1. Name and Address of Reporting Person
Vagnini, Michael F.
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)
Corporate Controller
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 2023 D
Common Stock 2469.373 I ESOP TRUST
Common Stock 23.2245 I DRIP
Common Stock 34714 I LTIP 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 5690 01/21/2004 02/20/2013 Common 5690 $0.0000 5690 D
Option 003 Stock
(Right to
Buy)
NQ Stock $7.25 10/22/2012 Common 7132 D
Option Stock
(Right to
Buy)
NQ Stock $7.92 11/22/2011 Common 10000 D
Option Stock
(Right to
Buy)
NQ Stock $8.1562 11/30/2010 Common 20000 D
Option Stock
(Right to
Buy)
NQ Stock $8.343 11/19/2009 Common 40473 D
Option Stock
(Right to
Buy)
NQ Stock $14.3438 11/14/2008 Common 727 D
Option Stock
(Right to
Buy)
ISO Stock $6.38 01/21/2 A 24310 01/21/2004 01/21/2013 Common 24310 $0.0000 24310 D
Option 003 Stock
(Right to
Buy)
ISO Stock $7.25 10/22/2012 Common 12868 D
Option Stock
(Right to
Buy)
ISO Stock $7.92 10/23/2011 Common 10000 D
Option Stock
(Right to
Buy)
ISO Stock $8.343 10/19/2009 Common 9527 D
Option Stock
(Right to
Buy)
ISO Stock $14.3438 10/14/2008 Common 7273 D
Option Stock
(Right to
Buy)
ISO Stock $16.875 11/16/2006 Common 5000 D
Option Stock
(Right to
Buy)
ISO Stock $26.4063 11/07/2007 Common 5000 D
Option Stock
(Right to
Buy)
NQ Rights $11.7469 12/16/2003 Common 2874 D
Option Stock
Explanation of Responses:
Options will vest as follows: 5,690 on 1/21/2004.
Options will vest as follows: 4,310 on 1/21/2004, 10,000 on 1/21/2005 and
10,000 on 1/21/2006.
SIGNATURE OF REPORTING PERSON
/s/ Michael F. Vagnini
DATE
01/23/2003