MERCK & CO INC
10-K/A, 1997-06-16
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1
 
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 16, 1997
================================================================================
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D. C. 20549
 
                               ------------------
 
                                  FORM 10-K/A
 
                      AMENDMENT TO FORM 10-K ANNUAL REPORT
 
                    Filed pursuant to Section 13 or 15(d) of
 
                      The Securities Exchange Act of 1934
 
                               ------------------
 
                               MERCK & CO., INC.
 
                                  P.O. BOX 100
 
                   WHITEHOUSE STATION, NEW JERSEY 08889-0100
 
================================================================================
<PAGE>   2
 
                                AMENDMENT NO. 1
 
     The undersigned registrant hereby amends the following items, financial
statements, exhibits or other portions of its annual report on Form 10-K for the
fiscal year ended December 31, 1996 as set forth below:
 
1.  Add Exhibit Numbers 99(a), 99(b) and 99(c) as follows:
 
<TABLE>
<CAPTION>
EXHIBIT                                                         METHOD OF
NUMBER                 DESCRIPTION                               FILING
<C>      <S>                                        <C>
 
99(a)    -- Financial statements and exhibits       Filed with this Form 10-K/A
            required by Form 11-K Annual Report     Amendment
            pursuant to Section 15(d) of the
            Securities Exchange Act of 1934 for
            the Merck & Co., Inc. Employee
            Savings and Security Plan for the
            fiscal year ended December 31, 1996
 
99(b)    -- Financial statements and exhibits       Filed with this Form 10-K/A
            required by Form 11-K Annual Report     Amendment
            pursuant to Section 15(d) of the
            Securities Exchange Act of 1934 for
            the Merck & Co., Inc. Employee Stock
            Purchase and Savings Plan for the
            fiscal year ended December 31, 1996
 
99(c)    -- Financial statements and exhibits       Filed with this Form 10-K/A
            required by Form 11-K Annual Report     Amendment
            pursuant to Section 15(d) of the
            Securities Exchange Act of 1934 for
            the Hubbard Farms, Inc. Employee
            Savings Plan for the fiscal year
            ended December 31, 1996
</TABLE>
 
                                        2
<PAGE>   3
 
                                   SIGNATURES
 
     PURSUANT TO THE REQUIREMENTS OF SECTION 13 OR 15(D) OF THE SECURITIES
EXCHANGE ACT OF 1934, THE REGISTRANT HAS DULY CAUSED THIS AMENDMENT TO BE SIGNED
ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO DULY AUTHORIZED.
 
                                          MERCK & CO., INC.
Dated:  June 16, 1997
                                               By  RAYMOND V. GILMARTIN
                                              (CHAIRMAN OF THE BOARD,
                                                     PRESIDENT
                                            AND CHIEF EXECUTIVE OFFICER)
 
                                                    By  /s/ CELIA A. COLBERT
                                                            CELIA A. COLBERT
                                                           (ATTORNEY-IN-FACT)
 
     PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THIS
AMENDMENT HAS BEEN SIGNED BELOW BY THE FOLLOWING PERSONS ON BEHALF OF THE
REGISTRANT AND IN THE CAPACITIES AND ON THE DATES INDICATED.
 
<TABLE>
<CAPTION>
                SIGNATURES                                 TITLE                       DATE
- ------------------------------------------   ----------------------------------   ---------------
<C>                                          <S>                                      <C>
 
           RAYMOND V. GILMARTIN              Chairman of the Board,
                                               President and Chief
                                               Executive Officer ;
                                               Principal Executive
                                               Officer ; Director
 
              JUDY C. LEWENT                 Senior Vice President
                                               and Chief Financial
                                               Officer; Principal
                                               Financial Officer
 
             PETER E. NUGENT                 Vice President, Controller ;
                                               Principal Accounting
                                               Officer                                June 16, 1997
         H. BREWSTER ATWATER, JR.
               DEREK BIRKIN
           LAWRENCE A. BOSSIDY
             WILLIAM G. BOWEN
            JOHNNETTA B. COLE
              LLOYD C. ELAM                  Directors 
          CHARLES E. EXLEY, JR.
            WILLIAM N. KELLEY
            EDWARD M. SCOLNICK
             SAMUEL O. THIER
</TABLE>
 
     CELIA A. COLBERT, BY SIGNING HER NAME HERETO, DOES HEREBY SIGN THIS
DOCUMENT PURSUANT TO POWERS OF ATTORNEY DULY EXECUTED BY THE PERSONS NAMED,
FILED WITH THE SECURITIES AND EXCHANGE COMMISSION AS AN EXHIBIT TO FORM 10-K, ON
BEHALF OF SUCH PERSONS, ALL IN THE CAPACITIES AND ON THE DATE STATED, SUCH
PERSONS INCLUDING A MAJORITY OF THE DIRECTORS OF THE COMPANY.
 
                                                    By  /s/CELIA A. COLBERT
                                                           CELIA A. COLBERT
                                                          (ATTORNEY-IN-FACT)
                                                                   

<PAGE>   1
 
                                                                   EXHIBIT 99(A)
 
                       FINANCIAL STATEMENTS AND EXHIBITS
                      REQUIRED BY FORM 11-K ANNUAL REPORT
        PURSUANT TO SECTION 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934
 
                           COMMISSION FILE NO. 1-3305
 
                             ---------------------
 
              MERCK & CO., INC. EMPLOYEE SAVINGS AND SECURITY PLAN
                            (FULL TITLE OF THE PLAN)
 
                               MERCK & CO., INC.
                                  P.O. BOX 100
                   WHITEHOUSE STATION, NEW JERSEY 08889-0100
             (NAME OF ISSUER OF THE SECURITIES HELD PURSUANT TO THE
            PLAN AND THE ADDRESS OF ITS PRINCIPAL EXECUTIVE OFFICE)
<PAGE>   2
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Merck & Co., Inc.:
 
     We have audited the accompanying Statements of Net Assets Available for
Benefits of the Merck & Co., Inc. Employee Savings and Security Plan as of
December 31, 1996 and 1995, and the related Statement of Changes in Net Assets
Available for Benefits for the year ended December 31, 1996. These financial
statements and the schedules referred to below are the responsibility of the
Plan's management. Our responsibility is to express an opinion on these
financial statements and schedules based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the net assets available for benefits of the Plan as
of December 31, 1996 and 1995, and the changes in its net assets available for
benefits for the year ended December 31, 1996, in conformity with generally
accepted accounting principles.
 
     Our audits were performed for the purpose of forming an opinion on the
basic financial statements taken as a whole. The supplemental Schedules of
Assets Held for Investment Purposes and Reportable Transactions are presented
for purposes of additional analysis and are not a required part of the basic
financial statements but are supplementary information required by the
Department of Labor's Rules and Regulations for Reporting and Disclosure under
the Employee Retirement Income Security Act of 1974. The fund information in the
Statements of Net Assets Available for Benefits and the Statement of Changes in
Net Assets Available for Benefits is presented for purposes of additional
analysis rather than to present the net assets available for plan benefits and
changes in net assets available for plan benefits of each fund. The supplemental
schedules and fund information have been subjected to the auditing procedures
applied in the audits of the basic financial statements and, in our opinion, are
fairly stated in all material respects in relation to the basic financial
statements taken as a whole.
 
                                                  ARTHUR ANDERSEN LLP
 
New York, New York
May 21, 1997
 
                                        1
<PAGE>   3
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                               MERCK COMMON STOCK FUND
                                             ---------------------------
                                                (NON-                                      FIDELITY      FIDELITY      FIDELITY
                                             PARTICIPANT    (PARTICIPANT     FIDELITY       EQUITY-       GROWTH       GROWTH &
                                              DIRECTED;      DIRECTED;       MAGELLAN       INCOME        COMPANY       INCOME
                                TOTAL        SEE NOTE 1)    SEE NOTE 1)        FUND          FUND          FUND        PORTFOLIO
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
DECEMBER 31, 1996                                                                    (PARTICIPANT DIRECTED; SEE NOTE 1)
- ---------------------------                                                ------------------------------------------------------
<S>                         <C>              <C>            <C>            <C>            <C>           <C>           <C>
Assets:
  Investments at market
    value.................. $1,606,821,436   $204,709,495   $876,254,437   $145,105,856   $24,777,615   $43,649,523   $62,317,069
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
  Receivables
    Employer's
      contribution.........      2,625,228      1,286,362        520,058        200,830        46,992       101,859       129,949
    Participants'
      contributions........      5,866,877             --      3,755,053        621,829       106,181       187,053       267,050
    Accrued interest and
      dividends............        210,593             --         72,001             --            --            --            --
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
      Total receivables....      8,702,698      1,286,362      4,347,112        822,659       153,173       288,912       396,999
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
Net assets available for
  benefits................. $1,615,524,134   $205,995,857   $880,601,549   $145,928,515   $24,930,788   $43,938,435   $62,714,068
                            ==============   ============   ============   ============   ===========   ===========   ===========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        2
<PAGE>   4
 
<TABLE>
<CAPTION>
                                                                                                                     FIDELITY
                                               FIDELITY                                                FIDELITY     RETIREMENT 
                                 FIDELITY     RETIREMENT     FIDELITY      FIDELITY      FIDELITY     RETIREMENT    GOVERNMENT 
                              INTERMEDIATE     GROWTH          OTC        OVERSEAS      BALANCED        MONEY         MONEY   
                                BOND FUND        FUND        PORTFOLIO       FUND          FUND         MARKET        MARKET 
                              ------------   -----------   -----------   -----------   -----------   -----------   ----------- 
DECEMBER 31, 1996                 (PARTICIPANT DIRECTED; SEE NOTE 1)
- ---------------------------  -------------------------------------------------------------------------------------------------
<S>                        <C>            <C>           <C>           <C>           <C>           <C>           <C>
Assets:
  Investments at market       $ 13,088,728   $13,878,448   $25,261,544   $22,079,860   $46,168,307   $37,299,452   $40,403,016
    value..................     ----------    ----------    ----------    ----------    ----------    ----------    ----------

  Receivables
    Employer's
      contribution.........         26,252        34,390        63,005        50,667        52,242        27,827        37,541
    Participants'
      contributions........         56,090        59,474       108,254        94,620       197,847       159,841       173,141
    Accrued interest and
      dividends............             --            --            --            --            --            --            --
                                ----------    ----------    ----------    ----------    ----------    ----------    ----------
      Total receivables....         82,342        93,864       171,259       145,287       250,089       187,668       210,682
                                ----------    ----------    ----------    ----------    ----------    ----------    ----------
Net assets available for
  benefits.................   $ 13,171,070   $13,972,312   $25,432,803   $22,225,147   $46,418,396   $37,487,120   $40,613,698
                                ==========    ==========    ==========    ==========    ==========    ==========    ========== 
</TABLE>     
 

