1. Name and Address of Reporting Person
Barna, Peter
Crompton Corporation
199 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)
Senior V.P. and CFO
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 12611 D
Common Stock 26218.69 I LTIP TRUST
(1TA)
Common Stock 57909.8296 I ESOP TRUST
Common Stock 140520.47 I LTIP TRUST
1988
Common Stock 5132 I BEP Trust
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 58654 01/21/2004 02/20/2013 Common 58654 $0.0000 58654 D
Option 003 Stock
(Right to
Buy)
NQ Stock $7.25 11/21/2012 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 $8.3437 11/19/2009 Common 188015 D
Option Stock
(Right to
Buy)
NQ Stock $13 11/18/2005 Common 6558 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 72244 D
Option Stock
(Right to
Buy)
NQ Stock $14.625 11/19/2004 Common 5105 D
Option Stock
(Right to
Buy)
NQ Stock $19.3125 11/20/2003 Common 3048 D
Option Stock
(Right to
Buy)
NQ Stock $26.4063 11/07/2007 Common 20000 D
Option Stock
(Right to
Buy)
NQ Stock $16875 11/16/2006 Common 13927 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 $8.3437 10/19/2009 Common 11985 D
Option Stock
(Right to
Buy)
ISO Stock $13 10/18/2005 Common 8442 D
Option Stock
(Right to
Buy)
ISO Stock $14.5 08/21/2006 Common 27756 D
Option Stock
(Right to
Buy)
ISO Stock $16.875 10/16/2006 Common 6073 D
Option Stock
(Right to
Buy)
ISO Stock $19.3125 10/20/2003 Common 5952 D
Option Stock
(Right to
Buy)
Explanation of Responses:
Options will vest as follows: 30,000 on 1/21/2004, 14,327 on 1/21/2005 and
14,327 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/ Peter Barna
DATE
01/23/2003