COCENSYS INC
10-Q, 1998-05-15
PHARMACEUTICAL PREPARATIONS
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<PAGE>

                                   UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, DC  20549

                                     FORM 10-Q

(Mark One)

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
     For the quarterly period ended March 31, 1998

                                         OR
                                          
[ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934
     For the transition period from -------- to --------

                           Commission File Number 0-20954


                                   COCENSYS, INC.
                (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

           DELAWARE                                          33-0538836
     (STATE OR OTHER JURISDICTION OF                     (I.R.S. EMPLOYER
       INCORPORATION OR ORGANIZATION)                   IDENTIFICATION NO.)

                      201 TECHNOLOGY DRIVE, IRVINE, CA  92618
            (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES, INCLUDING ZIP CODE)
                                          
                                   (949) 753-6100
                (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)

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

                         Yes  X    No  
                            ------     -------
Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

          $.001 PAR VALUE                               22,972,700
       (CLASS OF COMMON STOCK)                 (OUTSTANDING AT MAY 8, 1998)


<PAGE>

                                   COCENSYS, INC.
                                          
                                 TABLE OF CONTENTS
                                          
                                                               PAGE NUMBER

PART I.   FINANCIAL INFORMATION
     
     ITEM 1.   FINANCIAL STATEMENTS.
     
               Condensed Balance Sheets as of March 31, 1998
               and December 31, 1997                                   3
     
               Condensed Statements of Operations for the 
               three-month periods ended March 31, 1998 and 1997 
               and the period from inception (February 15, 1989) 
               through March 31, 1998                                  4
     
               Condensed Statements of Cash Flows for the 
               three-month periods ended  March 31, 1998 and 1997 
               and the period from inception (February 15, 1989) 
               through March 31, 1998                                  5
     
               Notes to Condensed Financial Statements                 6
     
     
     ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
               CONDITION AND RESULTS OF OPERATIONS.                   11
     
     
PART II.  OTHER INFORMATION
     
     ITEM 6.   EXHIBITS AND REPORTS ON FORM 8-K.                      16
 
 
SIGNATURES                                                            17


                                       2

<PAGE>

                                   COCENSYS, INC.
                           (A development stage company)
                                          
                              CONDENSED BALANCE SHEETS
                 (In thousands, except share and par value amounts)
                                          

<TABLE>
<CAPTION>
                                                     MARCH 31,                DECEMBER 31,
                                                       1998                       1997
                                                     --------                 -----------
                                                    (Unaudited)
<S>                                                 <C>                       <C>
ASSETS
Current assets:
  Cash and cash equivalents                          $  1,208                  $  3,410
  Short-term investments                               12,724                     9,050
  Receivables from corporate partners                      65                       414
  Other current assets                                    549                       484
                                                     --------                  --------
TOTAL CURRENT ASSETS                                   14,546                    13,358

Property and equipment, net                             2,822                     2,823
Investments                                               500                       500
Other assets, net                                         217                       235
                                                     --------                  --------
                                                   $   18,085                 $  16,916
                                                     --------                  --------
                                                     --------                  --------

LIABILITIES & STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable                                 $      407                 $     866
  Other accrued liabilities                               966                     1,911
  Accrued compensation and benefits                       558                     1,107
  Deferred revenue                                      1,725                         -
  Due to corporate partners                             1,699                       747
  Capital lease obligation -- current portion             411                       353
                                                     --------                  --------
TOTAL CURRENT LIABILITIES                               5,766                     4,984

Capital lease obligation, less current portion            493                       567
Other liabilities                                         532                       534

Commitments and contingencies

Stockholders' equity:
  Preferred stock -- $.001 par value,
    5,000,000 shares authorized; 300,000 shares
    issued and outstanding at March 31, 1998
    and 214,286 at December 31, 1997                   16,566                    13,000
  Common stock -- $.001 par value,
    75,000,000 shares authorized; 22,934,825 shares 
    issued and outstanding at March 31, 1998 and 
    22,857,506 at December 31, 1997                    97,441                    97,230
Deficit accumulated during the development stage     (102,310)                  (98,983)
Deferred compensation                                    (386)                     (430)
Accumulated comprehensive income                          (17)                       14
                                                     --------                  --------
TOTAL STOCKHOLDERS' EQUITY                             11,294                    10,831
                                                     --------                  --------
                                                  $    18,085                 $  16,916
                                                     --------                  --------
                                                     --------                  --------
</TABLE>

                           See accompanying notes.

                                       3

<PAGE>

                                         
                                   COCENSYS, INC.
                           (A development stage company)
                                          
                         CONDENSED STATEMENTS OF OPERATIONS
                      (In thousands, except per share amounts)
                                    (Unaudited)

                                          
<TABLE>
<CAPTION>

                                                                                        PERIOD FROM
                                                                                         INCEPTION
                                                                                        (FEBRUARY 15,
                                                          THREE MONTHS ENDED               1989) TO
                                                             MARCH 31,                   MARCH 31,
                                                    1998                 1997               1998
                                                  -------              --------         -------------
<S>                                               <C>                  <C>              <C>
REVENUES
  
 Co-promotion revenues from corporate partners     $  540              $  1,123           $ 30,705
 Co-development revenues from corporate partners      596                   702             17,289
                                                  -------              --------         ----------
Total revenues                                      1,136                 1,825             47,994
                                                  -------              --------         ----------

OPERATING EXPENSES
  
 Research and development                           3,359                 5,432             94,288
  
 Marketing, general and administrative              1,148                 2,679             49,304
 Acquired research and development and
   advances to Acea                                     -                     -             14,879
                                                  -------              --------         ----------
Total operating expenses                            4,507                 8,111            158,471
                                                  -------              --------         ----------

OPERATING LOSS                                     (3,371)               (6,286)          (110,477)

Gain on disposition of sales division                   -                     -              4,728
Interest income                                       202                   219              4,655
Interest expense                                      (24)                  (14)            (1,082)
                                                  -------              --------         ----------

NET LOSS                                           (3,193)               (6,081)          (102,176)

Dividends on preferred stock                          134                     -                134
                                                  -------              --------         ----------

NET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS    $  (3,327)            $  (6,081)        $ (102,310)
                                                  -------              --------         ----------
                                                  -------              --------         ----------

Basic and fully-diluted loss per common share   $   (0.15)            $   (0.27)
                                                  -------              --------
                                                  -------              --------
Shares used in computing net loss per share        22,891                22,251
                                                  -------              --------
                                                  -------              --------
</TABLE>

                                  See accompanying notes.


                                       4

<PAGE>


                                   COCENSYS, INC.
                           (A development stage company)
                                          
                         CONDENSED STATEMENTS OF CASH FLOWS
                                   (In thousands)
                                    (Unaudited)

<TABLE>
<CAPTION>

                                                                                   PERIOD FROM
                                                                                     INCEPTION
                                                                                   (FEBRUARY 15,
                                                  THREE MONTHS ENDED                 1989) TO
                                                      MARCH 31,                     MARCH 31,
                                                1998          1997                    1998
                                               ------        -----                --------------
<S>                                            <C>           <C>                  <C>
OPERATING ACTIVITIES
Net loss                                       $  (3,193)    $  (6,081)           $  (102,176)
Adjustments to reconcile net loss
 to net cash used in operating activities:
  Depreciation and amortization                      212           267                  7,037
  Amortization of deferred compensation               42            74                  3,649
  Issuance of stock and warrants for services        185             -                  2,521
  Loss on sale of fixed assets                         -             -                    100
  Gain on disposition of sales force                   -             -                 (4,728)
  Acquired research and development                    -             -                 12,279
  Decrease (increase) in other current assets        (60)          114                   (616)
  Decrease (increase) in receivable
    from corporate partner                           349            27                    (65)
  Increase (decrease) in advances
    from corporate partners                          952          (347)                 1,699
  Increase (decrease) in accounts payable
    and other accrued liabilities                   (284)         (665)                 2,482
                                                 -------        ------             ----------
NET CASH USED IN OPERATING ACTIVITIES             (1,797)       (6,611)               (77,818)
                                                 -------        ------             ----------

INVESTING ACTIVITIES
Decrease (increase) in short-term investments     (3,700)        5,830                (12,736)
Purchase of property and equipment                  (211)         (238)                (7,311)
Increase in other assets and notes receivable
    from officers                                     18           (77)                (1,373)
Cash received on sale of fixed assets                  -             -                     20
Cash received on disposition of sales division         -             -                  8,000 
Purchase of investments                                -             -                   (500)
Increase in deferred costs                             -             -                 (2,475)
Acquisition of Acea Pharmaceuticals,
    net of cash acquired                               -             -                    (62)
                                                 -------        ------             ----------
NET PROVIDED BY (CASH USED) IN INVESTING
   ACTIVITIES                                     (3,893)        5,515                (16,437)
                                                 -------        ------             ----------

FINANCING ACTIVITIES
Net cash proceeds from issuance of common stock       25         2,115                 61,270
Net cash proceeds from issuance of
   preferred stock                                 3,429             -                 32,810
Proceeds from sale/leaseback of fixed
   assets and notes payable                          106           334                  5,341
Payments on capital lease obligations
   and notes payable                                 (72)         (208)                (3,958)
                                                 -------        ------             ----------

NET CASH PROVIDED BY FINANCING ACTIVITIES          3,488         2,241                 95,463
                                                 -------        ------             ----------
NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                               (2,202)        1,145                  1,208
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD   3,410         1,050                      -
                                                 -------        ------             ----------
CASH AND CASH EQUIVALENTS AT END OF PERIOD     $   1,208     $   2,195             $    1,208
                                                 -------        ------             ----------
                                                 -------        ------             ----------

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest                         $      24     $      14             $      844
                                                 -------        ------             ----------
                                                 -------        ------             ----------

</TABLE>

                              See accompanying notes.


                                       5


<PAGE>

                                   COCENSYS, INC.
                             (A development stage company)
                                    MARCH 31, 1998
                                      (UNAUDITED)
                                          
                                          
1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Basis of Presentation

     The interim financial information for the three-month periods ended 
     March 31, 1998 and 1997 is unaudited but includes all adjustments 
     (consisting only of normal recurring entries) which the Company's 
     management believes to be necessary for the fair presentation of the 
     financial position, results of operations and cash flows for the periods 
     presented.  The accompanying interim financial statements should be read 
     in conjunction with the financial statements and related notes included 
     in the Company's 1997 Annual Report on Form 10-K for the year ended 
     December 31, 1997. Certain information and footnote disclosures normally 
     included in financial statements prepared in accordance with generally 
     accepted accounting principles have been condensed or omitted pursuant 
     to Securities and Exchange Commission rules and regulations.  Interim 
     results of operations for the three-month period ended March 31, 1998, 
     are not necessarily indicative of operating results to be expected for 
     the full year.

     REVENUE AND EXPENSE RECOGNITION
     
     See Notes 2, 3, 4, 5 and 6 for revenue recognition policies related to
     co-promotion and co-development revenues from corporate partners. 

     NET LOSS PER SHARE

     In 1997, Statement of Financial Accounting Standards No. 128, "Earnings per
     Share" ("SFAS 128"), replaced the calculation of primary and fully diluted
     earnings per share with basic and diluted earnings per share.  Unlike
     primary earnings per share, basic earnings per share excludes any dilutive
     effect of options, warrants and convertible securities.  All per share
     amounts for all prior periods have been presented and, where appropriate,
     restated to conform to the SFAS 128 requirements.

     Both basic and diluted loss per share are computed using the weighted
     average number of shares of common stock outstanding.  Common equivalent
     shares from stock options, warrants and convertible securities are excluded
     from the computation of diluted earnings per share, as their effect would
     be antidilutive.
     
     COMPREHENSIVE INCOME
     
     As of January 1, 1998, the Company adopted Statement of Financial
     Accounting Standards No. 130, "Reporting Comprehensive Income" (SFAS 130).
     SFAS 130 establishes new rules for the reporting and display of
     comprehensive income and its components; however, the adoption of this
     Statement had no impact on the Company's net income or stockholders'
     equity.  SFAS 130 requires unrealized

                                       6


<PAGE>

                                     COCENSYS, INC.
                             (A development stage company)

                        NOTES TO CONDENSED FINANCIAL STATEMENTS

     gains and losses on available-for-sale securities, which prior to
     adoption were reported separately on shareholders' equity, to be
     included in other comprehensive income.  Prior financial statements
     have been restated to conform to the requirements of SFAS 130.
     