<TABLE>
<CAPTION>                        FIDELITY                    
                                U.S. EQUITY   PARTICIPANTS'  
                                  INDEX          LOAN       
                                PORTFOLIO      ACCOUNT      
                               -----------   ------------   
DECEMBER 31, 1996             (PARTICIPANT DIRECTED; SEE NOTE 1)   
- ------------------------      ----------------------------------
<S>                            <C>           <C>            
Assets:
Investments at market 
    value..................    $18,771,886   $ 33,056,200   
                                ----------     ----------   
  Receivables
    Employer's
      contribution.........         47,254             --   
    Participants'
      contributions........         80,444             --   
    Accrued interest and
      dividends............             --        138,592   
                                ----------     ----------   
      Total receivables....        127,698        138,592   
                                ----------     ----------   
Net assets available for
  benefits.................    $18,899,584   $ 33,194,792   
                                ==========     ==========   
</TABLE>
<PAGE>   5
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                               MERCK COMMON STOCK FUND
                                             ---------------------------
                                                (NON-                                      FIDELITY      FIDELITY      FIDELITY
                                             PARTICIPANT    (PARTICIPANT     FIDELITY       EQUITY-       GROWTH       GROWTH &
                                              DIRECTED;      DIRECTED;       MAGELLAN       INCOME        COMPANY       INCOME
                                TOTAL        SEE NOTE 1)    SEE NOTE 1)        FUND          FUND          FUND        PORTFOLIO
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
DECEMBER 31, 1995                                                                    (PARTICIPANT DIRECTED; SEE NOTE 1)         
- ---------------------------                                                ------------------------------------------------------
<S>                         <C>              <C>            <C>            <C>            <C>           <C>           <C>
Assets:
  Investments at market
    value.................. $1,310,187,757   $162,413,187   $749,525,828   $144,381,469   $11,810,154   $25,894,841   $30,827,770
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
  Receivables
    Employer's
      contribution.........      2,395,939      1,191,980        481,823        234,083        31,626        76,191        82,420
    Participants'
      contributions........      5,258,171             --      3,521,557        678,359        55,489       121,664       144,841
    Accrued interest and
      dividends............        117,021             --             --             --            --            --            --
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
      Total receivables....      7,771,131      1,191,980      4,003,380        912,442        87,115       197,855       227,261
                            --------------   ------------   ------------   ------------   -----------   -----------   -----------
Net assets available for
  benefits................. $1,317,958,888   $163,605,167   $753,529,208   $145,293,911   $11,897,269   $26,092,696   $31,055,031
                             =============    ===========    ===========    ===========    ==========    ==========    ==========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        4
<PAGE>   6
 
<TABLE>
<CAPTION>
                                                                                                                  FIDELITY
                                            FIDELITY                                                FIDELITY     RETIREMENT
                              FIDELITY     RETIREMENT     FIDELITY      FIDELITY      FIDELITY     RETIREMENT    GOVERNMENT
                            INTERMEDIATE     GROWTH          OTC        OVERSEAS      BALANCED        MONEY         MONEY
                             BOND FUND        FUND        PORTFOLIO       FUND          FUND         MARKET        MARKET
                            ------------   -----------   -----------   -----------   -----------   -----------   -----------

DECEMBER 31, 1995                                            (PARTICIPANT DIRECTED; SEE NOTE 1)
- ---------------------------                     ----------------------------------------------------------------------------
<S>                         <C>            <C>           <C>           <C>           <C>           <C>           <C>
Assets:
  Investments at market
    value.................. $ 10,005,333   $11,431,417   $13,252,190   $13,137,278   $47,696,317   $23,490,236   $30,212,509
                              ----------    ----------    ----------    ----------    ----------    ----------    ----------
  Receivables
    Employer's
      contribution.........       25,157        35,460        46,242        40,252        59,180        26,355        36,658
    Participants'
      contributions........       47,009        53,709        62,264        61,724       224,095       110,366       141,950
    Accrued interest and
      dividends............           --            --            --            --            --            --            --
                              ----------    ----------    ----------    ----------    ----------    ----------    ----------
      Total receivables....       72,166        89,169       108,506       101,976       283,275       136,721       178,608
                              ----------    ----------    ----------    ----------    ----------    ----------    ----------
Net assets available for
  benefits.................  $10,077,499   $11,520,586   $13,360,696   $13,239,254   $47,979,592   $23,626,957   $30,391,117
                              ==========    ==========    ==========    ==========    ==========    ==========    ==========

<CAPTION>



                                                FIDELITY
                                               U.S. EQUITY   PARTICIPANTS'
                                                  INDEX          LOAN
                                                PORTFOLIO      ACCOUNT
                                               -----------   ------------

DECEMBER 31, 1995                           (PARTICIPANT DIRECTED; SEE NOTE 1)  
- ---------------------------                 -----------------------------
<S>                                            <C>           <C>
Assets:
  Investments at market
    value..................                    $ 7,479,999   $ 28,629,229
                                                ----------     ----------
  Receivables
    Employer's
      contribution.........                         28,512             --
    Participants'
      contributions........                         35,144             --
    Accrued interest and
      dividends............                             --        117,021
                                                ----------     ----------
      Total receivables....                         63,656        117,021
                                                ----------     ----------
Net assets available for
  benefits.................                    $ 7,543,655   $ 28,746,250
                                                ==========     ==========


</TABLE>

                                        5
<PAGE>   7
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
           STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                               MERCK COMMON STOCK FUND
                                              --------------------------
                                                 (NON-                                     FIDELITY      FIDELITY      FIDELITY
                                              PARTICIPANT    (PARTICIPANT    FIDELITY       EQUITY-       GROWTH       GROWTH &
                                               DIRECTED;      DIRECTED;      MAGELLAN       INCOME        COMPANY       INCOME
                                 TOTAL        SEE NOTE 1)    SEE NOTE 1)       FUND          FUND          FUND        PORTFOLIO
                             --------------   ------------   -----------   ------------   -----------   -----------   -----------
YEAR ENDED DECEMBER 31, 1996
- ----------------------------                                               ---------------------------------------------
<S>                          <C>              <C>            <C>           <C>            <C>           <C>           <C>
Additions to net assets
  attributed to:
  Investment income (loss)
    Net appreciation
      (depreciation) in
      market value of
      investments........... $  211,138,860   $ 37,853,024   $164,408,456  $ (7,440,273)  $ 2,111,751   $ 3,343,969   $ 5,750,034
    Interest................      2,754,651        128,219     1,389,039        388,007        50,134       121,890       121,870
    Dividends...............     41,228,538            105         3,541     23,170,398     1,371,557     1,874,117     2,623,427
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
      Total income on
        investments.........    255,122,049     37,981,348   165,801,036     16,118,132     3,533,442     5,339,976     8,495,331
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
  Contributions to the Plan
    By participants.........     83,226,993             --    33,667,003     13,985,741     2,482,755     5,853,428     6,887,545
    By the employer.........     34,365,225     16,866,802     6,760,612      3,046,129       545,568     1,252,828     1,469,398
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
      Total contributions...    117,592,218     16,866,802    40,427,615     17,031,870     3,028,323     7,106,256     8,356,943
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
      Total additions.......    372,714,267     54,848,150   206,228,651     33,150,002     6,561,765    12,446,232    16,852,274
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
Deductions from net assets
  attributed to:
  Benefits paid to
    participants............    (77,706,159)    (8,121,213)  (40,943,914)    (6,834,744)   (1,333,085)   (2,452,417)   (2,300,592)
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
Transfers among funds and
  plans:
  Net reallocations.........      2,557,138     (4,309,225)  (34,070,632)   (25,534,155)    7,766,827     7,921,643    17,143,938
  Loans to participants.....             --       (735,093)   (9,495,305)    (1,707,823)     (179,279)     (546,013)     (576,802)
  Loan repayments by
    participants............             --        708,071     5,353,541      1,561,324       217,291       476,294       540,219
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
      Net transfers among
        funds and plans.....      2,557,138     (4,336,247)  (38,212,396)   (25,680,654)    7,804,839     7,851,924    17,107,355
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
      Total deductions and
        net transfers
        among funds and
        plans...............    (75,149,021)   (12,457,460)  (79,156,310)   (32,515,398)    6,471,754     5,399,507    14,806,763
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
        Net
      increase/(decrease)...    297,565,246     42,390,690   127,072,341        634,604    13,033,519    17,845,739    31,659,037
Net assets available for
  benefits
        Beginning of year...  1,317,958,888    163,605,167   753,529,208    145,293,911    11,897,269    26,092,696    31,055,031
                             --------------   ------------   ------------  ------------   -----------   -----------   -----------
        End of year......... $1,615,524,134   $205,995,857   $880,601,549  $145,928,515   $24,930,788   $43,938,435   $62,714,068
                             ==============   ============   ============  ============   ===========   ===========   ===========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        6
<PAGE>   8
 
<TABLE>
<CAPTION>

                                                  FIDELITY                                                FIDELITY
                                    FIDELITY     RETIREMENT     FIDELITY      FIDELITY      FIDELITY     RETIREMENT
                                  INTERMEDIATE     GROWTH          OTC        OVERSEAS      BALANCED        MONEY
                                   BOND FUND        FUND        PORTFOLIO       FUND          FUND         MARKET
                                  ------------   -----------   -----------   -----------   -----------   -----------

YEAR ENDED DECEMBER 31, 1996                            (PARTICIPANT DIRECTED; SEE NOTE 1)
- --------------------------------------------------------------------------------------------------------------------
<S>                               <C>            <C>           <C>           <C>           <C>           <C>
Additions to net assets
  attributed to:
  Investment income (loss)
    Net appreciation
      (depreciation) in
      market value of
      investments...........      $   (314,230)  $  (653,011)  $ 1,200,080   $   871,004   $ 1,773,161   $        --
    Interest................            23,452        41,479        59,103        55,061       108,634        49,330
    Dividends...............           730,979     1,703,791     2,788,799     1,345,776     2,174,249     1,414,298
                                   -----------   -----------   -----------   -----------   -----------   -----------
      Total income on
        investments.........           440,201     1,092,259     4,047,982     2,271,841     4,056,044     1,463,628
                                   -----------   -----------   -----------   -----------   -----------   -----------
  Contributions to the Plan
    By participants.........         1,657,185     2,263,591     3,553,123     3,033,651     3,375,413     1,801,530
    By the employer.........           351,850       490,136       733,434       636,209       769,835       367,911
                                   -----------   -----------   -----------   -----------   -----------   -----------
      Total contributions...         2,009,035     2,753,727     4,286,557     3,669,860     4,145,248     2,169,441
                                   -----------   -----------   -----------   -----------   -----------   -----------
      Total additions.......         2,449,236     3,845,986     8,334,539     5,941,701     8,201,292     3,633,069
                                   -----------   -----------   -----------   -----------   -----------   -----------
Deductions from net assets
  attributed to:
  Benefits paid to
    participants............          (885,161)     (451,155)     (958,011)   (1,035,354)   (3,153,689)   (3,820,723)
                                   -----------   -----------   -----------   -----------   -----------   -----------
Transfers among funds and
  plans:
  Net reallocations.........         1,557,736      (929,409)    4,723,825     4,096,832    (6,580,402)   14,123,484
  Loans to participants.....          (120,922)     (196,470)     (265,944)     (247,991)     (469,673)     (364,229)
  Loan repayments by              
    participants............            92,682       182,774       237,698       230,705       441,276       288,562
                                   -----------   -----------   -----------   -----------   -----------   -----------
      Net transfers among
        funds and plans.....         1,529,496      (943,105)    4,695,579     4,079,546    (6,608,799)   14,047,817
                                   -----------   -----------   -----------   -----------   -----------   -----------
      Total deductions and
        net transfers
        among funds and
        plans...............           644,335    (1,394,260)    3,737,568     3,044,192    (9,762,488)   10,227,094
                                   -----------   -----------   -----------   -----------   -----------   -----------
        Net
      increase/(decrease)...         3,093,571     2,451,726    12,072,107     8,985,893    (1,561,196)   13,860,163
Net assets available for
  benefits
        Beginning of year...        10,077,499    11,520,586    13,360,696    13,239,254    47,979,592    23,626,957
                                   -----------   -----------   -----------   -----------   -----------   -----------
        End of year.........      $ 13,171,070   $13,972,312   $25,432,803   $22,225,147   $46,418,396   $37,487,120
                                   ===========   ===========   ===========   ===========   ===========   ===========
<CAPTION>

