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) - May 14, 2003 --------------- PLATINUM UNDERWRITERS HOLDINGS, LTD. (Exact name of registrant as specified in its charter) BERMUDA 001-31341 NOT APPLICABLE (State or other jurisdiction of (Commission File Number) (IRS Employer incorporation or organization) Identification No.) THE BELVEDERE BUILDING, 69 PITTS BAY ROAD, PEMBROKE, BERMUDA HM08 (Address of principal executive offices) (Zip Code) (441) 295-7195 (Registrant's telephone number, including area code) N/A (Former name or address, if changed since last report) Item 7. Financial Statements and Exhibits. (c) Exhibits. Exhibit 99.1 Press release dated May 14, 2003. Item 9. Regulation FD Disclosure. On May 14, 2003 Platinum Underwriters Holdings, Ltd. issued a press release updating its guidance with respect to financial results for fiscal year 2003. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated by reference in this Item 9. 2 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, Platinum Underwriters Holdings, Ltd. has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. PLATINUM UNDERWRITERS HOLDINGS, LTD. By: /s/ William A. Robbie ----------------------------- William A. Robbie Executive Vice President and Chief Financial Officer Date: May 14, 2003 3 Exhibit Index Exhibit Number Description ------ ----------- 99.1 Press release dated May 14, 2003.