For the purposes of this Agreement, notices and all other communications provided for in the Agreement (including any Notice of Termination) shall be in writing and shall be deemed to have been duly given when personally delivered or sent by Certified mail, return receipt requested, postage prepaid, addressed to the respective addresses last given by one Party to another Party or, if none, in the case of the Company or DuPont, to the Company’s headquarters directed to the attention of the Company’s General Counsel and, in the case of Executive, to the most recent address shown in the personnel records of the Company or its Affiliates. All notices and communications shall be deemed to have been received on the date of personal delivery thereof or on the third business day after the mailing thereof, except that notice of change of address shall be effective only upon receipt.