                              FIDELITY
                             RETIREMENT     FIDELITY
                             GOVERNMENT    U.S. EQUITY   PARTICIPANTS'
                                MONEY         INDEX          LOAN
                               MARKET       PORTFOLIO      ACCOUNT
                             -----------   -----------   ------------

YEAR ENDED DECEMBER 31, 1996     (PARTICIPANT DIRECTED; SEE NOTE 1)
- ---------------------------------------------------------------------
<S>                          <C>           <C>           <C>
Additions to net assets
  attributed to:
  Investment income (loss)
    Net appreciation
      (depreciation) in
      market value of
      investments........... $        --   $ 2,234,895   $         --
    Interest................     177,204        41,229             --
    Dividends...............   1,645,601       381,900             --
                             -----------   -----------    -----------
      Total income on
        investments.........   1,822,805     2,658,024             --
                             -----------   -----------    -----------
  Contributions to the Plan
    By participants.........   2,348,649     2,317,379             --
    By the employer.........     560,721       513,792             --
                             -----------   -----------    -----------
      Total contributions...   2,909,370     2,831,171             --
                             -----------   -----------    -----------
      Total additions.......   4,732,175     5,489,195             --
                             -----------   -----------    -----------
Deductions from net assets
  attributed to:
  Benefits paid to
    participants............  (3,852,910)   (1,049,585)      (513,606)
                             -----------   -----------    -----------
Transfers among funds and
  plans:
  Net reallocations.........  9,550,054     6,899,238        197,384
  Loans to participants.....   (561,476)     (143,038)    15,610,058
  Loan repayments by        
    participants............    354,738       160,119    (10,845,294)
                            -----------   -----------    -----------
      Net transfers among
        funds and plans.....  9,343,316     6,916,319      4,962,148
                            -----------   -----------    -----------
      Total deductions and
        net transfers
        among funds and
        plans...............  5,490,406     5,866,734      4,448,542
                            -----------   -----------    -----------
        Net
      increase/(decrease)... 10,222,581    11,355,929      4,448,542
Net assets available for
  benefits
        Beginning of year... 30,391,117     7,543,655     28,746,250
                            -----------   -----------    -----------
        End of year.........$40,613,698   $18,899,584   $ 33,194,792
                            ===========   ===========    ===========
</TABLE>


                                       1

<PAGE>   9
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
                         NOTES TO FINANCIAL STATEMENTS
 
 1. DESCRIPTION OF THE PLAN:
 
     The Merck & Co., Inc. Employee Savings and Security Plan (the "Plan") was
designed to provide an easy, economical way for employees to become stockholders
of Merck & Co., Inc. (the "Company" or "Merck") as well as a systematic means of
saving and investing for the future. Regular full-time, part-time, and temporary
employees of the Company and of certain wholly-owned subsidiaries as defined by
the Plan document who were not covered by a collective bargaining agreement are
eligible to enroll in the Plan as of the first day of the third month following
their date of hire.
 
     The Plan is administered by a management committee appointed by the Chief
Executive Officer. All costs of administering the Plan are borne by the Company.
 
     CONTRIBUTIONS
 
     Participants may contribute from 2% up to 15% of their base pay. In
addition, the Company matches 75% of employee contributions up to 6% of base pay
per pay period. Company matching contributions are invested according to the
following age parameters:
 
     Under age 50 -- 50% of Company matching contributions is invested in the
Merck Common Stock Fund (Non-participant directed) and 50% is invested in the
funds to which the participant is currently contributing (Participant directed).
 
     Age 50 and above -- Participants have the option to invest all Company
matching contributions in any of the available fund options (Participant
directed).
 
     INVESTMENT OPTIONS
 
     Participants direct the investment of their contributions into any
investment option including the Merck Common Stock Fund (Participant directed).
The following is a brief description of each option:
 
     Merck Common Stock Fund
 
     The Merck Common Stock Fund invests primarily in Merck Common Stock and a
small portion of money market instruments for liquidity. This liquidity allows
for daily trading in the fund. Ownership is measured in units rather than
shares. An investment in this option allows the participant to become a
stockholder and part owner of the Company. The value of the investment can go up
or down depending on general factors affecting the stock market and specific
factors affecting the Company's business. This is neither a mutual fund nor a
diversified or managed investment option. Investing in a non-diversified single
stock involves more investment risk than investing in a diversified fund.
 
     Fidelity Magellan Fund
 
     Funds are invested primarily in domestic and foreign common stock and
securities convertible into common stock. Up to 20% of assets may also be
invested in debt securities of all types and qualities issued by foreign and
domestic issuers if the fund manager believes they have potential for capital
appreciation.
 
                                        8
<PAGE>   10
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
     Fidelity Equity-Income Fund
 
     Funds are invested in income-producing equity securities. Normally, at
least 65% of the fund's assets will be invested in income producing equity
securities. The fund has the flexibility to invest the balance in all types of
domestic and foreign securities, including bonds.
 
     Fidelity Growth Company Fund
 
     Funds are invested primarily in common stock, and securities convertible
into common stock, of companies considered to have above-average growth
characteristics. These characteristics are most often associated with companies
in new and emerging areas of the economy, although the fund may also hold shares
in larger, mature or declining industry firms which have been revitalized.
 
     Fidelity Growth & Income Portfolio
 
     Funds are invested primarily in U.S. and foreign stocks, focusing on those
that pay current dividends and offer potential growth of earnings such as common
stocks, convertible securities, preferred stocks and warrants.
 
     Fidelity Intermediate Bond Fund
 
     This fund seeks high current income by investing in U.S. and foreign
investment grade debt securities rated Baa or better by Moody's or BBB or better
by Standard & Poor's. Investment securities include corporate bonds, mortgage
securities, bank obligations and U.S. government and agency securities, as well
as short-term investments. The fund's dollar-weighted average maturity will
range between three and ten years under normal circumstances.
 
     Fidelity Retirement Growth Fund
 
     Funds are invested primarily in common stocks of domestic or foreign
issuers, although they can be invested in all types of securities. Foreign
securities may involve a higher degree of risk. The fund's emphasis is on the
realization of capital gains rather than on dividend income.
 
     Fidelity OTC Portfolio
 
     Funds are invested primarily in securities traded on the over-the-counter
(OTC) securities market. These are frequently the securities of smaller or newer
companies whose instruments may have limited marketability and may be subject to
more erratic market movement.
 
     Fidelity Overseas Fund
 
     Funds are invested primarily in foreign securities.
 
     Fidelity Balanced Fund
 
     Funds are invested in a broadly diversified portfolio of high-yielding
securities, including common stocks, preferred stocks and bonds. The objective
is to provide a balanced investment in both stocks and bonds, thereby affording
the opportunity for capital growth and current income; however, at least 25% of
total assets will always be invested in fixed-income senior securities.
 
                                        9
<PAGE>   11
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
     Fidelity Retirement Money Market
 
     Funds are invested in high-quality U.S. dollar-denominated money market
instruments of U.S. and foreign issuers. Normally, the fund intends to invest
more than 25% of its total assets in obligations of institutions in the
financial services industry.
 
     Fidelity Retirement Government Money Market
 
     Funds are invested in obligations issued or guaranteed as to principal and
interest by the U.S. government, its agencies or instrumentalities, and in
repurchase agreements secured by these obligations. An investment in the
portfolio is not insured or guaranteed by the U.S. government.
 
     Fidelity U.S. Equity Index Portfolio
 
     Funds are primarily invested in securities of the companies which comprise
the S&P 500 Index.
 
     VESTING
 
     Participants are immediately vested in their contributions, all Company
matching contributions, plus actual earnings thereon.
 
     PLAN TERMINATION
 
     Although it has not expressed any intent to do so, the Company has the
right under the Plan to discontinue its contributions at any time and to
terminate the Plan subject to the provisions of the Employee Retirement Income
Security Act of 1974 (ERISA). In the event of Plan termination, participants
will become fully vested in their account balances.
 
     PARTICIPANTS' LOAN ACCOUNT
 
     Participants may borrow from their account balances with interest charged
at a rate of the prime rate plus 1%. Loan terms range from one to five years or
up to thirty years for the purchase of a primary residence. The minimum loan is
$500 and the maximum loan is the lesser of $50,000 less the highest outstanding
loan balance during the one year period prior to the new loan application date,
or 50% of the participant's account balance less any current outstanding loan.
Activity related to these borrowings is reflected in the Participants' Loan
Account column of the financial statements.
 
     BENEFITS PAID TO PARTICIPANTS
 
     In-service and termination distributions are made throughout the year in
accordance with applicable Plan provisions. At December 31, 1996 and 1995, net
assets available for benefits included distributions in process of payment of
$2,827,505 and $3,314,348, respectively.
 
 2. SUMMARY OF ACCOUNTING POLICIES:
 
     The financial statements of the Plan have been prepared on the accrual
basis of accounting. The investments of the Plan are stated at quoted market
value. Dividend income is recorded on the ex-dividend date. The appreciation in
market value of investments is based on the beginning of the year market value
or value at the time of purchase during the year and is included in the
Statement of Changes in Net Assets Available for Benefits.
 
                                       10
<PAGE>   12
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
     USE OF ESTIMATES
 
     The financial statements are prepared in conformity with generally accepted
accounting principles and, accordingly, include amounts that are based on
management's best estimates and judgments.
 
 3.  INCOME TAXES:
 
     The Plan obtained a tax determination letter from the Internal Revenue
Service on September 18, 1995 indicating that it had been designed in accordance
with applicable sections of the Internal Revenue Code (IRC). The Plan sponsor
believes that the Plan is designed and operated in compliance with the IRC.
 
 4.  OTHER MATTERS:
 
     Net reallocations in 1996 of $2,557,138 consist of $1,641,044 transferred
between the Plan and the Merck & Co., Inc. Employee Stock Purchase and Savings
Plan for employees who changed their status during the year, $709,870 for Medco
employees who were transferred from the Merck-Medco division (which has a
separate savings plan) into the Plan and $206,224 of adjustments to amounts
transferred to Astra Merck (which has a separate plan) in 1995.
 
 5.  SUBSEQUENT EVENTS:
 
     Effective July 1, 1997, Merck will change certain investment choices
offered to Plan participants. Specifically, five new funds will be added while
eight funds, existing as of December 31, 1996, will be eliminated and replaced
with seven similar new funds and one similar existing fund. Investments held in
the eight eliminated funds will automatically transfer to the corresponding
replacement funds. The Plan sponsor anticipates that these fund transfers will
have no effect on the Plan's tax status.
 
                                       11
<PAGE>   13
 
                                                           SCHEDULE I
                                                           EIN:  22-1109110
                                                           PLAN NO.:  001
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
          ITEM 27A -- SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES
 
                               DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                         NUMBER OF
                            NAME OF ISSUER                            UNITS/SHARES AT
                          AND TITLE OF ISSUE                          CLOSE OF PERIOD         COST         CURRENT VALUE
- -------------------------------------------------------------------------------------     ------------     --------------
<S>                                                                   <C>                 <C>              <C>
Merck Common Stock Fund*..............................................    79,602,291      $424,794,757     $1,080,963,932
Fidelity Magellan Fund................................................     1,799,321       126,942,040        145,105,856
Fidelity Equity-Income Fund...........................................       578,529        21,457,652         24,777,615
Fidelity Growth Company Fund..........................................     1,078,874        37,326,607         43,649,523
Fidelity Growth & Income Portfolio....................................     2,027,939        52,361,662         62,317,069
Fidelity Intermediate Bond Fund.......................................     1,298,523        13,244,985         13,088,728
Fidelity Retirement Growth Fund.......................................       802,739        14,422,331         13,878,448
Fidelity OTC Portfolio................................................       772,309        22,880,052         25,261,544
Fidelity Overseas Fund................................................       715,897        20,627,404         22,079,860
Fidelity Balanced Fund................................................     3,279,255        40,896,906         46,168,307
Fidelity Retirement Money Market......................................    37,271,301        37,271,301         37,299,452
Fidelity Retirement Government Money Market...........................    40,403,289        40,403,289         40,403,016
Fidelity U.S. Equity Index Portfolio..................................       696,551        15,501,768         18,771,886
Participants' Loan Account (with interest rates ranging from 8.25% to
  10.0%)..............................................................            --        33,056,200         33,056,200
                                                                                          ------------     --------------
        Total Investments.............................................                    $901,186,954     $1,606,821,436
                                                                                           ===========      =============
</TABLE>
 
- ---------------
* Denotes a party-in-interest to the Plan.
 
