<PAGE>
Exhibit 4.1
[SEAL] CHARLES RIVER LABORATORIES [SEAL]
INTERNATIONAL,INC.
CUSIP 159864 10 7
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
[ILLEGIBLE]
FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, $.01 PAR VALUE OF
CERTIFICATE OF STOCK
Dated:
[SIGNATURE] [SIGNATURE]
[SEAL]
Secretary President
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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
The Corporation will furnish without charge to each stockholder who so requests
the powers, designations, preferences and relative, participating, optional or
other special rights of each class of stock of series thereof and the
qualifications, limitations or restrictions of such preferences and/or rights.
The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:
TEN COM -- as tenants in common
TEN ENT -- as tenants by the entireties
JT TEN -- as joint tenants with right of survivorship
and not as tenants in common
UNIF GIFT MIN ACT- __________________ Custodian ____________________
(Cust) (Minor)
under Uniform Gifts to Minors Act
____________________
[Illegible]
Additional abbreviations may also be used though not in the above list.
For Value Received, ____________ hereby sell, assign and transfer unto
PLEASE INSERT SOCIAL SECURITY NUMBER OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE
/---------------------------/
/ /
/---------------------------/
_______________________________________________________________________________
_______________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING ZIP CODE OF ASSIGNEE)
_______________________________________________________________________________
_________________________________________________________________________Shares
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
________________________________________________________________________Attorney
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.
Dated:______________________
____________________________________________________________
NOTICE: The signature to the Assignment must correspond with
the name as written upon the face of the certificate in
every aspect, without alteration or enlargement or any
change whatever.
Signature(s) Guaranteed:________________________________________________________
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND
LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM),
PURSUANT TO S.E.C. RULE 17A-15.
