This Amendment may be executed by counterparts, each such counterpart shall be deemed to be an original, but all such counterparts together shall constitute but one contract. The parties hereby acknowledge and agree that facsimile signatures or signatures transmitted by electronic mail in so-called “PDF” format shall be legal and binding and shall have the same full force and effect as if an original of this Amendment had been delivered. Sellers and Purchaser (i) intend to be bound by the signatures on any document sent by facsimile or electronic mail, (ii) are aware that the other party will rely on such signatures, and (iii) hereby waive any defenses to the enforcement of the terms of this Amendment based on the foregoing forms of signature.