Tower Group Announces Merger with ACP Re, Ltd.

Tower Group International, Ltd.

(Tower) announced today that on January 3, 2014 it entered into an Agreement and Plan of Merger (Merger Agreement) with ACP Re Ltd. (ACP Re), and a wholly-owned subsidiary of ACP Re (Merger Sub), pursuant to which, subject to the satisfaction or waiver of the conditions therein, it is expected that Merger Sub will merge with and into Tower, with Tower as the surviving corporation in the merger and a wholly owned subsidiary of ACP Re. The transaction is expected to close by the summer of 2014. ACP Re is a Bermuda based reinsurance company. The controlling shareholder of ACP Re is a trust established by the founder of AmTrust Financial Services, Inc. (AmTrust), National General Holdings Corporation (NGHC) and Maiden