X0306 4 2017-12-05 0 0001374310 Cboe Global Markets, Inc. CBOE 0001163949 RATTERMAN JOSEPH P C/O CBOE GLOBAL MARKETS, INC. 400 SOUTH LASALLE STREET CHICAGO IL 60605 1 0 0 0 Common Stock 2017-12-05 5 G 0 E 24400 0 D 31058 I See footnote Common Stock 1455 D Shares are held of record by Joseph P. Ratterman and Sandra M. Ratterman, as Trustess of the Joseph P. and Sandra M. Ratterman Trust dated September 15, 2008 or their successors in Trust. Mr. Ratterman disclaims beneficial ownership of the reported securities, except to the extent of his pecuniary interests therein. /s/ Patrick Sexton, attorney-in-fact 2017-12-07