1. Name and Address of Reporting Person
Jepsen, John R.
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)
Vice President & Treasurer
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 8353 D
Common Stock 1296.587 I ESOP 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 8 01/21/2004 02/20/2013 Common 8 $0.0000 8 D
Option 003 Stock
(Right to
Buy)
NQ Stock $7.25 11/21/2012 Common 2132 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 22642 D
Option Stock
(Right to
Buy)
ISO Stock $6.38 01/21/2 A 29992 01/21/2004 01/21/2013 Common 29992 $0.0000 29992 D
Option 003 Stock
(Right to
Buy)
ISO Stock $7.25 10/22/2012 Common 7868 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 27358 D
Option Stock
(Right to
Buy)
ISO Stock $14.3438 10/14/2008 Common 5000 D
Option Stock
(Right to
Buy)
Explanation of Responses:
Options will vest as follows: 8 on 1/21/2004.
Options will vest as follows: 9,992 on 1/21/2004, 10,000 on 1/21/2005 and
10,000 on 1/21/2006.
SIGNATURE OF REPORTING PERSON
/s/ John R. Jepsen
DATE
01/23/2003