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) 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 (the "Plan") as of December 31, 1998 and 1997, and the related statement of changes in net assets available for benefits for the year ended December 31, 1998. 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, 1998 and 1997, and the changes in its net assets available for benefits for the year ended December 31, 1998, 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 7, 1999 1 3 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS MERCK COMMON STOCK FUND ----------------------------- (NON- T. ROWE FIDELITY PARTICIPANT (PARTICIPANT PRICE EQUITY- DIRECTED; SEE DIRECTED; SEE BLUE CHIP INCOME TOTAL NOTE 1) NOTE 1) GROWTH FUND FUND ----- ------------- ------------- ----------- -------- DECEMBER 31, 1998 - -------------------------------------------------------- --------------------- Assets: Investments at market value........................... $366,805,677 $52,208,941 $254,671,562 $14,973,705 $2,176,087 ------------ ----------- ------------ ----------- ---------- Receivables Employer's contribution............................. 66,729 35,945 22,381 2,095 360 Participants' contributions......................... 237,677 -- 197,392 11,606 1,687 Accrued interest and dividends...................... 1,102,289 187,665 905,266 -- -- ------------ ----------- ------------ ----------- ---------- Total receivables................................. 1,406,695 223,610 1,125,039 13,701 2,047 ------------ ----------- ------------ ----------- ---------- Net assets available for benefits....................... $368,212,372 $52,432,551 $255,796,601 $14,987,406 $2,178,134 ============ =========== ============ =========== ========== The accompanying notes to financial statements are an integral part of this financial statement. 2 4 FIDELITY THE GEORGE VANGUARD GROWTH & T. ROWE PRICE T. ROWE PRICE PUTNAM U.S. GROWTH INCOME NEW INCOME MID-CAP EUROPACIFIC FUND OF PORTFOLIO PORTFOLIO FUND GROWTH FUND GROWTH FUND BOSTON A ----------- --------- ------------- ------------- ----------- ---------- DECEMBER 31, 1998 (PARTICIPANT DIRECTED; SEE NOTE 1) - ---------------------------------------------------------------------------------------------------------------------------------- Assets: Investments at market value............ $3,771,723 $5,366,261 $1,461,033 $1,827,382 $1,889,995 $5,652,596 ---------- ---------- ---------- ---------- ---------- ---------- Receivables Employer's contribution.............. 744 881 287 354 367 834 Participants' contributions.......... 2,923 4,159 1,132 1,416 1,465 4,381 Accrued interest and dividends....... -- -- -- -- -- -- ---------- ---------- ---------- ---------- ---------- ---------- Total receivables.................. 3,667 5,040 1,419 1,770 1,832 5,215 ---------- ---------- ---------- ---------- ---------- ---------- Net assets available for benefits........ $3,775,390 $5,371,301 $1,462,452 $1,829,152 $1,891,827 $5,657,811 ========== ========== ========== ========== ========== ========== FIDELITY VANGUARD RETIREMENT SPARTAN U.S. FIDELITY U.S. GROWTH MONEY EQUITY INDEX LOW-PRICED PORTFOLIO MARKET FUND STOCK FUND ----------- ---------- ------------ ---------- DECEMBER 31, 1998 (PARTICIPANT DIRECTED; SEE NOTE 1) - ------------------------------------------------------------------------------------------------ Assets: Investments at market value........... $3,771,723 $10,010,154 $1,868,618 $436,243 ---------- ----------- ---------- -------- Receivables Employer's contribution............. 744 1,448 334 140 Participants' contributions......... 2,923 7,759 1,448 338 Accrued interest and dividends...... -- -- -- -- ---------- ----------- ---------- -------- Total receivables................. 3,667 9,207 1,782 478 ---------- ----------- ---------- -------- Net assets available for benefits....... $3,775,390 $10,019,361 $1,870,400 $436,721 ========== =========== ========== ======== 3 5 TEMPLETON FRANKLIN PUTNAM DEVELOPING T. ROWE PRICE SMALL CAP VOYAGER MARKETS DIVIDEND PARTICIPANTS' GROWTH FUND I FUND A TRUST I GROWTH FUND LOAN ACCOUNT ------------- ------- ---------- ------------- ------------- DECEMBER 31, 1998 - ------------------------------------------------------------------------------------------------------------------------------------ Assets: $550,170 $1,100,487 $204,899 $687,684 $7,948,137 Investments at market value........................... -------- ---------- -------- -------- ---------- Receivables Employer's contribution............................. 173 180 93 113 -- Participants' contributions......................... 