X0306 5 2016-12-31 0 0 0 0001156375 CME GROUP INC. CME 0001212852 SHEPARD WILLIAM R 20 S. WACKER DR CHICAGO IL 60606 1 0 0 0 Common Stock Class A 2012-09-28 5 J 0 116.22 53.19 A 52340.4 D Common Stock Class A 2010-12-28 5 J 0 95.05 65.31 A 52435.45 D Common Stock Class A 2011-03-28 5 J 0 128.19 59.16 A 52563.64 D Common Stock Class A 2011-06-28 5 J 0 134.3 56.74 A 52697.95 D Common Stock Class A 2011-09-27 5 J 0 142.06 53.9 A 52840.01 D Common Stock Class A 2011-12-31 5 J 0 158.23 48.65 A 52998.24 D Common Stock Class A 2012-03-26 5 J 0 207.96 59.3 A 53206.2 D Common Stock Class A 2012-06-26 5 J 0 231.5 53.67 A 53437.7 D Common Stock Class A 2012-09-26 5 J 0 222.29 56.86 A 53659.99 D Common Stock Class A 2012-12-27 5 J 0 252.99 50.36 A 53912.98 D Common Stock Class A 2013-03-26 5 J 0 209.19 61.44 A 54122.17 D Common Stock Class A 2013-06-26 5 J 0 169.78 76.26 A 54291.96 D Common Stock Class A 2013-09-30 5 J 0 173.55 75.04 A 54465.51 D Common Stock Class A 2013-12-27 5 J 0 164.12 79.83 A 54629.63 D Common Stock Class A 2014-03-26 5 J 0 180.47 76.25 A 54810.1 D Common Stock Class A 2014-06-26 5 J 0 197.96 69.65 A 55008.06 D Common Stock Class A 2014-09-26 5 J 0 175.43 79.46 A 55183.49 D Common Stock Class A 2014-12-29 5 J 0 155.2 90.34 A 55338.69 D Common Stock Class A 136623 I by Trust Common Stock Class B1 5 I by Trust Common Stock Class B2 5 I by Trust Common Stock Class B3 2 I by Trust Common Stock Class B4 1 I by Trust This Form 5 is being filed to correct the number of shares of CME Group Class A common stock beneficially held by Mr. Shepard. Mr. Shepard acquired a total of 3,114.51 shares of CME Group Class A common stock under a broker directed dividend reinvestment plan (DRIP) on a quarterly basis from 9/28/2010 through 12/29/2014. His total direct ownership, including 3,114.51 shares, is 55,338.69. Adjusted to account for a subsequent 5 to 1 stock split to reflect current ownership and cost. Ownership has been updated to reflect the transfer of 136,623 shares of CME Group Class A common stock to Mr. Shepard's trust on December 9, 2016. by: Margaret Austin Wright for William R. Shepard 2017-02-14