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): June 17, 2005 ALLMERICA FINANCIAL CORPORATION ------------------------------- (Exact name of registrant as specified in its charter) Delaware 1-13754 04-3263626 -------------------------- ------------------------ ------------------- (State or other jurisdic- (Commission File Number) (I.R.S. Employer tion of incorporation) Identification No.) 440 Lincoln Street, Worcester, Massachusetts 01653 -------------------------------------------------- (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (508) 855-1000 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: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17CFR 240.13e-4(c)) Item 5.02 Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers. On June 17, 2005, Allmerica Financial Corporation's Board of Directors accepted the resignation of Nancy L. Leaming, effective immediately. Ms. Leaming submitted her resignation in connection with a significant change in her principal job responsibilities. 2 SIGNATURES 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. Allmerica Financial Corporation -------------------------------- (Registrant) Date: June 23, 2005 By: /s/ J. Kendall Huber -------------------- J. Kendall Huber Senior Vice President, General Counsel 3