426 853 159 533 -- Accrued interest and dividends...................... -- -- -- -- 9,358 -------- ---------- -------- -------- ---------- Total receivables................................. 599 1,033 252 646 9,358 -------- ---------- -------- -------- ---------- Net assets available for benefits....................... $550,769 $1,101,520 $205,151 $688,330 $7,957,495 ======== ========== ======== ======== ========== 4 6 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS MERCK COMMON STOCK FUND ----------------------------- (NON- T. ROWE FIDELITY PARTICIPANT (PARTICIPANT PRICE FIDELITY EQUITY- DIRECTED; SEE DIRECTED; SEE BLUE CHIP MAGELLAN INCOME TOTAL NOTE 1) NOTE 1) GROWTH FUND FUND FUND ----- ------------- ------------- ----------- -------- -------- DECEMBER 31, 1997 - ------------------------------------------ --------------------------------- Assets: Investments at market value............. $269,920,909 $49,466,644 $173,227,643 $11,198,335 $ -- $1,895,866 ------------ ----------- ------------ ----------- ----------- ---------- Receivables Employer's contribution............... 77,521 77,521 -- -- -- -- Participants' contributions........... 360,190 -- 292,723 18,923 -- 3,204 Accrued interest and dividends........ 962,735 211,323 735,968 -- -- -- ------------ ----------- ------------ ----------- ----------- ---------- Total receivables................... 1,400,446 288,844 1,028,691 18,923 -- 3,204 ------------ ----------- ------------ ----------- ----------- ---------- Net assets available for benefits......... $271,321,355 $49,755,488 $174,256,334 $11,217,258 $ -- $1,899,070 ============ =========== ============ =========== =========== ========== The accompanying notes to financial statements are an integral part of this financial statement. 5 7 FIDELITY FIDELITY FIDELITY VANGUARD GROWTH GROWTH & T. ROWE PRICE FIDELITY RETIREMENT U.S. GROWTH COMPANY INCOME NEW INCOME INTERMEDIATE GROWTH PORTFOLIO FUND PORTFOLIO FUND BOND FUND FUND ----------- -------- --------- ------------- ------------ ---------- DECEMBER 31, 1997 (PARTICIPANT DIRECTED; SEE NOTE 1) - ----------------------------------------------------------------------------------------------------------------------------------- Assets: Investments at market value............. $2,006,198 $ -- $3,664,353 $966,177 $ -- $ -- ---------- -------- ---------- -------- -------- -------- Receivables Employer's contribution............... -- -- -- -- -- -- Participants' contributions........... 3,390 -- 6,192 1,633 -- -- Accrued interest and dividends........ -- -- -- -- -- -- ---------- -------- ---------- -------- -------- -------- Total receivables................... 3,390 -- 6,192 1,633 -- -- ---------- -------- ---------- -------- -------- -------- Net assets available for benefits......... $2,009,588 $ -- $3,670,545 $967,810 $ -- $ -- ========== ======== ========== ======== ======== ======== T. ROWE PRICE VANGUARD FIDELITY FIDELITY MID-CAP U.S. GROWTH OTC EUROPACIFIC OVERSEAS GROWTH FUND PORTFOLIO PORTFOLIO GROWTH FUND FUND ------------- ----------- --------- ----------- -------- DECEMBER 31, 1997 (PARTICIPANT DIRECTED; SEE NOTE 1) - -------------------------------------------------------------------------------------------------------------------- Assets: Investments at market value............. $1,591,041 $2,006,198 $ -- $1,349,190 $ -- ---------- ---------- -------- ---------- -------- Receivables Employer's contribution............... -- -- -- -- -- Participants' contributions........... 2,689 3,390 -- 2,280 -- Accrued interest and dividends........ -- -- -- -- -- ---------- ---------- -------- ---------- -------- Total receivables................... 2,689 3,390 -- 2,280 -- ---------- ---------- -------- ---------- -------- Net assets available for benefits......... $1,593,730 $2,009,588 $ -- $1,351,470 $ -- ========== ========== ======== ========== ======== 6 8 THE GEORGE FIDELITY FIDELITY PUTNAM FIDELITY RETIREMENT RETIREMENT SPARTAN FIDELITY FUND OF BALANCED MONEY GOVERNMENT U.S. EQUITY LOW-PRICED BOSTON A FUND MARKET MONEY MARKET INDEX FUND STOCK FUND DECEMBER 31, 1997 ---------- -------- ---------- ------------ ----------- ---------- ----------------------------------------------------------------------------------------------------------------------------- Assets: Investments at market value............. $4,889,792 $ -- $9,317,599 $ -- $1,076,594 $460,669 ---------- -------- ---------- -------- ---------- -------- Receivables Employer's contribution............... -- -- -- -- -- -- Participants' contributions........... 8,263 -- 15,745 -- 1,819 778 Accrued interest and dividends........ -- -- -- -- -- -- ---------- -------- ---------- -------- ---------- -------- Total receivables................... 