proposed sub-license and 
(b) the terms on which CUBIST would be willing to grant ELI LILLY such rights 
(the "Sublicense Notice").  ELI LILLY shall thereupon have a period of 
[         ]* (the "Notice Period") to either accept CUBIST's terms in writing 
or to make a written counter-proposal.  If ELI LILLY accepts CUBIST's 
proposal or makes a counter-proposal, the parties will, for a period of up to 
[         ]* from receipt by ELI LILLY of the Sublicense Notice (the 
"Negotiation Period"), seek in good faith to enter into a definitive 
agreement for such rights.  If ELI LILLY does not by the expiration of the 
Notice Period either accept CUBIST's proposal or make a counter-proposal, or 
the parties negotiate in 

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*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                       -5-

<PAGE>

good faith and fail to reach agreement by the expiration of the Negotiation 
Period, CUBIST shall be free to enter into a sub-license for such rights with 
a third party,[         ]*.

2.02   CUBIST shall notify ELI LILLY within [         ]* of the identity of 
each sublicensee together with a summary of the principal terms of any 
sub-license, and shall take all reasonable steps in the event of a breach of 
any sub-license by the sub-licensee to enforce the same.

2.03   CUBIST acknowledges that ELI LILLY has disclosed certain Know-How to 
CUBIST prior to the execution of this Agreement and CUBIST shall treat such 
Know-How in accordance with the terms of this Agreement.  During the term of 
this Agreement, ELI LILLY shall disclose to CUBIST such other Know-How as is 
directly related to CUBIST's activities under the license granted in Article 
2.00 and which ELI LILLY can provide to CUBIST using reasonable efforts.

2.04   Promptly after the Effective Date, ELI LILLY may provide CUBIST with 
reasonable access to consult with pertinent ELI LILLY employees that have had 
prior experience working with Compound in the Field at ELI LILLY to enhance 
the preclinical or clinical development and manufacturing of the Compound, 
provided that such consultation shall occur at a mutually agreeable time and 
place and that ELI LILLY will only provide such access to current employees 
which are reasonably able to provide CUBIST with ELI LILLY Know-How relating 
to the scale-up, manufacture, or formulation of Compound for use in the 
Field.  CUBIST shall be responsible for all reasonable expenses its own 
personnel and ELI LILLY personnel incur in association with any such 
consultations.  Upon CUBIST's request, ELI LILLY shall provide CUBIST and its 
sublicensees with all Know-How, information and data owned by ELI LILLY which 
ELI LILLY can provide using reasonable efforts to the extent such Know-How, 
information and data is reasonably required to further CUBIST's or its 
sub-licensees' ability to develop, scale-up, obtain regulatory approval for, 
manufacture, distribute, use, formulate or sell Compound for use in the 
Field.  CUBIST agrees to treat all Know-How disclosed to it as Confidential 
Information of ELI LILLY.

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*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                       -6-

<PAGE>

2.05   ELI LILLY shall deliver to CUBIST, ELI LILLY's available inventory of 
Compound.  ELI LILLY shall not be required to perform any manufacturing of 
Compound for CUBIST.


                                    Article 3
                                  Diligence and
                                   Regulatory

3.00   CUBIST shall use commercially reasonable efforts to develop and test 
the Compound in the Field, to perform all pre-clinical, clinical and other 
studies of such Compound necessary to obtain regulatory approval for the 
manufacture, use and sale of Compound, and to market and sell Compound in the 
Field in all countries in which it is commercially reasonable to market such 
Compound.  CUBIST shall fully fund these efforts, as well as any other work 
that is required for CUBIST to develop and market Compound in the Field.

CUBIST has prepared and provided to ELI LILLY a preliminary development plan 
attached hereto as Exhibit 2, which contains CUBIST's estimate, based upon 
data currently available to CUBIST concerning the subject matter of this 
Agreement, of the probable course of Compound development hereunder. As 
Compound development progresses, CUBIST will revise the plan from time to 
time to reflect the development and evolution of its plans regarding 
development, regulatory approvals, manufacturing and formulation, and 
clinical trials, and will provide ELI LILLY with a copy of any such 
materially revised plan as soon as reasonably possible after such revision 
occurs.  [         ]*.  The terms under which ELI LILLY shall acquire back 
all such rights shall be the subject of a separate agreement to be negotiated 
in good faith by the parties.

3.01   CUBIST represents that it intends to conduct clinical testing of 
Compounds to the extent that such testing is supported by safety and efficacy 
data required by the applicable regulatory agency.

3.02   Within thirty (30) days of the Effective Date, ELI LILLY shall deliver 
to CUBIST a copy of the Investigational New Drug Application filed with the 
United States Food and Drug Administration and foreign equivalents, if any 
relating to the Compound, and as soon thereafter as is commercially 
practicable, ELI LILLY shall transfer all other reasonably 

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*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                       -7-

<PAGE>

transferable information used in regulatory filings, laboratory data, 
clinical data, toxicology data, and scale-up, manufacturing and formulation 
information relating to Compound to CUBIST in a commercially reasonable time 
frame.

3.03   Both ELI LILLY and CUBIST shall submit information and file reports to 
various governmental agencies to the extent they are lawfully required on 
compounds under clinical investigation, compounds proposed for marketing, or 
marketed drugs.  Information must be submitted at the time of initial filing 
for investigational use in humans and at the time of a request for market 
approval of a new drug.  In addition, supplemental information must be 
provided on compounds at periodic intervals and adverse drug experiences must 
be reported at more frequent intervals depending on the severity of the 
experience.  Consequently, ELI LILLY and CUBIST agree, to the extent required 
by applicable law or regulations, to:

       1) provide to one another for initial and/or periodic submission to 
governmental agencies significant information on Compound from pre-clinical 
laboratory, animal toxicology and pharmacology studies, as well as serious or 
unexpected adverse experience reports from clinical trials and marketed 
commercial experiences with Compound.

       2) report to one another in such a manner and time so as to enable 
each party to comply with all governmental laws and regulations in 
territories for which registration is or will be sought.

       Serious adverse experience means any experience that suggests a 
significant hazard, contraindication, side effect or precaution, or any 
experience that is fatal or life threatening, is permanently disabling, 
requires or prolongs inpatient hospitalization, or is a congenital anomaly, 
cancer or overdose.

