Exhibit 4.1 COMMON SHARES VYYO INC. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE THIS CERTIFICATE IS TRANSFERABLE IN BOSTON, MA AND NEW YORK, NY CUSIP 918458 10 0 SEE REVERSE FOR CERTAIN DEFINITIONS This Certifies that is the record holder of FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, PAR VALUE $0.0001 PER SHARE, OF VYYO INC. transferable only 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 unless countersigned and registered by the Transfer Agent and Registrar. In Witness Whereof, the Corporation has caused this Certificate to be executed and attested to by the manual or facsimile signatures of its duly authorized officers, under a facsimile of its corporate seal to be affixed hereto. Dated: _______________________ ________________________ SECRETARY CHIEF EXECUTIVE OFFICER AND CHAIRMAN OF THE BOARD COUNTERSIGNED AND REGISTERED: _________________________ EQUISERVE TRUST COMPANY, N.A. TRANSFER AGENT AND REGISTRAR BY ____________________________ AUTHORIZED SIGNATURE Page 1 VYYO INC. Upon request the Corporation will furnish any holder of shares of Common Stock of the Corporation, without charge, with a full statement of the powers, designations, preferences, and relative, participating, optional or other special rights of any class or series of capital stock 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 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 .............................................................. (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) Page 1 Shares of 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 --------------------------------------- In presence of X ------------------------------ NOTICE: X ------------------------------------- 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 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 SEC RULE 17Ad-15. Page 2