1. Name and Address of Reporting Person
PALM, JULIA D.
251 Ballardvale Street
Wilmington, MA 01887
USA
2. Issuer Name and Ticker or Trading Symbol
Charles River Laboratories Int'l., Inc (CRL)
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Year
5/2002
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)
Sr. Vice President
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- |3. Trans- |4. Securities Acquired (A) |5. Amount of |6. Owner- |7. Nature |
| | action | action | or Disposed of (D) | Securities | ship | of In- |
| | Date | Code | | Beneficially | Form: | direct |
| | | | | Owned at | Direct | Bene- |
| | (Month/ | | | End of | (D) or | ficial |
| | Day/ +-------+-----+-----------+------+----------+ Month | Indirect| Owner- |
| | Year) |Code |V |Amount |A/D |Price | | (I) | ship |
+---------------------------------+----------+-------+-----+-----------+------+----------+----------------+-----------+------------+
Common Stock 05/07/2002 S -11700 D $33.1518 D
Common Stock 05/13/2002 M 5300 A $5.3300 D
Common Stock 05/13/2002 M 5300 A $5.3300 D
Common Stock 05/13/2002 S -5300 D $33.0000 D
Common Stock 05/13/2002 S -5300 D $33.0026 D
Common Stock 05/22/2002 M 2933 A $16.0000 D
Common Stock 05/22/2002 S -2933 D $36.6882 12569 D
TABLE II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned
+-------------+--------+----------+---------+-----------+---------------------+----------------+----------+--------+-------+-------+
|1. |2. |3. |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- | | |Number of | |Securities | |ities |Secur- |of |
| |sion or | | |Derivative |Date Exercisable +-------+--------+ |Benefi- |ity: |In- |
| |Exercise| | |Securities |and Expiration Date | |Amount | |cially |Direct |direct |
| |Price of|Transac- |Transac- |Acquired(A)|(Month/Day/Year) | |or | |Owned |(D) or |Bene- |
|Title of |Deriv- |tion Date |tion Code|Disposed(D)+----------+----------+ |Number |Price of |at End |In- |ficial |
|Derivative |ative |(Month/ +------+--+-----+-----+Date Exer-|Expira- | |of |Derivative|of |direct |Owner- |
|Security |Security|Day/Year) |Code |V |(A) |(D) |cisable |tion Date |Title |Shares |Security |Month |(I) |ship |
+-------------+--------+----------+------+--+-----+-----+----------+----------+-------+--------+----------+--------+-------+-------+
Stock Options $5.33 05/13/2002 M 5300 09/29/2000 09/29/2009 Common 5300 $5.3300 D
(Right to buy) Stock
Stock Options $5.33 05/13/2002 M 5300 09/29/2000 09/29/2009 Common 5300 $5.3300 68406 D
(Right to buy) Stock
Stock Options $16 05/22/2002 M 2933 06/23/2001 06/23/2010 Common 2933 $16.0000 5867 D
(Right to buy) Stock
Explanation of Responses:
This trade occured pursuant to a 10b5-1 Trading Plan.
SIGNATURE OF REPORTING PERSON
/s/ JULIA D. PALM
DATE
06/04/2002
