UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ---------- SCHEDULE 13D Under the Securities Exchange Act of 1934 MARKETWATCH.COM, INC. (Name of Issuer) Class A Common Stock, Par Value $.01 per share (Title of Class of Securities) 57619106 (CUSIP Number) Sumner M. Redstone National Amusements, Inc. 200 Elm Street Dedham, Massachusetts 02026 Telephone: (781) 461-1600 with a copy to: Michael D. Fricklas, Esq. Viacom Inc. 1515 Broadway New York, New York 10036 Telephone: (212) 258-6000 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) May 4, 2000 (Date of Event which Requires Filing of this Statement) --------------------------------------------------------- If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(b)(3) or (4), check the following box / /. Check the following box if a fee is being paid with this statement / /. CUSIP No. 57619106 (1) Name of Reporting Person S.S. or I.R.S. Identification No. of Above Person SUMNER M. REDSTONE -------------------------------------------------------------------------------- S.S. No. -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of Group (See Instructions) / / (a)____________________________________________________________________ / / (b)____________________________________________________________________ (3) SEC Use Only___________________________________________________________ (4) Sources of Funds (See Instructions) N/A ------------------------------------ (5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e).__________________________________________________________ (6) Citizenship or Place of Organization United States --------------------------------- ______________ Number of (7) Sole Voting Power __________________________ Shares Beneficially (8) Shared Voting Power 5,636,814 Owned by ------------------------ Each Reporting (9) Sole Dispositive Power _____________________ Person With (10) Shared Dispositive Power 5,636,814 ______________ ------------------ (11) Aggregate Amount Beneficially Owned by Each Reporting 5,636,814 ---------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)_____________________________________________________ (13) Percent of Class Represented by Amount in Row (11) 34.4% --------------------- (14) Type of Reporting Person (See Instructions) IN ---------------------------- CUSIP No. 57619106 (1) Name of Reporting Person S.S. or I.R.S. Identification No. of Above Person CBS BROADCASTING INC. -------------------------------------------------------------------------------- I.R.S No. 13-0590730 -------------------------------------------------------------------------------- (2) Check the Appropriate Box if a Member of Group (See Instructions) / / (a)____________________________________________________________________ / / (b)____________________________________________________________________ (3) SEC Use Only___________________________________________________________ (4) Sources of Funds (See Instructions) N/A ----------------------------------- (5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e). _________________________________________________________ (6) Citizenship or Place of Organization New York ----------------------------------- _______________ Number of (7) Sole Voting Power __________________________ Shares Beneficially (8) Shared Voting Power 5,636,814 Owned by ------------------------ Each Reporting (9) Sole Dispositive Power _____________________ Person With (10) Shared Dispositive Power 5,636,814 ______________ ------------------ (11) Aggregate Amount Beneficially Owned by Each Reporting 5,636,814 ----------------------------------------------------------------------- (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)_____________________________________________________ (13) Percent of Class Represented by Amount in Row (11) 34.4% --------------------- (14) Type of Reporting Person (See Instructions) CO ---------------------------- Item 1. Security and Issuer. The class of equity securities to which this Statement on Schedule 13D relates is the Common Stock, $.01 par value per share (the "Common Shares"), of MarketWatch.com, Inc., a Delaware corporation, with its principal executive office located at 825 Battery Street, San Francisco, California 94111 (the "Issuer"). Item 2. Identity and Background. This Statement is filed by Mr. Sumner M. Redstone, National Amusements, Inc. ("NAI"), NAIRI, Inc. ("NAIRI"), Viacom Inc. ("Viacom"), Westinghouse CBS Holding Company, Inc. ("W/CBS HCI") and CBS Broadcasting Inc. ("CBSBI") (collectively, the "Reporting Persons"). CBSBI, a New York corporation, has its principal executive offices at 51 West 52nd Street, New York, New York 10019. CBSBI's principal businesses, the CBS television network, radio and television broadcasting, and outdoor advertising. 