OMB APPROVAL
                                                OMB Number:            3235-0287
                                                Expires        December 31, 2001
                                                Estimated average burden
                                                hours per response...........0.5


                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                     FORM 4

                  STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

    Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
       Section 17(a) of the Public Utility Holding Company Act of 1935 or
               Section 30(f) of the Investment Company Act of 1940

[X]  Check box if no longer subject of Section 16. Form 4 or Form 5 obligations
     may continue. See Instruction 1(b).


________________________________________________________________________________
1.   Name and Address of Reporting Person*

     Credit Suisse First Boston,
     on behalf of the investment banking business of
     the Credit Suisse First Boston business unit
--------------------------------------------------------------------------------
   (Last)                           (First)             (Middle)

     11 Madison Avenue
--------------------------------------------------------------------------------
                                    (Street)

     New York                         NY                 10010
--------------------------------------------------------------------------------
   (City)                           (State)              (Zip)


________________________________________________________________________________
2.   Issuer Name and Ticker or Trading Symbol

     Charles River Laboratories International, Inc. (CRL)
________________________________________________________________________________
3.   IRS Identification Number of Reporting Person, if an Entity (Voluntary)

________________________________________________________________________________
4.   Statement for Month/Year

     February 2002
________________________________________________________________________________
5.   If Amendment, Date of Original (Month/Year)

________________________________________________________________________________
6.   Relationship of Reporting Person to Issuer
     (Check all applicable)

     [_]  Director                       [ ]  10% Owner
     [_]  Officer (give title below)     [X]  Other (specify below)
                                              Transactions reported decreased
                                              Reporting Person's ownership below
                                              10%
________________________________________________________________________________
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
================================================================================

                                                                                                                6.
                                                                 4.                              5.             Owner-
                                                                 Securities Acquired (A) or      Amount of      ship
                                                    3.           Disposed of (D)                 Securities     Form:     7.
                                                    Transaction  (Instr. 3, 4 and 5)             Beneficially   Direct    Nature of
                                      2.            Code         ------------------------------- Owned at End   (D) or    Indirect
1.                                    Transaction   (Instr. 8)                   (A)             of Month       Indirect  Beneficial
Title of Security                     Date          ------------     Amount      or     Price    (Instr. 3      (I)       Ownership
(Instr. 3)                            (mm/dd/yy)     Code                        (D)             and 4)         (Instr.4) (Instr. 4)
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                  
Common Stock                           2/21/02       J             1,160,742     D                        0       (I)   (1)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                46,224     D                        0       (I)   (2)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                57,076     D                        0       (I)   (3)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                67,861     D                        0       (I)   (4)(13)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                25,200     D                        0       (I)   (5)(13)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                18,767     D                        0       (I)   (7)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                 3,660     D                        0       (I)   (8)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                 5,215     D                        0       (I)   (9)(14)(16)
                                                                                                                        (17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J               199,111     D                        0       (I)   (15)(16)(17)
                                                                                                                        (21)(23)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J               130,793     D                        0       (I)   (16)(17)(19)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                12,791     A                   25,750       (I)   (24)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                   121     A                      244       (I)   (25)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                11,031     A                   22,047       (I)   (26)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02       J                15,780     A                   46,555       (I)   (27)(17)
------------------------------------------------------------------------------------------------------------------------------------





------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                 15,780     A                   46,555       (I)   (28)(15)
                                                                                                                        (16)(17)(23)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                      6     A                       12       (I)   (29)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                  1,529     A                    3,078       (I)   (30)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                  1,913     A                    3,865       (I)   (31)(13)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                    917     A                    1,856       (I)   (32)(12)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                  2,151     A                    4,334       (I)   (33)(14)(16)
                                                                                                                        (17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                           2/21/02      J                  6,165     A                   12,411       (I)   (34)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                                                                                        711,921       (I)   (6)(15)
                                                                                                                        (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                                                                                        846,491       (I)   (10)(14)(16)
                                                                                                                        (17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                                                                                        967,888       (I)   (11)(14)(16)
                                                                                                                        (17)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                                                                                         24,131       (I)   (16)(17)(20)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                                                                                        127,864       (I)   (15)(16)(17)
                                                                                                                        (20)
------------------------------------------------------------------------------------------------------------------------------------
Common Stock                                                                                          1,342       (I)   (16)(17)(18)
------------------------------------------------------------------------------------------------------------------------------------

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
valid OMB control number.

