--------                                  UNITED STATES SECURITIES AND EXCHANGE COMMISSION             -----------------------------
 FORM 4                                                WASHINGTON, D.C. 20549                                   OMB APPROVAL
--------                                                                                               -----------------------------
/ / Check this box if no                    STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP                OMB Number:       3235-0287
    longer subject to                                                                                   Expires: January 31, 2005
    Section 16.  Form 4 or    Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,   Estimated average burden
    Form 5 obligations may       Section 17(a) of the Public Utility Holding Company Act of 1935 or     hours per response .... 0.5
    continue.  SEE                       Section 30(h) of the Investment Company Act of 1940           -----------------------------
    Instruction 1(b).
(Print or Type Responses)
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1. Name and Address of Reporting Person*     2. Issuer Name AND Ticker or Trading Symbol     6. Relationship of Reporting Person(s)
                                                                                                 to Issuer (Check all applicable)
    PALM           JULIA            D           Charles River Laboratories Int'l., Inc (CRL)        Director             10% Owner
                                                                                               ----                 ----
-------------------------------------------- ------------------------------------------------   X   Officer (give        Other
    (Last)        (First)        (Middle)    3. I.R.S. Identification   4. Statement for       ----          title  ---- (specify
                                                Number of Reporting        Month/Day/Year                    below)       below)
                                                Person, if an entity                           Sr. Vice President
                                                (voluntary)
    251 Ballardvale Street                                                  02/28/2003
--------------------------------------------    ---------------------      ------------------ -------------------------------------
                  (Street)                                              5. If Amendment,      7. Individual or Joint/Group Filing
                                                                           Date of Original       (Check Applicable Line)
                                                                           (Month/Day/Year)   _X_Form filed by One Reporting Person
                                                                                              ___Form filed by More than One
    Wilmington     MA               01887                                                        Reporting Person
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    (City)       (State)            (Zip)        TABLE I - NON-DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED
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1. Title of   2. Trans-  2A. Deemed     3. Trans-     4. Securities Acquired (A)      5. Amount of      6. Owner-     7. Nature
   Security      action      Execution     action        or Disposed of (D)              Securities        ship          of In-
   (Instr. 3)    Date        Date,         Code          (Instr. 3, 4 and 5)             Beneficially      Form:         direct
                             if any        (Instr. 8)                                    Owned Follow-     Direct        Bene-
                 (Month/     (Month/                                                     ing Reported      (D) or        ficial
                 Day/        Day/          ------------------------------------------    Transaction(s)    Indirect      Owner-
                 Year)       Year)                                   (A) or              (Instr. 3         (I)           ship
                                           Code    V       Amount    (D)     Price        and 4)           (Instr. 4)    (Instr. 4)

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Common Stock     02/07/03                   M               5,000     A     $ 5.33                             D
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Common Stock     02/07/03                   S               5,000     D     $29.64          1,569              D
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Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, SEE Instruction 4(b)(v).

POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS FORM
ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALIED OMB CONTROL NUMBER.




                                                                  Page 1 of 1





                            TABLE II - DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED
                                   (e.g., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES)

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1. Title of Derivative Security     2. Conver-   3. Trans-   3A. Deemed   4. Transac-   5. Number of Deriv-      6. Date Exer-
   (Instr. 3)                          sion or      action       Execution   tion Code     ative Securities Ac-     cisable and Ex-
                                       Exercise     Date         Date,       (Instr. 8)    quired (A) or Dis-       piration Date
                                       Price of    (Month/       if any                    posed of (D)             (Month/Day/
                                       Deriv-       Day/         (Month/                   (Instr. 3, 4, and 5)     Year)
                                       ative        Year)        Day/
                                       Security                  Year)


                                                                          --------------------------------------  ----------------
                                                                                                                  Date     Expira-
                                                                                                                  Exer-    tion
                                                                           Code    V        (A)        (D)        cisable  Date

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Stock Options (Right to buy)            $5.33      02/07/03                 M                         5,000      03/21/01 09/29/09
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--------------------------------------------------------------------------------------------------------
7. Title and Amount of          8. Price of      9. Number of     10. Ownership     11. Nature of
   Underlying Securities           Derivative       Derivative        Form of           Indirect
   (Instr. 3 and 4)                Security         Securities        Derivative        Beneficial
                                   (Instr. 5)       Beneficially      Securities:       Ownership
                                                    Owned             Direct (D) or     (Instr. 4)
                                                    Following         Indirect (I)
                                                    Reported          (Instr. 4)
                                                    Transaction(s)
   -----------------------                          (Instr. 4)
   Title         Amount or
                 Number of
                 Shares

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Common Stock      5,000              $5.33           16,006                D
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Explanation of Responses:


          SEE ATTACHED PAGE(S)



          /s/ Deborah E. Gray             02/28/03
    -----------------------------------  -----------
      **Signature of Reporting Person       Date

By: Deborah E. Gray, Attorney-in-fact
PALM, JULIA D
251 Ballardvale Street

Wilmington MA 01887
Charles River Laboratories Int'l., Inc (CRL)
02/2003



** Intentional misstatements or omissions of facts constitute Federal Criminal Violations.
   SEE 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed.
      If space is insufficient, SEE Instruction 6 for procedure.

POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED IN THIS FORM
ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY VALIED OMB CONTROL NUMBER.




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