100% of the issued and outstanding stock of CBSBI is owned by W/CBS HCI. W/CBS HCI, a Delaware corporation, has its principal office at 51 West 52nd Street, New York, New York 10019. W/CBS HCI's principal business is cable television transmission and production services. 100% of the issued and outstanding stock of W/CBS HCI is owned by Viacom. Viacom, a Delaware corporation, has its principal executive offices at 1515 Broadway, New York, New York 10036 and is a diversified entertainment and communications company. At May 12, 2000, approximately 68% of Viacom's voting Class A Common Stock, par value $.01 per share, and approximately 13% (on a combined basis) of Viacom's Class A Common Stock and non-voting Class B Common Stock, par value $.01 per share, was owned by NAIRI. NAIRI, a Rhode Island corporation, has its principal office at 200 Elm Street, Dedham, Massachusetts 02026 and is a company owning and operating movie theaters in the United States whose main asset is its shares of Viacom Class A Common Stock and Class B Common Stock. NAI, a Maryland corporation, has its principal office at 200 Elm Street, Dedham, Massachusetts 02026. NAI's principal businesses are owning and operating movie theaters in the United States, United Kingdom and South America and holding the common stock of NAIRI. 66-2/3% of the issued and outstanding shares of capital stock of NAI are beneficially owned by Mr. Sumner M. Redstone, as trustee of a trust owning such shares. Sumner M. Redstone is an individual whose business address is c/o National Amusements, Inc., 200 Elm Street, Dedham, Massachusetts 02026. Mr. Redstone's principal occupation is Chairman of the Board and Chief Executive Officer of NAI, Chairman and President of NAIRI, and Chairman of the Board and Chief Executive Officer of Viacom Inc. The executive officers and directors of CBSBI, Viacom, NAIRI and NAI are set forth on Schedules I through V attached hereto, containing the following information with respect to each such person: (a) Name; (b) Residence or business address; and (c) Present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted. During the last five years, neither of the Reporting Persons nor any person named in any of Schedules I through V attached hereto has been (a) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (b) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Except for Jan Leschly, who is a Danish citizen, all of the directors of CBSBI, W/CBS HCI, Viacom, NAIRI and NAI, including Mr. Sumner M. Redstone, are citizens of the United States. Item 3. Source and Amount of Funds or Other Consideration. The Issuer's Common Shares were acquired by the Reporting Persons, other than CBSBI and W/CBS HCI which previously owned the subject shares, pursuant to the merger of CBS Corporation ("CBS"), of which CBSBI and W/CBS HCI were, respectively, indirect and direct wholly owned subsidiaries, with and into Viacom on May 4, 2000. Item 4. Purpose of Transaction. The Issuer's Common Shares were acquired by the Reporting Persons, other than CBSBI and W/CBS HCI which previously owned the subject shares, pursuant to the merger of CBS, of which CBSBI and W/CBS HCI were, respectively, indirect and direct wholly owned subsidiaries, with and into Viacom on May 4, 2000. The Reporting Persons may, at any time and from time to time, purchase additional Common Shares of the Issuer and may dispose of any and all Common Shares of the Issuer held by them. Notwithstanding the foregoing, the Reporting Persons have no current plan or proposal which relates to, or would result in, any of the actions enumerated in subparagraphs (a) through (j) of Item 4 of Schedule 13D. Item 5. Interest in Securities of the Issuer. (a) and (b) CBSBI is the owner, with shared dispositive and voting power, of 5,636,814 Common Shares, or approximately 34.4%, of the Issuer's issued and outstanding Common Shares and 90% of the voting power (based on the number of Common Shares that were reported by the Issuer to be issued and outstanding as of April 10, 2000). W/CBS HCI is currently the beneficial owner, with shared dispositive and voting power of 5,636,814 Common Shares, or approximately 34.4%, of the Issuer's issued and outstanding Common Shares (based on the number of Common Shares that were reported by the Issuer to be issued and outstanding as of April 10, 2000). Viacom is currently the beneficial owner, with shared dispositive and voting power, of 5,636,814 Common Shares, or approximately 34.4%, of the Issuer's issued and outstanding Common Shares (based on the number of Common Shares that were reported by the Issuer