<PAGE>
COMMON STOCK COMMON STOCK
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NUMBER SHARES
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VERSICOR
INCORPORATED UNDER THE LAWS SEE REVERSE FOR
OF THE STATE OF DELAWARE CERTAIN DEFINITIONS
CUSIP 925314 10 6
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THIS CERTIFIES THAT
IS THE RECORD HOLDER OF
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FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK,
PAR VALUE $0.001 PER SHARE, OF
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------------------------------- VERSICOR, INC. --------------------------------
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transferable on the books of the Corporation by the holder hereof in person
or by duly authorized attorney upon surrender of this Certificate properly
endorsed. This certificate is not valid until countersigned and registered by
the Transfer Agent and Registrar.
WITNESS the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.
Dated:
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/s/ Peter T. Healy VERSICOR, INC. /s/ G.F. Horner III
SECRETARY CORPORATE CHIEF EXECUTIVE OFFICER AND
SEAL PRESIDENT
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COUNTERSIGNED AND REGISTERED:
AMERICAN STOCK TRANSFER & TRUST COMPANY
(NEW YORK, N.Y.)
TRANSFER AGENT AND REGISTRAR
BY
AUTHORIZED SIGNATURE
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VERSICOR INC.
The Corporation will furnish without charge to each stockholder who so
requests a statement of the powers, designations, preferences and relative,
participating, optional, or other special rights of each class of stock of
the Corporation or series thereof and the qualifications, limitations or
restrictions of such preferences and/or rights. Such requests shall be made
to the Corporation's Secretary at the principal office of the Corporation.
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:
<TABLE>
<S> <C> <C> <C> <C> <C>
TEN COM -- as tenants in common UNIF GIFT MIN ACT-- ................. Custodian .................
TEN ENT -- as tenants by the entireties (Cust) (Minor)
JT TEN -- as joint tenants with right of under Uniform Gifts to Minors
survivorship and not as tenants
in common Act.................................................
(State)
UNIF TRF MIN ACT-- ............... Custodian (until age ..............)
(Cust)
............................under Uniform Transfers
to Minors Act.......................................
(State)
</TABLE>
Additional abbreviations may also be used though not in the above list.
FOR VALUE RECEIVED, __________________ hereby sell, assign and transfer unto
<TABLE>
<S> <C> <C>
PLEASE INSERT SOCIAL SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE
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</TABLE>
_____________________________________________________________________________
(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 ____________________________
X ___________________________________
X ___________________________________
NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT
MUST CORRESPOND WITH THE NAME(S) AS
WRITTEN UPON THE FACE OF THE
CERTIFICATE IN EVERY PARTICULAR,
WITHOUT ALTERATION OR ENLARGEMENT
OR ANY CHANGE WHATEVER.
Signature(s) Guaranteed
By ________________________________
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 17Ad-18.
