CORPORATE EVENTS: Diamond Offshore Drilling, Inc. (“DO”)

Clearing House Advisory Notices

To	Clearing Member Firms
From	CME Clearing
Subject	CORPORATE EVENTS: Diamond Offshore Drilling, Inc. (“DO”)
Notice Date	2008-07-29
Notice Number	08-168
Effective Date	2008-07-30
Diamond Offshore Drilling, Inc. (“DO”) has announced a special cash dividend of $1.25 per DO Common Share. The record date is August 1, 2008; payable date is September 1, 2008. The New York Stock Exchange has set July 30, 2008 as the ex-distribution date for this distribution. This corporate action will be coordinated with the Options Clearing Corporation. For the full text of this advisory...