SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) September 6, 2002 Trenwick Group Ltd. (Exact Name of Registrant as Specified in its Charter) Bermuda 1-16089 98-0232340 State or Other Jurisdiction (Commission (IRS Employer of Incorporation) File Number) Identification No.) LOM Building, 27 Reid Street Hamilton, HM 11, Bermuda Not Applicable (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code (441) 292-4985 - -------------------------------------------------------------------------------- (Former Name or Former Address, if Changed Since Last Report) Item 5. - Other Events On September 6, 2002 Trenwick Group Ltd. ("Trenwick"), entered into a Settlement Agreement, a Second Amended and Restated Catastrophe Equity Securities Issuance Option Agreement and Amendment No. 1 to Registration Rights Agreement, each dated September 6, 2002, pursuant to which Trenwick and European Reinsurance Company of Zurich ("European Re") agreed to the settlement of the outstanding arbitration between Trenwick and European Re and the purchase by European Re of 550,000 Series B Cumulative Convertible Perpetual Preferred Shares of Trenwick for a purchase price of $40,000,000. On September 6, 2002, Trenwick issued a press release announcing the transaction. A copy of the press release is filed herewith as Exhibit 99.5 and is incorporated by reference herein. Item 7. Financial Statements and Exhibits (c) Exhibits 99.1 Settlement Agreement, dated as of September 6, 2002, between Trenwick Group Ltd. and European Reinsurance Company of Zurich. 99.2 Second Amended and Restated Catastrophe Equity Securities Issuance Option Agreement, dated as of September 6, 2002, between Trenwick Group Ltd. and European Reinsurance Company of Zurich. 99.3 Certificate of Designation, Preferences and Rights of Series B Cumulative Convertible Perpetual Preferred Shares of Trenwick Group Ltd. 99.4 Amendment No. 1 to Registration Rights Agreement, dated as of September 6, 2002, between Trenwick Group Ltd. and European Reinsurance Company of Zurich. 99.5 Press release of Trenwick Group Ltd. issued September 6, 2002. 2 SIGNATURE Pursuant to the Requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. TRENWICK GROUP LTD. By: /s/ W. Marston Becker -------------------------------- W. Marston Becker Acting Chairman and Acting Chief Executive Officer Dated: September 10, 2002 3