to be issued and outstanding as of April 10, 2000). NAIRI is currently the beneficial owner, with shared dispositive and voting power, of 5,636,814 Common Shares, or approximately 34.4%, of the Issuer's issued and outstanding Common Shares (based on the number of Common Shares that were reported by the Issuer to be issued and outstanding as of April 10, 2000). NAI is currently the beneficial owner, with shared dispositive and voting power, of 5,636,814 Common Shares, or approximately 34.4%, of the Issuer's issued and outstanding Common Shares (based on the number of Common Shares that were reported by the Issuer to be issued and outstanding as of April 10, 2000). As a result of his stock ownership in NAI, Mr. Sumner M. Redstone is deemed the beneficial owner of 5,636,814 Common Shares of the Issuer or approximately 34.4% of the Issuer's issued and outstanding Common Shares (based on the number of Common Shares that were reported by the Issuer to be issued and outstanding as of April 10, 2000). (c) The Issuer's Common Shares were acquired by the Reporting Persons, other than CBSBI and W/CBS HCI which previously owned the subject shares, pursuant to the merger of CBS Corporation, of which CBSBI and W/CBS HCI were, respectively, indirect and direct wholly owned subsidiaries, with and into Viacom on May 4, 2000. (d) None. (e) N/A Transactions Effected in the Past 60 Days CBS Broadcasting Inc. Date Shares Price Where and How Executed ---- ------ ----- ---------------------- 5/4/00 1,136,814 Approximately $43 million ($13 Private Transaction with million in cash and $30 million in Issuer, San Francisco, CA advertis-ing and promotion) Signatures ---------- After reasonable inquiry and to the best of our knowledge and belief, we certify that the information set forth in this statement is true, complete and correct. Pursuant to Rule 13d-1(f)(1), each of the undersigned agrees that this statement is filed on behalf of each of us. May 15, 2000 /s/ Sumner M. Redstone -------------------------------- Sumner M. Redstone, Individually National Amusements, Inc. By: /s/ Sumner M. Redstone -------------------------------- Sumner M. Redstone, Chairman and Chief Executive Officer NAIRI, Inc. By: /s/ Sumner M. Redstone -------------------------------- Sumner M. Redstone, Chairman and President Viacom Inc. By: /s/Michael D. Fricklas -------------------------------- Michael D. Fricklas Senior Vice President, General Counsel and Secretary Westinghouse/CBS Holding Company, Inc. By: /s/ Angeline C. Straka -------------------------------- Angeline C. Straka, Vice President and Secretary CBS Broadcasting Inc. By: /s/ Angeline C. Straka -------------------------------- Angeline C. Straka, Vice President and Secretary SCHEDULE I CBS BROADCASTING INC. -------------------------------------------------------------------------------------------------------------------------------- EXECUTIVE OFFICERS -------------------------------------------------------------------------------------------------------------------------------- Name and Address of Corporation or Business or Principal Occupation Other Organization Name Residence Address or Employment in which Employed -------------------------------------------------------------------------------------------------------------------------------- Mel Karmazin* Viacom Inc. President and Chief Operating Infinity Broadcasting Corporation 1515 Broadway Officer of Viacom Inc.; 40 West 57th Street New York, NY 10036 Chairman, President and Chief New York, NY 10019 Executive Officer of Infinity Broadcasting Corporation -------------------------------------------------------------------------------------------------------------------------------- Louis J. Briskman* CBS Broadcasting Inc. Executive Vice President and 51 W. 52nd Street General Counsel of CBS Television New York, NY 10019 -------------------------------------------------------------------------------------------------------------------------------- Leslie Moonves Viacom Inc. [Executive Vice President] of CBS Television 7800 Beverly Blvd. Viacom Inc.; President and Chief 7800 Beverly Blvd. Los Angeles, CA 90036 Executive Officer of CBS Los Angeles, CA 90036 Television -------------------------------------------------------------------------------------------------------------------------------- Fredric G. Reynolds* Viacom Inc. Executive Vice President and 1515 Broadway Chief Financial Officer of New York, NY 10036 Viacom Inc. -------------------------------------------------------------------------------------------------------------------------------- *Also a director SCHEDULE II WESTINGHOUSE CBS HOLDING