Diamond Offshore Drilling, Inc. (DO) has announced a Special Cash Dividend of $1.375
per DO Common Share. The record date is May 3, 2010; payable date is on June 1, 2010.
The ex-distribution date for this distribution will be April 29, 2010. Diamond Offshore has
characterized this dividend as special and has distinguished it from the regular quarterly
dividend payable on the same date.
This corporate event will be coordinated with the Options Clearing Corporation.
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