UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
Current Report
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): August 7, 2011
ALLIED WORLD ASSURANCE COMPANY HOLDINGS, AG
(Exact Name of Registrant as Specified in Charter)
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| Switzerland
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001-32938
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98-0681223 |
| (State or Other Jurisdiction
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(Commission File Number)
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(I.R.S. Employer |
| of Incorporation)
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Identification No.) |
Lindenstrasse 8
6340 Baar
Zug, Switzerland
(Address of Principal Executive Offices and Zip Code)
Registrant’s telephone number, including area code: 41-41-768-1080
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the
filing obligation of the registrant under any of the following provisions:
þ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b))
o Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))
Item 8.01. Other Events.
On August 7, 2011, Allied World Assurance Company Holdings, AG (“Allied World”) issued a press
release in response to the August 5, 2011 unsolicited acquisition proposal sent by National
Indemnity Company to Transatlantic Holdings, Inc. (“Transatlantic”). Allied World, GO Sub, LLC and
Transatlantic entered into a previously announced agreement and plan of merger, dated as of June
12, 2011, providing for a merger of equals of Allied World and Transatlantic. A copy of the press
release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.
Item 9.01. Financial Statements and Exhibits.
(d) Exhibits
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| Exhibit |
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Description |
99.1
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Press release, dated August 7, 2011. |
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