                                       12
<PAGE>   14
 
                                                           SCHEDULE II
                                                           EIN:  22-1109110
                                                           PLAN NO.:  001
 
                               MERCK & CO., INC.
 
                       EMPLOYEE SAVINGS AND SECURITY PLAN
 
               ITEM 27D -- SCHEDULE OF REPORTABLE TRANSACTIONS(A)
 
                      FOR THE YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                                                 CURRENT
                                                                                                  VALUE
                                                                                               OF ASSETS ON
       IDENTITY OF PARTY INVOLVED             PURCHASE         SELLING          COST OF        TRANSACTION       NET GAIN/
        AND DESCRIPTION OF ASSET               PRICE            PRICE            ASSET             DATE           (LOSS)
- ----------------------------------------    ------------     ------------     ------------     ------------     -----------
<S>                                         <C>              <C>              <C>              <C>              <C>
Merck Common Stock Fund
   254 purchase transactions............    $107,282,495     $         --     $107,282,495     $107,282,495     $        --
   254 sales transactions...............              --      140,519,057      132,905,449      140,519,057       7,613,608
Fidelity Magellan Fund
   254 purchase transactions............      46,456,997               --       46,456,997       46,456,997              --
   254 sales transactions...............              --       38,292,336       41,818,112       38,292,336      (3,525,776)
</TABLE>
 
- ---------------
(a) Reportable transactions are transactions that, individually or in the
    aggregate, exceed 5% of the Plan's net assets as of the beginning of the
    Plan year.
 
                                       13
<PAGE>   15
 
                                                                      EXHIBIT 23
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
     As independent public accountants, we hereby consent to the incorporation
by reference of our report dated May 21, 1997 included in the financial
statements and exhibits required by Form 11-K Annual Report for the Merck & Co.,
Inc. Employee Savings and Security Plan into the Company's previously filed
Registration Statements on Form S-8 (Nos. 33-21087, 33-21088, 33-36101,
33-40177, 33-51235, 33-53463, 33-64273 and 33-64665), on Form S-4 (No. 33-50667)
and on Form S-3 (Nos. 33-60322, 33-39349, 33-51785, 33-57421 and 333-17045). It
should be noted that we have not audited any financial statements of the Plan
subsequent to December 31, 1996 or performed any audit procedures subsequent to
the date of our report.
 
                                            ARTHUR ANDERSEN LLP
 
New York, New York
June 16, 1997

<PAGE>   1
 
                                                                   EXHIBIT 99(B)
 
                       FINANCIAL STATEMENTS AND EXHIBITS
                      REQUIRED BY FORM 11-K ANNUAL REPORT
        PURSUANT TO SECTION 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934
 
                           COMMISSION FILE NO. 1-3305
 
                             ---------------------
 
           MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
                            (Full title of the plan)
 
                               MERCK & CO., INC.
                                  P.O. BOX 100
                   WHITEHOUSE STATION, NEW JERSEY 08889-0100
             (Name of issuer of the securities held pursuant to the
            plan and the address of its principal executive office)
<PAGE>   2
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Merck & Co., Inc.:
 
     We have audited the accompanying Statements of Net Assets Available for
Benefits of the Merck & Co., Inc. Employee Stock Purchase and Savings Plan as of
December 31, 1996 and 1995, and the related Statement of Changes in Net Assets
Available for Benefits for the year ended December 31, 1996. These financial
statements and the schedules referred to below are the responsibility of the
Plan's management. Our responsibility is to express an opinion on these
financial statements and schedules based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the net assets available for benefits of the Plan as
of December 31, 1996 and 1995, and the changes in its net assets available for
benefits for the year ended December 31, 1996, in conformity with generally
accepted accounting principles.
 
     Our audits were performed for the purpose of forming an opinion on the
basic financial statements taken as a whole. The supplemental Schedules of
Assets Held for Investment Purposes and Reportable Transactions are presented
for purposes of additional analysis and are not a required part of the basic
financial statements but are supplementary information required by the
Department of Labor's Rules and Regulations for Reporting and Disclosure under
the Employee Retirement Income Security Act of 1974. The fund information in the
Statements of Net Assets Available for Benefits and the Statement of Changes in
Net Assets Available for Benefits is presented for purposes of additional
analysis rather than to present the net assets available for plan benefits and
changes in net assets available for plan benefits of each fund. The supplemental
schedules and fund information have been subjected to the auditing procedures
applied in the audits of the basic financial statements and, in our opinion, are
fairly stated in all material respects in relation to the basic financial
statements taken as a whole.
 
                                          ARTHUR ANDERSEN LLP
 
New York, New York
May 21, 1997
 
                                        1
<PAGE>   3
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                                      MERCK COMMON STOCK FUND
                                                     --------------------------
                                                        (NON-                                  FIDELITY    FIDELITY     FIDELITY
                                                     PARTICIPANT   (PARTICIPANT    FIDELITY    EQUITY-      GROWTH      GROWTH &
                                                      DIRECTED;     DIRECTED;      MAGELLAN     INCOME     COMPANY       INCOME
                                         TOTAL       SEE NOTE 1)   SEE NOTE 1)       FUND        FUND        FUND      PORTFOLIO
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
DECEMBER 31, 1996                                                                    (PARTICIPANT DIRECTED; SEE NOTE 1)
- -------------------------------------------------------------------------------   -----------------------------------------------
<S>                                   <C>            <C>           <C>            <C>          <C>        <C>          <C>
Assets:
  Investments at market value........ $200,633,783   $47,040,077   $122,082,571   $7,849,145   $915,537   $1,008,987   $1,986,353
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
  Receivables
    Employer's contribution..........       61,525        61,525             --           --         --           --           --
    Participants' contributions......      312,196            --        260,255       16,059      1,873        2,064        4,064
    Accrued interest and dividends...       19,508            --         13,822           --         --           --           --
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
      Total receivables..............      393,229        61,525        274,077       16,059      1,873        2,064        4,064
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
Net assets available for benefits.... $201,027,012   $47,101,602   $122,356,648   $7,865,204   $917,410   $1,011,051   $1,990,417
                                       ===========    ==========    ===========    =========   ========    =========    =========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        2
<PAGE>   4
 
<TABLE>
<CAPTION>

                                                     FIDELITY                                         FIDELITY
                                       FIDELITY     RETIREMENT   FIDELITY    FIDELITY    FIDELITY    RETIREMENT
                                     INTERMEDIATE     GROWTH        OTC      OVERSEAS    BALANCED       MONEY
                                      BOND FUND        FUND      PORTFOLIO     FUND        FUND        MARKET
                                     ------------   ----------   ---------   --------   ----------   -----------

DECEMBER 31, 1996                                                    (PARTICIPANT DIRECTED; SEE NOTE 1)
- -------------------------------------------------------------  ------------------------------------------------
<S>                                  <S>            <C>          <C>         <C>        <C>          <C>
Assets:
  Investments at market value........  $369,411      $616,783    $719,063    $800,300   $3,807,066   $2,210,381
                                     ------------   ----------   ---------   --------   ----------   -----------
  Receivables
    Employer's contribution..........        --            --          --          --           --           --
    Participants' contributions......       756         1,262       1,471       1,637        7,789        4,522
    Accrued interest and dividends...        --            --          --          --           --           --
                                     ------------   ----------   ---------   --------   ----------   -----------
      Total receivables..............       756         1,262       1,471       1,637        7,789        4,522
                                     ------------   ----------   ---------   --------   ----------   -----------
Net assets available for benefits....  $370,167      $618,045    $720,534    $801,937   $3,814,855   $2,214,903
                                     ===========    ==========   ========    ========    =========   ===========

<CAPTION>
                                         FIDELITY
                                        RETIREMENT     FIDELITY
                                        GOVERNMENT    U.S. EQUITY   PARTICIPANTS'
                                           MONEY         INDEX          LOAN
                                          MARKET       PORTFOLIO      ACCOUNT
                                        -----------   -----------   ------------

DECEMBER 31, 1996                          (PARTICIPANT DIRECTED; SEE NOTE 1)
- --------------------------------------------------------------------------------
<S>                                     <C>           <C>           <C>
Assets:
  Investments at market value........   $4,596,289     $ 508,094     $6,123,726
                                        -----------   -----------   ------------
  Receivables
    Employer's contribution..........           --            --             --
    Participants' contributions......        9,404         1,040             --
    Accrued interest and dividends...           --            --          5,686
                                        -----------   -----------   ------------
      Total receivables..............        9,404         1,040          5,686
                                        -----------   -----------   ------------
Net assets available for benefits....   $4,605,693     $ 509,134     $6,129,412
                                        ===========   ==========    ===========

</TABLE>
 
                                        3
<PAGE>   5
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                                          MERCK COMMON STOCK FUND
                                                         --------------------------
                                                            (NON-                                  FIDELITY   FIDELITY   FIDELITY
                                                         PARTICIPANT   (PARTICIPANT    FIDELITY    EQUITY-     GROWTH    GROWTH &
                                                          DIRECTED;     DIRECTED;      MAGELLAN     INCOME    COMPANY     INCOME
                                             TOTAL       SEE NOTE 1)   SEE NOTE 1)       FUND        FUND       FUND     PORTFOLIO
                                          ------------   -----------   ------------   ----------   --------   --------   ---------
DECEMBER 31, 1995                                                                          (PARTICIPANT DIRECTED, SEE NOTE 1)
- -----------------------------------------                                             --------------------------------------------
<S>                                       <C>            <C>           <C>            <C>          <C>        <C>        <C>
Assets:
  Investments at market value............ $162,873,709   $38,672,420   $100,656,597   $6,961,838   $457,255   $503,394   $989,067
                                          ------------   -----------   ------------   ----------   --------   --------   --------
  Receivables
    Employer's contribution..............       60,176        60,176             --           --         --         --         --
    Participants' contributions..........      299,114            --        251,458       17,392      1,142      1,258      2,471
    Accrued interest and dividends.......        8,025            --          2,339           --         --         --         --
                                          ------------   -----------   ------------   ----------   --------   --------   --------
      Total receivables..................      367,315        60,176        253,797       17,392      1,142      1,258      2,471
                                          ------------   -----------   ------------   ----------   --------   --------   --------
Net assets available for benefits........ $163,241,024   $38,732,596   $100,910,394   $6,979,230   $458,397   $504,652   $991,538
                                          ============   ===========   ============   ==========   ========   ========   ========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        4
<PAGE>   6
 
<TABLE>
<CAPTION>
                                                              
                                                             FIDELITY
                                               FIDELITY     RETIREMENT   FIDELITY    FIDELITY    FIDELITY
                                             INTERMEDIATE     GROWTH        OTC      OVERSEAS    BALANCED
                                               BOND FUND        FUND      PORTFOLIO     FUND        FUND
                                             ------------   ----------   ---------   --------   ----------