       Unexpected adverse experience is one not identified in nature, 
specificity, severity or frequency in a current investigator brochure for 
Compound, or in CUBIST's labeling for Product.

3.04   CUBIST also agrees that if it contracts with a third party for 
research to be performed by such third party on Compound or if it sublicenses 
its rights herein to a third party, it will require such third party to 
comply with the reporting obligations (both to ELI LILLY and to regulatory 
agencies) set forth in this Section.


                                       -8-

<PAGE>

3.05   CUBIST shall comply with all applicable laws and regulations regarding 
the care and use of experimental animals, in a country where the development 
is carried out.  All animals used to evaluate Compound shall be provided 
humane care and treatment in accordance with the most acceptable veterinary 
practices.


                                    Article 4
                                    Payments

4.00   Cubist will pay [         ]* to ELI LILLY as a license fee upon the 
Effective Date of this Agreement.

4.01   CUBIST will also pay to ELI LILLY the following payments:

       (a) [         ]* as a license fee, to be paid upon the earlier of (i) 
completion of CUBIST or CUBIST's sub-licensee's first Phase II Clinical Trial 
in a Major Market Country or (ii) upon the initiation of CUBIST or CUBIST's 
sub-licensees of patient dosing in the first Phase III Clinical Trial in a 
Major Market Country; said license fee to be paid in CUBIST common stock 
based on the Average Market Price for such CUBIST common stock;

       (b) [         ]* as a license fee, to be paid upon the date of 
CUBIST's or CUBIST's sub-licensee's first regulatory submission in a Major 
Market Country for a license to market Compound, said license fee to be paid 
in CUBIST common stock, based on the Average Market Price for such CUBIST 
Common Stock; and 

       (c) [         ]* as a license fee, to be paid upon the date of 
CUBIST's or CUBIST's sub-licensee's first regulatory approval in a Major 
Market Country for their application to market Compound, said license fee to 
be paid in CUBIST common stock, based on the Average Market Price for such 
CUBIST Common Stock.

4.02   During the first [         ]* after the first commercial sale of 
Compound in a Major Market Country, CUBIST will pay ELI LILLY royalties of 
[         ]* on the first [         ]* of aggregate annual Net Sales of 
Compounds and [         ]* on aggregate Net Sales between [         ]* and 
[         ]* and [         ]* on aggregate annual Net Sales in excess of 

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*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                       -9-

<PAGE>

$150,000,000 in all countries ("Protected Countries") for so long as (a) the 
manufacture, use or sale of Compound is covered by a Valid Claim, or (b) 
there is no significant generic competition which causes a reduction of Net 
Sales of Compound by [thirty (30) percent]* or more in any [twelve month]* 
period.

After the expiration of the first [         ]* after first commercial sale in 
a Major Market Country, CUBIST will pay ELI LILLY royalties of [         ]* 
on the first [         ]* of aggregate annual Net Sales of Compound and 
[         ]* on aggregate annual Net Sales between [         ]* and 
[         ]* and [         ]* on aggregate annual Net Sales in excess of 
[         ]* in all countries ("Protected Countries") for so long as (a) the 
manufacture, use or sale of a Compound is covered by a Valid Claim, or (b) 
there is no significant generic competition which causes a reduction of Net 
Sales of Compound by [         ]* or more in any [twelve month]* period.

4.03   For a period of [         ]* following first commercial sale in a 
Major Market Country, CUBIST will pay ELI LILLY royalties of [         ]* of 
aggregate annual Net Sales in all countries that are not Protected Countries, 
but where the manufacture, use, sale or transfer of Compound utilizes 
Know-How provided to CUBIST by ELI LILLY.  [         ]* of Net Sales in 
countries that are not Protected Countries shall be included in aggregate 
annual Net Sales of Compound calculated pursuant to Section 4.02 for purposes 
of determining the appropriate royalty percentage in Section 4.02.

4.04   In the event that CUBIST can demonstrate that external factors beyond 
its control (such as government-imposed price controls) have materially 
reduced CUBIST's profitability on sales of Compound in any Country, ELI LILLY 
agrees to consider in good faith an equitable reduction in the royalty rate 
applicable to such country under Section 4.02 or 4.03, as applicable.  

4.05   The first payment under Articles 4.04 and 4.05 shall be due within 
[         ]* after December 31 or June 30, whichever such date occurs first 
after the first commercial sale or transfer of Compound.  Thereafter, 
payments under Articles 4.04 and 4.05 shall be made within [         ]* of 
each of December 31 and June 30 of each year.  Payments shall be 

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*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -10-

<PAGE>

accompanied by a report showing all facts necessary to the calculation of 
amounts due.

4.06   All royalty payments to ELI LILLY shall be in United States dollars.  
Royalty payments based on Net Sales in currencies other than United States 
dollars shall be converted to US dollars according to the average official 
rate of exchange for that currency as published in the Wall Street Journal on 
the first and last days of the six-month period in which that royalty accrued 
(or, if not published on that day, the first and last publication days for 
the Wall Street Journal during that six month period).  If such exchange rate 
is not published in the Wall Street Journal, then the rate shall be 
determined using average conversion rates that are accepted in the industry 
on the first and last days of the six month period in which the royalty 
accrued.  All payments that are not to be made in CUBIST common stock, as 
specified herein. shall be paid in United States dollars.

4.07   If by law, regulation, or fiscal policy of a particular country, 
conversion into United States dollars or transfer of funds of a convertible 
currency to the United States is restricted or forbidden, CUBIST shall give 
ELI LILLY prompt written notice and shall pay the royalty due under this 
Article 4 through such means or methods as are lawful in such country as ELI 
LILLY may reasonably designate.  Failing the designation by ELI LILLY of such 
lawful means or methods within thirty (30) days after such written notice is 
given to ELI LILLY, CUBIST shall deposit such royalty payment in local 
currency to the credit of ELI LILLY in a recognized banking institution 
designated by ELI LILLY, or if none is designated by ELI LILLY within the 
thirty (30) day period described above, in a recognized banking institution 
selected by CUBIST In and identified in a written notice to ELI LILLY by 
CUBIST, and such deposit shall fulfill all obligations of CUBIST with respect 
to such royalties.