8,263 -- 15,745 -- 1,819 778 ---------- -------- ---------- -------- ---------- -------- Net assets available for benefits......... $4,898,055 $ -- $9,333,344 $ -- $1,078,413 $461,447 ========== ======== ========== ======== ========== ======== TEMPLETON THE GEORGE FRANKLIN PUTNAM DEVELOPING PUTNAM T. ROWE PRICE SMALL CAP VOYAGER MARKETS FUND OF DIVIDEND PARTICIPANTS' GROWTH FUND I FUND A TRUST I BOSTON A GROWTH FUND LOAN ACCOUNT DECEMBER 31, 1997 ------------- ------- ---------- ---------- -------------- ------------- ----------------------------------------------------------------------------------------------------------------------------------- Assets: Investments at market value............. $492,967 $463,264 $250,691 $4,889,792 $302,591 $7,301,295 -------- -------- -------- ---------- -------- ---------- Receivables Employer's contribution............... -- -- -- -- -- -- Participants' contributions........... 833 783 424 8,263 511 -- Accrued interest and dividends........ -- -- -- -- -- 15,444 -------- -------- -------- ---------- -------- ---------- Total receivables................... 833 783 424 8,263 511 15,444 -------- -------- -------- ---------- -------- ---------- Net assets available for benefits......... $493,800 $464,047 $251,115 $4,898,055 $303,102 $7,316,739 ======== ======== ======== ========== ======== ========== 7 9 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS MERCK COMMON STOCK FUND ----------------------------- (NON- PARTICIPANT (PARTICIPANT T. ROWE PRICE FIDELITY DIRECTED; SEE DIRECTED; SEE BLUE CHIP EQUITY- TOTAL NOTE 1) NOTE 1) GROWTH FUND INCOME FUND ----- ------------- ------------- ------------- ----------- YEAR ENDED DECEMBER 31, 1998 - --------------------------- ---------------------- Additions to net assets attributed to: Investment income Net appreciation (depreciation) in market value of investments................................. $ 90,404,944 $ 7,502,221 $ 77,336,318 $ 3,065,873 $ 117,433 Interest......................................... 680,316 83,269 459,741 43,489 4,545 Dividends........................................ 6,353,557 785,812 3,300,319 239,713 120,389 ------------ ----------- ------------ ----------- ---------- Total investment income (loss)................. 97,438,817 8,371,302 81,096,378 3,349,075 242,367 ------------ ----------- ------------ ----------- ---------- Contributions to the Plan By participants.................................. 16,195,706 -- 10,776,108 1,270,416 252,057 By the employer.................................. 3,308,056 2,030,182 945,031 84,384 14,563 ------------ ----------- ------------ ----------- ---------- Total contributions............................ 19,503,762 2,030,182 11,721,139 1,354,800 266,620 ------------ ----------- ------------ ----------- ---------- Total additions................................ 116,942,579 10,401,484 92,817,517 4,703,875 508,987 ------------ ----------- ------------ ----------- ---------- Deductions from net assets attributed to: Benefits paid to participants...................... (18,779,373) (3,460,117) (10,504,664) (545,448) (109,094) ------------ ----------- ------------ ----------- ---------- Transfers among funds and Plans: Net reallocations.................................. (1,272,189) (4,402,680) 29,322 (384,290) (111,900) Loans to participants.............................. -- (222,872) (2,767,081) (176,340) (24,931) Loan repayments by participants.................... -- 361,248 1,965,173 172,351 16,002 ------------ ----------- ------------ ----------- ---------- Net transfers among funds and Plans............ (1,272,189) (4,264,304) (772,586) (388,279) (120,829) ------------ ----------- ------------ ----------- ---------- Total deductions and net transfers among funds and Plans.................................... (20,051,562) (7,724,421) (11,277,250) (933,727) (229,923) ------------ ----------- ------------ ----------- ---------- Net increase (decrease)...................... 96,891,017 2,677,063 81,540,267 3,770,148 279,064 Net assets available for benefits Beginning of year............................ 271,321,355 49,755,488 174,256,334 11,217,258 1,899,070 ------------ ----------- ------------ ----------- ---------- End of year.................................. $368,212,372 $52,432,551 $255,796,601 $14,987,406 $2,178,134 ============ =========== ============ =========== ========== The accompanying notes to financial statements are an integral part of this financial statement. 