DECEMBER 31, 1995                                           (PARTICIPANT DIRECTED; SEE NOTE 1)
- -----------------------------------------    -------------------------------------------------------------
<S>                                          <C>            <C>          <C>         <C>        <C>
Assets:
  Investments at market value............      $299,003      $509,817    $325,866    $577,768   $3,553,980
                                             ------------   ----------   ---------   --------   ----------
  Receivables
    Employer's contribution..............            --            --          --          --           --
    Participants' contributions..........           747         1,274         814       1,443        8,878
    Accrued interest and dividends.......            --            --          --          --           --
                                             ------------   ----------   ---------   --------   ----------
      Total receivables..................           747         1,274         814       1,443        8,878
                                             ------------   ----------   ---------   --------   ----------
Net assets available for benefits........      $299,750      $511,091    $326,680    $579,211   $3,562,858
                                             ===========    ==========   ========    ========    =========


<CAPTION>
                                                              FIDELITY
                                                FIDELITY     RETIREMENT     FIDELITY
                                               RETIREMENT    GOVERNMENT    U.S. EQUITY   PARTICIPANTS'
                                                  MONEY         MONEY         INDEX          LOAN
                                                 MARKET        MARKET       PORTFOLIO      ACCOUNT
                                               -----------   -----------   -----------   -----------

DECEMBER 31, 1995                                      (PARTICIPANT DIRECTED; SEE NOTE 1) 
- -----------------------------------------    -------------------------------------------------------
<S>                                            <C>           <C>           <C>           <C>
Assets:
  Investments at market value............       $ 961,593    $3,735,338     $ 201,511     $4,468,262
                                               -----------   -----------   -----------   -----------
  Receivables
    Employer's contribution..............              --            --            --             --
    Participants' contributions..........           2,402         9,332           503             --
    Accrued interest and dividends.......              --            --            --          5,686
                                               -----------   -----------   -----------   -----------
      Total receivables..................           2,402         9,332           503          5,686
                                               -----------   -----------   -----------   -----------
Net assets available for benefits........       $ 963,995    $3,744,670     $ 202,014     $4,473,948
                                               ===========   ===========   ==========    ===========

</TABLE>




                                       5



















<PAGE>   7
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
           STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                                      MERCK COMMON STOCK FUND
                                                     --------------------------
                                                        (NON-                                  FIDELITY    FIDELITY     FIDELITY
                                                     PARTICIPANT   (PARTICIPANT    FIDELITY    EQUITY-      GROWTH      GROWTH &
                                                      DIRECTED;     DIRECTED;      MAGELLAN     INCOME     COMPANY       INCOME
                                         TOTAL       SEE NOTE 1)   SEE NOTE 1)       FUND        FUND        FUND      PORTFOLIO
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
YEAR ENDED DECEMBER 31, 1996
- -------------------------------------                                             ----------------------------------------
<S>                                   <C>            <C>           <C>            <C>          <C>        <C>          <C>
Additions to net assets attributed
  to:
  Investment income
    Net appreciation (depreciation)
      in market value of
      investments.................... $ 29,967,611   $ 8,250,110   $ 21,487,998   $ (346,882)  $ 77,940   $   68,297   $  179,644
    Interest.........................      454,901        73,102        298,693       28,719      1,488        4,689        4,340
    Dividends........................    2,027,915            --             --    1,159,573     51,407       42,146       84,448
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
      Total income on investments....   32,450,427     8,323,212     21,786,691      841,410    130,835      115,132      268,432
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
  Contributions to the Plan
    By participants..................   11,961,538            --      8,299,607    1,197,695    150,295      242,118      343,905
    By the employer..................    2,196,499     2,196,499             --           --         --           --           --
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
      Total contributions............   14,158,037     2,196,499      8,299,607    1,197,695    150,295      242,118      343,905
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
      Total additions................   46,608,464    10,519,711     30,086,298    2,039,105    281,130      357,250      612,337
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
Deductions from net assets attributed
  to:
  Benefits paid to participants......   (7,181,432)   (1,606,034)    (4,398,057)    (314,137)   (10,389)      (9,912)     (61,394)
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
Transfers among funds and plans:
  Net reallocations..................   (1,641,044)     (343,214)    (2,778,943)    (769,024)   193,092      161,958      444,149
  Loans to participants..............           --      (498,781)    (2,595,391)    (181,630)   (11,229)     (16,151)     (27,899)
  Loan repayments by participants....           --       297,324      1,132,347      111,660      6,409       13,254       31,686
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
      Net transfers among funds and
        plans........................   (1,641,044)     (544,671)    (4,241,987)    (838,994)   188,272      159,061      447,936
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
      Total deductions and net
        transfers among funds and
        plans........................   (8,822,476)   (2,150,705)    (8,640,044)  (1,153,131)   177,883      149,149      386,542
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
        Net increase.................   37,785,988     8,369,006     21,446,254      885,974    459,013      506,399      998,879
Net assets available for benefits
        Beginning of year............  163,241,024    38,732,596    100,910,394    6,979,230    458,397      504,652      991,538
                                      ------------   -----------   ------------   ----------   --------   ----------   ----------
        End of year.................. $201,027,012   $47,101,602   $122,356,648   $7,865,204   $917,410   $1,011,051   $1,990,417
                                      ============   ===========   ============   ==========   ========   ==========   ==========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        6
<PAGE>   8
<TABLE>
<CAPTION>
                                                                                   
                                                         FIDELITY
                                        FIDELITY        RETIREMENT        FIDELITY         FIDELITY         FIDELITY
                                      INTERMEDIATE        GROWTH            OTC            OVERSEAS         BALANCED
                                       BOND FUND           FUND          PORTFOLIO           FUND             FUND
                                      ------------     ------------     ------------     ------------     -------------

YEAR ENDED DECEMBER 31, 1996                              (PARTICIPANT DIRECTED; SEE NOTE 1)
- ----------------------------          ---------------------------------------------------------------------------------
<S>                                   <C>              <C>              <C>              <C>              <C>
Additions to net assets attributed
  to:
  Investment income
    Net appreciation (depreciation)
      in market value of
      investments....................   $(10,372)        $(29,444)        $ 33,364         $ 35,062        $  154,191
    Interest.........................        568            2,604            2,243            3,515            14,229
    Dividends........................     21,886           74,917           75,696           47,665           172,176
                                        --------         --------         --------         --------        ----------
      Total income on investments....     12,082           48,077          111,303           86,242           340,596
                                        --------         --------         --------         --------        ----------
  Contributions to the Plan
    By participants..................    103,352          138,009          162,281          195,125           386,335
    By the employer..................         --               --               --               --                --
                                        --------         --------         --------         --------        ----------
      Total contributions............    103,352          138,009          162,281          195,125           386,335
                                        --------         --------         --------         --------        ----------
      Total additions................    115,434          186,086          273,584          281,367           726,931
                                        --------         --------         --------         --------        ----------
Deductions from net assets attributed
  to:
  Benefits paid to participants......     (2,010)         (35,877)          (6,261)          (5,510)         (143,564)
                                        --------         --------         --------         --------        ----------
Transfers among funds and plans:
  Net reallocations..................    (34,929)         (37,326)         135,028          (45,720)         (295,329)
  Loans to participants..............     (9,647)         (16,555)         (16,186)         (20,858)          (91,680)
  Loan repayments by participants....      1,569           10,626            7,689           13,447            55,639
                                        --------         --------         --------         --------        ----------
      Net transfers among funds and
        plans........................    (43,007)         (43,255)         126,531          (53,131)         (331,370)
                                        --------         --------         --------         --------        ----------
      Total deductions and net
        transfers among funds and
        plans........................    (45,017)         (79,132)         120,270          (58,641)         (474,934)
                                        --------         --------         --------         --------        ----------
        Net increase.................     70,417          106,954          393,854          222,726           251,997
Net assets available for benefits
        Beginning of year............    299,750          511,091          326,680          579,211         3,562,858
                                        --------         --------         --------         --------        ----------
        End of year..................   $370,167         $618,045         $720,534         $801,937        $3,814,855
                                        ========         ========         ========         ========        ==========
 
<CAPTION>
                                                           FIDELITY
                                          FIDELITY        RETIREMENT        FIDELITY
                                         RETIREMENT       GOVERNMENT      U.S. EQUITY     FIDELITY    PARTICIPANTS'
                                           MONEY            MONEY            INDEX      INTERMEDIATE      LOAN
                                           MARKET           MARKET         PORTFOLIO     BOND FUND      ACCOUNT
                                        ------------     ------------     -----------   ------------  ------------

YEAR ENDED DECEMBER 31, 1996                                (PARTICIPANT DIRECTED; SEE NOTE 1)
- ----------------------------            ----------------------------------------------------------------------------------
<S>                                     <C>              <C>              <C>            <C>          <C>
Additions to net assets attributed
  to:
  Investment income
    Net appreciation (depreciation)
      in market value of
      investments....................    $       --       $       --        $ 67,703      $(10,372)   $        --
    Interest.........................         3,376           16,799             536           568             --
    Dividends........................        64,658          223,402           9,941        21,886             --
                                         ----------       ----------        --------      --------     ----------
      Total income on investments....        68,034          240,201          78,180        12,082             --
                                         ----------       ----------        --------      --------     ----------
  Contributions to the Plan
    By participants..................       155,888          473,907         113,021       103,352             --
    By the employer..................            --               --              --            --             --
                                         ----------       ----------        --------      --------     ----------
      Total contributions............       155,888          473,907         113,021       103,352             --
                                         ----------       ----------        --------      --------     ----------
      Total additions................       223,922          714,108         191,201       115,434             --
                                         ----------       ----------        --------      --------     ----------
Deductions from net assets attributed
  to:
  Benefits paid to participants......      (146,511)        (251,017)         (1,982)       (2,010)      (188,777)
                                         ----------       ----------        --------      --------     ----------
Transfers among funds and plans:
  Net reallocations..................     1,176,547          428,261         124,406       (34,929)            --
  Loans to participants..............       (17,795)         (91,146)         (8,552)       (9,647)     3,603,500
  Loan repayments by participants....        14,745           60,817           2,047         1,569     (1,759,259)
                                         ----------       ----------        --------      --------     ----------
      Net transfers among funds and
        plans........................     1,173,497          397,932         117,901       (43,007)     1,844,241
                                         ----------       ----------        --------      --------     ----------
      Total deductions and net
        transfers among funds and
        plans........................     1,026,986          146,915         115,919       (45,017)     1,655,464
                                         ----------       ----------        --------      --------     ----------
        Net increase.................     1,250,908          861,023         307,120        70,417      1,655,464
Net assets available for benefits
        Beginning of year............       963,995        3,744,670         202,014       299,750      4,473,948
                                         ----------       ----------        --------      --------     ----------
        End of year..................    $2,214,903       $4,605,693        $509,134      $370,167    $ 6,129,412
                                         ==========       ==========        ========      ========     ==========
                                                       
</TABLE>

                                        7
<PAGE>   9
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
                         NOTES TO FINANCIAL STATEMENTS
 
1. DESCRIPTION OF THE PLAN:
 
     The Merck & Co., Inc. Employee Stock Purchase and Savings Plan (the "Plan")
was designed to provide an easy, economical way for employees to become
stockholders of Merck & Co., Inc. (the "Company" or "Merck") as well as a
systematic means of saving and investing for the future. Generally, any regular
full-time, part-time, or temporary employee of the Company who is a U.S.
resident covered by a collective bargaining agreement providing for
participation in this Plan as defined by the Plan document, and has completed
one year of employment, is eligible to participate.
 
