Exhibit 3.3 - -------------- ------------- Number [LOGO] Shares CDS - -------------- ------------- Control Delivery Systems, Inc. Incorporated Under the Laws of the State of Delaware SEE REVERSE FOR CERTAIN DEFINITIONS COMMON STOCK This certifies that CUSIP 21238T 10 6 is the owner of FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $.01 PAR VALUE, OF CONTROL DELIVERY SYSTEMS, INC. transferable on the books of the Company by the holder hereof in person or by duly authorized attorney upon surrender of this Certificate properly endorsed or assigned. This Certificate and the shares represented hereby are issued and shall be held subject to the laws of the State of Delaware and to the provisions of the Certificate of Incorporation and the By-Laws of the Company as now or hereafter amended to which the holder of this Certificate assents by its acceptance. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. Witness the facsimile seal of the Company and the facsimile signatures of its duly authorized officers. Dated: /s/ [ILLEGIBLE] [SEAL] /s/ [ILLEGIBLE] TREASURER PRESIDENT - ---------------------------------------------------- ---------------------------------------------------------------------------- AMERICAN BANK NOTE COMPANY PRODUCTION COORDINATOR: LISA MARTIN: 215-764-8625 55TH STREET AND SANSOM STREET PROOF OF JANUARY 23, 2001 PHILADELPHIA, PA 19139 CONTROL DELIVERY SYSTEMS, INC. (215) 764-8600 H 69012 FACE - ---------------------------------------------------- ---------------------------------------------------------------------------- SALES: D. BURNS: 617-786-7600 OPERATOR: RL - ---------------------------------------------------- ---------------------------------------------------------------------------- /NET/BANKNOTE/HOME 46/CONTROL H69012 rev 1 - ---------------------------------------------------- ---------------------------------------------------------------------------- COUNTERSIGNED AND REGISTERED: AMERICAN STOCK TRANSFER & TRUST COMPANY TRANSFER AGENT AND REGISTRAR, BY AUTHORIZED SIGNATURE. CONTROL DELIVERY SYSTEMS, INC. The Company is authorized to issue more than one class of stock. A statement of the powers, designations, preferences, and the relative participating, optional or other rights of each class and series of stock and the qualifications, limitations or restrictions thereon will be provided without charge to each stockholder upon request to the Company. 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 survivorship and not as tenants under Uniform Gifts to Minors in common 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 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 Company with full power of substitution in the premises. Dated _________________________ X ___________________________________________ 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 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 17Ad-15.