                                                                 SEC 1474 (3-99)



FORM 4 (continued)

Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned
         (e.g., puts, calls, warrants, options, convertible securities)

================================================================================

                                                                                                                    10.
                                                                                                          9.        Owner-
                                                                                                          Number    ship
                                                                                                          of        Form
                    2.                                                                                    Deriv-    of
                    Conver-                    5.                              7.                         ative     Deriv-   11.
                    sion                       Number of                       Title and Amount           Secur-    ative    Nature
                    or                         Derivative    6.                of Underlying     8.       ities     Secur-   of
                    Exer-             4.       Securities    Date              Securities        Price    Bene-     ity:     In-
                    cise     3.       Trans-   Acquired (A)  Exercisable and   (Instr. 3 and 4)  of       ficially  Direct   direct
                    Price    Trans-   action   or Disposed   Expiration Date   ----------------  Deriv-   Owned     (D) or   Bene-
1.                  of       action   Code     of(D)         (Month/Day/Year)            Amount  ative    at End    In-      ficial
Title of            Deriv-   Date     (Instr.  (Instr. 3,    ----------------            or      Secur-   of        direct   Owner-
Derivative          ative    (Month/  8)       4 and 5)      Date     Expira-            Number  ity      Month     (I)      ship
Security            Secur-   Day/     ------   ------------  Exer-    tion               of      (Instr.  (Instr.   (Instr.  (Instr.
(Instr. 3)          ity      Year)              (A)   (D)    cisable  Date     Title     Shares  5)       4)        4)       4)
------------------------------------------------------------------------------------------------------------------------------------
                                                                                            
Warrant             $5.19                                    Immed.   10/01/09 Common      26,247          3,455     (I)    (10)(14)
                                                                                Stock                                       (16)(17)
------------------------------------------------------------------------------------------------------------------------------------
Warrant             $5.19                                    Immed.   10/01/09 Common     184,166         24,242     (I)    (15)(16)
                                                                                Stock                                       (17)(21)
                                                                                                                            (23)
------------------------------------------------------------------------------------------------------------------------------------
Warrant             $5.19                                    Immed.   10/01/09 Common      17,495          2,303     (I)    (15)(16)
                                                                                Stock                                       (17)(22)
------------------------------------------------------------------------------------------------------------------------------------

Explanation of Responses:

(J)  Shares of Common Stock of Charles River Laboratories International, Inc.
     par value .01 per share ("Common Stock") were distributed to the partners
     of the partnership on a pro-rata basis.

(1)  These securities are held directly by DLJ Merchant Banking Partners II,
     L.P. ("Partners II"), which is a partnership.

(2)  These securities are held directly by DLJ Merchant Banking Partners II-A,
     L.P., ("Partners II-A"), which is a partnership.

(3)  These securities are held directly by DLJ Offshore Partners II, C.V.
     ("Offshore Partners II"), which is a partnership.

(4)  These securities are held directly by DLJ Diversified Partners, L.P.
     ("Diversified"), which is a partnership.

(5)  These securities are held directly by DLJ Diversified Partners-A, L.P.
     ("Diversified-A"), which is a partnership.

(6)  These securities are held directly by DLJMB Funding II, Inc. ("Funding
     II"), which is a Delaware corporation.

(7)  These securities are held directly by DLJ Millennium Partners, L.P.
     ("Millennium"), which is a partnership.

(8)  These securities are held directly by DLJ Millennium Partners-A, L.P.
     ("Millennium-A"), which is a partnership.

(9)  These securities are held directly by DLJ EAB Partners, L.P. ("EAB"),
     which is a partnership.

(10) These securities are held directly by DLJ ESC II, L.P. ("ESC II"), which
     is a partnership.

(11) These securities are held directly by DLJ First ESC, L.P. ("ESC"), which
     is a partnership.

(12) DLJ Merchant Banking II, Inc. ("MB II INC") is the Managing General
     Partner of each of Partners II, Partners II-A, Millennium, and
     Millennium-A and Advisory General Partner of Offshore Partners II. In
     addition, DLJ Merchant Banking II, LLC ("MB II LLC") is the Associate
     General Partner of each of Partners II, Partners II-A, Offshore Partners
     II, Millennium, Millennium-A, and EAB. MB II INC is also the Managing
     Member of MB II LLC.

(13) DLJ Diversified Partners, Inc. ("Diversified Partners") is the General
     Partner of each of Diversified and Diversified-A. DLJ Diversified
     Associates, L.P. ("Diversified Associates") is the Associate General
     Partner of each of Diversified and Diversified-A. Diversified Partners is
     also the General Partner of Diversified Associates.

(14) DLJ LBO Plans Management Corporation is the General Partner of EAB, ESC
     and ESC II.

