Optimer Pharmaceuticals, Inc. Common Stock Certificate

Summary

This document certifies that the named holder owns fully paid and non-assessable shares of common stock in Optimer Pharmaceuticals, Inc., a Delaware corporation. The shares are transferable on the company's books by the holder or an authorized agent upon proper endorsement and surrender of the certificate. The certificate is only valid when countersigned by the transfer agent and registered by the registrar. It also outlines standard procedures for transfer and assignment, and provides information on shareholder rights upon request.

EX-4.1 3 a2175846zex-4_1.htm EXHIBIT 4.1
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Exhibit 4.1

COMMON STOCK NUMBER 0001		COMMON STOCK SHARES
		CUSIP 68401H 10 4
	INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE	SEE REVERSE FOR CERTAIN DEFINITIONS

THIS CERTIFIES THAT

PROOF

is the record holder of

FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK, $0.001 PAR VALUE PER SHARE, OF
		OPTIMER PHARMACEUTICALS, INC.
transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate properly endorsed.
This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar.
	WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers.
DATED:
OPTIMER PHARMACEUTICALS, INC. INCORPORATED NOVEMBER 18, 1998 DELAWARE
*[SIGNATURE TO APPEAR HERE]*			*[SIGNATURE TO APPEAR HERE]*
SECRETARY			PRESIDENT

		COUNTERSIGNED AND REGISTERED:
		AMERICAN STOCK TRANSFER & TRUST COMPANY
		TRANSFER AGENT AND REGISTRAR
		BY:
		AUTHORIZED SIGNATURE

OPTIMER PHARMACEUTICALS, 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 or series thereof of the Corporation, 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	UNIF GIFT MIN ACT	-		Custodian
TEN ENT	=	as tenants by the entireties			(Cust)		(Minor)
JT TEN	=	as joint tenants with right			under Uniform Gifts to Minors
		of survivorship and not as tenants in common			Act
						(State)
			UNIF TRF MIN ACT	-		Custodian	(until age )
					(Cust)
							under Uniform Transfers
					(Minor)
					to Minors Act
						(State)

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 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(es) 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.
SIGNATURES 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-15.

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