1. Name and Address of Reporting Person
Calarco, Vincent A.
One American Lane
Greenwich, CT 06831
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)
(X) Director ( ) 10% Owner
(X) Officer (give title below) ( ) Other (specify below)
President and CEO
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 503624 D
Common Stock 12318 I BEP Trust
Common Stock 33833 I By Trusts for
Sons
Common Stock 58872 I By Wife
Common Stock 41931.3332 I DRIP
Common Stock 50203.4924 I ESOP TRUST
Common Stock 457222.1 I LTIP TRUST
(1988)
Common Stock 179793.41 I LITP TRUST
(1TA)
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 35865 01/21/2004 02/20/2013 Common 358654 $0.0000 358654 D
Option 003 4 Stock
(Right to
Buy)
NQ Stock $7.25 11/21/2012 Common 211207 D
Option Stock
(Right to
Buy)
NQ Stock $7.92 11/22/2011 Common 337374 D
Option Stock
(Right to
Buy)
NQ Stock $8.1562 11/30/2010 Common 375000 D
Option Stock
(Right to
Buy)
NQ Stock $8.3437 11/19/2009 Common 788015 D
Option Stock
(Right to
Buy)
NQ Stock $13 11/18/2005 Common 102308 D
Option Stock
(Right to
Buy)
NQ Stock $14.3437 11/14/2008 Common 250000 D
Option Stock
(Right to
Buy)
NQ Stock $14.5 09/21/2006 Common 472416 D
Option Stock
(Right to
Buy)
NQ Stock $14.625 11/19/2004 Common 71163 D
Option Stock
(Right to
Buy)
NQ Stock $16.875 11/16/2006 Common 120000 D
Option Stock
(Right to
Buy)
NQ Stock $19.3125 11/20/2003 Common 54823 D
Option Stock
(Right to
Buy)
NQ Stock $26.4063 11/07/2007 Common 120000 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 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 $19.3125 10/20/2003 Common 5177 D
Option Stock
(Right to
Buy)
Explanation of Responses:
Options will vest as follows: 130,000 on 1/21/2004, 114,327 on 1/21/2005 and
114,327 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/ Vincent A. Calarco
DATE
01/23/2003