1. Name and Address of Reporting Person
Stephenson, William A.
Benson Road
Middlebury, CT 06749
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/Day/Year
01/21/2003
5. If Amendment, Date of Original (Month/Day/Year)
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
( ) Director ( ) 10% Owner
(X) Officer (give title below) ( ) Other (specify below)
Exec. V.P. - UCCI (sub of CK)
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 47518 D
Common Stock 22556 I LTIP TRUST
(1988)
Common Stock 2381.758 I ESOP
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 |
+----------+--------+-------+-------+------+--+-----+-----+----------+----------+-------+--------+----------+-------+-------+------+
NQ Stock $6.38 01/21/2 A 43654 01/21/2004 02/20/2013 Common 43654 $0.0000 43654 D
Option 003 Stock
(Right to
Buy)
NQ Stock $7.25 10/22/2012 Common 36207 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 $8.343 11/19/2009 Common 88015 D
Option Stock
(Right to
Buy)
NQ Stock $14.3438 11/14/2008 Common 40000 D
Option Stock
(Right to
Buy)
NQ Stock $14.5 09/21/2006 Common 65520 D
Option Stock
(Right to
Buy)
NQ Stock $16.875 11/16/2006 Common 20000 D
Option Stock
(Right to
Buy)
NQ Stock $26.4063 11/07/2007 Common 20000 D
Option Stock
(Right to
Buy)
ISO Stock $6.38 01/21/2 A 31346 01/21/2005 01/21/2013 Common 31346 $0.0000 31346 D
Option 003 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 $8.343 10/19/2009 Common 11985 D
Option Stock
(Right to
Buy)
ISO Stock $14.5 08/21/2006 Common 34480 D
Option Stock
(Right to
Buy)
NQ Rights $11.7469 11/16/2003 Common 54724 D
Option Stock
NQ Rights $13.5742 09/30/2004 Common 9894 D
Option Stock
Explanation of Responses:
Options will vest as follows: 25,000 on 1/21/2004, 9,327 on 1/21/2005 and 9,327
on 1/21/2006.
Options will vest as follows: 15,673 on 1/21/2005 and 15,673 on 1/21/2006.
SIGNATURE OF REPORTING PERSON
/s/ William A. Stephenson
DATE
01/23/2003