CME GROUP INC. — Director's Dealing 2015

May 5, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CME GROUP INC. (CME)
CIK: 0001156375
Period of Report: 2015-05-05

Reporting Person: Pietrowicz John W. (Sr MD Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-05-05	Common Stock Class A	M	743	$50.39	Acquired	35410	Direct
2015-05-05	Common Stock Class A	S	743	$90.41	Disposed	36153	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-05	Non-Qualified Stock Option (right to buy)	$50.39	M	743	Acquired	2015-06-15	Common Stock Class A (743)	Direct

Footnotes

F1: This sale was completed pursuant to the terms of a pre-arranged trading plan established in accordance with Rule 10b5-1.

F2: As of 6/15/2010, this option vested with respect to 100% of the granted number of shares covered by the option.