Clearing House Advisory Notices
To Clearing Member Firms
From CME Clearing
Subject Corporate Events; Zenith National Insurance Corp. (“ZNT”) - Effective Thursday, December 11, 2008
Notice Date 2008-12-10
Notice Number 08-396
Effective Date 2008-12-11
Zenith National Insurance Corp. (“ZNT”) has announced a special cash dividend of $0.40 per ZNT Common Share. The record date is December 15, 2008; payable date is December
29, 2008. The New York Stock Exchange has set December 11, 2008 as the ex-distribution date for this distribution.
                                                                                                        
This corporate action will be coordinated with the Options Clearing Corporation.