     The Plan is administered by a management committee appointed by the Chief
Executive Officer. All costs of administering the Plan are borne by the Company.
 
     CONTRIBUTIONS
 
     Depending on the terms of the applicable collective bargaining agreements,
participants may contribute from 2% up to either 10% or 15% of their base pay
per pay period. In addition, the Company will match 50% of employee
contributions up to 5% of base pay per pay period, or contributions of a
predetermined dollar amount negotiated with each bargaining group, whichever is
less. Pursuant to current collective bargaining agreements, the Company match is
subject to a monthly cap of $60. Company matching contributions are invested
entirely in the Merck Common Stock Fund (Non-participant directed), and may not
be reallocated into any other investment option.
 
     INVESTMENT OPTIONS
 
     Participants direct the investment of their contributions into any
investment option including the Merck Common Stock Fund (Participant directed).
The following is a brief description of each option:
 
     Merck Common Stock Fund
 
     The Merck Common Stock Fund invests primarily in Merck Common Stock and a
small portion of money market instruments for liquidity. This liquidity allows
for daily trading in the fund. Ownership is measured in units rather than
shares. An investment in this option allows the participant to become a
stockholder and part owner of the Company. The value of the investment can go up
or down depending on general factors affecting the stock market and specific
factors affecting the Company's business. This is neither a mutual fund nor a
diversified or managed investment option. Investing in a non-diversified single
stock involves more investment risk than investing in a diversified fund.
 
     Fidelity Magellan Fund
 
     Funds are invested primarily in domestic and foreign common stock and
securities convertible into common stock. Up to 20% of assets may also be
invested in debt securities of all types and qualities issued by foreign and
domestic issuers if the fund manager believes they have potential for capital
appreciation.
 
     Fidelity Equity-Income Fund
 
     Funds are invested in income-producing equity securities. Normally, at
least 65% of the fund's assets will be invested in income producing equity
securities. The fund has the flexibility to invest the balance in all types of
domestic and foreign securities, including bonds.
 
     Fidelity Growth Company Fund
 
     Funds are invested primarily in common stock, and securities convertible
into common stock, of companies considered to have above-average growth
characteristics. These characteristics are most often associated with companies
in new and emerging areas of the economy, although the fund may also hold shares
in larger, mature or declining industry firms which have been revitalized.
 
                                        8
<PAGE>   10
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
     Fidelity Growth & Income Portfolio
 
     Funds are invested primarily in U.S. and foreign stocks, focusing on those
that pay current dividends and offer potential growth of earnings such as common
stocks, convertible securities, preferred stocks and warrants.
 
     Fidelity Intermediate Bond Fund
 
     This fund seeks high current income by investing in U.S. and foreign
investment grade debt securities rated Baa or better by Moody's or BBB or better
by Standard & Poor's. Investment securities include corporate bonds, mortgage
securities, bank obligations and U.S. government and agency securities, as well
as short-term investments. The fund's dollar-weighted average maturity will
range between three and ten years under normal circumstances.
 
     Fidelity Retirement Growth Fund
 
     Funds are invested primarily in common stocks of domestic or foreign
issuers, although they can be invested in all types of securities. Foreign
securities may involve a higher degree of risk. The fund's emphasis is on the
realization of capital gains rather than on dividend income.
 
     Fidelity OTC Portfolio
 
     Funds are invested primarily in securities traded on the over-the-counter
(OTC) securities market. These are frequently the securities of smaller or newer
companies whose instruments may have limited marketability and may be subject to
more erratic market movement.
 
     Fidelity Overseas Fund
 
     Funds are invested primarily in foreign securities.
 
     Fidelity Balanced Fund
 
     Funds are invested in a broadly diversified portfolio of high-yielding
securities, including common stocks, preferred stocks and bonds. The objective
is to provide a balanced investment in both stocks and bonds, thereby affording
the opportunity for capital growth and current income; however, at least 25% of
total assets will always be invested in fixed-income senior securities.
 
     Fidelity Retirement Money Market
 
     Funds are invested in high-quality U.S. dollar-denominated money market
instruments of U.S. and foreign issuers. Normally, the fund intends to invest
more than 25% of its total assets in obligations of institutions in the
financial services industry.
 
     Fidelity Retirement Government Money Market
 
     Funds are invested in obligations issued or guaranteed as to principal and
interest by the U.S. government, its agencies or instrumentalities, and in
repurchase agreements secured by these obligations. An investment in the
portfolio is not insured or guaranteed by the U.S. government.
 
     Fidelity U.S. Equity Index Portfolio
 
     Funds are primarily invested in securities of the companies which comprise
the S&P 500 Index.
 
     VESTING
 
     Participants are immediately vested in their contributions, all Company
matching contributions, plus actual earnings thereon.
 
                                        9
<PAGE>   11
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
     PLAN TERMINATION
 
     Although it has not expressed any intent to do so, the Company has the
right under the Plan to discontinue its contributions at any time and to
terminate the Plan subject to the provisions of the Employee Retirement Income
Security Act of 1974 (ERISA). In the event of Plan termination, participants
will become fully vested in their account balances.
 
     PARTICIPANTS' LOAN ACCOUNT
 
     Participants may borrow from their account balances with interest charged
at a rate of the prime rate plus 1%. Loan terms range from one to five years or
up to thirty years for the purchase of a primary residence. The minimum loan is
$500 and the maximum loan is the lesser of $50,000 less the highest outstanding
loan balance during the one year period prior to the new loan application date,
or 50% of the participant's account balance less any current outstanding loan.
Activity related to these borrowings is reflected in the Participants' Loan
Account column of the financial statements.
 
     BENEFITS PAID TO PARTICIPANTS
 
     In-service and termination distributions are made throughout the year in
accordance with applicable Plan provisions. At December 31, 1996 and 1995, net
assets available for benefits included distributions in process of payment of
$610,665 and $772,218, respectively.
 
2.  SUMMARY OF ACCOUNTING POLICIES:
 
     The financial statements of the Plan have been prepared on the accrual
basis of accounting. The investments of the Plan are stated at quoted market
value. Dividend income is recorded on the ex-dividend date. The appreciation in
market value of investments is based on the beginning of the year market value
or value at the time of purchase during the year and is included in the
Statement of Changes in Net Assets Available for Benefits.
 
     USE OF ESTIMATES
 
     The financial statements are prepared in conformity with generally accepted
accounting principles and, accordingly, include amounts that are based on
management's best estimates and judgments.
 
3.  INCOME TAXES:
 
     The Plan obtained a tax determination letter from the Internal Revenue
Service on September 18, 1995 indicating that it had been designed in accordance
with applicable sections of the Internal Revenue Code (IRC). The Plan sponsor
believes that the Plan is designed and operated in compliance with the IRC.
 
4.  OTHER MATTERS:
 
     Net reallocations in 1996 of ($1,641,044) consist of transfers between the
Plan and the Merck & Co., Inc. Employee Savings and Security Plan for employees
who changed their status during the year.
 
 5.  SUBSEQUENT EVENTS:
 
     Effective July 1, 1997, Merck will change certain investment choices
offered to Plan participants. Specifically, five new funds will be added while
eight funds, existing as of December 31, 1996, will be eliminated and replaced
with seven similar new funds and one similar existing fund. Investments held in
the eight eliminated funds will automatically transfer to the corresponding
replacement funds. The Plan sponsor anticipates that these fund transfers will
have no effect on the Plan's tax status.
 
                                       10
<PAGE>   12
 
                                                           SCHEDULE I
                                                           EIN: 22-1109110
                                                           PLAN NO.: 004
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
          ITEM 27A -- SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES
 
                               DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                         NUMBER OF
                           NAME OF ISSUER                             UNITS/SHARES AT
                         AND TITLE OF ISSUE                           CLOSE OF PERIOD        COST        CURRENT VALUE
- --------------------------------------------------------------------  ----------------    -----------    -------------
<S>                                                                   <C>                 <C>            <C>
Merck Common Stock Fund*............................................     12,454,686       $68,920,950    $169,122,648
Fidelity Magellan Fund..............................................         97,342         6,971,698       7,849,145
Fidelity Equity-Income Fund.........................................         21,377           790,658         915,537
Fidelity Growth Company Fund........................................         24,941           890,602       1,008,987
Fidelity Growth & Income Portfolio..................................         64,642         1,679,128       1,986,353
Fidelity Intermediate Bond Fund.....................................         36,651           376,343         369,411
Fidelity Retirement Growth Fund.....................................         35,680           641,488         616,783
Fidelity OTC Portfolio..............................................         21,987           651,686         719,063
Fidelity Overseas Fund..............................................         25,954           747,537         800,300
Fidelity Balanced Fund..............................................        270,441         3,354,497       3,807,066
Fidelity Retirement Money Market....................................      2,191,435         2,191,435       2,210,381
Fidelity Retirement Government Money Market.........................      4,596,614         4,596,614       4,596,289
Fidelity U.S. Equity Index Portfolio................................         18,854           423,690         508,094
Participants' Loan Account (with interest rates ranging from 9.5% to
  10.0%)............................................................             --         6,123,726       6,123,726
                                                                                          -----------    ------------
        Total Investments...........................................                      $98,360,052    $200,633,783
                                                                                          ===========    ============
</TABLE>
 
- ---------------
* Denotes a party-in-interest to the Plan.
 
                                       11
<PAGE>   13
 
                                                           SCHEDULE II
                                                           EIN: 22-1109110
                                                           PLAN NO.: 004
 
                               MERCK & CO., INC.
 
                    EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN
 
               ITEM 27D -- SCHEDULE OF REPORTABLE TRANSACTIONS(a)
 
                      FOR THE YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                                                CURRENT
                                                                                                 VALUE
          IDENTITY OF PARTY INVOLVED              PURCHASE      SELLING        COST OF        OF ASSETS ON
           AND DESCRIPTION OF ASSET                PRICE         PRICE          ASSET       TRANSACTION DATE    NET GAIN
- -----------------------------------------------  ----------    ----------    -----------    ----------------    ---------
<S>                                              <C>           <C>           <C>            <C>                 <C>
Merck Common Stock Fund
    246 purchase transactions..................  $15,546,578   $       --    $15,546,578      $ 15,546,578      $      --
    243 sales transactions.....................          --    15,493,214      9,038,716        15,493,214      6,454,498
</TABLE>
 
- ---------------
 
(a) Reportable transactions are transactions that, individually or in the
    aggregate, exceed 5% of the Plan's net assets as of the beginning of the
    Plan year.
 
                                       12
<PAGE>   14
 
                                                                      EXHIBIT 23
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
     As independent public accountants, we hereby consent to the incorporation
by reference of our report dated May 21, 1997 included in the financial
statements and exhibits required by Form 11-K Annual Report for the Merck & Co.,
Inc. Employee Stock Purchase and Savings Plan into the Company's previously
filed Registration Statements on Form S-8 (Nos. 33-21087, 33-21088, 33-36101,
33-40177, 33-51235, 33-53463, 33-64273 and 33-64665), on Form S-4 (No. 33-50667)
and on Form S-3 (Nos. 33-60322, 33-39349, 33-51785, 33-57421, and 333-17045). It
should be noted that we have not audited any financial statements of the Plan
subsequent to December 31, 1996 or performed any audit procedures subsequent to
the date of our report.
 
