-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, K61SQQy623S9+bcg7ddR2Risnmfkj4lollvTI0x79NpdGu0OIJ3OFKjzcgb5hQ43 e0Eed4U4PYTdi05wYEkxOw== 0000922423-01-000146.txt : 20010212 0000922423-01-000146.hdr.sgml : 20010212 ACCESSION NUMBER: 0000922423-01-000146 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20010209 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CABOT MICROELECTRONICS CORP CENTRAL INDEX KEY: 0001102934 STANDARD INDUSTRIAL CLASSIFICATION: ABRASIVE ASBESTOS & MISC NONMETALLIC MINERAL PRODUCTS [3290] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: SC 13G SEC ACT: SEC FILE NUMBER: 005-60411 FILM NUMBER: 1529762 BUSINESS ADDRESS: STREET 1: 870 NORTH COMMONS DRIVE CITY: AURORA STATE: IL ZIP: 60504 BUSINESS PHONE: 6303756631 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: GILDER GAGNON HOWE & CO LLC CENTRAL INDEX KEY: 0000902464 STANDARD INDUSTRIAL CLASSIFICATION: [] IRS NUMBER: 133174112 STATE OF INCORPORATION: NY FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 1775 BROADWAY STREET 2: 26TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10019 BUSINESS PHONE: 2127652500 MAIL ADDRESS: STREET 1: 1775 BROADWAY STREET 2: 26TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10019 FORMER COMPANY: FORMER CONFORMED NAME: GILDER GAGNON HOWE & CO DATE OF NAME CHANGE: 19930428 SC 13G 1 0001.txt SCHEDULE 13G SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ---------------------- Under the Securities Exchange Act of 1934 SCHEDULE 13G INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Cabot Microelectronics Corporation ---------------------------------- (Name of Issuer) Common Stock ------------ (Title of Class of Securities) 12709P103 --------- (CUSIP Number) January 31, 2001 --------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |X| Rule 13d-1(b) |_| Rule 13d-1(c) |_| Rule 13d-1(d) --------------- Page 1 of 6 Pages SCHEDULE 13G CUSIP No. 12709P103 Page 2 of 6 Pages - -------------------------------------------------------------------------------- 1) NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Gilder, Gagnon, Howe & Co. LLC 13-3174112 - -------------------------------------------------------------------------------- 2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |_| (b) |_| - -------------------------------------------------------------------------------- 3) SEC USE ONLY - -------------------------------------------------------------------------------- 4) CITIZENSHIP OR PLACE OF ORGANIZATION New York - -------------------------------------------------------------------------------- NUMBER 5) SOLE VOTING POWER OF 3,050 SHARES -------------------------------------------- BENEFICIALLY 6) SHARED VOTING POWER OWNED BY None EACH -------------------------------------------- REPORTING 7) SOLE DISPOSITIVE POWER PERSON None WITH -------------------------------------------- 8) SHARED DISPOSITIVE POWER 1,260,154 - -------------------------------------------------------------------------------- 9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,260,154 - -------------------------------------------------------------------------------- 10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |-| - -------------------------------------------------------------------------------- 11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.3% - -------------------------------------------------------------------------------- 12) TYPE OF REPORTING PERSON BD - -------------------------------------------------------------------------------- 2 Schedule 13G Item 1(a). Name of Issuer: Cabot Microelectronics Corporation Item 1(b). Address of Issuer's Principal Executive Offices: 870 North Common Drive Aurora, IL 60504 Item 2(a). Name of Person Filing: Gilder, Gagnon, Howe & Co. LLC Item 2(b). Address of Principal Business Office or, if None, Residence: 1775 Broadway, 26th Floor New York, NY 10019 Item 2(c). Citizenship: New York Item 2(d). Title of Class of Securities: Common Stock Item 2(e). CUSIP Number: 12709P103 Item 3. If this statement is filed pursuant to ss.ss. 240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a: (a) [x] Broker or Dealer Registered Under Section 15 of the Act (15 U.S.C. 78o) (b) |_| Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c) (c) |_| Insurance Company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c) (d) |_| Investment Company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8) (e) |_| Investment Adviser in accordance withss.240.13d-1(b)(1)(ii)(E) (f) |_| Employee benefit plan or endowment fund in accordance withss.240.13d-1(b)(1)(ii)(F) (g) |_| Parent Holding Company or control person in accordance withss.240.13d-1(b)(ii)(G) 3 (h) |_| Savings Association as defined inss.3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813) (i) |_| Church plan that is excluded from the definition of an investment company under ss.3(c)(15) of the Investment Company Act of 1940 (15 U.S.C. 80a-3) (j) |_| Group, in accordance withss.240.13d-1(b)(ii)(J) Item 4. Ownership. (a) Amount beneficially owned: 1,260,154 (b) Percent of class: 5.3% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 3,050 (ii) Shared power to vote or to direct the vote: None (iii) Sole power to dispose or to direct the disposition of: None (iv) Shared power to dispose or to direct the disposition of: 1,260,154 The shares reported include 1,240,957 shares held in customer accounts over which partners and/or employees of the Reporting Person have discretionary authority to dispose of or direct the disposition of the shares, 16,147 shares held in accounts owned by the Partners of the Reporting Person and their families, and 3,050 shares held in the account of the profit-sharing plan of the Reporting Person ("the Profit-Sharing Plan"). Item 5. Ownership of Five Percent or Less of a Class. Not applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person. The owners of the accounts (including the Profit-Sharing Plan) in which the shares reported on this Schedule are held have right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities. Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company. Not applicable 4 Item 8. Identification and Classification of Members of the Group. Not applicable Item 9. Notice of Dissolution of Group. Not applicable Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect. 5 SIGNATURE After reasonable inquiry and to the best knowledge and belief of the undersigned, the undersigned certifies that the information set forth in this Statement is true, complete and correct. February 9, 2001 -------------------------- Date /s/ Walter Weadock -------------------------- Signature Walter Weadock, Member Name/Title 6 -----END PRIVACY-ENHANCED MESSAGE-----