     The components of comprehensive loss are as follows (in thousands):


<TABLE>
<CAPTION>

                                                                           PERIOD FROM
                                                                            INCEPTION
                                                                          (FEBRUARY 15,
                                                THREE MONTHS ENDED           1989) TO
                                                      MARCH 31,              MARCH 31,
                                                1998           1997            1998
                                               ------         ------       -------------
<S>                                            <C>            <C>          <C>
     Net loss                                  $ (3,193)      $ (6,081)    $  (102,176)
     Unrealized gain (loss) on investments          (31)           (40)            (17)
                                               --------       --------     -----------
     Comprehensive loss                        $ (3,224)   $    (6,121)   $  (102,193)
                                               --------       --------     -----------
                                               --------       --------     -----------
</TABLE>
     
     The components of accumulated comprehensive gain (loss) are as follows (in 
thousands):
     

<TABLE>
<CAPTION>
     
                                                MARCH 31,              DECEMBER 31,
                                                  1998                     1997
                                                --------               -------------
<S>                                             <C>                    <C>
     Unrealized gain (loss) on investments          (17)                      14
                                               --------                ---------
     Accumulated comprehensive gain (loss)      $   (17)               $      14
                                               --------                ---------
                                               --------                ---------
</TABLE>


PENDING ADOPTION OF FINANCIAL ACCOUNTING STANDARDS NO. 131

     In June 1998, the Financial Accounting Standards Board will issue Financial
     Accounting Standards No. 131, "Disclosures about Segments of and Enterprise
     and Related Information" (SFAS 131).  SFAS 131 establishes standards for
     the way that public business enterprises report information about segments
     in annual financial statements and requires that those enterprises report
     selected information about operating segments in interim financial reports.
     SFAS 131 also establishes standards for related disclosures about products
     and services, geographic areas and major customers.  SFAS 131 is effective
     for financial statements for fiscal years beginning after December 15,
     1997, and therefore the Company will adopt the new requirements effective
     with filing of the Annual Report on Form 10-K for the year ended December
     31, 1998.  Management has not completed its review of SFAS 131, but does
     not expect that it will have an impact on the Company's results of
     operations, financial position or cash flows.
     
     
2.   DISPOSITION OF SALES AND MARKETING DIVISION
     
     On October 8, 1997, the Company entered into an Asset Purchase Agreement
     (the "Agreement") to sell its sales and marketing division (the "Division")
     to Watson Laboratories, Inc. ("Watson"), a wholly owned subsidiary of
     Watson Pharmaceuticals, Inc.  Under the terms of the Agreement,


                                       7

<PAGE>

                                   COCENSYS, INC.
                             (A development stage company)

                        NOTES TO CONDENSED FINANCIAL STATEMENTS


     Watson assumed the Division's co-promotion agreements, acquired certain 
     of its operating assets and obtained the right to hire approximately 70 
     employees of the Division.  As consideration for these assets, the 
     Company received $8.0 million from Watson in October 1997 with up to 
     $1.0 million more due to the Company if Watson retains, as of specified 
     future dates, certain percentages of the employees from the Division.  
     Pursuant to this contingency arrangement, in April 1998, Watson paid 
     CoCensys $750,000.  An additional $250,000 is due to CoCensys in October 
     1998 if certain retention percentages are met at that time.
     
     In order to satisfy certain provisions of the Agreement, the Company
     entered into, and transferred to Watson, agreements with two pharmaceutical
     companies for marketing rights and NDAs for two drugs with an aggregate
     cost of $2.0 million, of which the Company paid $1.0 million in October
     1997.  An additional $1.0 million is payable by the Company in future
     installments.  Pursuant to the Agreement, $1.0 million of the $8.0 million
     in proceeds from the sale of the Division was deposited into an escrow
     account to satisfy the Company's future obligations related to the
     acquisition of these marketing rights and NDAs.


3.   DEVELOPMENT AND COMMERCIALIZATION AGREEMENT WITH WYETH-AYERST LABORATORIES
     
     In May 1997, the Company entered into a development and 
     commercialization agreement for Co 2-6749, its lead anxiolytic compound, 
     with the Wyeth-Ayerst Laboratories Division ("Wyeth-Ayerst") of American 
     Home Products Corporation ("AHP").  Under the terms of the agreement, 
     Wyeth-Ayerst paid CoCensys a non-refundable  $5.0 million licensing fee 
     and AHP paid $5.0 million to purchase 100,000 shares of the Company's 
     Series C Convertible Preferred Stock.  Additionally, CoCensys will 
     receive specified milestone payments dependent upon the achievement of 
     key development events and $750,000 per quarter for up to three years to 
     identify back-up compounds. However, if Co 2-6749 fails to meet certain 
     criteria, and the back-up program fails to produce a back-up compound 
     that meets other certain criteria, Wyeth-Ayerst has the right to 
     terminate the back-up program and require CoCensys to reimburse them for 
     a portion of the back-up funding. Accordingly, a portion of the back-up 
     program funding has been recorded as deferred revenue and will be 
     recognized as revenue when Co 2-6749 or a back-up compound meets 
     applicable criteria for acceptance by Wyeth-Ayerst.
     
     Wyeth-Ayerst is responsible for the costs associated with developing Co 
     2-6749.  The Company and Wyeth-Ayerst will co-promote any resulting 
     product in certain market segments in the United States, while 
     Wyeth-Ayerst will have rights to develop, register and market any drugs 
     derived from the collaboration in the rest of the world, subject to 
     royalty obligations to CoCensys.  The preferred stock is convertible 
     into common stock after May 12, 1999, at a conversion price based on the 
     market price of the common stock at that time (subject to certain 
     minimum and maximum limits).
     



                                       8
<PAGE>

                              COCENSYS, INC.
                       (A DEVELOPMENT STAGE COMPANY)
 
                  NOTES TO CONDENSED FINANCIAL STATEMENTS




4.   MARKETING AND DEVELOPMENT COLLABORATION WITH WARNER-LAMBERT COMPANY
     
     In October 1995, the Company entered into collaboration with Warner-Lambert
     Company ("Warner-Lambert") and its Parke-Davis division to develop and
     market therapeutic drugs for the treatment of certain central nervous
     system disorders.  This arrangement consists of the Research, Development
     and Marketing Collaboration Agreement (the "1995 Warner Collaboration
     Agreement"), for the worldwide development and commercialization of a new
     class of neurological and psychiatric drugs, termed subtype selective NMDA
     receptor antagonists ("SSNRAs"), and the Parke-Davis Promotion Agreement. 
     Pursuant to the Parke-Davis Promotion Agreement, the Company co-promoted
     Parke-Davis' central nervous system drug, Cognex-Registered Trademark-,
     until June 1997 when Parke-Davis terminated the co-promotion agreement.  In
     addition, in October 1997, the 1995 Warner Collaboration Agreement was
     mended and extended until at least October 1999 (the "amended Warner
     Collaboration Agreement").
          
     Under the amended Warner Collaboration Agreement, both companies share
     technology and resources to develop SSNRA candidates. Warner is obligated
     to pay for all costs to develop any development candidates arising from the
     Agreement, subject to CoCensys' right to re-engage in the development by
     funding a percentage of the development costs.  Warner is also obligated to
     pay for all costs to promote any product developed under the Warner
     Collaboration Agreement, subject to CoCensys' right to co-promote in the
     United States (including sharing of costs to promote) any product for which
     CoCensys re-engaged development rights.  CoCensys will receive royalties on
     sales of any products developed under the Warner Collaboration Agreement,
     at rates based in part upon whether CoCensys co-developed and co-promoted
     such product.  In addition, upon achievement of certain clinical
     development and regulatory milestones, Warner will make nonrefundable
     milestone payments to CoCensys.  Payments received under the amended Warner
     Collaboration Agreement are recognized as co-development revenues and
     payments made are recognized as expenses.
          
     Pursuant to the 1995 Warner Collaboration Agreement, Warner-Lambert
     purchased $2.0 million of CoCensys Common Stock in October 1995 and an
     additional $2.0 million of CoCensys Common Stock in March 1997.  
     
     In October 1997, in connection with the amended Warner Collaboration
     Agreement, Warner-Lambert purchased convertible preferred stock form the
     Company with a face value of $7.0 million. Warner-Lambert paid the Company
     $1.0 million of the $7.0 million total in October 1997 and $6.0 million in
     January 1998.  The Company allocated $1.6 million to be recognized as 
     co-development revenue during fiscal 1998, $4.4 million as preferred stock
     and $1.0 million as a liability (payable in common stock) due to Warner 
     Lambert in January 1999.  The preferred stock accrues a non-cash dividend
     at twelve percent per annum until its mandatory conversion date in October
     2001 and is convertible at the price of the common stock at the time of 
     conversion (subject to a limit on the maximum number of shares that may be 
      issued). The Company may elect to force conversion at an earlier date at
      a price equal to the greater of the then current price or the price when
      issued.

                                        9

<PAGE>

                              COCENSYS, INC.
                       (A DEVELOPMENT STAGE COMPANY)
 
                  NOTES TO CONDENSED FINANCIAL STATEMENTS



          
5.   DEVELOPMENT AND COMMERCIALIZATION AGREEMENT WITH G.D. SEARLE & CO.
          
     In May 1996, the Company entered into an agreement with G.D. Searle & Co.
     ("Searle") to co-develop and co-promote CCD 3693, the Company's lead
     compound for the treatment of insomnia along with its back-up compounds. 
     Pursuant to the agreement, Searle paid a $3.0 million license fee and
     purchased 100,000 shares of the Company's Series B Convertible Preferred
     Stock for $7.0 million.  The license fee was recognized as co-development
     revenue in 1996.  The preferred stock is convertible into common stock on
     May 17, 1998, at a conversion price of not less than $4.375 per share. 
          
     Under the agreement, both companies are obligated to pay a portion of the
     development costs of the compound and its back-up compounds.  In addition,
     the Company will receive nonrefundable milestone payments upon the
     occurrence of certain events in the development of the compound.  The
     parties will co-promote any products derived from the collaboration in the
     United States and share any profits proportionally, while Searle will have
     the right to develop, register and market the products in the rest of the
     world, subject to specified royalty payments.  
     
     
6.   PROMOTION AGREEMENT WITH SOMERSET PHARMACEUTICALS, INC.
     
     In January 1996, the Company and Somerset Pharmaceuticals, Inc.
     ("Somerset") entered into the Somerset Promotion Agreement, pursuant to
     which the Company, through its Sales Division, promoted Somerset's drug
     Eldepryl-Registered Trademark- to neurologists in the United States for the
     treatment of Parkinson's disease.  Effective January 1, 1997, the initial
     agreement was superseded by the 1997 Somerset Promotion Agreement.  Under
     the 1997 Somerset Promotion Agreement, CoCensys had the exclusive right to
     detail Eldepryl to certain neurologists and other physicians in the United
     States and was compensated based upon the number of details undertaken and
     gross sales of Eldepryl.  In October 1997 the Company sold its sales and
     marketing division, and all related co-promotion agreements, to Watson.  In
     March 1998, the Company received and recognized a $540,000 bonus for 1997
     sales of Eldepryl.  The Company does not expect to receive any more
     payments pursuant to the Somerset agreement.
     
     
7.   CYTOVIA LICENSING AGREEMENT
          
     In January 1998, the Company licensed certain non-core technology to
     Cytovia, Inc., a new company that will focus on the commercialization of
     patented drug screening technology, using living cells, in the area of
     apoptosis or programmed cell death.  In exchange, CoCensys received
     approximately 55% of the initial outstanding common stock of Cytovia, will
     be entitled to receive certain royalties and will retain certain rights
     relating to the development of future therapeutic agents for central
     nervous system disorders.  During the first quarter, CoCensys advanced
     funds and provided certain administrative services to Cytovia during
     Cytovia's initial start-up period.  Cytovia received venture funding in
     March 1998 and is now refunding to CoCensys the advanced funds.  CoCensys'
     interest in Cytovia is less than 20 percent and is accounted for on a cost
     basis.

                                   10

<PAGE>


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

     EXCEPT FOR THE HISTORICAL INFORMATION CONTAINED HEREIN, THE FOLLOWING
     DISCUSSION CONTAINS FORWARD-LOOKING STATEMENTS THAT INVOLVE RISKS AND
     UNCERTAINTIES.  THE COMPANY'S ACTUAL RESULTS COULD DIFFER MATERIALLY. 
     FACTORS THAT COULD CAUSE OR CONTRIBUTE TO SUCH DIFFERENCES INCLUDE, BUT ARE
     NOT LIMITED TO, THOSE DISCUSSED BELOW AND IN THE COMPANY'S 1997 ANNUAL
     REPORT ON FORM 10-K.