4.08   CUBIST and its sub-licensees, if any, shall maintain complete and 
accurate books and records with respect to sale and use of Compound and all 
other information necessary to permit calculation and verification of amounts 
due under this Article 4 and Article 5 and Article 6, set forth below.  Upon 
reasonable prior written notice to CUBIST, ELI LILLY may cause an independent 
agent to audit the books and records of CUBIST and its sub-licensees, if any, 
pertaining to the payment to ELI LILLY hereunder, for the sole purpose of 
confirming the amounts due, and the accuracy of the payments and reports; 
provided that no such audit shall 


                                      -11-

<PAGE>

be permitted for periods exceeding [         ]* prior to the date CUBIST 
receives such written notice.  Any such audit shall be performed at ELI 
LILLY's expense during normal business hours and shall, if so required by 
CUBIST, be performed by a firm of independent public accountants reasonably 
acceptable to CUBIST.  The independent agent shall report only such 
information as would properly be included in such a report.  In the event of 
an underpayment, CUBIST shall promptly remit to ELI LILLY all amounts due.  
CUBIST shall require any sublicensee to agree to comply with all of the terms 
of this paragraph, including but not limited to making such report, 
maintaining such records, and permitting such audit.

[         ]*

4.09   Any late payments due to ELI LILLY shall be subject to interest 
charges which rate shall be established at [         ]* above the prime 
interest rate in effect on the date that such payment was first due to ELI 
LILLY.

                                    Article 5
                                Minimum Royalties

5.00   [         ]* after December 31 or June 30, whichever date occurs 
first, following the first twelve (12) month period after the first 
commercial sale of Compound in a Major Market Country, CUBIST will pay ELI 
LILLY [         ]* as a minimum royalty.

5.01   [         ]* after December 31 or June 30, whichever date occurs 
first, following the second twelve (12) month period after the first 
commercial sale of Compound in a Major Market Country, CUBIST will pay to ELI 
LILLY [         ]* as a minimum royalty.

5.02   [         ]* after December 31 or June 30, whichever date occurs 
first, following the third twelve (12) month period after the first 
commercial sale of Compound in a Major Market Country, CUBIST will pay ELI 
LILLY [         ]* as a minimum royalty.

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -12-

<PAGE>

5.03   CUBIST shall deduct any withholding taxes from the payments agreed 
upon under this Agreement and pay them to the proper tax authorities as 
required by applicable law.  CUBIST shall maintain official receipts of any 
withholding taxes and forward these receipts to ELI LILLY.  The parties will 
exercise their best efforts to ensure that any withholding taxes imposed are 
reduced as far as legally possible under the provisions of any treaties 
applicable to any payment made hereunder.


                                    Article 6
              Indemnification, Insurance and Limitation of Damages

6.00   CUBIST shall indemnify ELI LILLY and its directors, officers, 
employees and agents, as set forth in Article 6.02, with respect to (a) any 
third party claim or action against ELI LILLY based on CUBIST's or CUBIST's 
sublicensee's developing, making, distributing, selling, marketing, using or 
otherwise transferring Compound and (b) breach of any representation or 
warranty contained in Article 7 by CUBIST, provided, however that CUBIST 
shall have no duty to indemnify ELI LILLY to the extent that any such claim 
or action is subject to ELI LILLY's duty of indemnification set forth in 
Article 6.01.

6.01   ELI LILLY shall indemnify CUBIST, as set forth in Article 6.02, with 
respect to (a) any third party claim or action against CUBIST based on (i) 
activities of ELI LILLY, Its employees, or its agents with respect to 
Compound prior to the Effective Date, (ii) the negligence or willful 
misconduct of ELI LILLY, its employees and agents, and (b) breach of any 
representation or warranty contained in Article 7 by ELI LILLY, provided, 
however, that ELI LILLY shall have no duty to indemnify CUBIST to the extent 
that any such claim or action Is subject to CUBIST's duty of indemnification 
set forth in Article 6.00.

6.02   With respect to the claims and actions referenced in Articles 6.00 and 
6.01 above, the indemnifying party shall defend any such claim or action 
against the indemnified party and shall pay all damages, judgments, costs, 
expenses (including attorneys' fees, but only to the extent that the 
indemnifying party fails to promptly assume the defense of such claims and 
actions) and liability awarded against the indemnified party, or settlements 
entered into, with respect to such claim or action, provided that the 
indemnified party (a) provides prompt written notice to the indemnifying 
party of any such claim or action, (b) allows the indemnifying party to 
assume the defense and settlement thereof, with counsel of its choice, and 
(c) provides reasonable assistance to the indemnifying party in connection 
with the defense and settlement thereof.

                                      -13-

<PAGE>

6.03   Prior to administration of Compound to any human, CUBIST shall provide 
to ELI LILLY an endorsement verifying customary levels of insurance for 
damages, judgments, costs, expenses (including attorneys' fees) and liability 
with respect to any third party claim or action based on CUBIST's or CUBIST's 
sublicensee's manufacture, distribution, use, marketing or sale of Compound, 
naming ELI LILLY, its directors, officers and employees as additional 
insureds on the policy, and shall have copies of such insurance policies 
delivered to ELI LILLY as soon as reasonably practical.  In addition, 
evidence of insurance in the form of such endorsement shall be furnished to 
ELI LILLY at the inception of each subsequent phase of human clinical trials, 
as well as upon granting of NDA and PLA, but in no event less than annually 
upon the insurance policy renewal date.  Such insurance shall remain in 
effect at customary levels throughout the term of this Agreement.  ELI LILLY 
shall be informed thirty (30) days prior to any cancellation of or material 
decrease in the amount of coverage of such insurance by CUBIST or any other 
action that CUBIST reasonably should believe will result in decrease or 
cancellation of such insurance, or immediately upon receipt by CUBIST of a 
notice of cancellation of such insurance, on the effective date of which 
cancellation or decrease, clinical use of Compound must immediately cease, 
subject to CUBIST obtaining adequate replacement insurance.  The foregoing 
shall not be interpreted to limit the scope or amount of CUBIST's 
indemnification obligation under Article 6.00.

