Notice. Any notice or other communication required or permitted under the Plan or this Agreement must be in writing and must be delivered personally, sent by certified, registered or express mail, or sent by overnight courier, at the sender's expense. Notice will be deemed given when delivered personally or, if mailed, three days after the date of deposit in the United States mail or, if sent by overnight courier, on the regular business day following the date sent. Notice to the Company should be sent to ​, Attention: Company Secretary. Notice to the Grantee should be sent to his or her business address.

Notices. Any notice required to be given or delivered to the Company shall be in writing and addressed to the Corporate Secretary of the Company at its principal corporate offices. Any notice required to be given or delivered to Grantee shall be in writing and addressed to Grantee at the address indicated above or to such other address as Grantee may designate in writing from time to time to the Company. All notices shall be deemed effectively given upon personal delivery, # three (3) days after deposit in the United States mail by certified or registered mail (return receipt requested), # one (1) business day after its deposit with any return receipt express courier (prepaid), or # one (1) business day after transmission by facsimile or email.

Notices. Any notice required to be given or delivered to the Plan Administrator or the Company under the terms of this Agreement shall be in writing (including a writing delivered by facsimile transmission or electronic mail) and addressed to the Plan Administrator at the principal corporate office of the Company. Any notice required to be given or delivered to Participant shall be in writing (including a writing delivered by facsimile transmission or electronic mail) and addressed to Participant at the address indicated above or to such other address as such party may designate in writing from time to time to the Plan Administrator. All notices shall be deemed to have been given or delivered upon: # personal delivery; # five (5) days after deposit in the United States mail by certified or registered mail (return receipt requested); # one (1) business day after deposit with any return receipt express courier (prepaid); or # when receipt is acknowledged after transmission by facsimile or electronic mail.

Section # Notice. Any notice or other communication required or permitted under the Plan must be in writing and must be delivered personally, sent by certified, registered or express mail, or sent by overnight courier, at the sender’s expense. Notice will be deemed given # when delivered personally or, # if mailed, three days after the date of deposit in the U.S. mail or, # if sent by overnight courier, on the regular business day following the date sent. Notice to the Corporation should be sent to CBOE Holdings, Inc., 400 South LaSalle Street, Chicago, Illinois 60605, Attention: General Counsel. Notice to the Participant should be sent to the address set forth on the Corporation’s records. Either party may change the address to which the other party must give notice under this Section 10.13 by giving the other party written notice of such change, in accordance with the procedures described above.

Section # Notices. All notices and other communications required hereunder shall be in writing and shall be delivered personally or mailed by registered or certified mail, return receipt requested, or by overnight express courier service. In the case of the Participant, mailed notices shall be addressed to him or her at the home address which he or she most recently communicated to the Company in writing. In the case of the Company, mailed notices shall be addressed to the Plan Administrator.

Method of Notice. For the purpose of this Agreement, notices and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given when personally delivered, sent by overnight courier or by facsimile with confirmation of receipt or on the third business day after being mailed by United States registered mail, return receipt requested, postage prepaid, addressed to Company at its principal office address and facsimile number, directed to the attention of the Board with a copy to the Secretary of Company, and to Executive at Executive’s residence address, personal email address provided by Executive to Company, and facsimile number, if any, on the records of Company or to such other address as either Party may have furnished to the other in writing in accordance herewith except that notice of change of address shall be effective only upon receipt.

Notices. Any notice required or permitted under this Agreement shall be in writing and shall be deemed sufficient when delivered personally to the party to whom it is addressed or when deposited into the United States Mail as registered or certified mail, return receipt requested, postage prepaid, addressed to the Company, Attention: Corporate Secretary, at its principal executive offices or to Recipient at the address of Recipient in the Company’s records, or at such other address as such party may designate by ten (10) days’ advance written notice to the other party.

Notices. Any notice required or permitted under this Agreement shall be in writing and shall be deemed sufficient when delivered personally to the party to whom it is addressed or when deposited into the United States Mail as registered or certified mail, return receipt requested, postage prepaid, addressed to the Company, Attention: Corporate Secretary, at its principal executive offices or to Recipient at the address of Recipient in the Company’s records, or at such other address as such party may designate by ten (10) days’ advance written notice to the other party.

Notices. Any notice to the Company provided for herein shall be in writing (including electronically) to the Company, marked Attention: General Counsel, and any notice to Grantee shall be addressed to Grantee at Grantee’s address on file with the Company at the time of such notice. Except as otherwise provided herein, any written notice shall be deemed to be duly given if and when delivered personally or deposited in the United States mail, postage and fees prepaid, and addressed as aforesaid. Any party may change the address to which notices are to be given hereunder by written notice to the other party as herein specified (provided that for this purpose any mailed notice shall be deemed given on the third business day following deposit of the same in the United States mail).

Notices. Any notice provided under this Agreement shall be in writing and shall be deemed to have been effectively given # upon receipt when delivered personally, # one day after sending when sent by private express mail service or electronic mail, or # 5 days after sending when sent by regular mail to the address as may have been designated by the Company or Director by notice to the other given as provided herein.