Common use of Your Signature Clause in Contracts

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- Signature Guarantee(2) ------------------------------ In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- Signature Guarantee(2Guarantee:(1) ------------------------------ ------------------------------------------------ In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two three years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- ------------------------------------------------------------- Signature Guarantee(2Guarantee:(1) ------------------------------ ------------------------------------------- In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- ------------------ Signature Guarantee(2) ------------------------------ Guarantee:* -------------------------------------------- In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible NoteSIGN EXACTLY AS YOUR NAME APPEARS ON THE OTHER SIDE OF THIS NOTE) Date: -------------------- ------------------- Signature Guarantee(2) ------------------------------ Guarantee: * -------------------------------------------- In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- ------------------------------------------------------------------ Signature Guarantee(2Guarantee:(1) ------------------------------ ------------------------------------------------ In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two three years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- __________________ Signature Guarantee(2) ------------------------------ Guarantee: * ____________________________________________ In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company Issuers or any Affiliate of the CompanyIssuers, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW

Your Signature. (Sign exactly as your name appears on the other side of this Convertible Note) Date: -------------------- ------------------- Signature Guarantee(2) ------------------------------ Guarantee: * -------------------------------------------- In connection with any transfer of any of the Notes evidenced by this certificate occurring prior to the date that is two years after the later of the date of original issuance of such Notes and the last date, if any, on which such Notes were owned by the Company or any Affiliate of the Company, the undersigned confirms that such Notes are being transferred: CHECK ONE BOX BELOW