Notwithstanding the foregoing, CUBIST shall be entitled to adopt an insurance 
program containing self insurance elements, to the extent that CUBIST is able 
to demonstrate to the reasonable satisfaction of ELI LILLY that such a 
program is not unusual in the industry for companies similarly situated 
(including financial condition to support such a program) or with respect to 
products with a risk profile similar to products licensed hereunder.

6.04   Other than as set forth elsewhere in this Agreement, in no event shall 
either party be liable for any special, consequential, indirect, or 
incidental damages, however caused and on any theory of liability, arising 
out of this Agreement.  These limitations shall apply notwithstanding any 
failure of essential purpose of any limited remedy.

                                      -14-

<PAGE>


                                    Article 7
                   Representations, Warranties And Disclaimer

7.00   Each party represents and warrants to the other party that (a) it has 
the right to enter into this Agreement; (b) this Agreement has been duly 
authorized by all necessary action of such party and (c) the execution of 
this Agreement by the party will not conflict with or breach any other 
agreement to which it is a party or by which it is bound.

7.01   ELI LILLY represents that (a) it is party to an agreement with 
Ophidian which Agreement includes a covenant not to compete (b) if CUBIST 
notifies ELI LILLY that it desires to develop Compound for the treatment of 
clostridium difficile-induced colitis, ELI LILLY shall notify CUBIST if such 
covenant has expired or is terminated, (c) there is no other agreement known 
to ELI LILLY to which it is a party and by which it is bound that would 
conflict with or be breached by ELI LILLY granting the license in Article 2, 
(d) except as previously disclosed in writing to CUBIST, no other person or 
entity has claimed, or to ELI LILLY's knowledge has, any rights to or 
interest in the Patents and the Know- How in the Field to be licensed 
hereunder, and that to its knowledge, the manufacture, use, distribution, 
marketing or sale of the Compound(s) can be performed without infringing the 
patent rights of any third party, and (e) as of the Effective Date ELI LILLY 
is conducting no development program relating to analogs or derivatives of 
the Compound, provided that ELI LILLY shall be free to commence and conduct 
any such program at any time hereafter.

7.02   ELI LILLY makes no representation or warranty that Compound made, 
used, or sold under the licenses granted herein is or will be free of claims 
of infringement of the patent rights of any third party (although it 
represents and warrants that it has no knowledge of (i) such infringement not 
heretofore disclosed to Cubist and (ii) any payment obligations that CUBIST 
will have to third parties in connection with CUBIST's development, 
manufacturing, marketing or sale of Compound) and makes no warranty or 
representation that any of the Patents to be licensed hereunder are valid or 
enforceable.

7.03   EXCEPT AS SET FORTH IN ARTICLES 7.00 AND 7.01 ABOVE, ELI LILLY 
EXPRESSLY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT 
LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, 
OR NON-INFRINGEMENT.

                                      -15-

<PAGE>

7.04   CUBIST acknowledges that the Compound(s) are highly experimental in 
nature [         ]*.

7.05   CUBIST warrants that all CUBIST common stock to be paid to ELI LILLY 
pursuant to this Agreement shall be properly issued and all legal 
requirements associated with such issuance to ELI LILLY shall be fulfilled.

The number of shares of CUBIST common stock payable to ELI LILLY shall be 
determined by dividing the payment amount by the Average Market Price to 
determine the number of shares.

For illustration purposes only, upon completion of CUBIST's first Phase II 
Clinical Trial, CUBIST shall pay ELI LILLY [         ]* in CUBIST common 
stock.  The number of shares to be transferred to ELI LILLY shall be 
determined by dividing [         ]* by the Average Market Price.


                                  Article 8
                            Patents And Know-How

8.00   In the event either of the parties shall learn of the infringement, or 
a challenge to the validity, enforceability, or title of any Patent 
(including any action for a declaratory Judgment) right licensed hereunder, 
or an action for unauthorized use or misappropriation of Know-How licensed 
hereunder, such party shall promptly notify the other party thereof in 
writing and shall provide the other party with any evidence in its possession 
of such infringement, challenge or action.

8.01   Actions Affecting Other ELI LILLY Programs.

       (i)  During the term of this Agreement, ELI LILLY shall have the sole 
right, but no obligation, to bring or defend any suit or action relative to 
the patenting or patent enforcement directly relating to Compound, 
manufacture, use, distribution, marketing or sale of Compound in the Field 
which suit or action also materially affects intellectual property rights of 
ELI LILLY that relate to an active ELI LILLY Program, including the fight to 
recover for past infringement, or the unauthorized use or misappropriation of 
Know-How in the Field.  If ELI LILLY finds it necessary or desirable to join 
CUBIST in such suit or action, CUBIST 

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -16-

<PAGE>

shall execute all papers and perform such other acts as may reasonably be 
required, at ELI LILLY's expense, to join CUBIST in such suit or action. 
CUBIST may, at its option, join as a party to such suit and be, at its 
expense, represented by counsel of its choice, provided that ELI LILLY shall 
continue to control the prosecution or defense of such suit.  Unless CUBIST 
and ELI LILLY otherwise agree, any amount recovered in any such action, 
whether by judgment or settlement, after deducting ELI LILLY's reasonable 
expenses (including attorneys' fees), and payment to CUBIST of damages in 
respect of CUBIST's lost profits for which ELI LILLY recovers payment and 
CUBIST's reasonable expenses (including attorneys' fees) incurred in 
connection with an action or suit in which ELI LILLY requested that CUBIST be 
Joined or in which CUBIST voluntarily joined, shall be paid to or retained by 
ELI LILLY.

       (ii) In the event ELI LILLY faIls to take action with respect to such 
infringement, or challenge to validity, enforceability or title, or action 
for unauthorized use or misappropriation of Know-How in the Field which 
materially affect intellectual property rights of ELI LILLY that relate to an 
active ELI LILLY program, within a reasonable period, no less than three (3) 
months, following receipt by ELI LILLY of reliable evidence of infringement, 
CUBIST shall have the right, but no obligation, to bring, or defend any such 
suit or action.  ELI LILLY may, at its option, join as a party to such suit 
and be, at its expense, represented by counsel of its choice, provided that 
CUBIST shall continue to control the prosecution or defense of such suit.  If 
CUBIST finds it necessary to join ELI LILLY in such suit or action, ELI LILLY 
shall execute all papers and perform such other acts as may be reasonably 
required at CUBIST's expense.  Unless CUBIST and ELI LILLY otherwise agree, 
any amount recovered in any such action or suit, whether by judgment or 
settlement, after deducting CUBIST's reasonable expenses (including 
attorneys' fees) and payment to ELI LILLY of damages in respect of ELI 
LILLY's lost royalties for which CUBIST recovers payment and after payment to 
ELI LILLY of its reasonable expenses (including attorneys' fees) incurred in 
connection with an action or suit in which CUBIST requested that ELI LILLY be 
joined or which ELI LILLY voluntarily owned, shall be paid to or retained 
entirely by CUBIST.