(15) Credit Suisse First Boston Private Equity, Inc. ("CSFBPE")is the sole
     stockholder of each of MB II INC, Diversified Partners, Funding II, DLJ
     Investment Funding, Inc. ("IP Funding") and DLJ Investment Partners, Inc.

(16) Credit Suisse First Boston (USA) Inc. ("CSFB-USA"), a Delaware corporation
     formerly named Donaldson, Lufkin & Jenrette, Inc., is the parent of each
     of DLJCC, CSFBPE and DLJ LBO Plans Management Corporation.

(17) In accordance with Securities and Exchange Commission Release No. 34-39538
     (January 12, 1998), this Form 4 is being filed by Credit Suisse First
     Boston (the "Bank"), a Swiss bank, on behalf of itself and its
     subsidiaries, to the extent that they constitute part of the investment
     banking business (the "Reporting Person") of the Credit Suisse First
     Boston business unit (the "CSFB business unit"). The CSFB business unit is
     also comprised of an asset management business ("Asset Management"). The
     Reporting Person provides financial advisory and capital raising services,
     sales and trading for users and suppliers of capital around the world and
     invests in and manages private equity and venture capital funds. Asset
     Management provides asset management and investment advisory services to
     institutional, mutual fund and private investors worldwide. The address of
     the Bank's principal business and office is Uetlibergstrasse 231, P.O. Box
     900, CH 8070 Zurich, Switzerland. The address of the Reporting Person's
     principal business and office in the United States is Eleven Madison
     Avenue, New York, New York 10010.

     The ultimate parent company of the Bank is Credit Suisse Group ("CSG"), a
     corporation formed under the laws of Switzerland. CSG is a global
     financial services company with two distinct business units. In addition
     to the CSFB business unit, CSG and its consolidated subsidiaries are
     comprised of the Credit Suisse Financial Services business unit. CSG's
     business address is Paradeplatz 8, P.O. Box 1, CH 8070 Zurich,
     Switzerland.

     CSG, for purposes of the federal securities laws, may be deemed ultimately
     to control the Bank and the Reporting Person. CSG, its executive officers
     and directors, and its direct and indirect subsidiaries (including Asset
     Management and the Credit Suisse Financial Services business unit) may
     beneficially own shares of the securities of the issuer to which this
     schedule relates (the "Shares") and such Shares are not reported in this
     statement. CSG disclaims beneficial ownership of Shares beneficially owned
     by its direct and indirect subsidiaries, including the Reporting Person.
     The Reporting Person disclaims beneficial ownership of Shares beneficially
     owned by CSG, Asset Management and the Credit Suisse Financial Services
     business unit.

(18) These securities are held directly by DLJ Capital Corporation ("DLJCC"),
     which is a Delaware corporation.

(19) These securities are held directly by Sprout Capital VIII, L.P. ("Sprout
     VIII"), which is a partnership. DLJCC is the Managing General partner of
     Sprout VIII.

(20) These securities are held directly by Sprout Venture Capital, L.P.
     ("Sprout"), which is a partnership. DLJCC is the general partner of
     Sprout.

(21) These securities are held directly by DLJ Investment Partners, L.P.
     ("DLJIP"), which is a partnership.

(22) These securities are held directly by DLJ Investment Funding, Inc., a
     Delaware corporation.

(23) DLJ Investment Partners, Inc. is the general partner of DLJIP.

(24) These securities are held directly by MB II LLC.

(25) These securities are held directly by DLJ MB II, INC.

(26) These securities are held directly by MB II INC.

(27) These securities are held directly by DLJ Investment Associates, L.P.,
     which is a partnership, and itself a partner of DLJIP.

(28) These securities are held directly by DLJ Investment Partners, Inc.

(29) These securities are held directly by DLJ Offshore Management N.V. (DLJ
     Off Mgt NV), which is a partner of Offshore Partners II.

(30) These securities are held directly by DLJ Strategic Partners, L.P., which
     is a partnership, and itself a partner of Diversified.

(31) These securities are held directly by Diversified Partners.

(32) These securities are held directly by Diversified Associates.

(33) These securities are held directly by DLJ LBO Plans Management Corp.

(34) These securities are held directly by DLJ Venture Capital Partners, a
     partner of Sprout VIII.




Credit Suisse First Boston, on behalf of the
  investment banking business of the
  Credit Suisse First Boston business unit

/s/ Ivy Dodes                                            03/11/02
---------------------------------------------           ----------
By: Ivy Dodes                                              Date
    Managing Director
**Signature of Reporting Person


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

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
valid OMB number.