     OVERVIEW
          
     CoCensys, Inc. is a biopharmaceutical company dedicated to the discovery,
     development, marketing and sales of small molecule drugs to treat
     neurological and psychiatric disorders.  The Company's product discovery
     and development programs are focused on the exploration of novel receptors
     and enzymes and their ligands and inhibitors through three technology
     platforms: GABAA receptor modulators named Epalons; glutamate receptor
     antagonists; and sodium channel blockers.

     Since its inception in February 1989, the Company has devoted 
     substantially all of its resources to the discovery and development of 
     neuropharmaceutical products for the treatment of disorders affecting 
     the central nervous system.  The Company has incurred losses since 
     inception and expects losses to continue for the foreseeable future, 
     primarily due to the expansion of programs for research and development. 
     Operating results are expected to fluctuate as a result of uncertainty 
     in the timing and amount of revenues to be earned from achievement of 
     research and development milestones, and uncertainty in the timing and 
     amount of expenses for product development, including clinical trials.  
     As of March 31, 1998, the Company's accumulated deficit was 
     approximately $102.3 million.

     RESULTS OF OPERATIONS

     The Company recognized $540,000 in co-promotion revenues for the 
     three-month period ended March 31, 1998, compared to $1.1 million during 
     the same period in fiscal 1997. The 1998 co-promotion revenue is 
     attributable to a bonus for fiscal 1997 activity that was received and 
     recognized in March 1998. In October 1997, the Company sold its sales and
     marketing division to Watson Pharmaceuticals, Inc. ("Watson") and is no 
     longer involved in co-promotional activities. 

     The Company recognized $596,000 in co-development revenues for the 
     three-month period ended March 31, 1998 compared to  $702,000 for the 
     same period of 1997.  In the first quarter of 1998, co-development revenues
     were associated with the SSNRA (subtype-selective NMDA receptor 
     antagonists) program with Warner-Lambert.  In 1997, co-development 
     revenues related to the ongoing CCD 3693 program for insomnia with 
     G.D. Searle and the licostinel (ACEA 1021) program for stroke and traumatic
     brain injury with Novartis, which was terminated in April 1997.

     Research and development expenses decreased to $3.4 million for the 
     three-month period ended March 31, 1998, from $5.4 million in the first 
     quarter of the prior year.  Of this $2.0 million decrease, approximately
     $700,000 relates to cost savings from internal restructuring during the 
     prior year and $1.3 million reflects a lower level of external clinical 
     activity in the current period.  In the first quarter of 1997, the Company
     had ongoing clinical trials of licostinel (ACEA 1021) in the 


                                        11

<PAGE>


     treatment of stroke and of ganaxolone (CCD 1042) in the treatment of 
     migraine and epilepsy.  While there were no large clinical trials underway
     during the first quarter of 1998, the Company expects to commence a major
     Phase IIb clinical trial of ganaxolone in the treatment of migraine during
     the second quarter of 1998.

     Marketing, general and administrative expense decreased to  $1.1 million in
     the first quarter of 1998 from $2.7 million in the first quarter of 1997,
     primarily as a result of selling the sales and marketing division.  
     Results for the first quarter of 1998 exclude the cost of the sales and
     marketing division.

     Interest income was $202,000 for the three-month period ended March 31,
     1998 compared to $219,000 for the same quarter in 1997.  The decrease was
     due to lower cash and short-term investment balances in the first quarter
     of the current year when compared to the same quarter a year earlier. 


     LIQUIDITY AND CAPITAL RESOURCES
     
     From its inception in February 1989 through March 31, 1998, the Company has
     financed its operations primarily through private and public offerings of
     its equity securities, raising net proceeds of approximately $94.1 million
     through sales of securities.  At March 31, 1998, the Company's balances of
     cash, cash equivalents and investments totaled $14.4 million, compared to
     $13.0 million at December 31, 1997. 
     
     As of March 31, 1998, the Company had invested $7.3 million in leasehold
     improvements, laboratory and computer equipment and office furnishings and
     equipment.  The Company has financed $3.5 million of these capital
     additions through capital lease lines.  In addition, the Company leases its
     laboratory and office facilities under operating leases.  While additional
     equipment will be needed as the Company increases its research and
     development activities, the Company has no material commitments for the
     acquisition of property and equipment.
     
     Pursuant to an agreement with Watson, in October 1997, the Company sold it
     sales and marketing division, related co-promotion agreements and certain
     other assets to Watson for $8.0 million in cash with an additional $1.0
     million due to CoCensys contingent upon the occurrence of specified events.
     Of this contingent amount, Watson paid the Company $750,000 was in April
     1998 with the balance due in October 1998 subject to the occurrence of
     specified events.  
     
     Pursuant to the 1995 collaboration agreement with Warner-Lambert Company,
     as amended and extended in October 1997, Warner-Lambert is obligated to
     make certain milestone payments for each compound selected for development,
     as well as pay for its share of development costs.  Under the terms of the
     1995 agreement, Warner-Lambert purchased $2.0 million of CoCensys Common
     Stock in October 1995 and an additional $2.0 million of CoCensys Common
     Stock in March 1997.  Under the terms of the 1997 amendment, Warner-Lambert
     purchased preferred stock with a face value of $7.0 million, of which
     Warner-Lambert paid the Company $1.0 million in October 1997 and $6.0
     million in January 1998.  Of this $7.0 million in total proceeds, the
     Company has allocated $1.6 million to be recognized as co-development
     revenue during fiscal 1998, $4.4 million as preferred stock and $1.0
     million as a liability (payable in common stock) due to Warner Lambert in
     January 


                                         12

<PAGE>

     1999.  The preferred stock accrues a non-cash dividend at 12 percent per 
     annum until its mandatory conversion date in October 2001. Pursuant to 
     the May 1997 Development and Commercialization Agreement with 
     Wyeth-Ayerst, Wyeth-Ayerst paid the Company a $5.0 million license fee 
     and purchased 100,000 shares of the Company's Series C Convertible 
     Preferred stock for $5.0 million.  Furthermore, Wyeth-Ayerst is 
     obligated to pay all development costs associated with Co 2-6749, as 
     well as make milestone payments upon the occurrence of certain agreed 
     upon events and pay the Company $3.0 million per year for up to three 
     years to identify back-up compounds.  However, if Co 2-6749 fails to 
     meet certain criteria, and the back-up program fails to produce a 
     back-up compound that meets other certain criteria, Wyeth-Ayerst has the 
     right to terminate the back-up program and require CoCensys to reimburse 
     them for a portion of the back-up funding.
     
     Pursuant to the Development and Commercialization Agreement G.D. Searle &
     Co., both companies are obligated to pay a portion of the development costs
     of CCD 3693 and its back-up compounds for the U.S. market.  The Company
     will receive nonrefundable milestone payments upon the occurrence of
     certain events in the development of the compound.  In addition, Searle
     purchased 100,000 shares of the Company's Series B Convertible Preferred
     Stock for $7.0 million during 1996.  This preferred stock will convert to
     common stock on May 15, 1998.
     
     CoCensys' operations to date have consumed substantial amounts of cash. 
     The negative cash flow from operations is expected to continue and will
     likely increase over the foreseeable future, subject to the Company's
     ability to mitigate such negative cash flows with revenues, if any, derived
     from the sale of products from current and potential future marketing
     collaborations.  The Company anticipates that its existing capital
     resources, including funding expected to be available through current
     partner collaborations, will be adequate to satisfy its capital needs for
     at least the next 12 months.
     
     The Company will need to obtain substantial additional funds to conduct the
     costly and time-consuming research, preclinical development and clinical
     trials necessary to bring its products to market.  The Company intends to
     seek additional funding through additional research and development
     collaborations with suitable corporate partners and/or through public or
     private financing.  There can be no assurance that additional financings or
     suitable collaborations will be available on favorable terms, if at all. 
     Insufficient funds may require the Company to delay, scale back or
     eliminate some or all of its research and product development programs or
     to license third parties to commercialize products or technologies that the
     Company would otherwise seek to develop itself. 
     
     The Company's future capital requirements will depend on many factors,
     including the progress of the Company's research and development programs,
     the scope and results of preclinical testing and clinical trials, the time
     and costs involved in obtaining regulatory approvals, the rate of
     technological advances, determinations as to the commercial potential of
     the Company's products under development, the status of competitive
     products, the establishment of third-party manufacturing arrangements and
     the establishment of additional collaborative relationships. 
     
     
                                           13

<PAGE>

     IMPACT OF YEAR 2000
     
     Some of the Company's older computer programs were written using two digits
     rather than four to define the applicable year.  As a result, those
     computer programs recognize a date using "00" as the year 1900 rather than
     the year 2000.  This could cause a system failure or miscalculations
     causing disruptions of operations, including a temporary inability to
     process transactions or engage in normal business activities.
     
     The Company has completed a preliminary assessment and will have to modify
     or replace portions of its software and hardware so that its computer
     systems will function properly with respect to dates in the year 2000 and
     thereafter.  However, the majority of software and hardware used by the
     Company consists of commercially available, off-the-shelf programs and
     equipment that have already been modified, or are soon to be modified, by
     their manufacturers to handle the year 2000 correctly.  As such, management
     believes that the year 2000 issue does not pose a significant problem for
     the Company and it is expected that this project will be completed not
     later than December 31, 1998 at a total cost of less than $50,000.  The
     Company has incurred minimal costs to date.  However, if such modifications
     and conversions are not made, or are not completed timely, the year 2000
     issue could have a material impact on the operations of the Company.  
     
     
     ADDITIONAL RISKS
     
     In addition to those discussed above, the Company is subject to the
     following risks:
     
     The Company's products are in an early stage of development and face a high
     degree of technological, regulatory and competitive risks.  Drug discovery
     and development are capital intensive activities, and there can be no
     assurance the Company will be able to raise the additional capital
     necessary to develop and commercialize products.  The Company's strategy
     for the development, clinical testing and commercialization of its products
     includes entering into various collaborations with corporate partners,
     licensors, licensees and others.  There can be no assurance that the
     Company will be able to negotiate further collaborative arrangements on
     acceptable terms, if at all, or that the current collaborative efforts will
     be successful.  Human clinical trials require considerable time and
     funding, and results from any stage of testing may not predict results of
     later stages.  In addition, if results of any clinical trial fail to meet
     the Company's requirements, the study plan for such compound may be
     adjusted or another compound may be substituted, either of which may result
     in delays in future clinical studies.  Unfavorable clinical trials could
     result in cancellation of future clinical studies.  Inherent in the fact
     that CoCensys is an early stage biopharmaceutical company are a range of
     additional risks, including those associated with obtaining and enforcing
     patents and protecting proprietary technology and the risk of regulatory
     change, among others.
     
     The securities markets have from time to time experienced significant price
     and volume fluctuations that may be unrelated to the operating performance
     of particular companies.  The market prices of the common stock of many
     publicly traded biopharmaceutical companies have in the past been, and can
     in the future be expected to be, especially volatile due to various
     external factors, including but not limited to, announcements of
     technological innovations or new products by the Company or its
     competitors, developments or disputes concerning patents or proprietary
     rights, publicity regarding actual or 


                                      14
<PAGE>

     potential results relating to  products under development, regulatory 
     developments in both the United States and foreign countries and public 
     concern as to the safety of  biotechnology products.
     

                                       15

<PAGE>


                                   COCENSYS, INC.


PART II.  OTHER INFORMATION

     ITEM 6.   EXHIBITS AND REPORTS ON FORM 8-K

               (a)   Exhibits
                     10.1 *    CoCensys, Inc. Executive Officers' Severance 
                               Benefit Plan
                     10.2 **   Agreement dated January 8, 1998, between 
                               CoCensys, Inc. and Warner-Lambert Company
                     10.3 *    CoCensys, Inc. Executive Officers' Change of 
                               Control Severance Plan
                     27        Financial Data Schedule

                     *         Compensatory Plan.
                     **        Confidential treatment requested with the SEC 
                               over portions of this Exhibit.


               (b)   No reports on Form 8-K were filed during the quarter
                     ended March 31, 1998.

     
                                         16

<PAGE>
     
                                
                                   COCENSYS, INC.
                                          
                                          
                                     SIGNATURES
                                          
                                          
                                          

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




                                                      CoCensys, Inc.