COMPANY, INC. -------------------------------------------------------------------------------------------------------------------------------- EXECUTIVE OFFICERS -------------------------------------------------------------------------------------------------------------------------------- Name and Address of Corporation or Business or Principal Occupation Other Organization Name Residence Address or Employment in which Employed -------------------------------------------------------------------------------------------------------------------------------- Mel Karmazin* Viacom Inc. President and Chief Operating Infinity Broadcasting Corporation 1515 Broadway Officer of Viacom Inc.; 40 West 57th Street New York, NY 10036 Chairman, President and Chief New York, NY 10019 Executive Officer of Infinity Broadcasting Corporation -------------------------------------------------------------------------------------------------------------------------------- Louis J. Briskman* CBS Broadcasting Inc. Executive Vice President and 51 W. 52nd Street General Counsel of CBS Television New York, NY 10019 -------------------------------------------------------------------------------------------------------------------------------- Leslie Moonves Viacom Inc. [Executive Vice President] of CBS Television 7800 Beverly Blvd. Viacom Inc.; President and Chief 7800 Beverly Blvd. Los Angeles, CA 90036 Executive Officer of CBS Los Angeles, CA 90036 Television -------------------------------------------------------------------------------------------------------------------------------- Fredric G. Reynolds* Viacom Inc. Executive Vice President and 1515 Broadway Chief Financial Officer of New York, NY 10036 Viacom Inc. -------------------------------------------------------------------------------------------------------------------------------- *Also a director SCHEDULE III VIACOM INC. -------------------------------------------------------------------------------------------------------------------------------- EXECUTIVE OFFICERS -------------------------------------------------------------------------------------------------------------------------------- Name and Address of Corporation or Other Business or Principal Occupation or Organization in Which Employed Name Residence Address Employment -------------------------------------------------------------------------------------------------------------------------------- Sumner M. Redstone* Viacom Inc. Chairman of the Board and Chief National Amusements, Inc. 1515 Broadway Executive Officer of Viacom 200 Elm Street New York, NY 10036 Inc.; Chairman of the Board and Dedham, MA 02026 Chief Executive Officer of National Amusements, Inc.; President and Chief Executive Officer of Viacom International Inc. -------------------------------------------------------------------------------------------------------------------------------- Mel Karmazin* Viacom Inc. President and Chief Operating Chairman, President and Chief 1515 Broadway Officer Viacom Inc. and Viacom Executive Officer of Infinity New York, NY 10036 International Inc. Broadcasting Corporation -------------------------------------------------------------------------------------------------------------------------------- Michael D. Fricklas Viacom Inc. Sr. VP, General Counsel and Viacom International Inc. 1515 Broadway Secretary of Viacom Inc. and of 1515 Broadway New York, NY 10036 Viacom International Inc. New York, NY 10036 -------------------------------------------------------------------------------------------------------------------------------- Susan C. Viacom Inc. Vice President, Controller, Viacom Gordon 1515 Broadway Chief Accounting Officer of International New York, NY 10036 Viacom Inc. and Viacom Inc. International Inc. 1515 Broadway New York, NY 10036 -------------------------------------------------------------------------------------------------------------------------------- William A. Roskin Viacom Inc. Sr. VP, Human Resources and Viacom International Inc. 1515 Broadway Administration of Viacom Inc. 1515 Broadway New York, NY 10036 and Viacom International Inc. New York, NY 10036 -------------------------------------------------------------------------------------------------------------------------------- Fredric Reynolds Viacom Inc. Sr. VP, Chief Financial Officer Viacom International Inc. 1515 Broadway of Viacom Inc. and Viacom 1515 Broadway New York, NY 10 International Inc. New York, NY 10036 -------------------------------------------------------------------------------------------------------------------------------- *Also a Director SCHEDULE III (continued) -------------------------------------------------------------------------------------------------------------------------------- DIRECTORS -------------------------------------------------------------------------------------------------------------------------------- George S. Abrams Winer & Abrams Attorney Winer & Abrams 60 State Street 60 State Street Boston, MA 02109 Boston, MA 02109 -------------------------------------------------------------------------------------------------------------------------------- George H. Conrades AKAMI Technologies Chairman and Chief Executive 201 Broadway Officer of Cambridge, MA 02139 AKAMI Technologies -------------------------------------------------------------------------------------------------------------------------------- Philippe P. Dauman 121 East 65th Street Director of Viacom Inc. New York, NY 10021 and National Amusements, Inc. -------------------------------------------------------------------------------------------------------------------------------- Thomas E. Dooley 243 Cleft Road Director of Viacom Inc. Mill Neck, NY 11937 -------------------------------------------------------------------------------------------------------------------------------- William H. Gray III UNCF President and Chief Executive 8260 Willow Oaks Corporate Officer of The Drive College Fund/UNCF Fairfax, VA 22031 -------------------------------------------------------------------------------------------------------------------------------- Jan Leschly SmithKline Beecham Chief Executive (Retired) of P.O. Box 7929 SmithKline Beecham Philadelphia, PA 19101 -------------------------------------------------------------------------------------------------------------------------------- David T. McLaughlin Orion Safety Products Chairman and Chief Executive P.O. Box 2047 Officer of Easton, MD 21601 Orion Safety Products -------------------------------------------------------------------------------------------------------------------------------- Ken Miller Credit Suisse First Boston Vice Chairman of C.S. First Boston Credit Suisse First Boston Corporation Corporation 11 Madison Avenue - 22nd Floor 11 Madison Avenue 22nd Floor New York, NY 10010 New York, NY 10010 -------------------------------------------------------------------------------------------------------------------------------- Leslie Moonves Viacom Inc. President and Chief Executive CBS Television 1515 Broadway Officer of CBS Television 7800 Beverly Blvd. New York, NY 10036 Los Angeles, CA 90036 -------------------------------------------------------------------------------------------------------------------------------- Brent D. Redstone c/o Showtime Networks Inc. Director of National Amusements, National Amusements, Inc. 1633 Broadway Inc. 200 Elm Street New York, NY 10019 Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- Shari Redstone National Amusements, Inc. President of National Amusements, National Amusements, Inc. 200 Elm Street Inc. 200 Elm Street Dedham, MA 02026 Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- Fredric V. Salerno Bell Atlantic Corporation Vice Chairman--Finance and Bell Atlantic Corporation 1095 Avenue of the Americas Business Development of Bell 1095 Avenue of the Americas New York, NY 10036 Atlantic New York, NY 10036 -------------------------------------------------------------------------------------------------------------------------------- William Schwartz Yeshiva University VP for Academic Affairs (chief Yeshiva University 2495 Amsterdam Avenue academic officer) of Yeshiva 2495 Amsterdam Avenue New York, NY 10033 University New York, NY 10033 -------------------------------------------------------------------------------------------------------------------------------- Ivan Seidenberg Bell Atlantic Corporation Chairman of the Board and Chief Bell Atlantic Corporation 1095 Avenue of the Americas Executive Officer of Bell Atlantic 1095 Avenue of the Americas New York, NY 10036 New York, NY 10036 -------------------------------------------------------------------------------------------------------------------------------- Patty Stonesifer Bill and Melinda Gates Co-Chair and President of Foundation Bill and Melinda Gates Foundation 1551 Eastlake Ave. East Seattle, WA 98102 -------------------------------------------------------------------------------------------------------------------------------- Robert D. Walter Cardinal Health, Inc. Chairman and Chief Executive 7000 Cardinal Place Officer of Cardinal Health, Inc. Dublin, OH 43017 -------------------------------------------------------------------------------------------------------------------------------- SCHEDULE IV NAIRI, INC. -------------------------------------------------------------------------------------------------------------------------------- EXECUTIVE