X0303 4 2010-06-18 0 0001374310 CBOE Holdings, Inc. CBOE 0001433621 Griffith Bradley G C/O CBOE HOLDINGS, INC. 400 SOUTH LASALLE STREET CHICAGO IL 60605 1 0 0 0 Class A Common Stock 2010-06-18 5 J 0 E 80000 A 80000 D Class A Common Stock 2010-06-18 5 J 0 E 80000 D 0 D Class A-1 Common Stock 2010-06-18 5 J 0 E 40000 A 40000 D Class A-2 Common Stock 2010-06-18 5 J 0 E 40000 A 40000 D Unrestricted Common Stock 2010-06-18 4 P 0 300 29 A 7847 D Represents shares of Class A Common Stock received from the Company in connection with the Company's restructuring transaction, a merger exempt from Section 16(b) pursuant to Rule 16b-7 and approved by the board of directors of the Company in accordance with Rule 16b-3. Pursuant to a reclassification exempt under Rule 16b-7, each share of Class A Common Stock not sold in the Company's initial public offering converted into one-half of one share of Class A-1 Common Stock and one-half of one share of Class A-2 Common Stock upon completion of the Company's initial public offering. Each issued and outstanding share of Class A-1 Common Stock and Class A-2 Common Stock shall automatically convert (without any action by the holder) into one share of Unrestricted Common Stock on the one hundred eightieth (180th) and three hundred sixtieth (360th) day, respectively, following the date that shares of CBOE Holdings Unrestricted Common Stock are issued in the Company's initial public offering, subject in each case to the Company's right to delay such conversion in connection with an organized sale. Purchased pursuant to CBOE Holding, Inc.'s reserved share program in connection with its initial public offering. /s/ Patrick Sexton, attorney-in-fact 2010-06-18