8 10 FIDELITY THE GEORGE FIDELITY VANGUARD GROWTH & T. ROWE PRICE T. ROWE PRICE EUROPACIFIC PUTNAM RETIREMENT U.S. GROWTH INCOME NEW INCOME MID-CAP GROWTH FUND OF MONEY PORTFOLIO PORTFOLIO FUND GROWTH FUND FUND BOSTON A MARKET ----------- --------- ------------- ------------- ----------- ----------- ----------- YEAR ENDED DECEMBER 31, 1998 (PARTICIPANT DIRECTED; SEE NOTE 1) - ---------------------------- ------------------------------------------------------------------------------------------------ Additions to net assets attributed to: Investment income Net appreciation (depreciation) in market value of investments............. $ 670,827 $ 890,582 $ (38,252) $ 273,536 $ 140,946 $ 18,498 $ -- Interest.................... 11,068 13,084 3,621 6,782 6,032 15,351 22,950 Dividends................... 233,851 275,020 97,329 37,887 97,579 511,805 469,628 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Total investment income (loss).................. 915,746 1,178,686 62,698 318,205 244,557 545,654 492,578 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Contributions to the Plan By participants............. 573,324 689,069 224,952 264,321 296,175 400,805 760,678 By the employer............. 27,190 33,379 10,280 13,073 13,692 34,405 63,133 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Total contributions........ 600,514 722,448 235,232 277,394 309,867 435,210 823,811 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Total additions............ 1,516,260 1,901,134 297,930 595,599 554,424 980,864 1,316,389 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Deductions from net assets attributed to: Benefits paid to participants................ (81,429) (269,218) (148,512) (32,802) (17,689) (252,623) (3,179,889) ---------- ---------- ---------- ---------- ---------- ---------- ----------- Transfers among funds and Plans: Net reallocations............. 333,755 72,952 356,102 (335,106) 5,640 22,742 2,603,617 Loans to participants......... (42,528) (62,720) (21,773) (17,682) (29,721) (48,279) (140,446) Loan repayments by participants................ 39,744 58,608 10,895 25,413 27,703 57,052 86,346 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Net transfers among funds and Plans............... 330,971 68,840 345,224 (327,375) 3,622 31,515 2,549,517 ---------- ---------- ---------- ---------- ---------- ---------- ----------- Total deductions and net transfers among funds and Plans................ 249,542 (200,378) 196,712 (360,177) (14,067) (221,108) (630,372) ---------- ---------- ---------- ---------- ---------- ---------- ----------- Net increase (decrease).. 1,765,802 1,700,756 494,642 235,422 540,357 759,756 686,017 Net assets available for benefits Beginning of year........ 2,009,588 3,670,545 967,810 1,593,730 1,351,470 4,898,055 9,333,344 ---------- ---------- ---------- ---------- ---------- ---------- ----------- End of year.............. $3,775,390 $5,371,301 $1,462,452 $1,829,152 $1,891,827 $5,657,811 $10,019,361 ========== ========== ========== ========== ========== ========== =========== 11 FIDELITY TEMPLETON SPARTAN LOW-PRICED FRANKLIN PUTNAM DEVELOPING T. ROWE PRICE U.S. EQUITY STOCK SMALL CAP VOYAGER MARKETS DIVIDEND PARTICIPANTS' INDEX FUND FUND GROWTH FUND I FUND A TRUST I GROWTH FUND LOAN ACCOUNT YEAR ENDED DECEMBER 31, 1998 ----------- ---------- ------------- ------- ---------- ------------- ------------- - ---------------------------- ------------------------------------------------------------------------------- Additions to net assets attributed to: Investment income Net appreciation (depreciation) in market value of investments............. $ 329,934 $ (28,609) $ 12,977 $ 109,462 $(43,884) $ 47,082 $ -- Interest.................... 5,516 420 1,258 1,421 734 1,035 -- Dividends................... 31,778 34,748 7,777 73,542 4,571 31,809 -- ---------- --------- -------- ---------- -------- -------- ----------- Total investment income (loss).................. 367,228 6,559 22,012 184,425 (38,579) 79,926 -- ---------- --------- -------- ---------- -------- -------- ----------- Contributions to the Plan By participants............. 250,241 91,370 124,072 99,374 65,747 56,997 -- By the employer............. 12,994 5,048 6,042 6,764 3,718 4,178 -- ---------- --------- -------- ---------- -------- -------- ----------- Total contributions........ 263,235 96,418 130,114 106,138 69,465 61,175 -- ---------- --------- -------- ---------- -------- -------- ----------- Total additions............ 630,463 102,977 152,126 290,563 30,886 141,101 -- ---------- --------- -------- ---------- -------- -------- ----------- Deductions from net assets attributed to: Benefits paid to participants................ (32,988) (1,671) (15,437) (1,418) (696) (17,064) (108,614) ---------- --------- -------- ---------- -------- -------- ----------- Transfers among funds and Plans: Net reallocations............. 202,779 (128,089) (72,321) 350,099 (71,583) 256,772 -- Loans to participants......... (25,827) (306) (12,885) (10,222) (6,869) (318) 3,610,800 Loan repayments by participants................ 17,560 2,363 5,486 8,451 2,298 4,737 (2,861,430) ---------- --------- -------- ---------- -------- -------- ----------- Net transfers among funds and Plans............... 194,512 (126,032) (79,720) 348,328 (76,154) 261,191 749,370 ---------- --------- -------- ---------- -------- -------- ----------- Total deductions and net transfers among funds and Plans................ 161,524 (127,703) (95,157) 346,910 (76,850) 244,127 640,756 ---------- --------- -------- ---------- -------- -------- ----------- Net increase (decrease).. 791,987 (24,726) 56,969 637,473 (45,964) 385,228 640,756 Net assets available for benefits Beginning of year........ 1,078,413 461,447 493,800 464,047 251,115 303,102 7,316,739 ---------- --------- -------- ---------- -------- -------- ----------- End of year.............. $1,870,400 $ 436,721 $550,769 $1,101,520 $205,151 $688,330 $ 7,957,495 ========== ========= ======== ========== ======== ======== =========== 12 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 of the Company. All costs of administering the Plan are borne by the Company. Participants should refer to the Summary Plan Description for a complete description of benefits provided. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). 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 6% of base pay per pay period, or contributions of a predetermined dollar amount negotiated with each bargaining group, whichever is less. Certain unions have negotiated to allow a percentage of Company matching contributions to follow the direction of the participants' contributions. INVESTMENT OPTIONS Participants direct the investment of their contributions into any investment option including the Merck Common Stock Fund (Participant directed). Participants should refer to each investment fund's prospectus for a more complete description of the risks and strategies associated with each fund. Participants may change their investment options daily. 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. T. Rowe Price Blue Chip Growth Fund The T. Rowe Price Blue Chip Growth Fund seeks to provide long-term growth of capital. The fund invests primarily (at least 65% of its assets) in common stocks of large and medium-sized blue chip companies that have the potential for above-average earnings growth and are well established in their respective industries. The fund may also invest in convertible stocks and bonds, preferred stocks, bonds and warrants. Up to 20% of assets (excluding reserves) may be invested in foreign securities, which may be subject to currency risks and political and sovereign risks of the home country. 11 13 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS 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. Vanguard U.S. Growth Portfolio The Vanguard U.S. Growth Portfolio seeks to provide long-term capital growth by investing in equity securities of large, established U.S. companies that have good growth records, strong market positions and have exhibited long-term financial strength to provide potential long-term growth. 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. T. Rowe Price New Income Fund The T. Rowe Price New Income Fund is a bond fund that seeks to provide the highest level of income consistent with preservation of capital by purchasing securities that have been rated as investment-grade by Standard & Poor's, Moody's or Fitch Investor Services. The fund invests at least 80% of its assets in income-producing investment-grade debt securities including U.S. government and agency securities, corporate bonds, bank obligations and utilities. The fund's dollar-weighted average maturity is generally expected to be between four and fifteen years. T. Rowe Price Mid-Cap Growth Fund The T. Rowe Price Mid-Cap Growth Fund seeks to provide long-term capital appreciation by investing primarily in the stock of medium-sized (mid-cap) growth companies that offer the potential for above-average earnings growth. The fund focuses on companies that are no longer considered new or emerging, but are well-established. It may also invest in convertible securities, warrants and foreign securities, which are subject to greater risks. EuroPacific Growth Fund This fund seeks long-term capital growth by investing primarily in securities of companies outside the United States. Normally, at least 65% of the