                                            ARTHUR ANDERSEN LLP
 
New York, New York
June 16, 1997

<PAGE>   1
 
                                                                   EXHIBIT 99(c)
 
                       FINANCIAL STATEMENTS AND EXHIBITS
                      REQUIRED BY FORM 11-K ANNUAL REPORT
        PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
 
                           COMMISSION FILE NO. 1-3305
 
                             ---------------------
 
                   HUBBARD FARMS, INC. EMPLOYEE SAVINGS PLAN
                            (FULL TITLE OF THE PLAN)
 
                               MERCK & CO., INC.
                                  P.O. BOX 100
                   WHITEHOUSE STATION, NEW JERSEY 08889-0100
             (NAME OF ISSUER OF THE SECURITIES HELD PURSUANT TO THE
            PLAN AND THE ADDRESS OF ITS PRINCIPAL EXECUTIVE OFFICE)
<PAGE>   2
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To Merck & Co., Inc.:
 
     We have audited the accompanying Statements of Net Assets Available for
Benefits of the Hubbard Farms, Inc. Employee Savings Plan as of December 31,
1996 and 1995, and the related Statement of Changes in Net Assets Available for
Benefits for the year ended December 31, 1996. These financial statements and
the schedules referred to below are the responsibility of the Plan's management.
Our responsibility is to express an opinion on these financial statements and
schedules based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the net assets available for benefits of the Plan as
of December 31, 1996 and 1995, and the changes in its net assets available for
benefits for the year ended December 31, 1996, in conformity with generally
accepted accounting principles.
 
     Our audits were performed for the purpose of forming an opinion on the
basic financial statements taken as a whole. The supplemental Schedules of
Assets Held for Investment Purposes and Reportable Transactions are presented
for purposes of additional analysis and are not a required part of the basic
financial statements but are supplementary information required by the
Department of Labor's Rules and Regulations for Reporting and Disclosure under
the Employee Retirement Income Security Act of 1974. The fund information in the
Statements of Net Assets Available for Benefits and the Statement of Changes in
Net Assets Available for Benefits is presented for purposes of additional
analysis rather than to present the net assets available for plan benefits and
changes in net assets available for plan benefits of each fund. The supplemental
schedules and fund information have been subjected to the auditing procedures
applied in the audits of the basic financial statements and, in our opinion, are
fairly stated in all material respects in relation to the basic financial
statements taken as a whole.
 
                                                  ARTHUR ANDERSEN LLP
 
New York, New York
May 21, 1997
 
                                        1
<PAGE>   3
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                                                                                                      FIDELITY
                                                     MERCK      FIDELITY   FIDELITY     FIDELITY                      GROWTH
                                                     COMMON     MAGELLAN   BALANCED   INTERMEDIATE   FIDELITY DAILY   COMPANY
                                        TOTAL        STOCK        FUND       FUND      BOND FUND      INCOME TRUST     FUND
                                      ----------   ----------   --------   --------   ------------   --------------   -------
<S>                                   <C>          <C>          <C>        <C>        <C>            <C>              <C>
DECEMBER 31, 1996
Assets:
  Investments at market value.......  $3,669,124   $2,004,018   $763,082   $287,499     $195,624        $--           $29,154
                                      ----------   ----------   --------   --------     --------      --------        -------
  Receivables
    Employer's contribution.........       2,636        1,187       548        240           156         --               94
    Participants' contributions.....       8,390        3,702     1,819        835           458         --              315
    Dividends receivable............       9,934        9,934        --         --            --         --               --
                                      ----------   ----------   --------   --------     --------      --------        -------
        Total receivables...........      20,960       14,823     2,367      1,075           614         --              409
                                      ----------   ----------   --------   --------     --------      --------        -------
Net assets available for benefits...  $3,690,084   $2,018,841   $765,449   $288,574     $196,238        $--           $29,563
                                      ==========   ==========   ========   ========     ========      ========        =======
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        2
<PAGE>   4
 
<TABLE>
<CAPTION>
     
                                         FIDELITY                            FIDELITY                                            
                                         GROWTH &   FIDELITY    FIDELITY    RETIREMENT    PARTICIPANTS'
                                          INCOME       OTC      OVERSEAS    GOVERNMENT        LOAN
DECEMBER 31, 1996                        PORTFOLIO  PORTFOLIO     FUND     MONEY MARKET     ACCOUNT
- -----------------                        --------   ---------   --------   ------------   -----------
<S>                                      <C>        <C>         <C>        <C>            <C>
Assets:
  Investments at market value.......     $44,415     $ 8,845     $4,059      $233,731       $ 98,697
                                         -------     -------     ------      --------       --------
  Receivables
    Employer's contribution.........          79          30         23           279             --
    Participants' contributions.....         354         115         73           719             --
    Dividends receivable............     
                                         
        Total receivables...........         433         145         96           998             --
                                         --------    -------    -------      --------       -------- 
Net assets available for benefits...     $44,848     $ 8,990     $4,155      $234,729       $ 98,697
                                         ========    =======    =======      ========       ======== 
</TABLE>



                                        3
<PAGE>   5
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
                 STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                                   MERCK      FIDELITY   FIDELITY     FIDELITY                      PARTICIPANTS'
                                                   COMMON     MAGELLAN   BALANCED   INTERMEDIATE   FIDELITY DAILY       LOAN
                                      TOTAL        STOCK        FUND       FUND      BOND FUND      INCOME TRUST      ACCOUNT
                                    ----------   ----------   --------   --------   ------------   --------------   ------------
<S>                                 <C>          <C>          <C>        <C>        <C>            <C>              <C>
DECEMBER 31, 1995
Assets:
  Investments at market value.....  $2,553,713   $1,351,070   $592,921   $220,473     $160,011        $190,826        $ 38,412
                                    ----------   ----------   --------   --------   ----------   -------------      ----------
  Receivables
    Participants' contributions...       3,495        1,318       981        449           199             548              --
    Dividends receivable..........       6,937        6,937        --         --            --              --              --
                                    ----------   ----------   --------   --------   ----------   -------------      ----------
        Total receivables.........      10,432        8,255       981        449           199             548              --
                                    ----------   ----------   --------   --------   ----------   -------------      ----------
Net assets available for
  benefits........................  $2,564,145   $1,359,325   $593,902   $220,922     $160,210        $191,374        $ 38,412
                                     =========    =========   ========   ========   ==========     ===========      ==========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        4
<PAGE>   6
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
           STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
 
<TABLE>
<CAPTION>
                                                                                                                          FIDELITY
                                                          MERCK      FIDELITY   FIDELITY     FIDELITY                     GROWTH
                                                          COMMON     MAGELLAN   BALANCED   INTERMEDIATE   FIDELITY DAILY  COMPANY
                                             TOTAL        STOCK        FUND       FUND      BOND FUND      INCOME TRUST    FUND
                                           ----------   ----------   --------   --------   ------------   --------------  -------
<S>                                        <C>          <C>          <C>        <C>        <C>            <C>             <C>
YEAR ENDED DECEMBER 31, 1996
Additions to net assets attributed to:
  Investment income
    Net appreciation (depreciation) in
      market value of investments......... $  326,227   $  340,947   $(24,779)  $12,001      $ (5,228)      $       --    $  696
    Interest..............................      6,241        2,393     2,045        534           279               --        34
    Dividends.............................    174,721       34,644   101,564     12,317        11,921               58     1,081
                                           ----------   ----------   --------   --------   ------------   --------------  -------
      Total income on investments.........    507,189      377,984    78,830     24,852         6,972               58     1,811
                                           ----------   ----------   --------   --------   ------------   --------------  -------
  Contributions to the Plan
    By the employer.......................    185,467       83,271    43,015     19,251        11,295               77     5,159
    By participants.......................    572,269      256,651   138,740     63,166        32,040               --    16,458
                                           ----------   ----------   --------   --------   ------------   --------------  -------
    Total Contributions...................    757,736      339,922   181,755     82,417        43,335               77    21,617
                                           ----------   ----------   --------   --------   ------------   --------------  -------
      Total additions.....................  1,264,925      717,906   260,585    107,269        50,307              135    23,428
                                           ----------   ----------   --------   --------   ------------   --------------  -------
Deductions from net assets attributed to:
  Benefits paid to participants...........   (138,986)     (70,054)  (37,280)   (27,042)           --               --      (117) 
                                           ----------   ----------   --------   --------   ------------   --------------  -------
Transfers among funds:
    Net reallocations.....................         --       22,495   (21,651)    (3,695)       (3,239)        (191,509)    6,187
    Loans to participants.................         --      (23,927)  (39,164)   (10,998)      (12,739)              --        --
    Loan repayments by participants.......         --       13,096     9,057      2,118         1,699               --        65
                                           ----------   ----------   --------   --------   ------------   --------------  -------
      Net transfers among funds...........         --       11,664   (51,758)   (12,575)      (14,279)        (191,509)    6,252
                                           ----------   ----------   --------   --------   ------------   --------------  -------
      Total deductions and net transfers
        among funds.......................   (138,986)     (58,390)  (89,038)   (39,617)      (14,279)        (191,509)    6,135
                                           ----------   ----------   --------   --------   ------------   --------------  -------
        Net increase (decrease)...........  1,125,939      659,516   171,547     67,652        36,028         (191,374)   29,563
Net assets available for benefits
        Beginning of year.................  2,564,145    1,359,325   593,902    220,922       160,210          191,374        --
                                           ----------   ----------   --------   --------   ------------   --------------  -------
        End of year....................... $3,690,084   $2,018,841   $765,449   $288,574     $196,238       $       --    $29,563
                                            =========    =========   ========   ========   ===========    ============    ========
</TABLE>
 
  The accompanying Notes to Financial Statements are an integral part of this
                              financial statement.
 
                                        5
<PAGE>   7
 
<TABLE>
<CAPTION>
                                                FIDELITY
                                                 GROWTH      FIDELITY      FIDELITY       FIDELITY       PARTICIPANTS'
                                                & INCOME        OTC        OVERSEAS      REL GOV'T           LOAN
                                                PORTFOLIO    PORTFOLIO       FUND       MONEY MARKET        ACCOUNT
                                                 --------     ---------     --------     ------------     -------------
<S>                                            <C>          <C>           <C>          <C>              <C>
YEAR ENDED DECEMBER 31, 1996
Additions to net assets attributed to:
  Investment income
    Net appreciation (depreciation) in
      market value of investments.........     $ 2,391       $   185       $   14        $     --         $      --
    Interest..............................          --            --           --             956                --
    Dividends.............................       1,537           815          222          10,562                --
                                               -------       -------       ------        --------         ---------
      Total income on investments.........       3,928         1,000          236          11,518                --
                                               -------       -------       ------        --------         ---------
  Contributions to the Plan
    By the employer.......................       4,542         1,584          913          16,360                --
    By participants.......................      12,902         5,182        3,005          44,125                --
                                               -------       -------       ------        --------         ---------
    Total Contributions...................      17,444         6,766        3,918          60,485                --
                                               -------       -------       ------        --------         ---------
      Total additions.....................      21,372         7,766        4,154          72,003                --
                                               -------       -------       ------        --------         ---------
Deductions from net assets attributed to:
  Benefits paid to participants...........         (56)           --          (34)         (3,996)             (407)
                                               -------       -------       ------        --------         ---------
Transfers among funds:
    Net reallocations.....................      23,532         1,224           35         166,621                --
    Loans to participants.................          --            --           --          (3,372)           90,200
    Loan repayments by participants.......          --            --           --           3,473           (29,508)
                                               -------       -------       ------        --------         ---------
      Net transfers among funds...........      23,532         1,224           35         166,722            60,692
                                               -------       -------       ------        --------         ---------
      Total deductions and net transfers
        among funds.......................      23,476         1,224            1         162,726            60,285
                                               -------       -------       ------        --------         ---------
        Net increase (decrease)...........      44,848         8,990        4,155         234,729            60,285
Net assets available for benefits
        Beginning of year.................          --            --           --              --            38,412
                                               -------       -------       ------        --------         ---------
        End of year.......................     $44,848       $ 8,990       $4,155        $234,729         $  98,697
                                               =======        ======       ======        ========         =========
</TABLE>

                                       6
                                          
                                          
                                          
                                          
<PAGE>   8
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
                         NOTES TO FINANCIAL STATEMENTS
 
 1. DESCRIPTION OF THE PLAN:
 
     The Hubbard Farms, Inc. (the "Company") Employee Savings Plan (the "Plan")
was designed to provide an easy, economical way for employees to become
stockholders of Merck & Co., Inc., the parent of the Company, as well as a
systematic means of saving and investing for the future. Regular full-time and
part-time employees of the Company and its domestic wholly-owned subsidiaries as
defined by the Plan document are eligible to participate in the Plan the 1st of
January or the 1st of July following their date of hire.
 