   Date:  May 12, 1998                     By:  /s/ F. Richard Nichol, Ph.D.
          -------------                         ------------------------------
                                                     F. Richard Nichol, Ph.D.
                                           President and Chief Executive Officer
                                                (PRINCIPAL EXECUTIVE OFFICER)

   Date:  May 12, 1998                     By:  /s/  Peter E. Jansen
         --------------                        -------------------------------- 
                                                        Peter E. Jansen
                                                    Chief Financial Officer
                                                    (PRINCIPAL FINANCIAL AND
                                                      ACCOUNTING OFFICER)






<PAGE>

                                    COCENSYS, INC.                 EXHIBIT 10.1
                                EXECUTIVE OFFICERS'
                               SEVERANCE BENEFIT PLAN

SECTION 1.  INTRODUCTION.

     The CoCensys, Inc. Executive Officers' Severance Benefit Plan (the 
"Plan") was established effective March 26, 1998.  The purpose of the Plan is 
to provide for the payment of severance benefits to certain eligible 
employees of CoCensys, Inc. (the "Company") whose employment with the Company 
is involuntarily or constructively terminated.  This Plan shall supersede any 
severance benefit plan, policy or practice previously maintained by the 
Company. Notwithstanding the foregoing, this Plan shall not supersede the 
CoCensys, Inc. Executive Officers' Change of Control Severance Plan.  This 
Plan document is also the Summary Plan Description for the Plan.

SECTION 2.  ELIGIBILITY FOR BENEFITS.

     (a)  GENERAL RULES.  Subject to the requirements set forth in this 
Section, the Company will grant severance benefits under the Plan to Eligible 
Employees.  

          (i)  "ELIGIBLE EMPLOYEES" shall include the President, the Chief 
Executive Officer, any Vice President and the General Counsel of the Company. 
An Eligible Employee shall be entitled to the payment of severance benefits 
under the Plan in the event that such Eligible Employee's employment with the 
Company is involuntarily terminated without "Cause" (as defined below) or the 
Eligible Employee voluntarily leaves on account of a "Constructive 
Termination" (as defined below).  The Company shall make a reasonable good 
faith determination as to whether such an event has occurred; provided, 
however, that with respect to the Chief Executive Officer, such determination 
shall be made by a majority of the Board of Directors.  It shall be presumed 
that an Eligible Employee has not left the Company on account of a 
Constructive Termination if that Employee voluntarily leaves the Company more 
than sixty (60) days after the later of (A) the occurrence of an event giving 
rise to a claim of Constructive Termination or (B) receipt of notice of such 
event.

               (1)  As used herein "Cause" shall mean:  (A) an intentional 
act that materially injures the Company; (B) the intentional refusal or 
failure to follow the lawful and reasonable directions of the Board of 
Directors or the directions of any individual to whom the Eligible Employee 
reports; (C) the willful and habitual neglect of duties; or (D) the 
conviction of a felony involving moral turpitude which is reasonably likely 
to inflict or has inflicted material injury on the Company; PROVIDED that the 
Eligible Employee did not cure such misconduct within thirty (30) days 
following receipt of written notice of such misconduct from the Company.

               (2)  As used herein "Constructive Termination" shall mean:  
(A) the assignment of duties and responsibilities which result in a 
diminution of position or function (but not merely a change in title or 
reporting relationships); (B) the reduction in base salary by more than ten 
percent (10%); (C) a material reduction in the Eligible Employee's package of

                                       1.
<PAGE>

incentives and benefits in the aggregate; (D) the relocation of the Eligible 
Employee's principal office by more than thirty (30) miles, unless approved 
by the Eligible Employee; (E) the material breach of this Plan or any other 
material agreement between the Eligible Employee and the Company regarding 
the terms and conditions of employment; or (F) the failure of any acquiring 
or surviving corporation to assume the responsibilities of the Company under 
this Plan or under any other material agreement between the Eligible Employee 
and the Company regarding the terms and conditions of employment. 

          (ii)   In order to be eligible to receive benefits under the Plan, 
an Eligible Employee must remain on the job until his or her date of 
termination as scheduled by the Company.

          (iii)  In order to be eligible to receive benefits under the Plan, 
an Eligible Employee must execute a general waiver and release on a form 
provided by the Company.

     (b)  EXCEPTIONS.  An employee who otherwise is an Eligible Employee will 
not receive benefits under this Plan in any of the following circumstances:

          (i)   The employee has executed an individually negotiated 
employment contract or agreement with the Company relating to severance 
benefits that is in effect on his or her termination date.  Such employee's 
severance benefit, if any, shall be governed by the terms of such 
individually negotiated employment contract or agreement, subject to Section 
6(c) of this Plan.

          (ii)  The employee is involuntarily terminated for Cause.

          (iii) The employee voluntarily terminates employment with the 
Company not on account of a Constructive Termination.  Voluntary terminations 
include, but are not limited to, resignation, retirement, or failure to 
return from a leave of absence on the scheduled date, so long as such event 
is not on account of a Constructive Termination.

          (iv)  The employee voluntarily terminates employment with the 
Company in order to accept employment with another entity that is wholly or 
partly owned (directly or indirectly) by the Company or the parent or other 
affiliate of the Company.

          (v)   The employee has qualified to receive benefits under the 
CoCensys, Inc. Executive Officers' Change of Control Severance Plan.

SECTION 3.     AMOUNT OF BENEFIT.

     Severance benefits payable under the Plan are as follows:

     (a)  Eligible Employees whose employment is involuntarily terminated 
without Cause or is voluntarily terminated on account of a Constructive 
Termination as described in Section 2 of this Plan will receive the following 
benefits:

                                       2.
<PAGE>

          (i)  "Pay" (as defined below) for the number of months set forth 
below (the "Pay Continuation Period"):

<TABLE>
<CAPTION>
                                         Time with Company                 Pay
         Eligible Employee          (i.e., "vesting service")     Continuation Period
- -----------------------------      --------------------------     --------------------
<S>                                <C>                            <C>
Chief Executive Officer/President      Less than 6 months                0 months
                                         6 to 12 months                  6 months
                                      more than 12 months               12 months

Vice President/General Counsel         Less than 6 months                0 months
                                         6 to 12 months                  3 months
                                      more than 12 months                6 months
</TABLE>

          (ii)  Payment of a "Target Bonus" (as defined below) pro rated for 
the actual period of employment (which does not include any of the Pay 
Continuation Period) with the Company during the year in which employment is 
terminated.

     (b)  For purposes of calculating Plan benefits:  (i) "Pay" shall mean 
the Eligible Employee's base pay (excluding overtime, bonuses, draws, 
commissions, and other forms of additional compensation), at the rate in 
effect during the last regularly scheduled payroll period immediately 
preceding the Eligible Employee's termination date and (ii) "Target Bonus" 
shall mean the Eligible Employee's target bonus for the year in which the 
Eligible Employee's employment with the Company is terminated without Cause 
or upon a Constructive Termination, in the amount approved by the 
Compensation Committee of the Board of Directors.

     (c)  Unless otherwise approved by the Board of Directors or an 
authorized Committee of the Board of Directors, the terms and conditions of 
any options to acquire Company stock, including without limitation the 
vesting, exercisability and termination of such options, held by the Eligible 
Employee on the termination date shall be determined solely in accordance 
with the Eligible Employee's stock option agreements and the Company stock 
option plans pursuant to which such stock options were granted. 

     (d)  Notwithstanding any other provision of this Plan to the contrary, 
any benefits payable to an Eligible Employee under this Plan shall be offset, 
to the maximum extent permitted by law, by any severance benefits payable by 
the Company to such individual under any other arrangement covering the 
individual.

SECTION 4.     TIME OF PAYMENT AND FORM OF BENEFIT.

     The Company reserves the right to determine whether the severance 
benefits under the Plan will be paid in a single sum or in installments and 
to choose the timing of such payments, provided, however, that all payments 
under this Plan will be completed within a period of time following an 
Eligible Employee's termination date not exceeding the Pay Continuation 
Period.  If a terminating employee is indebted to the Company at his or her 
termination date, the Company reserves the right to offset any severance 
payments under the Plan by the amount of
 
                                       3.
<PAGE>

such indebtedness.  In no event shall payment of any Plan benefit be made 
prior to the Eligible Employee's termination date.  

SECTION 5.  REEMPLOYMENT.

     Severance payments received under Section 3(a) of the Plan will cease in 
the event of an Eligible Employee's reemployment by the Company or any 
affiliate of the Company.

SECTION 6.  MISCELLANEOUS.

     (a)  EXCLUSIVE DISCRETION.  The Plan Administrator shall have the 
exclusive discretion and authority to establish rules, forms, and procedures 
for the administration of the Plan, and to construe and interpret the Plan 
and to decide any and all questions of fact, interpretation, definition, 
computation or administration arising in connection with the operation of the 
Plan, including, but not limited to, the eligibility to participate in the 
Plan and amount of benefits paid under the Plan.  The rules, interpretations, 
computations and other actions of the Plan Administrator shall be binding and 
conclusive on all persons.

     (b)  AMENDMENT OR TERMINATION.  The Company also reserves the right to 
amend or discontinue this Plan or the benefits provided hereunder at any 
time; provided, however, that no such amendment or termination shall affect 
the right to any unpaid benefit of any Eligible Employee whose termination 
date has occurred prior to amendment or termination of the Plan.  Any action 
amending or terminating the Plan shall be adopted by the Board of Directors 
of the Company or the Compensation Committee of the Board, and written notice 
of such amendment or termination shall be provided promptly to all Eligible 
Employees.

     (c)  OTHER SEVERANCE ARRANGEMENTS.  The Company reserves the right to 
make other arrangements regarding severance benefits in special 
circumstances.  The foregoing notwithstanding, in no event shall any 
individual receive from the Company any severance benefit greater than the 
benefit provided under Section 3, unless such individual executes, as a 
condition upon the receipt of such additional benefit, a waiver and release 
of any and all claims that such individual may have against the Company, on 
the form provided by the Company.

SECTION 7.  CONTINUATION OF EMPLOYMENT BENEFITS.

     (a)  COBRA CONTINUATION.  Each Eligible Employee who is enrolled in a 
health or dental plan sponsored by the Company may be eligible to continue 
coverage under such health or dental plan (or to convert to an individual 
policy), at the time of the Eligible Employee's termination of employment 
under the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA").  
The Company will notify the individual of any such right to continue health 
coverage at the time of termination.  The Company will continue to pay its 
share of the Eligible Employee's health insurance premiums during the Pay 
Continuation Period as long as the Eligible Employee elects to continue 
coverage under COBRA and timely pays the Eligible Employee's portion of the 
premiums. If and when the Eligible Employee becomes eligible for another 
group benefits plan through another employer, COBRA coverage through the 
Company will terminate (the "COBRA Period").  No provision of this Plan will 
affect the continuation

                                       4.
<PAGE>

coverage rules under COBRA, except that the Company's payment of any 
applicable insurance premiums during the COBRA Period will be credited as 
payment by the Eligible Employee for purposes of the Eligible Employee's 
payment required under COBRA.  Therefore, the period during which an Eligible 
Employee must elect to continue the Company's group medical or dental 
coverage at his or her own expense under COBRA, the length of time during 
which COBRA coverage will be made available to the Eligible Employee, and all 
other rights and obligations of the Eligible Employee under COBRA (except the 
obligation to pay insurance premiums that the Company pays during the COBRA 
Period) will be applied in the same manner that such rules would apply in the 
absence of this Plan. At the conclusion of the COBRA Period, the Eligible 
Employee will be responsible for the entire payment of premiums required 
under COBRA for the duration of the COBRA period.

     For purposes of this Section 7(a), applicable premiums that will be paid 
by the Company during the Pay Continuation Period shall not include any 
amounts payable by the Eligible Employee under the Company's Section 125 
health care reimbursement plan, which amounts, if any, are the sole 
responsibility of the Eligible Employee.

     (b)  OTHER EMPLOYEE BENEFITS.  All non-health benefits (such as life 
insurance and disability coverage) terminate as of the employee's termination 
date (except to the extent that any conversion privilege is available 
thereunder).

SECTION 8.  NO IMPLIED EMPLOYMENT CONTRACT.

     The Plan shall not be deemed (i) to give any employee or other person 
any right to be retained in the employ of the Company nor (ii) to interfere 
with the right of the Company to discharge any employee or other person at 
any time and for any reason, which right is hereby reserved.

SECTION 9.  LEGAL CONSTRUCTION.

     This Plan is intended to be governed by and shall be construed in 
accordance with the Employee Retirement Income Security Act of 1974 ("ERISA") 
and, to the extent not preempted by ERISA, the laws of the State of 
California.

SECTION 10. CLAIMS, INQUIRIES AND APPEALS.

