All notices or other communications given or made hereunder shall be in writing and shall be delivered or mailed by registered mail or delivered by email or facsimile with written confirmation of receipt to the Optionee and/or to the Company at the addresses shown on the letterhead above, or at such other place as the Company may designate by written notice to the Optionee. The Optionee is responsible for notifying the Company in writing of any change in the Optionee’s address, and the Company shall be deemed to have complied with any obligation to provide the Optionee with notice by sending such notice to the address indicated below.