fund's total assets will be invested in Europe or the Pacific Basin. The Pacific Basin is generally defined as those countries bordering the Pacific Ocean and includes, but is not limited to Australia, Canada, Japan, Malaysia and Singapore. The fund may also invest in convertible securities, debt and government securities and preferred stock. Foreign investment, especially in developing countries, involve greater risks and may offer greater potential. The George Putnam Fund of Boston A This fund seeks to provide a balanced investment comprised of a well-diversified portfolio of stocks and bonds that will produce both capital growth and current income. Normally, no more than 75% of the fund's assets will be invested in common stocks and convertible securities. 12 14 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS 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. Spartan U.S. Equity Index Fund This fund seeks to provide investment results that correspond to the total return performance of common stocks traded in the United States. Funds are primarily invested in securities of the companies which comprise the S&P 500 Index. Fidelity Low-Priced Stock Fund This fund seeks capital appreciation by investing mainly in low-priced domestic and foreign common stocks ($35 or less at time of purchase). Foreign securities may involve a higher degree of risk. This fund charges a redemption fee to discourage short-term buying and selling of fund shares. If fund shares are sold after being held for less than 90 days, the fund will deduct a redemption fee from participants' accounts equal to 1.5% of the value of the shares sold. Franklin Small Cap Growth Fund I This fund seeks long-term capital growth by investing primarily in stocks of companies with market capitalization of less than $1.5 billion at the time of the investment. The fund tries to invest at least one-third of its assets in stocks of companies with market capitalization of $550 million or less. Although the fund's assets are invested primarily in small companies, it may invest up to 35% of its total assets in larger capitalized companies with strong growth potential, in relatively well-known larger companies in mature industries with potential for capital appreciation and in corporate debt securities, including bonds, notes and debentures if deemed appropriate. The fund may also invest up to 25% of its total assets in foreign securities, which may involve greater risks. Effective January 1, 1999, the Franklin Small Cap Growth Fund I shares were changed to Class A. Putnam Voyager Fund A This fund seeks capital appreciation by investing primarily in common stocks of companies that have potential for capital appreciation which is significantly greater than that of the market averages. The fund may also invest in convertible bonds, convertible preferred stocks, warrants, preferred stocks, money market instruments and debt securities. The fund may invest up to 20% of its total assets in securities principally traded in foreign markets. Foreign securities are subject to currency, political, financial or sovereign risks of the issuer's home country. Templeton Developing Markets Trust I This fund seeks long-term capitalization by investing in equity securities of emerging market countries. The fund may invest up to 35% of its total assets in debt securities, including bonds, notes, debentures, commercial paper, certificates of deposit, time deposits and bankers' acceptances. Foreign investments may involve greater risks. Effective January 1, 1999, the Templeton Developing Markets Trust I shares were changed to Class A. 13 15 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN NOTES TO FINANCIAL STATEMENTS -- (CONTINUED) T. Rowe Price Dividend Growth Fund This fund seeks to provide increasing dividend income over time, long-term capital appreciation and reasonable current income through investments primarily in dividend-paying stocks. The fund may also invest in bonds and foreign securities. 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. PARTICIPANTS' LOAN ACCOUNT Participants may borrow from their account balances with interest charged at 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 balance. Activity related to these borrowings is reflected in the Participants' Loan Account column of the financial statements. BENEFITS PAID TO PARTICIPANTS In-service (which include hardship withdrawals) and termination distributions are made throughout the year in accordance with applicable Plan provisions. At December 31, 1998 and 1997, net assets available for benefits included distributions in process of payment of $835,834 and $698,384, 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 net appreciation (depreciation) 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. Actual results could differ from these estimates. 