     (a)  APPLICATIONS FOR BENEFITS AND INQUIRIES.  Any application for 
benefits, inquiries about the Plan or inquiries about present or future 
rights under the Plan must be submitted to the Plan Administrator in writing. 
 The Plan Administrator is:
                                          
                          Vice President, Human Resources
                                   CoCensys, Inc.
                                201 Technology Drive
                              Irvine, California 92618

                                       5.
<PAGE>
                                          
     (b)  DENIAL OF CLAIMS.  In the event that any application for benefits 
is denied in whole or in part, the Plan Administrator must notify the 
applicant, in writing, of the denial of the application, and of the 
applicant's right to review the denial.  The written notice of denial will be 
set forth in a manner designed to be understood by the employee, and will 
include specific reasons for the denial, specific references to the Plan 
provision upon which the denial is based, a description of any additional 
material or information necessary for the applicant to perfect the claim 
along with an explanation as to why such information is necessary and an 
explanation of the Plan's claim procedure.

     This written notice will be given to the employee within 90 days after 
the Plan Administrator receives the application, unless special circumstances 
require an extension of time, in which case, the Plan Administrator has up to 
an additional 90 days for processing the application.  If an extension of 
time for processing is required, written notice of the extension will be 
furnished to the applicant before the end of the initial 90-day period.

     This notice of extension will describe the special circumstances 
necessitating the additional time and the date by which the Plan 
Administrator is to render its decision on the application.  If written 
notice of denial of the application for benefits is not furnished within the 
specified time, the application shall be deemed to be denied.  The applicant 
will then be permitted to appeal the denial in accordance with the Review 
Procedure described below.

     (c)  REQUEST FOR A REVIEW.  Any person (or that person's authorized 
representative) for whom an application for benefits is denied (or deemed 
denied), in whole or in part, may appeal the denial by submitting a written 
request for a review to the Plan Administrator within 60 days after the 
application is denied (or deemed denied).  The Plan Administrator will give 
the applicant (or his or her representative) an opportunity to review 
pertinent documents in preparing a request for a review.  A request for a 
review shall be in writing and shall be addressed to:  
                                          
                          Vice President, Human Resources
                                   CoCensys, Inc.
                                201 Technology Drive
                              Irvine, California 92618
                                          
A request for review must set forth all of the grounds on which it is based, 
all facts in support of the request and any other matters that the applicant 
feels are pertinent.  The Plan Administrator may require the applicant to 
submit additional facts, documents or other material as it may find necessary 
or appropriate in making its review.

     (d)  DECISION ON REVIEW.  The Plan Administrator will act on each 
request for review within 60 days after receipt of the request, unless 
special circumstances require an extension of time (not to exceed an 
additional 60 days), for processing the request for a review.  If an 
extension for review is required, written notice of the extension will be 
furnished to the applicant within the initial 60-day period.  The Plan 
Administrator will give prompt, written notice of its decision to the 
applicant.  In the event that the Plan Administrator confirms the denial of 
the application for benefits in whole or in part, the notice will outline, in 
a manner calculated to be

                                       6.
<PAGE>

understood by the applicant, the specific reasons for the decision and the 
specific Plan provisions upon which the decision is based.  If written notice 
of the Plan Administrator's decision is not given to the applicant within the 
time prescribed in this Section 10(d), the application will be deemed denied 
on review.

     (e)  RULES AND PROCEDURES.  The Plan Administrator will establish rules 
and procedures, consistent with the Plan and with ERISA, as necessary and 
appropriate in carrying out its responsibilities in reviewing benefit claims. 
 The Plan Administrator may require an applicant who wishes to submit 
additional information in connection with an appeal from the denial (or 
deemed denial) of benefits to do so at the applicant's own expense.

     (f)  EXHAUSTION OF REMEDIES.  No legal action for benefits under the 
Plan may be brought until the claimant has (i) submitted a written 
application for benefits in accordance with the procedures described by 
Section 10(a) above, (ii) been notified by the Plan Administrator that the 
application is denied (or the application is deemed denied due to the Plan 
Administrator's failure to act on it within the established time period), 
(iii) filed a written request for a review of the application in accordance 
with the appeal procedure described in Section 10(c) above and (iv) been 
notified in writing that the Plan Administrator has denied the appeal (or the 
appeal is deemed to be denied due to the Plan Administrator's failure to take 
any action on the claim within the time prescribed by Section 10(d) above).

SECTION 11. BASIS OF PAYMENTS TO AND FROM PLAN.

     The Company shall pay all benefits under the Plan.  The Plan shall be 
unfunded, and benefits hereunder shall be paid only from the general assets 
of the Company.

SECTION 12. OTHER PLAN INFORMATION.

     (a)  EMPLOYER AND PLAN IDENTIFICATION NUMBERS.  The Employer 
Identification Number assigned to the Company (which is the "Plan Sponsor" as 
that term is used in ERISA) by the Internal Revenue Service is 330538836. The 
Plan Number assigned to the Plan by the Plan Sponsor pursuant to the 
instructions of the Internal Revenue Service is 503.

     (b)  ENDING DATE FOR PLAN'S FISCAL YEAR.  The date of the end of the 
fiscal year for the purpose of maintaining the Plan's records is December 31.

     (c)  AGENT FOR THE SERVICE OF LEGAL PROCESS.  The agent for the service 
of legal process with respect to the Plan is the General Counsel, CoCensys, 
Inc., 201 Technology Drive, Irvine, California 92618.

     (d)  PLAN SPONSOR AND ADMINISTRATOR.  The "Plan Sponsor" of the Plan is 
CoCensys, Inc., 201 Technology Drive, Irvine, California 92618. The "Plan 
Administrator" of the Plan is the Vice President, Human Resources, CoCensys, 
Inc., 201 Technology Drive, Irvine, California 92618.  The Plan Sponsor and 
Plan Administrator's telephone number is (949) 753-6100.  The Plan 
Administrator is the named fiduciary charged with the responsibility for 
administering the Plan.

                                       7.
<PAGE>

SECTION 13. STATEMENT OF ERISA RIGHTS.

     Participants in this Plan (which is a welfare benefit plan sponsored by 
CoCensys, Inc.) are entitled to certain rights and protections under ERISA.  
If you are an Eligible Employee, you are considered a participant in the Plan 
and, under ERISA, you are entitled to:

     (a)  Examine, without charge, at the Plan Administrator's office and at 
other specified locations, such as work sites, all Plan documents and copies 
of all documents filed by the Plan with the U.S. Department of Labor, such as 
detailed annual reports;

     (b)  Obtain copies of all Plan documents and Plan information upon 
written request to the Plan Administrator.  The Administrator may make a 
reasonable charge for the copies;

     (c)  Receive a summary of the Plan's annual financial report, in the 
case of a plan that is required to file an annual financial report with the 
Department of Labor.  (Generally, all pension plans and welfare plans with 
100 or more participants must file these annual reports.)  

     In addition to creating rights for Plan participants, ERISA imposes 
duties upon the people responsible for the operation of the employee benefit 
plan.  The people who operate the Plan, called "fiduciaries" of the Plan, 
have a duty to do so prudently and in the interest of you and other Plan 
participants and beneficiaries.

     No one, including your employer or any other person, may fire you or 
otherwise discriminate against you in any way to prevent you from obtaining a 
Plan benefit or exercising your rights under ERISA.  If your claim for a Plan 
benefit is denied in whole or in part, you must receive a written explanation 
of the reason for the denial.  You have the right to have the Plan review and 
reconsider your claim.

     Under ERISA, there are steps you can take to enforce the above rights.  
For instance, if you request materials from the Plan and do not receive them 
within 30 days, you may file suit in a federal court.  In such a case, the 
court may require the Plan Administrator to provide the materials and pay you 
up to $100 a day until you receive the materials, unless the materials were 
not sent because of reasons beyond the control of the Plan Administrator.  If 
you have a claim for benefits that is denied or ignored, in whole or in part, 
you may file suit in a state or federal court.  If it should happen that the 
Plan fiduciaries misuse the Plan's money or if you are discriminated against 
for asserting your rights, you may seek assistance from the U.S. Department 
of Labor, or you may file suit in a federal court.  The court will decide who 
should pay court costs and legal fees. If you are successful, the court may 
order the person you have sued to pay these costs and fees.  If you lose, the 
court may order you to pay these costs and fees, for example, if it finds 
your claim is frivolous.

     If you have any questions about the Plan, you should contact the Plan 
Administrator.  If you have any questions about your rights under ERISA, you 
should contact the nearest area office of the U.S. Labor - Management 
Services Administration, Department of Labor.

                                      8.
<PAGE>

SECTION 14. EXECUTION.

     To record the adoption of the Plan as set forth herein, effective as of 
March 26, 1998, CoCensys, Inc. has caused its duly authorized officer to 
execute the same on May 13, 1998.

                                COCENSYS, INC.
     
     
                                By:   /s/ F. Richard Nichol, Ph.D. 
                                      -----------------------------------------
                                Title:   President and Chief Executive Officer
                                      -----------------------------------------


                                       9.

<PAGE>


                                                                   EXHIBIT 10.2

CERTAIN CONFIDENTIAL INFORMATION CONTAINED IN THIS DOCUMENT, MARKED BY 
BRACKETS, HAS BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND 
EXCHANGE COMMISSION PURSUANT TO RULE 24b-2 OF THE SECURITIES EXCHANGE ACT OF 
1934, AS AMENDED.

                                     AGREEMENT

     THIS AGREEMENT (the "Agreement") is made this 8th day of January, 1998, 
by and between CoCensys, Inc., a Delaware corporation ("CoCensys"), located 
at 201 Technology Drive, Irvine, California 92618, and Warner-Lambert 
Company, a Delaware corporation ("Warner"), located at 201 Tabor Road, Morris 
Plains, New Jersey 07950.

                                      RECITALS
                                          
     a.   The parties entered into that certain amended and restated 
Research, Development and Marketing Collaboration Agreement dated October 13, 
1997, (the "Collaboration Agreement"), pursuant to which the parties 
determined to collaborate in efforts to develop and discover NMDA receptor 
sub-type selective antagonists and AMPA-type glutamate receptor antagonists.

     b.   The parties have determined that a collaboration in the area of 
AMPA antagonists would not be beneficial to the parties at this point in time 
and desire to amend the Collaboration Agreement to terminate the AMPA 
collaboration and add certain key man provisions.

     NOW, THEREFORE, in consideration of the foregoing premises and the 
mutual promises, covenants and conditions contained herein, CoCensys and 
Warner hereby agree as follows:

     All capitalized terms used herein shall have the meanings given to them 
in the Collaboration Agreement.

     1.   The Collaboration Agreement is hereby amended to add the following as
a new Section 14.6:
     
     "14.6 Key Personnel. CoCensys shall use its best efforts to ensure that [*]
     oversees the Research Program on behalf of CoCensys and that [*] devotes no
     less than [*] of his time in also overseeing [*] and CoCensys' efforts
     relating to the Research Program.  In the event that on or before the end 
     of the term of the Research Program, (A) [*] (i) is physically and mentally
     capable of overseeing CoCensys' work under the Research Plan but (ii) for 
     any reason fails to oversee such work, or (B) [*] (y) is physically and 
     mentally capable of devoting [*] of his time to overseeing CoCensys' work 
     under the research plan but (z) for any reason fails to

                                       1

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<PAGE>



 
     devote such time to such work, then in the case of either (A) or (B), 
     CoCensys shall immediately notify Warner thereof and CoCensys will have 
     up to [*] after such failure by either [*] to hire a replacement for [*],
     as the case may be (the "Search Period"). By notice delivered to 
     CoCensys during the [*] period after the end of the Search Period, 
     Warner may voluntarily terminate the Term of the Research Program, 
     effective [*] after the end of the Search Period, if in its reasonable 
     scientific opinion or for other reasonable commercial concerns relating 
     to the conduct of the Research Program it does not approve of the 
     replacement for [*] hired by CoCensys, then the Term of the Research 
     Program shall end [*] following the end of the Search Period.  
     Termination of the Research Program pursuant to the previous sentence 
     shall be deemed an ordinary termination of the Term of the Research 
     Program under the first sentence of Section 2.4 and shall not be deemed 
     early termination upon the election of a party under the second sentence 
     of Section 2.4 or termination for breach under Section 14.1.  Warner 
     will be required to make any research funding payments that are required 
     under Section 2.2 that come due on or before the effective date of such 
     termination, and CoCensys will continue to be obligated to perform its 
     duties under the Research Program during the Term of the Research 
     Program.  Warner agrees that during the Term of the Research Program it 
     shall not solicit for employment or employ [*], or otherwise interfere 
     with the employment by CoCensys of [*] with the intent of ending such 
     employment."