                                      -17-

<PAGE>

8.02   Actions Not Affecting Other Lilly Programs.

       (i)  During the term of this Agreement, CUBIST shall have the sole 
right, but no obligation, to bring or defend any suit or action relative to 
the patenting or patent enforcement directly relating to Compound, 
manufacture, use, distribution, marketing or sale of Compound in the Field 
which suit or action does not materially affect intellectual property rights 
of ELI LILLY that relate to an active ELI LILLY Program, including the right 
to recover for past infringement, or the unauthorized use or misappropriation 
of Know-How in the Field.  If CUBIST finds it necessary or desirable to join 
ELI LILLY in such suit or action, CUBIST shall execute all papers and perform 
such other acts as may reasonably be required, at CUBIST's expense, to join 
ELI LILLY in such suit or action. ELI LILLY may, at its option, join as a 
party to such suit and be, at its expense, represented by counsel of its 
choice, provided that CUBIST shall continue to control the prosecution or 
defense of such suit.  Unless CUBIST and ELI LILLY otherwise agree, any 
amount recovered in any such action or suit, whether by Judgment or 
settlement, after deducting CUBIST's reasonable expenses (including 
attorneys' fees) and payment to ELI LILLY of damages in respect of ELI 
LILLY's lost royalties for which CUBIST recovers payment and after payment to 
ELI LILLY of its reasonable expenses (including attorneys' fees) in 
connection with an action or suit in which CUBIST requested that ELI LILLY be 
joined or which ELI LILLY voluntarily joined, shall be paid to or retained 
entirely by CUBIST.

       (ii) In the event CUBIST faIls to take action with respect to such 
infringement, or challenge to validity, enforceability or title, or action 
for unauthorized use or misappropriation of Know-How in the Field which does 
not materially affect intellectual property rights of ELI LIILLY that relate 
to an active ELI LILLY program, within a reasonable period, no less than 
three (3) months, following receipt by CUBIST of reliable evidence of 
infringement, ELI LILLY shall have the right, but no obligation, to bring, or 
defend any such suit or action.  If ELI LILLY finds it necessary to join 
CUBIST in such suit or action, CUBIST shall execute all papers and perform 
such other acts as may be reasonably required at ELI LILLY's expense.  CUBIST 
may, at its option, join as a party to such suit and be, at its expense, 
represented by counsel of its choice, provided that ELI LILLY shall continue 
to control the prosecution or defense of such suit.  Unless CUBIST and ELI 
LILLY otherwise agree, any amount recovered in any such action, whether by 
judgment or settlement, after deducting ELI LILLY's reasonable expenses 
(including attorneys' fees), and payment to CUBIST of damages in respect of 
CUBIST's lost profits 

                                      -18-

<PAGE>

for which ELI LILLY recovers payment and CUBIST's reasonable expenses 
(including attorneys' fees) incurred in connection with an action or suit in 
which ELI LILLY requested that CUBIST be joined or in which CUBIST 
voluntarily joined, shall be paid to or retained by ELI LILLY.

8.03   If CUBIST determines in good faith in consultation with ELI LILLY that 
the manufacture, use or sale of Compound in the Field would infringe the 
intellectual property rights of a third party unaffiliated with either CUBIST 
or ELI LILLY, and it therefore becomes necessary to pay a royalty, license 
fee or other compensation to that party to avoid a claim of infringement, 
then CUBIST and ELI LILLY shall each bear [         ]* provided that ELI 
LILLY's share of such obligation shall be deducted from CUBIST's royalty 
payments due to ELI LILLY, and further provided that CUBIST's payment, 
pursuant to this Agreement, to ELI LILLY in any one (1) year would never be 
reduced by more than [         ]*.  If, as a result of the preceding 
sentence, CUBIST bears more than [         ]* of the royalty, license fee or 
other compensation due to a third party under this Section 8.04, the amount 
of the excess may be carried forward and used by CUBIST as a credit against 
royalties due ELI LILLY in subsequent royalty periods, provided that in no 
event shall CUBIST's royalty payments to ELI LILLY be reduced by more than 
[         ]*.

8.04   Each party agrees to cooperate with the other in legal action taken to 
enforce, defend or maintain a Patent licensed hereunder or concerning 
Know-How licensed hereunder, including litigation proceedings.

8.05   ELI LILLY shall take all steps necessary to maintain the Patents in 
the Field, including without limitation the preparation, filing and 
prosecution of new patent applications, through an attorney of their choice.  
CUBIST shall reimburse ELI LILLY for one half (1/2) of its reasonable 
out-of-pocket expenses incurred after the Effective Date paid to third 
parties for patent preparation, reasonable attorney fees, patent filing fees, 
applications for patent term extensions and SPC's, translation fees for 
patent purposes, and patent maintenance fees for Patents licensed hereunder 
within thirty (30) days of receipt of an itemized expense report from ELI 
LILLY for such patent related expenses.

(a)    If CUBIST reasonably believes that ELI LILLY is failing to maintain 
one or more of its Patents in the Field, CUBIST shall provide 

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -19-

<PAGE>

ELI LILLY sixty (60) days written notice of its intent to assume maintenance 
of such Patents itself If ELI LILLY fails to resume maintenance of the 
Patents in the Field that CUBIST reasonably believes that ELI LILLY is 
failing to maintain or to provide reasonable evidence demonstrating that ELI 
LILLY is maintaining these Patents in the Field at the expiration of such 
sixty (60) day period, CUBIST may, through an attorney of their choice, take 
all necessary actions to maintain the Patents, and shall be entitled to 
deduct [         ]* of the costs and expenses incurred from any of CUBIST's 
payments pursuant to Article 4.04. In such event, ELI LILLY shall complete 
all acts and execute and deliver all instruments and other documents and 
render CUBIST assistance as is necessary or desirable for CUBIST to assume 
the filing, prosecution and maintenance of such Patents in the Field that ELI 
LILLY has not resumed maintenance of or demonstrated that it is maintaining.