     The Plan is administered by a management committee appointed by the Board
of Directors of the Company. All costs of administering the Plan are borne by
the Company.
 
     CONTRIBUTIONS
 
     Participants may contribute from 2% up to 15% of their base pay. Effective
January 1, 1996, a Company matching provision was added to the Plan which
matches 50% of employee contributions up to 5% of base pay per pay period.
 
     INVESTMENT OPTIONS
 
     Participants direct the investment of their contributions in 10% increments
into any investment option, including Merck Common Stock (Participant directed).
The following is a brief description of the options available in 1996.
 
     Merck Common Stock
 
     This portfolio consists of shares of Merck Common Stock. The value of the
investment can go up or down depending on general factors affecting the stock
market and specific factors affecting the Company's business. This is neither a
mutual fund nor a diversified or managed investment option. Investing in a
non-diversified single stock involves more investment risk than investing in a
diversified fund.
 
     Fidelity Magellan Fund
 
     Funds are invested primarily in domestic and foreign common stock and
securities convertible into common stock. Up to 20% of assets may also be
invested in debt securities of all types and qualities issued by foreign and
domestic issuers if the fund manager believes they have potential for capital
appreciation.
 
     Fidelity Balanced Fund
 
     Funds are invested in broadly diversified portfolio of high-yielding
securities, including common stocks, preferred stocks and bonds. The objective
is to provide a balanced investment in both stocks and bonds, thereby affording
the opportunity for capital growth and current income; however, at least 25% of
total assets will always be invested in fixed-income senior securities.
 
     Fidelity Intermediate Bond Fund
 
     This fund seeks high current income by investing in U.S. and foreign
investment grade debt securities rated Baa or better by Moody's or BBB or better
by Standard & Poor's. Investment securities include corporate bonds, mortgage
securities, bank obligations and U.S. government and agency securities, as well
as short-term investments. The fund's dollar-weighted average maturity will
range between three and ten years under normal circumstances.
 
     Fidelity Daily Income Trust
 
     Funds are invested in a broad range of both government and private issuer
short term U.S. dollar denominated money market instruments maturing in one year
or less. This investment option was eliminated
 
                                        7
<PAGE>   9
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
from the Plan effective January 2, 1996 and the fund balance was transferred
into a new fund, the Fidelity Retirement Government Money Market. The new fund
is described below.
 
     Fidelity Growth Company Fund
 
     Funds are invested primarily in common stock, and securities convertible
into common stock, of companies considered to have above-average growth
characteristics. These characteristics are most often associated with companies
in new and emerging areas of the economy, although the fund may also hold shares
in larger, mature or declining industry firms which have been revitalized.
 
     THIS FUND WAS ADDED TO THE PLAN EFFECTIVE JANUARY 1, 1996.
 
     Fidelity Growth & Income Portfolio
 
     Funds are invested primarily in U.S. and foreign stocks, focusing on those
that pay current dividends and offer potential growth of earnings such as common
stocks, convertible securities, preferred stocks and warrants.
 
     THIS FUND WAS ADDED TO THE PLAN EFFECTIVE JANUARY 1, 1996.
 
     Fidelity OTC Portfolio
 
     Funds are invested primarily in securities traded on the over-the-counter
(OTC) securities market. These are frequently the securities of smaller or newer
companies whose instruments may have limited marketability and may be subject to
more erratic market movement.
 
     THIS FUND WAS ADDED TO THE PLAN EFFECTIVE JANUARY 1, 1996.
 
     Fidelity Overseas Fund
 
     Funds are invested primarily in foreign securities.
 
     THIS FUND WAS ADDED TO THE PLAN EFFECTIVE JANUARY 1, 1996.
 
     Fidelity Retirement Government Money Market
 
     Funds are invested in obligations issued or guaranteed as to principal and
interest by the U.S. government, its agencies or instrumentalities, and in
repurchase agreements secured by these obligations. An investment in the
portfolio is not insured or guaranteed by the U.S. government.
 
     THIS FUND WAS ADDED TO THE PLAN EFFECTIVE JANUARY 1, 1996.
 
     VESTING
 
     Participants are immediately vested in their contributions plus actual
earnings thereon. Participants become vested in Company matching contributions
after two years of service with the Company.
 
     FORFEITURES
 
     Any forfeitures by participants are used by the Company to reduce its
future matching contributions.
 
                                        8
<PAGE>   10
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
                  NOTES TO FINANCIAL STATEMENTS -- (CONTINUED)
 
     PLAN TERMINATION
 
     Although it has not expressed any intent to do so, the Company has the
right under the Plan to discontinue its contributions at any time and to
terminate the Plan subject to the provisions of the Employee Retirement Income
Security Act of 1974 (ERISA). In the event of Plan termination, participants
will become fully vested in their account balances.
 
     PARTICIPANTS' LOAN ACCOUNT
 
     Participants may borrow against their account balances with interest
charged at a rate of the prime rate plus 1%. Loan terms range from one to five
years or up to thirty years for the purchase of a primary residence. The minimum
loan is $1,000 and the maximum loan is the lesser of $50,000 less the highest
outstanding loan balance during the one year period prior to the new loan
application date, or 50% of the participant's account balance less any current
outstanding loan. Activity related to these borrowings is reflected in the
Participants' Loan Account column of the financial statements.
 
     BENEFITS PAID TO PARTICIPANTS
 
     In-service and termination distributions are made throughout the year in
accordance with applicable Plan provisions. At December 31, 1996 and 1995, net
assets available for benefits included distributions in process of payment of
$874 and $27,437, respectively.
 
 2. SUMMARY OF ACCOUNTING POLICIES:
 
     The financial statements of the Plan have been prepared on the accrual
basis of accounting. The investments of the Plan are stated at quoted market
value. Dividend income is recorded on the ex-dividend date. The appreciation in
market value of investments is based on the beginning of the year market value
or value at the time of purchase during the year and is included in the
Statement of Changes in Net Assets Available for Benefits.
 
     USE OF ESTIMATES
 
     The financial statements are prepared in conformity with generally accepted
accounting principles and, accordingly, include amounts that are based on
management's best estimates and judgments.
 
 3. INCOME TAXES:
 
     The Plan obtained a tax determination letter from the Internal Revenue
Service on January 31, 1996 indicating that it had been designed in accordance
with applicable sections of the Internal Revenue Code (IRC). The Plan sponsor
believes that the Plan is designed and operated in compliance with the IRC.
 
                                        9
<PAGE>   11
 
                                                           SCHEDULE I
                                                           EIN:  02-0314630
                                                           PLAN NO.:  008
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
          ITEM 27A -- SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES
 
                               DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                       NUMBER OF
                           NAME OF ISSUER                              SHARES AT
                         AND TITLE OF ISSUE                         CLOSE OF PERIOD          COST          CURRENT VALUE
- -----------------------------------------------------------------------------------       ----------       -------------
<S>                                                                 <C>                   <C>              <C>
Merck Common Stock*.................................................      25,168          $1,138,171        $ 2,004,018
Fidelity Magellan Fund..............................................       9,462             691,697            763,082
Fidelity Balanced Fund..............................................      20,419             263,218            287,499
Fidelity Intermediate Bond Fund.....................................      19,407             198,720            195,624
Fidelity Growth Company Fund........................................         721              28,518             29,154
Fidelity Growth & Income Fund Portfolio.............................       1,445              42,028             44,415
Fidelity OTC Portfolio..............................................         270               8,660              8,845
Fidelity Overseas Fund..............................................         132               4,047              4,059
Fidelity Retirement Government Money Market.........................     233,731             233,731            233,731
Participants' Loan Account (With interest rates ranging from 6.5% to
  10.0%)............................................................          --              98,697             98,697
                                                                                          ----------       ------------
        Total Investments...........................................                      $2,707,487        $ 3,669,124
                                                                                           =========       ============
</TABLE>
 
- ---------------
* Denotes a party-in-interest to the Plan.
 
                                       10
<PAGE>   12
 
                                                           SCHEDULE II
                                                           EIN:  02-0314630
                                                           PLAN NO.:  008
 
                              HUBBARD FARMS, INC.
 
                             EMPLOYEE SAVINGS PLAN
 
               ITEM 27D -- SCHEDULE OF REPORTABLE TRANSACTIONS(A)
 
                      FOR THE YEAR ENDED DECEMBER 31, 1996
 
<TABLE>
<CAPTION>
                                                                                                  CURRENT
                                                                                                   VALUE
              IDENTITY OF PARTY INVOLVED                  PURCHASE    SELLING     COST OF       OF ASSETS ON        NET
               AND DESCRIPTION OF ASSET                    PRICE       PRICE       ASSET      TRANSACTION DATE     GAIN
- -------------------------------------------------------   --------    --------    --------    ----------------    -------
<S>                                                       <C>         <C>         <C>         <C>                 <C>
Merck Common Stock
    83 purchase transactions...........................   $407,428    $     --    $407,428        $407,428        $    --
    19 sales transactions..............................        --       95,427      57,809          95,427         37,618
Fidelity Magellan Fund
    80 purchase transactions...........................   305,049           --     305,049         305,049             --
    23 sales transactions..............................        --      110,109      98,571         110,109         11,538
Fidelity Balanced Fund
    71 purchase transactions...........................    98,279           --      98,279          98,279             --
    17 sales transactions..............................        --       43,255      40,934          43,255          2,321
Fidelity Daily Income Trust
    18 purchase transactions...........................       135           --         135             135             --
     1 sales transactions..............................        --      190,754     190,754         190,754             --
Fidelity Retirement Government Money Market
    80 purchase transactions...........................   266,489           --     266,489         266,489             --
    17 sales transactions..............................        --       32,863      32,863          32,863             --
</TABLE>
 
- ---------------
(a) Reportable transactions are transactions that, individually or in the
    aggregate, exceed 5% of the Plan's net assets as of the beginning of the
    Plan year.
 
                                       11
<PAGE>   13
 
                                                                      EXHIBIT 23
 
                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
     As independent public accountants, we hereby consent to the incorporation
by reference of our report dated May 21, 1997 included in the financial
statements and exhibits required by Form 11-K Annual Report for the Hubbard
Farms, Inc. Employee Savings Plan into Merck & Co., Inc.'s previously filed
Registration Statements on Form S-8 (Nos. 33-21087, 33-21088, 33-36101,
33-40177, 33-51235, 33-53463, 33-64273 and 33-64665), and Form S-4 (No.
33-50667) and on Form S-3 (Nos. 33-60322, 33-39349, 33-51785, 33-57421 and
333-17045). It should be noted that we have not audited any financial statements
of the Plan subsequent to December 31, 1996 or performed any audit procedures
subsequent to the date of our report.
 
                                            ARTHUR ANDERSEN LLP
 
New York, New York
June 16, 1997


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