     2.   The parties shall in good faith negotiate an amendment to the 
Collaboration Agreement pursuant to which that portion of the Research 
Program devoted to AMPA antagonists will be terminated.  As of the date of 
this Agreement, the parties shall no longer be obligated to perform any work 
under the Research Program or exchange any further research results related 
to AMPA antagonists.

     3.   Section 2.2 of the Collaboration Agreement shall be amended to 
provide that commencing [*], CoCensys shall only be obligated to provide a 
minimum of [*]Scientific FTEs, to be funded by Warner at a rate of [*] per 
Scientific FTE per calendar year.  Section 2.2 shall further be amended to 
provide that in the event Warner determines that the number of Scientific 
FTEs for [*] must be increased, up to a maximum of [*], Warner shall notify 
CoCensys by [*], and CoCensys shall be obligated to provide such FTEs, to be 
funded by Warner, at the reimbursement rates set forth above.  Under all 
circumstances, Warner shall be obligated to fund a minimum of [*] Scientific 
FTEs commencing [*].

     4.   CoCensys hereby agrees that on January 9, 1999, CoCensys shall 
issue to Warner such number of shares of common stock of CoCensys which shall 
equal $1,000,000.00 divided by the "Average Trading Price".  The "Average 
Trading Price" shall be the average of the closing prices of CoCensys common 
stock (as reported in THE WALL STREET JOURNAL, western edition) for the 
thirty (30) "Trading Days" prior to January 9, 1999.  The term "Trading Day" 
shall mean any day on which shares of CoCensys' common stock have been traded 
on a national securities exchange, the NASDAQ stock market or otherwise, as 
reported in THE WALL STREET JOURNAL, western edition.  Subject to 
circumstances beyond CoCensys' reasonable control, CoCensys shall cause such 
shares to

                                       2

* Confidential treatment requested
<PAGE>

be immediately tradable on any securities exchange on which CoCensys' shares 
are then traded (whether by registration or exemption).

     5.   The parties further agree that they shall execute such other 
documents and instruments as may be necessary to effectuate the transactions 
contemplated herein.

     6.   Except as otherwise set forth herein or as subsequently agreed to 
by the parties in the good faith negotiations discussed herein, the terms of 
the amended and restated Research, Development and Marketing Collaboration 
Agreement shall remain unchanged and in full force and effect.

     IN WITNESS WHEREOF, the parties have hereunto set their hands as of the 
date further set forth above.

COCENSYS, INC.                         WARNER-LAMBERT COMPANY


By: /s/ F. Richard Nichol, Ph.D.       By:  /s/ Prof. Ronald M. Cresswell, Ph.D.
    -----------------------------         --------------------------------------
Title:    President and CEO            Title: Vice President and Chairman,
      ---------------------------             Parke-Davis Pharmaceutical 
                                              Research, Warner-Lambert Company
                                              ----------------------------------

                                       3
* Confidential treatment requested

<PAGE>

                                    COCENSYS, INC.                  EXHIBIT 10.3
                                EXECUTIVE OFFICERS'
                          CHANGE OF CONTROL SEVERANCE PLAN
                                          
                                    INTRODUCTION

     The CoCensys, Inc. Executive Officers' Change of Control Severance Plan 
was adopted by the Board of Directors (the "Board") of CoCensys, Inc., a 
Delaware corporation (the "Company"), on December 16, 1997.  The Plan is 
intended to provide Executive Officers who are Participants in the Plan and 
whose employment terminates during the period beginning three (3) months 
prior to a Change of Control and ending fifteen (15) months following a 
Change of Control with the Severance Benefits specified herein. This Plan 
document is also the Summary Plan Description for the Plan.

     Certain capitalized terms used in the Plan are defined in Article 9.
                                          
                       ARTICLE 1 -- ESTABLISHMENT OF THE PLAN

     As of the Effective Date, the Company hereby establishes a severance 
plan to be known as the "Executive Officers' Change of Control Severance 
Plan" (the "Plan"), as set forth herein.  The benefits provided by the Plan 
shall be available to all Participants.
                                          
                              ARTICLE 2 -- ELIGIBILITY

     2.1  PARTICIPATION.  Each Executive Officer whom the Board or the 
Compensation Committee of the Board shall from time to time designate as such 
shall be a participant in the Plan (a "Participant").  Any employee holding 
the title of President, Chief Executive Officer, Vice President, or General 
Counsel shall be considered to be an Executive Officer for purposes of 
eligibility under the Plan without further action by the Board or the 
Compensation Committee of the Board.

     2.2  DURATION OF PARTICIPATION.  A Participant shall cease to be a 
Participant in the Plan when such Participant ceases to be a designated 
Executive Officer; PROVIDED, HOWEVER, that if such Participant is then 
entitled to payment of Severance Benefits, such Participant shall remain a 
Participant in the Plan until the full amount of the Severance Benefits has 
been paid to such Participant.
                                          
                           ARTICLE 3 -- SEVERANCE BENEFITS

          3.1  RIGHT TO SEVERANCE BENEFITS.  A Participant shall be entitled 
to receive the benefits from the Company set forth in Section 3.2 (the 
"Severance Benefits") if, within the period beginning three (3) months prior 
to a Change of Control and ending fifteen (15) months following a Change of 
Control (the "Coverage Period"), the Participant's employment by the Company:

                                       1.
<PAGE>


          (a)  shall be involuntarily terminated by the Company without 
Cause; or

          (b)  shall be voluntarily terminated by the Participant on account 
of an event constituting Constructive Termination.

     3.2  DETERMINATION OF SEVERANCE BENEFITS.  If, after a Change of 
Control, any Participant has a right to receive Severance Benefits pursuant 
to Section 3.1 above, Severance Benefits shall be determined as follows:

          (a)   The Participant shall receive a Severance Payment for the 
number of months set forth below ( the "Severance Payment Period"):
<TABLE>
<CAPTION>
          Participant                        Severance Payment Period
          -----------                        ------------------------
          <S>                                <C>
          Chief Executive Officer/President       24 months
          Vice President/General Counsel          12 months
</TABLE>

          (b)   The Participant shall receive a Target Bonus through the end 
of the Severance Payment Period. Therefore, if the Participant's Severance 
Payment Period is twelve (12) months, then the Participant shall receive an 
amount equal to his or her Target Bonus, and if the Severance Payment Period 
is twenty four (24) months, then the Participant shall receive an amount 
equal to twice his or her Target Bonus.

          (c)  The unvested portion of any stock options issued under the 
Option Plans and held by the Participant on the Date of Termination shall be 
fully vested and exercisable as of the later of: (i) the date of the Change 
of Control or (ii) the Date of Termination.  Such options shall remain 
exercisable until the earlier of (i) the expiration of the original full term 
of the option or (ii) two (2) years following the expiration of the Severance 
Payment Period. 

          (d)  Each Participant who is enrolled in a health or dental plan 
sponsored by the Company may be eligible to continue coverage under such 
health or dental plan (or to convert to an individual policy), at the time of 
the Participant's termination of employment under the Consolidated Omnibus 
Budget Reconciliation Act of 1985 ("COBRA").  The Company will notify the 
individual of any such right to continue health coverage at the time of 
termination.  The Company will continue to pay its share of the Participant's 
health insurance premiums until the earliest of: (i) eighteen (18) months 
after the Date of Termination, (ii) such time as the Participant becomes 
eligible to participate in another employer's health insurance plan, or (iii) 
the termination of the Severance Payment Period; PROVIDED THAT the 
Participant elects to continue coverage under COBRA and timely pays the 
Participant's portion of the premiums (the "COBRA Period").  No provision of 
this Plan will affect the continuation coverage rules under COBRA, except 
that the Company's payment of any applicable insurance premiums during the 
COBRA Period will be credited as payment by the Participant for purposes of 
the Participant's payment required under COBRA.  Therefore, the period during 
which an Participant must elect to continue the Company's group medical or 
dental coverage at his or her own expense under COBRA, the length of time 
during which COBRA coverage will be made available to the Participant, and 
all other rights and obligations of the Participant under COBRA (except the 

                                       2.
<PAGE>

obligation to pay insurance premiums that the Company pays during the COBRA 
Period) will be applied in the same manner that such rules would apply in the 
absence of this Plan.  At the conclusion of the COBRA Period, the Participant 
will be responsible for the entire payment of premiums required under COBRA 
for the duration of the COBRA period.

     For purposes of this Section 3.2(d), applicable premiums that will be 
paid by the Company during the Severance Payment Period shall not include any 
amounts payable by the Participant under the Company's Section 125 health 
care reimbursement plan, which amounts, if any, are the sole responsibility 
of the Participant.

     3.3  TIME OF SEVERANCE PAYMENT.  The Company reserves the right to 
determine whether the Severance Benefits under the Plan will be paid in a 
single sum or in installments and to choose the timing of such payments, 
provided, however, that all payments under this Plan will be completed within 
a period of time following a Participant's Date of Termination not exceeding 
the Severance Payment Period. Notwithstanding the foregoing, the 
Participant's Target Bonus payment under Section 3.2(b) shall be paid as 
follows: (i) in a lump sum no later than thirty (30) days following the Date 
of Termination if the Participant's Severance Payment Period is twelve (12) 
months, or (ii) in two equal installments, with the first installment no 
later than thirty (30) days following the Date of Termination and the second 
installment no later than thirteen (13) months following the Date of 
Termination, if the Participant's Severance Payment Period is twenty four 
(24) months. If a terminating employee is indebted to the Company at his or 
her Date of Termination, the Company reserves the right to offset any 
Severance Benefits under the Plan by the amount of such indebtedness. In no 
event shall payment of any Plan benefit be made prior to the Participant's 
Date of Termination.

     3.4  NO MITIGATION.  The Participant shall not be required to mitigate 
the amount of the Severance Benefits by seeking other employment or 
otherwise, and, subject to Section 3.2(d), any amount earned by the 
Participant as the result of employment by another employer after the Date of 
Termination shall not reduce the amount of the Severance Benefit.

     3.5  MAXIMUM BENEFIT OFFSETS AND WITHHOLDING.  In the event of a Change 
of Control, (i) the Severance Benefits are in lieu of any other benefit 
provided under any other group severance plan of the Company and (ii) 
Severance Benefits shall be reduced by the amount of any payment to which the 
Participant is entitled under any individual severance agreement then in 
effect between the Participant and the Company.  In addition, the Company 
shall withhold appropriate federal, state, local and foreign income and 
employment taxes from any payments hereunder.

     3.6  NOTICE OF TERMINATION.  Any termination by the Company for Cause or 
by the Participant on account of Constructive Termination shall be 
communicated by Notice of Termination to the other party hereto given by hand 
delivery or by registered or certified mail, return receipt requested, 
postage prepaid, if to the Participant, then to the Participant at the 
Participant's address as set forth in the Company's records, and, if to the 
Company, to CoCensys, Inc., 201 Technology Drive, Irvine, California 92618.  
Any notices given pursuant to this Section 3.6 shall be effective on the 
earlier of the date on which such notice is actually received by the 

                                       3.
<PAGE>

addressee or the date that is three days after such notice is sent by the 
addressor.  For purposes of the Plan, a "Notice of Termination" means a 
written notice which (i) indicates the specific termination provision in the 
Plan relied upon and (ii) if the Date of Termination, as defined below, is 
other than the date of receipt of such notice, specifies the termination date 
(which date shall be not more than fifteen (15) days after the giving of such 
notice).   The failure by the Company or the Participant to set forth in the 
Notice of Termination any fact or circumstance which contributes to a showing 
of Cause or of Constructive Termination shall not waive any right of the 
Company or of the Participant, respectively, hereunder or preclude the 
Company or the Participant, respectively, from asserting such fact or 
circumstance in enforcing its, his or her rights hereunder.

     3.7  DATE OF TERMINATION.  "Date of Termination" means the date of 
receipt of the Notice of Termination or any later date specified therein, as 
the case may be; PROVIDED, HOWEVER, that (i) if the Participant's employment 
is terminated by the Company other than by reason of death or Disability, or 
for Cause, the Date of Termination shall be the date on which the Company 
notifies the Participant of such termination and (ii) if the Participant's 
employment is terminated by reason of death or Disability, the Date of 
Termination shall be the date of death or determination of Disability 
pursuant to Section 9.5, as the case may be.

     3.8  SPECIAL EXCEPTION.  No benefit shall be payable hereunder solely 
because a Participant's employment terminates because the Company or a 
subsidiary, a division or other operating assets thereof is sold after a 
Change of Control if:

          (a)  The purchaser is contractually obligated to offer the 
Participant a comparable or better job without relocation; and

          (b)  The purchaser is contractually obligated to maintain a plan at 
least equivalent to this Plan.

