All notices and other communications given or made pursuant to this Agreement shall be in writing and shall be deemed effectively given upon the earlier of actual receipt, or (i) personal delivery to the party to be notified, (ii) when sent, if sent by electronic mail or facsimile (if any) during normal business hours of the recipient, and if not sent during normal business hours, then on the recipient’s next Business Day, (iii) five (5) Business Days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (iv) one (1) Business Day after deposit with a nationally recognized overnight courier, freight prepaid, specifying next Business Day delivery, with written verification of receipt. All communications sent to the Company shall be sent to: Pure Acquisition Corp., 421 W. 3 rd Street, Suite 1000, Fort Worth, Texas 76102, Attention: Chief Financial Officer, with a copy to the Company’s counsel at Thompson & Knight, One Arts Plaza, 1722 Routh Street, Suite 1500, Dallas, Texas 75201, Attention: Amy Curtis.