(b)    ELI LILLY shall keep CUBIST currently advised as to the status of all 
patents and patent applications which relate to Patents and to supply CUBIST 
promptly with copies of all patents, patent applications, substantive patent 
office actions, substantive responses received or filed in connection with 
such applications.  CUBIST may itself or through its attorney offer comments 
and suggestions with respect to the matters that are the subject of this 
Article 8.06, and ELI LILLY agrees to consider carefully such comments and 
suggestions; however, nothing herein shall obligate ELI LILLY to follow such 
comments or suggestions.

(c)    ELI LILLY shall notify CUBIST of their intention to abandon a patent 
or patent application which relates to Patents (either a total series of 
Patents or patent applications or on a country by country basis). At CUBIST's 
option, CUBIST may maintain such patent or patent application relating to 
Patent that ELI LILLY plans to abandon either a total series of Patents or 
patent applications or on a country by country basis) at CUBIST's sole 
expense, and CUBIST shall receive title to such patent or patent application 
and such patent shall no longer then be considered a Patent for purposes of 
this Agreement.

8.06   CUBIST shall take all steps necessary to maintain its patents and 
patents relating to Compound in the Field, including without limitation the 
preparation, filing and prosecution of new patent applications through 

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -20-

<PAGE>

an attorney of its choice, provided that a copy of any new patent 
applications relating to Compound in the Field, to be filed by CUBIST or a 
sub-licensee of CUBIST, will be supplied to ELI LILLY at least thirty (30) 
days prior to the filing date of such patent application.

       CUBIST shall keep ELI LILLY currently advised as to the status of all 
patents and patent applications which relate to patents filed by CUBIST in 
the Field and to supply ELI LILLY promptly with copies of all patents, patent 
applications, patent office actions, responses and other papers received or 
filed in connection with such applications.  ELI LIILLY may itself or through 
its attorney offer the other comments and suggestions with respect to the 
matters that are the subject of this Article 8.06, and CUBIST agrees to 
consider carefully such comments and suggestions, however, nothing herein 
shall obligate CUBIST to follow such comments or suggestions.


                                    Article 9
                                   Assignment

9.00   Neither party may assign or delegate any of its rights or duties under 
this Agreement without the prior written consent of the other, except that 
either party may assign this Agreement to a person or party that has 
purchased or succeeded to all or substantially all of the business and assets 
of the assignor to which the Agreement relates, and that has assumed in 
writing or by operation of law such party's obligations under this Agreement, 
provided that CUBIST shall be permitted to sub-license its rights hereunder 
as provided under Section 2.01 above.  This Agreement shall inure to the 
benefit of, and shall be binding upon, the parties hereto and their 
respective successors and assigns insofar as this Agreement is assignable.  
The assignor of this Agreement shall guarantee the performance of the 
obligation of this Agreement by such successor or assigns.  Nothing herein is 
intended to confer on any person other than the parties hereto or their 
respective successors and assigns any rights, remedies, obligations, or 
liabilities under or by reason of this Agreement.

                                      -21-

<PAGE>

                                   Article 10
                              Term And Termination

10.00  The term of this Agreement shall be for the period commencing as of 
the Effective Date and ending on the later of [         ]* unless and until 
earlier terminated as provided in this Article.  Upon the expiration of this 
Agreement, CUBIST shall retain a fully paid-up, royalty free license under 
the Know-How for purposes consistent with this Agreement and limited to use 
in the Field.

10.01  If either party defaults in the performance of its material 
obligations hereunder, including but not limited to CUBIST's failure to use 
commercially reasonable efforts to develop Compound (provided, however, that 
this shall not be construed as a guarantee that any Compound will be 
successfully developed), and if any such default is not corrected within 
[         ]* after it shall have been called to the attention of the 
defaulting party, in writing, by the other party, then the other party, at 
its option, may, in addition to any other remedies it may have, thereupon 
terminate this Agreement by giving written notice of termination to the 
defaulting party.

10.02  This Agreement may be terminated by either party, on notice, (i) upon 
the institution by the other party of insolvency, receivership or bankruptcy 
proceedings, (ii) upon the institution of such proceedings against the other 
party, which are not dismissed or otherwise resolved in such party's favor 
within sixty (60) days thereafter, and (iii) upon the other party's 
dissolution or ceasing to do business in the normal course.

10.03  CUBIST may terminate this Agreement at any time, upon thirty (30) days 
prior written notice to ELI LILLY and upon a reasonable determination by 
CUBIST that continued development of the Compound hereunder is not 
commercially reasonable.  [         ]*.

10.04  Termination of this Agreement for any reason shall not result in any 
obligation by ELI LILLY to repay any payments made to it by CUBIST prior to 
such termination.

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -22-

<PAGE>

10.05  Upon termination of this Agreement for any reason, the sub-licenses 
shall be automatically assigned to ELI LILLY, and ELI LILLY shall be bound by 
the terms of such sub-licenses provided that the sub-licensees continue to 
perform in accordance with their respective sublicense agreements. 
Notwithstanding the foregoing, ELI LILLY's obligations to any such 
sublicensee shall not be interpreted to extend beyond any obligations to 
CUBIST hereunder with respect to the subject matter of the sub-license.

10.06  Upon termination of this Agreement for any reason, except for 
termination caused by material breach by ELI LILLY, all licenses granted to 
CUBIST pursuant to Article 2 shall terminate, Cubist furthermore shall 
transfer to ELI LILLY all regulatory filings and regulatory correspondence, 
patent filings and patent office correspondence, any and all other clinical 
and non-clinical data, records and tabulations related to the Compound; and 
shall execute any and all documents of such patent offices and/or patent 
receiving offices, and/or regulatory agencies, including the US FDA, so as to 
allow ELI LILLY to make immediate use of such data, records, patent 
applications and/or patents and regulatory filings.  ELI LILLY shall not be 
obligated to treat such information received pursuant to this Section 10.06 
as Confidential Information and may use such information, data and know-how 
for any purpose at ELI LILLY's discretion.