     3.9  CERTAIN REDUCTION OF PAYMENTS. 

          (a)  Anything in the Plan to the contrary notwithstanding, in the 
event that any payment, distribution or other benefit provided by the Company 
to or for the benefit of a Participant (whether paid or payable or provided 
or to be provided pursuant to the terms of the Plan or otherwise) (a 
"Payment") would (i) constitute a "parachute payment" within the meaning of 
Section 280G of the Code and (ii) but for this Section 3.9, be subject to the 
excise tax imposed by Section 4999 of the Code (the "Excise Tax"), then, in 
accordance with this Section 3.9, such Payments shall be reduced to the 
maximum amount that would result in no portion of the Payments being subject 
to the Excise Tax, but only if and to the extent that such a reduction would 
result in the Participant's receipt of Payments that are greater than the net 
amount the Participant would receive (after application of the Excise Tax) if 
no reduction is made.  The amount of required reduction, if any, shall be the 
smallest amount so that the Participant's net proceeds with respect to the 
Payments (after taking into account payment of any Excise Tax and all 
federal, state and local income, employment or other taxes) shall be 
maximized.  If, notwithstanding any reduction described in this Section 3.9 
(or in the absence of any such reduction), the IRS determines that a Payment 
is subject to the Excise Tax (or subject to a

                                       4.
<PAGE>

different amount of the Excise Tax than determined by the Company or the 
Participant), then Section 3.9(c) shall apply.  If the Excise Tax is not 
eliminated pursuant to this Section 3.9, the Participant shall pay the Excise 
Tax.

          (b)   All determinations required to be made under this Section 3.9 
shall be made by the Company's independent auditors.  Such auditors shall 
provide detailed supporting calculations both to the Company and the 
Participant.  Any such reasonable determination by the Company's independent 
auditors shall be binding upon the Company and the Participant.  The 
Participant shall determine which and how much of the Payments, including 
without limitation any option acceleration benefits provide under this Plan 
or any option ("Option Benefits"), as the case may be, shall be eliminated or 
reduced consistent with the requirements of this Section 3.9, provided that, 
if the Participant does not make such determination within ten business days 
of the receipt of the calculations made by the Company's independent 
auditors, the Company shall elect which and how much of the Option Benefits 
or other Payments, as the case may be, shall be eliminated or reduced 
consistent with the requirements of this Section 3.9 and in the following 
order: payments of the Target Bonus under Section 3.2(b), Severance Payments 
under Section 3.2(a), and option acceleration as described in Section 3.2(c), 
and then the Company shall notify the Participant promptly of such election.  
Within five business days thereafter, the Company shall pay to or distribute 
to or for the benefit of the Participant such amounts as are then due to the 
Participant under the Plan.

          (c)  As a result of the uncertainty in the application of Section 
280G of the Code at the time of the initial determination by the Company's 
independent auditors hereunder, it is possible that Option Benefits or other 
Payments, as the case may be, will have been made by the Company which should 
not have been made ("Overpayment") or that additional Option Benefits or 
other Payments, as the case may be, which will not have been made by the 
Company could have been made ("Underpayment"), in each case, consistent with 
the calculations required to be made hereunder.  In the event that the 
Company's independent auditors, based upon the assertion of a deficiency by 
the IRS against the Participant or the Company which the Company's 
independent auditors believe has a high probability of success, determine 
that an Overpayment has been made, any such Overpayment paid or distributed 
by the Company to or for the benefit of the Participant shall be treated for 
all purposes as a loan AB INITIO to the Participant which the Participant 
shall repay to the Company together with interest at the applicable federal 
rate provided for in Section 7872(f)(2) of the Code; PROVIDED, HOWEVER, that 
no such loan shall be deemed to have been made and no amount shall be payable 
by the Participant to the Company if and to the extent such deemed loan and 
payment would not either reduce the amount on which the Participant is 
subject to tax under Section 1 and Section 4999 of the Code or generate a 
refund of such taxes.  In the event that the Company's independent auditors, 
based upon controlling precedent or other substantial authority, determine 
that an Underpayment has occurred, any such Underpayment shall be promptly 
paid by the Company to or for the benefit of the Participant together with 
interest at the applicable federal rate provided for in Section 7872(f)(2) of 
the Code.

                                       5.
<PAGE>

                  ARTICLE 4 -- PAYMENTS TO AND FROM THE PLAN

     The benefits under the Plan shall be paid from the general funds of the 
Company, and the Participants shall be no more than unsecured general 
creditors of the Company. 
                                          
                 ARTICLE 5 -- OTHER RIGHTS AND BENEFITS NOT AFFECTED

     5.1  NONEXCLUSIVITY.  Nothing in the Plan shall prevent or limit any 
Participant's continuing or future participation in any benefit, bonus, 
incentive or other plans, programs, policies or practices provided by the 
Company and for which a Participant may otherwise qualify, nor shall anything 
herein limit or otherwise affect such rights as any Participant may have 
under any stock option or other agreements with the Company; PROVIDED, 
HOWEVER, that in accordance with Section 3.5, in the event of a Change of 
Control, the Severance Payments hereunder shall be in lieu of any other 
severance payments to which any Participant may otherwise be entitled, 
including without limitation, under any employment contract or severance 
plan.  Except as otherwise expressly provided herein, amounts which are 
vested benefits or which a Participant is otherwise entitled to receive under 
any plan, policy, practice or program of the Company at or subsequent to the 
Date of Termination shall be payable in accordance with such plan, policy, 
practice or program.

     5.2  EMPLOYMENT STATUS.  The Plan does not constitute a contract of 
employment or impose on any Participant or the Company any obligation to 
retain any Participant as an employee, to change the status of the 
Participant's employment, or to change the Company's policies regarding 
termination of employment.
                                          
                          ARTICLE 6 -- SUCCESSOR TO COMPANY

     The Plan shall be binding upon any successor or assignee, whether direct 
or indirect, by purchase, merger, consolidation or otherwise, to all or 
substantially all the business or assets of the Company, and any such 
successor or assignee shall be required to perform the Company's obligations 
under the Plan, in the same manner and to the same extent that the Company 
would be required to perform if no such succession or assignment had taken 
place.  In such event, the term "Company," as used in the Plan, shall mean 
the Company as hereinafter defined and any successor or assignee to the 
business or assets which by reason hereof becomes bound by the terms and 
provisions of the Plan.
                                          
                       ARTICLE 7 -- NON-ALIENATION OF BENEFITS

     No benefit hereunder shall be subject to anticipation, alienation, sale, 
transfer, assignment, pledge, encumbrance or charge, and any attempt to do so 
shall be void.
                                          
                   ARTICLE 8 -- LEGAL CONSTRUCTION AND ARBITRATION

     8.1  APPLICABLE LAW. This Plan is intended to be governed by and shall 
be construed in accordance with the Employee Retirement Income Security Act 
of 1974 ("ERISA") and, to the extent not preempted by ERISA, the laws of the 
State of California.

                                       6.
<PAGE>

     8.2  ARBITRATION.  Any and all disputes or controversies, whether of law 
or fact of any nature whatsoever, arising from or respecting the application 
of the Plan to any Participant shall be decided by arbitration by the 
American Arbitration Association in accordance with the rules and regulations 
of that Association, or by any other arbitration body mutually agreed upon by 
the parties.  Pre-arbitration discovery shall be permitted at the request of 
either party to a dispute under appropriate protection for proprietary and 
confidential business information.

     The arbitrators shall be selected as follows:  the Company and the 
Participant who is a party to the dispute shall each select one independent, 
qualified arbitrator and the two arbitrators so selected shall select the 
third arbitrator. The Company reserves the right to disqualify any individual 
arbitrator who shall be employed by or affiliated with a competing 
organization.

     Arbitration shall take place in Irvine, California, or any other 
location mutually agreeable to the parties.  At the request of either party, 
arbitration proceedings will be conducted in the utmost secrecy and, in such 
case, all documents, testimony and records shall be received, heard and 
maintained by the arbitrators in secrecy under seal, available for inspection 
only by the parties to the arbitration, their respective attorneys, and their 
respective expert consultants or witnesses who shall agree, in advance and in 
writing, to receive all such information confidentially and to maintain such 
information in secrecy, and make no use of such information except for the 
purposes of the arbitration, until such information shall become generally 
known.

     The arbitrators, who shall act by majority vote, shall be able to decree 
any and all relief of an equitable nature, including but not limited to such 
relief as a temporary restraining order, a temporary injunction, or a 
permanent injunction, and shall also be able to award damages, with or 
without an accounting and costs. The decree or judgment of an award rendered 
by the arbitrators may be entered and enforced in any court having 
jurisdiction over the parties.

     Reasonable notice of the time and place of arbitration shall be given to 
persons other than the parties, if such notice is required by law, in which 
case such persons or their authorized representatives shall have the right to 
attend or participate in the arbitration hearing in such manner as the law 
shall require.

     If any action is necessary to enforce or interpret the application of 
the Plan to a Participant, the prevailing party shall be entitled to 
reasonable attorney's fees, costs, and necessary disbursements in addition to 
any other relief to which that party may be entitled.
                                          
                              ARTICLE 9 -- DEFINITIONS

     For purposes of the Plan, the following terms shall have the meanings 
set forth below.

     9.1   "CAUSE" shall mean: (a) an intentional act that materially injures 
the Company; (b) the intentional refusal or failure to follow the lawful and 
reasonable directions of the Board of Directors or the directions of any 
individual to whom the Participant reports; (c) the willful and habitual 
neglect of duties; or (d) the conviction of a felony involving moral 
turpitude which is reasonably likely to inflict or has inflicted material 
injury on the Company; PROVIDED that the

                                       7.
<PAGE>

Participant did not cure such misconduct within thirty (30) days following 
receipt of written notice of such misconduct from the Company.

     9.2  "CHANGE OF CONTROL" shall be deemed to have occurred at any of the 
following times:

           (a)  Upon the adoption by the stockholders of the Company of a 
plan of dissolution, liquidation, or sale or distribution of substantially 
all of the assets or operations of the Company;

          (b)  Upon stockholder approval of a reorganization, merger, 
consolidation or other combination of the Company with one or more 
corporations as a result of which the Company will not be a surviving 
corporation and the stockholders of the Company immediately prior to the 
transaction will own beneficially less than sixty percent (60%) of the then 
outstanding shares of the equity securities of the controlling entity 
immediately following consummation of the transaction;

          (c)  Upon stockholder approval of a reorganization, merger, 
consolidation or other combination of the Company with one or more 
corporations as a result of which the Company will be a surviving 
corporation, but pursuant to which a person (as defined in Section 3(a)(9) 
and 14(d)(2) of the Securities Exchange Act of 1934, as amended (the 
"Exchange Act")) or group of persons will acquire the beneficial ownership of 
forty percent (40%) or more of the equity securities of the Company 
immediately following consummation; or

          (d)  At such time that, in connection with a tender offer or 
exchange offer for any shares of the Company's outstanding common stock (or 
securities convertible into common stock) or other sale of any such 
securities by stockholders of the Company, a person or group of persons owns 
beneficially thirty-three percent (33%) or more of the outstanding common 
stock of the Company.

          For purposes of this Section 9.2, a "person" shall exclude (i) the 
Company, (ii) any subsidiary of the Company, (iii) any trustee or other 
fiduciary holding securities under an employee benefit plan of the Company, 
or (iv) any company owned, directly or indirectly, by the stockholders of the 
Company in substantially the same proportion as their ownership of stock of 
the Company prior to the consummation of the transaction.

     9.3  "COMPANY" means CoCensys, Inc., a Delaware corporation, and any 
successor as provided in Article 6 hereof.

     9.4  "DATE OF TERMINATION" has the meaning set forth in Section 3.7.

     9.5  "DISABILITY" means permanent and total disability as defined in 
Section 22(e)(3) of the Internal Revenue Code of 1986, as amended.

     9.6  "EFFECTIVE DATE" shall mean January 1, 1998.

                                       8.
<PAGE>

     9.7  "EXECUTIVE OFFICER" means the Chief Executive Officer, the 
President, any Vice President and the General Counsel of the Company.

     9.8  "CONSTRUCTIVE TERMINATION" means (i) the assignment of duties and 
responsibilities which result in a diminution of position or function (but 
not merely a change in title or reporting relationships); (ii) the reduction 
in base salary by more than ten percent (10%); (iii) a material reduction in 
the Eligible Employee's package of incentives and benefits in the aggregate; 
(iv) the relocation of the Eligible Employee's principal office by more than 
thirty (30) miles, unless approved by the Eligible Employee; (v) the material 
breach of this Plan or any other material agreement between the Eligible 
Employee and the Company regarding the terms and conditions of employment; or 
(vi) the failure of any acquiring or surviving corporation to assume the 
responsibilities of the Company under this Plan or under any other material 
agreement between the Eligible Employee and the Company regarding the terms 
and conditions of employment. 

