1. Name and Address of Reporting Person
Ackley, Robert W.
Crompton Corporation
1 Extrusion Drive
Pawcatuck, CT 06379
USA
2. Issuer Name and Ticker or Trading Symbol
Crompton Corporation
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Year
12/2002
5. If Amendment, Date of Original (Month/Year)
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
( ) Director ( ) 10% Owner
(X) Officer (give title below) ( ) Other (specify below)
Executive V.P. - Polymer Proc.
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/ | +-----------+---+----------+ Year | Indirect| Owner- |
| | Year) | Year) | |Amount |A/D|Price | | (I) | ship |
+------------------------------+----------+----------+---------+-----------+---+----------+--------------+-----------+------------+
Common Stock 157310 D
Common Stock 2601.4596 I By Wife
Common Stock 03/13/2002 J -38321.419 D $0.0000 I ESOP Trust
Common Stock 12/31/2002 J 792.524 A $0.0000 516.3034 I ESOP Trust
Common Stock 12/31/2002 J 711 A $0.0000 33708.77 I LTIP Trust
(1TA)
Common Stock 12/31/2002 J 291 A $0.0000 13411.14 I LTIP Trust
1988
Common Stock 12/31/2002 J 5106.5219 A $0.0000 5106.5219 I ESPP
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|at End |direct |Owner-|
|Security |Security|Year) |Year) | |(A) |(D) |cisable |tion Date |Title |Shares |Security |of Year|(I) |ship |
+----------+--------+-------+-------+---------+-----+-----+----------+----------+-------+--------+----------+-------+-------+------+
NQ Stock $7.25 11/21/2012 Common 26207 D
Option Stock
(Right to
Buy)
NQ Stock $7.92 11/22/2011 Common 47374 D
Option Stock
(Right to
Buy)
NQ Stock $8.1562 11/30/2010 Common 75000 D
Option Stock
(Right to
Buy)
NQ Stock $8.3437 11/19/2009 Common 88015 D
Option Stock
(Right to
Buy)
NQ Stock $13 12/18/2005 Common 18808 D
Option Stock
(Right to
Buy)
NQ Stock $14.3438 11/14/2008 Common 50000 D
Option Stock
(Right to
Buy)
NQ Stock $14.5 09/21/2006 Common 72416 D
Option Stock
(Right to
Buy)
NQ Stock $14.625 11/19/2004 Common 13163 D
Option Stock
(Right to
Buy)
NQ Stock $16.875 11/16/2006 Common 20000 D
Option Stock
(Right to
Buy)
NQ Stock $18.3125 12/31/2 J 17540 08/04/1999 11/16/2001 Common 17540 $0.0000 0 D
Option 002 Stock
(Right to
Buy)
NQ Stock $19.1875 12/31/2 J 7789 08/04/1999 11/21/2002 Common 7789 $0.0000 0 D
Option 002 Stock
(Right to
Buy)
NQ Stock $19.3125 11/20/2003 Common 10823 D
Option Stock
(Right to
Buy)
NQ Stock $26.4063 11/07/2007 Common 20000 D
Option Stock
(Right to
Buy)
ISO Stock $7.25 10/22/2012 Common 13793 D
Option Stock
(Right to
Buy)
ISO Stock $7.92 10/23/2011 Common 12626 D
Option Stock
(Right to
Buy)
ISO Stock $8.3437 10/19/2009 Common 11985 D
Option Stock
(Right to
Buy)
ISO Stock $13 10/18/2005 Common 7692 D
Option Stock
(Right to
Buy)
ISO Stock $14.5 08/21/2006 Common 27584 D
Option Stock
(Right to
Buy)
ISO Stock $14.625 10/19/2004 Common 6837 D
Option Stock
(Right to
Buy)
ISO Stock $18.3125 12/31/2 J 5460 08/04/1999 10/16/2001 Common 5460 $0.0000 0 D
Option 002 Stock
(Right to
Buy)
ISO Stock $19.1875 12/31/2 J 5211 08/04/1999 10/21/2002 Common 5211 $0.0000 0 D
Option 002 Stock
(Right to
Buy)
ISO Stock $19.3125 10/20/2003 Common 5177 D
Option Stock
(Right to
Buy)
Explanation of Responses:
These shares were sold pursuant to Rule 16b-3f.
These shares were acquired during the fiscal year pursuant to the Registrant's
ESOP Plan and through reinvestment of dividends paid on the shares in this fund.
These shares were acquired during the fiscal year pursuant to the 1988 Long Term
Incentive Plan and through reinvestment of dividends paid on the shares in this
fund.
These shares were acquired during the fiscal year pursuant to the 1988 Long Term
Incentive Plan and through reinvestment of dividends paid on the shares in this
fund.
These shares represent the 12/31/02 balance in the individual's Crompton
Corporation 2001 Employee Stock Purchase Plan (ESPP).
Expired by its term without exercise or payment.
SIGNATURE OF REPORTING PERSON
/s/ Robert W. Ackley
DATE
01/22/2003