X0306 4 2017-02-15 0 0001374310 CBOE Holdings, Inc. CBOE 0001493844 O'Connell Gerald T C/O CBOE HOLDINGS, INC. 400 SOUTH LASALLE STREET CHICAGO IL 60605 0 1 0 0 Executive VP and CIO Common Stock 2017-02-15 4 A 0 8371 0 A 65560 D Common Stock 2017-02-16 4 F 0 2641 80.16 D 62919 D Represents shares of the Issuer's common stock issued to the Reporting Person pursuant to the vesting of the restricted stock unit awards - performance based ("PSUs") that were awarded to the Reporting Person on February 19, 2014. The issuance was based on the level of achievement by the Issuer of certain pre-established performance metrics for the performance period January 1, 2014 to December 31, 2016 as certified by the Compensation Committee on February 15, 2017. Represents shares of the Issuer's common stock withheld to satisfy the Issuer's tax withholding obligation upon the vesting of PSUs and the issuance of the underlying shares of the Issuer's common stock. /s/ Patrick Sexton, attorney-in-fact 2017-02-17