     9.9  "NOTICE OF TERMINATION" has the meaning set forth in Section 3.6.

     9.10 "OPTION PLANS" shall mean those Plans adopted by the Company by 
which an Executive Officer has been or may be granted a stock option to 
acquire the Company's common stock or other equity securities, as well as any 
employee stock option plan adopted subsequent to the date hereof and prior to 
a Change of Control (and any plans succeeding thereto).

     9.11 "PARTICIPANT" has the meaning set forth in Section 2.1.

     9.12 "PERSON" shall mean any individual, firm, corporation or other 
entity, and shall include any successor (by merger or otherwise) of such 
entity.

     9.13 "PLAN" has the meaning set forth in Article 1.

     9.14 "SEVERANCE BENEFITS" has the meaning set forth in Section 3.1.

     9.15 "SEVERANCE PAYMENT" shall mean the Participant's base pay 
(excluding overtime, bonuses, draws, commissions, and other forms of 
additional compensation), at the rate in effect during the last regularly 
scheduled payroll period immediately preceding the Date of Termination.

     9.16 "TARGET BONUS" shall mean the greater of: (i) the Participant's 
target bonus for the year in which the Date of Termination occurs, as 
approved by the Compensation Committee of the Board of Directors or (ii) the 
average of the annual bonuses actually paid to the Participant over the two 
years immediately preceding the Date of Termination (or if less, the period 
of time the Participant has provided services to the Company).
                                          
                            ARTICLE 10 -- MISCELLANEOUS

     10.1 SEVERABILITY.  If any term, provision, covenant or restriction of 
the Plan is held by a court of competent jurisdiction or other authority to 
be invalid, void or unenforceable, the

                                       9.
<PAGE>

remainder of the terms, provisions, covenants and restrictions of the Plan 
shall remain in full force and effect and shall in no way be affected, 
impaired or invalidated.

     10.2 CONSTRUCTION OF PLAN.  Any gender, where appearing in the Plan, 
shall be deemed to include the other gender, the singular shall include the 
plural, and the plural shall include the singular, unless the context 
otherwise requires. Descriptive headings of the several Articles of the Plan 
are inserted for convenience only and shall not control or affect the meaning 
or construction of any of the provisions hereof.  In the event of a conflict 
between the text of the Plan and any summary, description or other 
information regarding the Plan, the text of the Plan shall control. 

     10.3 AMENDMENT OR TERMINATION. The Company, by resolution of the 
Company's Board of Directors or the Compensation Committee of the Board, may 
amend or terminate this Plan with respect to any Participant or all 
Participants at any time except during the Coverage Period.
                                          
                     ARTICLE 11 -- CLAIMS, INQUIRIES AND APPEALS

     11.1 APPLICATIONS FOR BENEFITS AND INQUIRIES.  Any application for 
benefits, inquiries about the Plan or inquiries about present or future 
rights under the Plan must be submitted to the Plan Administrator in writing. 
 The Plan Administrator is: 
                                          
                          Vice President, Human Resources
                                   CoCensys, Inc.
                                201 Technology Drive
                              Irvine, California 92618

     11.2 DENIAL OF CLAIMS.  In the event that any application for benefits 
is denied in whole or in part, the Plan Administrator must notify the 
applicant, in writing, of the denial of the application, and of the 
applicant's right to review the denial.  The written notice of denial will be 
set forth in a manner designed to be understood by the employee, and will 
include specific reasons for the denial, specific references to the Plan 
provision upon which the denial is based, a description of any additional 
material or information necessary for the applicant to perfect the claim 
along with an explanation as to why such information is necessary and an 
explanation of the Plan's claim procedure.

     This written notice will be given to the employee within 90 days after 
the Plan Administrator receives the application, unless special circumstances 
require an extension of time, in which case, the Plan Administrator has up to 
an additional 90 days for processing the application.  If an extension of 
time for processing is required, written notice of the extension will be 
furnished to the applicant before the end of the initial 90-day period.

     This notice of extension will describe the special circumstances 
necessitating the additional time and the date by which the Plan 
Administrator is to render its decision on the application.  If written 
notice of denial of the application for benefits is not furnished within the 

                                       10.
<PAGE>

specified time, the application shall be deemed to be denied.  The applicant 
will then be permitted to appeal the denial in accordance with the Review 
Procedure described below.

     11.3 REQUEST FOR A REVIEW.  Any person (or that person's authorized 
representative) for whom an application for benefits is denied (or deemed 
denied), in whole or in part, may appeal the denial by submitting a written 
request for a review to the Plan Administrator within 60 days after the 
application is denied (or deemed denied).  The Plan Administrator will give 
the applicant (or his or her representative) an opportunity to review 
pertinent documents in preparing a request for a review.  A request for a 
review shall be in writing and shall be addressed to:  
                                          
                          Vice President, Human Resources
                                   CoCensys, Inc.
                                201 Technology Drive
                              Irvine, California 92618

A request for review must set forth all of the grounds on which it is based, 
all facts in support of the request and any other matters that the applicant 
feels are pertinent.  The Plan Administrator may require the applicant to 
submit additional facts, documents or other material as it may find necessary 
or appropriate in making its review.

     11.4 DECISION ON REVIEW.  The Plan Administrator will act on each 
request for review within 60 days after receipt of the request, unless 
special circumstances require an extension of time (not to exceed an 
additional 60 days), for processing the request for a review.  If an 
extension for review is required, written notice of the extension will be 
furnished to the applicant within the initial 60-day period.  The Plan 
Administrator will give prompt, written notice of its decision to the 
applicant.  In the event that the Plan Administrator confirms the denial of 
the application for benefits in whole or in part, the notice will outline, in 
a manner calculated to be understood by the applicant, the specific reasons 
for the decision and the specific Plan provisions upon which the decision is 
based.  If written notice of the Plan Administrator's decision is not given 
to the applicant within the time prescribed in this Section 11.4, the 
application will be deemed denied on review.

     11.5 RULES AND PROCEDURES.  The Plan Administrator will establish rules 
and procedures, consistent with the Plan and with ERISA, as necessary and 
appropriate in carrying out its responsibilities in reviewing benefit claims. 
The Plan Administrator may require an applicant who wishes to submit 
additional information in connection with an appeal from the denial (or 
deemed denial) of benefits to do so at the applicant's own expense.

     11.6 EXHAUSTION OF REMEDIES.  No legal action for benefits under the 
Plan may be brought until the claimant has (i) submitted a written 
application for benefits in accordance with the procedures described by 
Section 11.1 above, (ii) been notified by the Plan Administrator that the 
application is denied (or the application is deemed denied due to the Plan 
Administrator's failure to act on it within the established time period), 
(iii) filed a written request for a review of the application in accordance 
with the appeal procedure described in Section 11.3 above and (iv) been 
notified in writing that the Plan Administrator has denied the appeal (or the 
appeal is

                                       11.
<PAGE>

deemed to be denied due to the Plan Administrator's failure to take any 
action on the claim within the time prescribed by Section 11.4 above). 
                                          
                        ARTICLE 12 -- OTHER PLAN INFORMATION

     12.1 EMPLOYER AND PLAN IDENTIFICATION NUMBERS.  The Employer 
Identification Number assigned to the Company (which is the "Plan Sponsor" as 
that term is used in ERISA) by the Internal Revenue Service is 330538836.  
The Plan Number assigned to the Plan by the Plan Sponsor pursuant to the 
instructions of the Internal Revenue Service is 504.

     12.2 ENDING DATE FOR PLAN'S FISCAL YEAR.  The date of the end of the 
fiscal year for the purpose of maintaining the Plan's records is December 31.

     12.3  AGENT FOR THE SERVICE OF LEGAL PROCESS.  The agent for the service 
of legal process with respect to the Plan is the General Counsel, CoCensys, 
Inc., 201 Technology Drive, Irvine, California 92618.

     12.4 PLAN SPONSOR AND ADMINISTRATOR.  The "Plan Sponsor" of the Plan is 
CoCensys, Inc., 201 Technology Drive, Irvine, California 92618. The "Plan 
Administrator" of the Plan is the Vice President, Human Resources, CoCensys, 
Inc., 201 Technology Drive, Irvine, California 92618.  The Plan Sponsor and 
Plan Administrator's telephone number is (949) 753-6100.  The Plan 
Administrator is the named fiduciary charged with the responsibility for 
administering the Plan. 
                                          
                       ARTICLE 13 -- STATEMENT OF ERISA RIGHTS

     13.1 Participants in this Plan (which is a welfare benefit plan 
sponsored by CoCensys, Inc.) are entitled to certain rights and protections 
under ERISA.  If you are a Participant, you are considered a participant in 
the Plan and, under ERISA, you are entitled to:

          (a)  Examine, without charge, at the Plan Administrator's office 
and at other specified locations, such as work sites, all Plan documents and 
copies of all documents filed by the Plan with the U.S. Department of Labor, 
such as detailed annual reports;

          (b)  Obtain copies of all Plan documents and Plan information upon 
written request to the Plan Administrator.  The Administrator may make a 
reasonable charge for the copies;

          (c)  Receive a summary of the Plan's annual financial report, in 
the case of a plan that is required to file an annual financial report with 
the Department of Labor.  (Generally, all pension plans and welfare plans 
with 100 or more participants must file these annual reports.)  

          (d)  In addition to creating rights for Plan participants, ERISA 
imposes duties upon the people responsible for the operation of the employee 
benefit plan. The people who operate the Plan, called "fiduciaries" of the 
Plan, have a duty to do so prudently and in the interest of you and other 
Plan participants and beneficiaries.

                                       12.
<PAGE>

          (e)  No one, including your employer or any other person, may fire 
you or otherwise discriminate against you in any way to prevent you from 
obtaining a Plan benefit or exercising your rights under ERISA.  If your 
claim for a Plan benefit is denied in whole or in part, you must receive a 
written explanation of the reason for the denial.  You have the right to have 
the Plan review and reconsider your claim.

          (f)  Under ERISA, there are steps you can take to enforce the above 
rights.  For instance, if you request materials from the Plan and do not 
receive them within 30 days, you may file suit in a federal court.  In such a 
case, the court may require the Plan Administrator to provide the materials 
and pay you up to $100 a day until you receive the materials, unless the 
materials were not sent because of reasons beyond the control of the Plan 
Administrator.  If you have a claim for benefits that is denied or ignored, 
in whole or in part, you may file suit in a state or federal court.  If it 
should happen that the Plan fiduciaries misuse the Plan's money or if you are 
discriminated against for asserting your rights, you may seek assistance from 
the U.S. Department of Labor, or you may file suit in a federal court.  The 
court will decide who should pay court costs and legal fees.  If you are 
successful, the court may order the person you have sued to pay these costs 
and fees.  If you lose, the court may order you to pay these costs and fees, 
for example, if it finds your claim is frivolous.

     13.2 If you have any questions about the Plan, you should contact the 
Plan Administrator.  If you have any questions about your rights under ERISA, 
you should contact the nearest area office of the U.S. Labor - Management 
Services Administration, Department of Labor. 
                                          
                               ARTICLE 14 -- EXECUTION

     Having been adopted by its Board on December 16, 1997, the Plan has been
executed by a duly authorized officer on May 13th, 1998.
 
                                  COCENSYS, INC.

                                  By:   F. Richard Nichol, Ph.D.               
                                     -------------------------------------------
                                  Title:   President and Chief Executive Officer
                                        ----------------------------------------

                                       13.

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FORM 10-Q FOR THE PERIOD ENDED MARCH 31, 1998 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                           1,208
<SECURITIES>                                    13,224
<RECEIVABLES>                                       65
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                14,546
<PP&E>                                           6,570
<DEPRECIATION>                                 (3,748)
<TOTAL-ASSETS>                                  18,085
<CURRENT-LIABILITIES>                            5,766
<BONDS>                                            493
                           16,566
                                          0
<COMMON>                                        97,441
<OTHER-SE>                                   (102,310)
<TOTAL-LIABILITY-AND-EQUITY>                    18,085
<SALES>                                              0
<TOTAL-REVENUES>                                 1,136
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  24
<INCOME-PRETAX>                                (3,193)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (3,193)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (3,193)
<EPS-PRIMARY>                                   (0.15)
<EPS-DILUTED>                                   (0.15)
        

</TABLE>


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