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 was most recently amended in July 1998. The Plan sponsor believes that the Plan is 14 16 MERCK & CO., INC. EMPLOYEE STOCK PURCHASE AND SAVINGS PLAN NOTES TO FINANCIAL STATEMENTS -- (CONTINUED) designed and currently operated in compliance with the IRC. Therefore, no provision for income taxes has been made. 4. OTHER MATTERS: Net reallocations in 1998 of ($1,272,189) 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. PARTY-IN-INTEREST: All party-in-interest transactions are set forth on the attached schedules. 6. PROHIBITED TRANSACTIONS: There were no prohibited transactions during 1998. 7. SUBSEQUENT EVENTS: Subsequent to year end, the Company match was increased from 50% of employee contributions up to 5% of base pay, subject to a $60 monthly cap, to 50% of employee contributions up to 6% of base pay and the monthly cap of $60 for certain unions was eliminated. The Company also amended the investment for Company matching contributions 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). 15 17 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, 1998 NUMBER OF UNITS/SHARES AT NAME OF ISSUER AND TITLE OF ISSUE CLOSE OF PERIOD COST CURRENT VALUE --------------------------------- --------------- ------------ ------------- Merck Common Stock Fund*.................................... 12,173,650 $ 98,151,603 $306,880,503 T. Rowe Price Blue Chip Growth Fund......................... 489,337 11,338,153 14,973,705 Fidelity Equity-Income Fund................................. 39,174 1,786,245 2,176,087 Vanguard U.S. Growth Portfolio.............................. 100,606 3,124,410 3,771,723 Fidelity Growth & Income Portfolio.......................... 117,067 3,906,124 5,366,261 T. Rowe Price New Income Fund............................... 165,838 1,486,350 1,461,033 T. Rowe Price Mid-Cap Growth Fund........................... 53,620 1,505,814 1,827,382 EuroPacific Growth Fund..................................... 66,549 1,876,722 1,889,995 The George Putnam Fund of Boston A.......................... 313,337 5,696,707 5,652,596 Fidelity Retirement Money Market............................ 9,991,208 9,991,208 10,010,154 Spartan U.S. Equity Index Fund.............................. 42,507 1,349,043 1,868,618 Fidelity Low-Priced Stock Fund.............................. 19,092 466,768 436,243 Franklin Small Cap Growth Fund I............................ 24,376 557,244 550,170 Putnam Voyager Fund A....................................... 50,205 1,006,299 1,100,487 Templeton Developing Markets Trust I........................ 19,893 275,123 204,899 T. Rowe Price Dividend Growth Fund.......................... 31,244 637,885 687,684 Participants' Loan Account (with interest rates ranging from 9.0% to 9.5%)................................ -- 7,948,137 7,948,137 ------------ ------------ Total Investments................................... $151,103,835 $366,805,677 ============ ============ - --------------- * Denotes a party-in-interest to the Plan. 16 18 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, 1998 CURRENT VALUE PURCHASE COST OF OF ASSETS ON IDENTITY OF PARTY INVOLVED AND DESCRIPTION OF ASSETS PRICE SELLING PRICE ASSET TRANSACTION DATE NET GAIN - ---------------------------------------------------- ---------- ------------- ----------- ---------------- ----------- Merck Common Stock Fund* 251 purchase transactions.................... $34,639,546 $ -- $34,639,546 $34,639,546 $ -- 249 sales transactions....................... -- 35,288,818 18,162,832 35,288,818 17,125,986 Fidelity Retirement Money Market 208 purchase transactions.................... 15,609,271 -- 15,609,271 15,609,271 -- 202 sales transactions....................... -- 14,916,715 14,916,715 14,916,715 -- - --------------- (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. * Denotes a party-in-interest to the Plan. 17 19 EXHIBIT 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference of our report dated May 7, 1999 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, 33-64665, 333-23293 and 333-23295), on Form S-4 (No. 33-50667) and on Form S-3 (Nos. 33-60322, 33-39349, 33-51785, 33-57421, 333-17045, 333-36383 and 333-77569). It should be noted that we have not audited any financial statements of the Plan subsequent to December 31, 1998 or performed any audit procedures subsequent to the date of our report. ARTHUR ANDERSEN LLP New York, New York June 10, 1999