1. Name and Address of Reporting Person
Neville, Matthew
c/o Cabot Microelectronics Corporation
870 Commons Drive
Aurora, IL 60504
USA
2. Issuer Name and Ticker or Trading Symbol
Cabot Microelectronics Corporation (CCMP)
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Day/Year
01/03/2003 R1
5. If Amendment, Date of Original (Month/Day/Year)
01/06/2003
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
(X) Director ( ) 10% Owner
(X) Officer (give title below) ( ) Other (specify below)
Chief Executive Offier
7. Individual or Joint/Group Filing (Check Applicable Line)
(X) Form filed by One Reporting Person
( ) Form filed by More than One Reporting Person
TABLE I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
+------------------------------+----------+----------+---------+--------------------------+--------------+-----------+------------+
|1. Title of Security |2. Trans- |2A.Execu- |3. Trans-|4. Securities Acquired (A)|5. Amount of |6. Owner- |7. Nature |
| | action | action | action| or Disposed of (D) |Securities | ship | of In- |
| | Date | Date | Code | |Beneficially | Form: | direct |
| | | | | |Owned | Direct | Bene- |
| | (Month/ | (Month/ | | |Following | (D) or | ficial |
| | Day/ | Day/ +-----+---+-----------+---+----------+Reported | Indirect| Owner- |
| | Year) | Year) |Code |V |Amount |A/D|Price |Transaction(s)| (I) | ship |
+------------------------------+----------+----------+-----+---+-----------+---+----------+--------------+-----------+------------+
Common Stock 12/31/2002 A 89 A $34.9900 26250 D
TABLE II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned
+----------+--------+-------+-------+---------+-----------+---------------------+----------------+----------+-------+-------+------+
|1. |2. |3. |3A. |4. |5. |6. |7. |8. |9. |10. |11. |
| | | | | | | | | |Number |Owner- | |
| | | | | | | | | |of |ship | |
| | | | | | | | | |Deriv- |Form of| |
| | | | | | | |Title and Amount| |ative |Deriv- | |
| | | | | | | |of Underlying | |Secur- |ative |Nature|
| |Conver- |Trans- |Execu- | |Number of | |Securities | |ities |Secur- |of |
| |sion or |action |tion | |Derivative |Date Exercisable +-------+--------+ |Benefi-|ity: |In- |
| |Exercise|Date |Date | |Securities |and Expiration Date | |Amount | |cially |Direct |direct|
| |Price of| | |Transac- |Acquired(A)|(Month/Day/Year) | |or | |Owned |(D) or |Bene- |
|Title of |Deriv- |(Month/|(Month/|tion Code|Disposed(D)+----------+----------+ |Number |Price of | |In- |ficial|
|Derivative|ative | Day/ | Day/ +------+--+-----+-----+Date Exer-|Expira- | |of |Derivative| |direct |Owner-|
|Security |Security|Year) |Year) |Code |V |(A) |(D) |cisable |tion Date |Title |Shares |Security | |(I) |ship |
+----------+--------+-------+-------+------+--+-----+-----+----------+----------+-------+--------+----------+-------+-------+------+
Stock $20 04/04/2005 Common 75000 D
Options Stock
(Right to
buy)
Stock $49.8 05/01/2012 Common 100000 D
Options Stock
(Right to
buy)
Stock $51.37 12/11/2012 Common 100000 D
Options Stock
(Right to
buy)
Stock $67.07 05/01/2008 Common 100000 D
Options Stock
(Right to
buy)
Explanation of Responses:
SIGNATURE OF REPORTING PERSON
/s/ Matthew Neville
DATE
01/09/2003