       If CUBIST terminates this Agreement due to ELI LILLY's material 
breach, CUBIST's licenses pursuant to Article 2 shall continue for so long as 
CUBIST continues to fulfill their payment obligations pursuant to Articles 4 
and 5.

10.07  Termination of this Agreement for any reason shall not terminate the 
provisions set forth in Article 6 with respect to actions arising with 
respect to periods prior to termination, as well as Articles 7, 10, 13, 15, 
and 17 hereof The obligations of those Articles shall continue in full force 
and effect following any such termination.

10.08  Upon termination of this Agreement for any reason, neither party shall 
be relieved of obligations with respect to periods prior thereto, including 
any obligation to make payments, including but not limited to obligations 
pursuant to Articles 4, 5, 6 or 10, or reports regarding sale prior to such 
termination.

                                      -23-

<PAGE>

10.09  If CUBIST determines that it will not develop or market Compound in 
one or more countries, either by itself or through the efforts of a 
sublicensee, or if ELI LILLY makes written request to CUBIST to develop or 
sell Compound in one or more countries and in which countries CUBIST either 
by itself or through the efforts of a sublicensee, has taken no action, all 
rights including rights to develop, market and sell Compound in that 
country(ies) shall revert to ELI LILLY [         ]* after CUBIST receives 
written notice of ELI LILLY's intent to pursue those rights is received by 
CUBIST if CUBIST either by itself or through the efforts of a sublicensee, 
has taken no action toward such development or marketing prior to the end of 
that year.


                                   Article II
                                  Force Majeure

11.00  If the performance of this Agreement or any obligations hereunder, 
except the making of payments, is prevented, restricted or interfered with by 
reason of fire or other casualty or accident, earthquake, supplier delay, 
strikes or labor disputes, war or other violence, any law, order, 
proclamation, regulations, ordinance, demand or requirement of any government 
agency, or any other act or condition beyond the reasonable control of the 
parties hereto ("Event of Force Majeure"), the party so affected upon giving 
prompt notice to the other party shall be excused from such performance to 
the extent of such prevention, restriction, or interference; provided that 
the party so affected shall use its reasonable best efforts to avoid or 
remove such causes of nonperformance and shall continue performance hereunder 
with the utmost dispatch and that such party exercises due diligence to 
overcome such circumstances.

11.01  The party suffering an Event of Force Majeure shall notify the other 
party within fifteen (15) days of the occurrence of such Events of Force 
Majeure and within thirty (30) days shall furnish the other party with a 
recovery plan of action.  Without limiting the foregoing, a party suffering 
an Event of Force Majeure shall use its reasonable best efforts to limit the 
impact of the Event of Force Majeure on such party's performance of this 
Agreement.

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -24-

<PAGE>


                                   Article 12
                                     Notices

12.00  Any notice required or permitted to be given under this Agreement 
shall be in writing and shall be deemed to have been sufficiently given for 
all purposes five (5) days after having been mailed by first class certified 
or registered mail, postage prepaid or by fax which is confirmed by certified 
mail.  Unless otherwise specified in writing, the mailing addresses of the 
parties shall be as described below.

For ELI LILLY
       ELI LILLY & COMPANY
       Attn: Legal Division
       Lilly Corporate Center
       Indianapolis, Indiana 46285

For CUBIST:
       Mark Carthy
       Chief Business Officer
       Cubist Pharmaceuticals Incorporated
       24 Emily Street
       Cambridge, MA 02139

with a copy to:
       CUBIST's Legal Counsel:
       Michael Lytton
       Palmer & Dodge
       One Beacon Street
       Boston, MA 02108


                                   Article 13
                                  Governing Law

13.00  This Agreement shall be governed by and interpreted in accordance with 
the laws of the State of Indiana, United States of America, without reference 
to conflict of laws principles.

In the event of any action, controversy or claim arising out of or relating 
to any provision of this Agreement or the breach, termination or 
enforceability thereof, ELI LILLY and CUBIST shall make all efforts to settle 
those conflicts amicably between themselves.  Should they fail to 

                                      -25-

<PAGE>

agree, the parties may assert any remedy available at law or in equity to 
enforce its rights under this Agreement.


                                   Article 14
                                Partial Validity

14.00  If any provision of this Agreement shall be found or be held to be 
invalid or unenforceable by a court of competent jurisdiction in which this 
Agreement is being performed, then the meaning of said provision shall be 
construed, to the extent feasible, so as to render the provision enforceable, 
and if no feasible interpretation would save such provision, it shall be 
severed from the remainder of this Agreement, which shall remain in full 
force and effect.  In such event, the parties shall negotiate, in good faith, 
a substitute, valid and enforceable provision which most nearly effects the 
parties' intent in entering into this Agreement.


                                   Article 15
                                 Confidentiality

15.00  Except as otherwise provided in this Article 15, during the term of 
this Agreement and for a period of [         ]* the parties shall maintain 
the Confidential Information in confidence and use it only for purposes 
specifically authorized under this Agreement.  To the extent it is reasonably 
necessary or appropriate to fulfill its obligations or exercise its rights 
under this Agreement: (i) a party may disclose Confidential Information it is 
otherwise obligated under this Article 15 not to disclose to third parties, 
on a need-to- know basis and on condition that such entities or persons agree 
to keep the Confidential Information confidential for the same time periods 
and to the same extent as such party is required to keep the Confidential 
Information confidential hereunder; and (ii) a party may disclose such 
Confidential Information to government or other regulatory authorities as 
required by law or statute.  The parties hereto understand and agree that 
remedies at law may be inadequate to protect against any breach of any of the 
provisions of this Article 15 by either party or their employees, agents, 
officers or directors or any other person acting in concert with it or on its 
behalf Accordingly, each party shall be entitled to, but not limited to, the 
granting of injunctive relief by a court of competent Jurisdiction against 
any action that constitutes any such breach of this Article 15.

