SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [XXX] Filed by a party other than the Registrant [ ] Check the appropriate box: - -------------------------- [ ] Preliminary Proxy Statement [ ] Confidential, For Use [ ] Definitive Proxy Statement of the Commission Only [ ] Definitive Additional Materials (as permitted by [XXX] Soliciting Material Pursuant Rule 14a-6(e)(2)) to Rule 14a-11(c) or Rule 14a-12 Managers Trust I ---------------- (Name of Registrant as Specified in Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): - -------------------------------------------------- [XXX] No fee required. [ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11. (1) Title of each class of securities to which transaction applies: (2) Aggregate number of securities to which transaction applies: (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): (4) Proposed maximum aggregate value of transaction: (5) Total fee paid: [ ] Fee paid previously with preliminary materials: [ ] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number or the Form or Schedule and the date of its filing. (1) Amount previously paid: (2) Form, Schedule or Registration Statement No.: (3) Filing Party: (4) Date Filed: <Page> MANAGERS TRUST I MANAGERS U.S. STOCK MARKET PLUS FUND Supplement dated March 18, 2003 to the Prospectus and Statement of Additional Information dated August 1, 2002 The following information supersedes any information to the contrary relating to Managers U.S. Stock Market Plus Fund (the "Fund") contained in the Fund's Prospectus and Statement of Additional Information dated August 1, 2002: At a meeting held on March 14, 2003, the Fund's Board of Trustees approved the reorganization of the Fund with First Quadrant Tax-Managed Equity Fund ("FQ Fund"), a series of Managers AMG Funds. Consummation of the reorganization is contingent upon approval by the Fund's shareholders of proposals (the "Proposals") that would replace the Fund's current investment objectives, policies and advisory arrangements with investment objectives, policies and advisory arrangements substantially the same as those of FQ Fund. If Fund shareholders approve the Proposals, the surviving fund, following the reorganization, will operate under investment objectives, policies and advisory arrangements substantially the same as those currently in place for FQ Fund. The Fund will provide a definitive proxy statement to shareholders prior to a special meeting of the Fund to consider the Proposals. Shareholders are urged to read the definitive proxy statement when it becomes available. It will contain important information regarding the Proposals. In light of the proposed reorganization, effective immediately, the Fund will no longer accept investments to open new shareholder accounts. Shareholders may, however, continue to purchase and redeem shares in existing accounts. March 18, 2003 <Page>