OFFICERS -------------------------------------------------------------------------------------------------------------------------------- Name and Address of Corporation or Business or Principal Occupation Other Organization Name Residence Address or Employment in which Employed -------------------------------------------------------------------------------------------------------------------------------- Sumner M. Redstone* Viacom Inc. Chairman of the Board of Viacom National Amusements, Inc. 1515 Broadway Inc.; Chairman of the Board and 200 Elm Street New York, NY 10036 Chief Executive Officer of Dedham, MA 02026 National Amusements, Inc.; Chairman and President of NAIRI, Inc. -------------------------------------------------------------------------------------------------------------------------------- Shari Redstone* National Amusements, Inc. President of National Amusements, National Amusements, Inc. 200 Elm Street Inc. and Executive Vice President 200 Elm Street Dedham, MA 02026 of NAIRI, Inc. Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- Jerome Magner National Amusements, Inc. Vice President and Treasurer of National Amusements, Inc. 200 Elm Street National Amusements, Inc. and 200 Elm Street Dedham, MA 02026 NAIRI, Inc. Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- Richard Sherman National Amusements, Inc. Vice President of National National Amusements, Inc. 200 Elm Street Amusements, Inc. and NAIRI, Inc. 200 Elm Street Dedham, MA 02026 Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- *Also a Director SCHEDULE V NATIONAL AMUSEMENTS, INC. -------------------------------------------------------------------------------------------------------------------------------- EXECUTIVE OFFICERS -------------------------------------------------------------------------------------------------------------------------------- Name and Address of Corporation or Business or Principal Occupation Other Organization Name Residence Address or Employment in which Employed -------------------------------------------------------------------------------------------------------------------------------- Sumner M. Redstone* Viacom Inc. Chairman of the Board of Viacom National Amusements, Inc. 1515 Broadway Inc.; Chairman of the Board and 200 Elm Street New York, NY l0036 Chief Executive Officer of Dedham, MA 02026 National Amusements, Inc.; Chairman and President of NAIRI, Inc. -------------------------------------------------------------------------------------------------------------------------------- Shari Redstone* National Amusements, Inc. President of National Amusements, National Amusements, Inc. 200 Elm Street Inc. and Executive Vice President 200 Elm Street Dedham, MA 02026 of NAIRI, Inc. Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- Jerome Magner National Amusements, Inc. VP and Treasurer of National National Amusements, Inc. 200 Elm Street Amusements, Inc., and NAIRI, Inc. 200 Elm Street Dedham, MA 02026 Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- Richard Sherman National Amusements, Inc. Vice President of National National Amusements, Inc. 200 Elm Street Amusements, Inc. and NAIRI, Inc. 200 Elm Street Dedham, MA 02026 Dedham, MA 02026 -------------------------------------------------------------------------------------------------------------------------------- *Also a Director -------------------------------------------------------------------------------------------------------------------------------- DIRECTORS -------------------------------------------------------------------------------------------------------------------------------- George S. Abrams Winer & Abrams Attorney Winer & Abrams 60 State Street 60 State Street Boston, MA 02109 Boston, MA 02109 -------------------------------------------------------------------------------------------------------------------------------- David Andelman Lourie and Cutler Attorney Lourie and Cutler 60 State Street 60 State Street Boston, MA 02109 Boston, MA 02109 -------------------------------------------------------------------------------------------------------------------------------- Philippe P. Dauman Residence: Director of National Amusements, 121 East 65th Street Inc. and Viacom Inc. New York, NY 10021 -------------------------------------------------------------------------------------------------------------------------------- Brent D. Redstone c/o Showtime Networks Inc. Director of National Amusements, National Amusements, Inc. 1633 Broadway Inc. 200 Elm Street New York, NY 10019 Dedham, MA 02026 --------------------------------------------------------------------------------------------------------------------------------