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -26-

<PAGE>

15.01  Notwithstanding the provisions of Section 15.00 above, CUBIST shall be 
free to make disclosures to third parties of Confidential Information of ELI 
LILLY consisting of data regarding the Compound in the Field under 
circumstances where, in CUBIST's reasonable business judgment, such 
disclosures will (i) further the development and commercialization of the 
Compound and (ii) not adversely affect any patent rights of ELI LILLY of 
which it is aware, provided, however, that in the case of (a) technical 
papers disclosing such Confidential Information, or (b) other disclosures 
where LILLY's name is used or would reasonably be implied from the context, 
CUBIST will provide a copy of the proposed paper or disclosure to ELI LILLY 
at least [         ]* in advance of publication and will not proceed with 
such publication or disclosure without the consent of ELI LILLY, which 
consent will not be unreasonably withheld; and further, provided, that in the 
case of all other written disclosures of Confidential Information, CUBIST 
will provide to ELI LILLY a copy of the material incorporating such 
disclosure as promptly as is practicable, and in no event later than one (1) 
week after the disclosure takes place.

15.02  ELI LILLY will make no public pronouncements referencing this 
Agreement or CUBIST without CUBIST's express written approval.  No license or 
rights are granted to either party to use the name of the other without 
express written approval.  CUBIST's first public announcement of this 
Agreement, attached hereto as Exhibit 4, may be released by CUBIST upon full 
execution of this Agreement.  Except as provided by Exhibit 4, CUBIST shall 
not release any information regarding the existence or terms of this 
Agreement that is not required by law.


                                   Article 16
                                Entire Agreement

16.00  The terms and conditions herein contained, including the Exhibits 
hereto, constitute the entire agreement and understanding of the parties 
relating to the subject matter of this Agreement and supersedes all previous 
communications, proposals, representations, and agreements, whether oral or 
written, relating to the subject matter of this Agreement.

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

*      Confidential Treatment requested:  material has been omitted and
       filed separately with the Commission.

                                      -27-

<PAGE>

No agreement or understanding varying or extending the same shall be binding 
upon either party hereto unless in a written document which expressly refers 
to this Agreement and which is signed by both parties to be bound thereby.


                                   Article 17
                                  Miscellaneous

17.00  It is understood and agreed that each party shall have the status of 
an independent contractor under this Agreement and that nothing in this 
Agreement shall be construed as authorization for either ELI LILLY or CUBIST 
to act as agent for the other.  Nothing contained herein or done in pursuance 
of this Agreement shall constitute either party the agent of the other party 
for any purpose or in any sense whatsoever, or constitute the parties as 
partners or joint venturers.

17.01  The failure of either party to enforce at any time any of the 
provisions of this Agreement, or the failure to require at any time 
performance by the other party of any of the provisions of this Agreement, 
shall in no way be construed to be a present or future waiver of such 
provisions, nor in any way affect the validity of either party to enforce 
each and every such provision thereafter.

17.02  The headings set forth at the beginning of the various Articles of 
this Agreement are for reference and convenience and shall not affect the 
meanings of the provisions of this Agreement.

17.03  During the term of this Agreement, ELI LILLY shall not, directly or 
indirectly through or in connection with any third party, conduct research, 
develop, make or market Compound for use in the Field.

17.04  This Agreement may not be amended, supplemented, or otherwise modified 
except by an instrument in writing signed by both parties.

                                      -28-

<PAGE>

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be 
signed in duplicate by duly authorized officers or representatives as of the 
date first above written.

ELI LILLY & COMPANY                    CUBIST PHARMACEUTICALS
                                       INCORPORATED

By:/s/ William R. Ringo                By:/s/ Mark Carthy
   --------------------------             ---------------------------
   William R. Ringo
   President, Infectious Diseases       Print name: Mark Carthy
                                                    --------------------
   Business Unit                        Title: Vice President and Chief
                                               ---------------------------
                                               Business Officer
                                               ---------------------------

                                      -29-

<PAGE>

                                             EXHIBIT 11 
                                   CALCULATION OF NET LOSS PER SHARE


<TABLE>
<CAPTION>
                                                                                            THREE MONTHS ENDED
                                                                                              SEPTEMBER 30,
                                                                                         ------------------------
<S>                                                                                      <C>             <C>
                                                                                             1997           1996
                                                                                         ------------    ----------
Beginning Balance June 30..............................................................     9,567,211     1,006,154
Issuance/Repurchase of Common Stock....................................................       817,575        (1,121)
Issuance of Cheap Stock................................................................       --            356,167
                                                                                         ------------    ----------
Weighted Average Shares at September 30................................................    10,384,786     1,361,200
Net Loss Third Quarter.................................................................    ($824,246)   ($1,155,375)
Net Loss per Share.....................................................................       ($0.08)        ($0.85)
                                                                                         ------------    ----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                            NINE MONTHS ENDED
                                                                                              SEPTEMBER 30,
                                                                                          ----------------------
<S>                                                                                       <C>            <C>
                                                                                             1997           1996
                                                                                          ----------     ----------
Beginning Balance January 1.............................................................   9,544,373      1,016,662
Issuance/Repurchase of Common Stock.....................................................     284,598         (9,594)
Issuance of Cheap Stock.................................................................      --            356,167
                                                                                          ----------     ----------
Weighted Average Shares at September 30.................................................   9,828,971      1,363,235
Net Loss................................................................................ ($4,615,367)   ($3,228,588)
Net Loss per Share......................................................................      ($0.47)        ($2.37)
                                                                                          ----------     ----------
</TABLE>
 

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<CIK> 0000912183
<NAME> CUBIST PHARMACEUTICALS
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JUL-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                       8,357,100
<SECURITIES>                                12,094,221
<RECEIVABLES>                                  111,000
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            15,466,246
<PP&E>                                       5,834,144
<DEPRECIATION>                             (2,454,054)
<TOTAL-ASSETS>                              24,542,043
<CURRENT-LIABILITIES>                        1,589,467
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        10,578
<OTHER-SE>                                  21,696,380
<TOTAL-LIABILITY-AND-EQUITY>                24,542,043
<SALES>                                              0
<TOTAL-REVENUES>                             2,081,267
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                             9,117,200
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                         (2,420,566)
<INCOME-PRETAX>                            (4,615,367)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (4,615,367)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (4,615,367)
<EPS-PRIMARY>                                    (.47)
<EPS-DILUTED>                                    (.47)
        

</TABLE>


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