CME GROUP INC. — Director's Dealing 2012

Dec 20, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CME GROUP INC. (CME)
CIK: 0001156375
Period of Report: 2012-12-18

Reporting Person: Rich Linda Dallas (Sr MD Govt Rel Legisl Affairs)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-18	Common Stock Class A	S	1593.0	$51.58	Disposed	7114.0	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: In May 2012, CME Group's board of directors declared a five-for-one split of its Class A common stock effected by way of a
stock dividend to its Class A and Class B shareholders. The stock split was effective July 20, 2012 for all shareholders of record
on July 10, 2012. As a result of the stock split, the individual?s beneficial ownership of securities have been adjusted to reflect the stock split.