What is the main purpose of this 8-K filing?

The primary purpose of this 8-K filing is to officially submit the opinions of two law firms, Skadden, Arps, Slate, Meagher & Flom LLP and Mayer, Brown, Rowe & Maw LLP, regarding the material federal income tax consequences associated with a special dividend and certain exercise rights. These opinions are being filed as exhibits to CME Holdings' effective Registration Statement on Form S-4 and are incorporated by reference into it.

What does the special dividend and exercise rights refer to?

While the specific details of the special dividend and exercise rights are not fully elaborated within this 8-K itself, it indicates they were described in a supplement to a joint proxy statement/prospectus filed earlier. This suggests a significant corporate action or transaction that CME Group Inc. was undertaking or had undertaken, which required shareholders to be informed about potential tax implications.

Why are legal opinions on tax consequences important for investors?

Legal opinions on tax consequences are crucial for investors because they provide guidance on how a particular corporate action, like a special dividend or the exercise of rights, might affect an investor's tax liability. Understanding these implications helps investors make informed decisions about their investments, manage their tax obligations effectively, and assess the overall financial impact of such corporate events.

Is this filing announcing a new event or providing supporting documentation?

This filing is primarily providing supporting documentation for previously disclosed information. It is not announcing a new event but rather submitting the formal legal opinions concerning tax consequences related to a special dividend and exercise rights, which were part of prior filings, including a joint proxy statement/prospectus and a Form S-4 registration statement.

CME 8-K SEC Disclosure — Jun 20, 2007

Summary

CME Group Inc. (CME) filed a Current Report on Form 8-K on June 20, 2007, primarily to disclose legal opinions concerning tax consequences related to a previously announced special dividend and exercise rights. These opinions, provided by Skadden, Arps, Slate, Meagher & Flom LLP and Mayer, Brown, Rowe & Maw LLP, are significant because they were filed as exhibits to CME Holdings' effective Registration Statement on Form S-4 (File No. 333-143282) and a related supplement to a joint proxy statement/prospectus. The filing also indicates that this information is incorporated by reference into the aforementioned registration statement. This suggests a complex corporate action, likely a significant transaction or restructuring, where clarity on tax implications for shareholders is crucial for informed decision-making and regulatory compliance. Investors should note that this 8-K is not announcing new events but rather providing supporting documentation for prior disclosures related to a special dividend and exercise rights. The inclusion of opinions from two prominent law firms underscores the importance and potential complexity of the tax aspects of this transaction. The fact that these are filed in conjunction with a Form S-4 registration statement and a joint proxy statement/prospectus implies that shareholders were likely voting on or were directly affected by the transaction, and these tax opinions are key to understanding the full financial impact on their holdings.

Key Highlights

1Filing of legal opinions from Skadden, Arps, Slate, Meagher & Flom LLP and Mayer, Brown, Rowe & Maw LLP.
2Opinions address material federal income tax consequences of a special dividend and exercise rights.
3These opinions are filed as exhibits to CME Holdings' Registration Statement on Form S-4.
4The information is incorporated by reference into the Form S-4 registration statement.
5This 8-K serves to supplement disclosures previously made in a joint proxy statement/prospectus.
6The filing date is June 20, 2007, with the earliest event reported as June 18, 2007.

CME GROUP INC. 8-K Report, Corporate Update (Jun 20, 2007)

Summary

Key Highlights

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