Metabolix, Inc. Common Stock Certificate

Summary

This document certifies that the named individual or entity owns fully paid and non-assessable shares of common stock in Metabolix, Inc., a Delaware corporation. The shares are transferable on the corporation's books by the holder or an authorized attorney upon proper endorsement and surrender of the certificate. The certificate must be countersigned by the transfer agent to be valid. It also notes that the corporation may issue more than one class or series of stock and will provide details about stock rights to shareholders upon request.

EX-4.1 4 a2173138zex-4_1.txt EXHIBIT 4.1 Exhibit 4.1 [GRAPHIC] NUMBER SHARES MC METABOLIX SEE NOTE where nature performs(R) [LOGO] INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE METABOLIX, INC. CUSIP 591018 80 9 SEE REVERSE FOR CERTAIN DEFINITIONS THIS CERTIFIES THAT is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, $.01 PAR VALUE, OF METABOLIX, INC. 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: /S/ JAMES J. BARBER [SEAL] /S/ THOMAS G. AUCHINCLOSS, JR. PRESIDENT TREASURER COUNTERSIGNED AND REGISTERED: AMERICAN STOCK TRANSFER & TRUST COMPANY TRANSFER AGENT AND REGISTRAR BY AUTHORIZED SIGNATURE THE CORPORATION IS AUTHORIZED TO ISSUE MORE THAN ONE CLASS OR SERIES OF STOCK. 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 OR 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 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 of survivorship and not as tenants Act____________ in common (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 capital 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 THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER. X ---------------------------------------------------- Signature Guaranteed ----------------------------------------------------