All notices, consents, requests, claims, demands and other communications under this Agreement shall be in writing and shall be deemed given (a) on the date of delivery if delivered personally or sent via electronic mail, (b) on the first (1st) Business Day following the date of dispatch if sent by a nationally recognized overnight courier (providing proof of delivery) or (c) on the third (3rd) Business Day following the date of mailing if delivered by registered or certified mail, return receipt requested, postage prepaid, in each case to the parties at the following addresses (or at such other address for a party as shall be specified by like notice): (a) if to Parent or Merger Sub, in accordance with the provisions of the Merger Agreement, and (b) if to Stockholder, to Stockholder’s address, facsimile number or email address set forth on a signature page hereto, or to such other address, facsimile number or email address as Stockholder may hereafter specify in writing to Parent and Merger Sub by like notice made pursuant to this Section 5.1 .