1 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) June 26, 2001 ------------------------------------- Dime Bancorp, Inc. - -------------------------------------------------------------------------------- (Exact Name of Registrant as Specified in Its Charter) Delaware --------------------------------------------------- (State or Other Jurisdiction of Incorporation) 001-13094 11-3197414 - ------------------------------------ --------------------------------- Commission File Number (IRS Employer Identification No.) 589 Fifth Avenue New York, New York 10017 - ----------------------------------------- ---------------------------- (Address of Principal Executive Offices) (Zip Code) (212) 326-6170 --------------------------------------------------- (Registrant's Telephone Number, Including Area Code) Not Applicable --------------------------------------------------- (Former Name or Former Address, if Changed Since Last Report) 2 ITEM 5. OTHER EVENTS. On June 25, 2001, Dime Bancorp, Inc. a Delaware corporation (the "Dime") and Washington Mutual Corporation ("Washington Mutual") announced that they had entered into an Agreement and Plan of Merger (the "Merger Agreement"), dated as of June 25, 2001. Pursuant to the Merger Agreement, Dime will merge into Washington Mutual, with Washington Mutual as the surviving corporation. ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS. (c) Exhibits: 2.1 Agreement and Plan of Merger, dated June 25, 2001, between Dime Bancorp, Inc. and Washington Mutual, Inc. 99.1 Warrant Purchase and Voting Agreement, dated June 25, 2001, among Warburg, Pincus Equity Partners, L.P., Warburg, Pincus Netherlands Equity Partners I, C.V., Warburg, Pincus Netherlands Equity Partners II, C.V., Warburg, Pincus Netherlands Equity Partners III, C.V. and Washington Mutual, Inc. 99.2 Side Letter Agreement, dated June 25, 2001, among Dime Bancorp, Inc., Warburg, Pincus Equity Partners, L.P., Warburg, Pincus Netherlands Equity Partners I, C.V., Warburg, Pincus Netherlands Equity Partners II, C.V., and Warburg, Pincus Netherlands Equity Partners III, C.V. * * * -2- 3 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized. DIME BANCORP, INC. By: /s/ James E. Kelly ----------------------------------- Name: James E. Kelly Title: Executive Vice President and General Counsel Date: June 26, 2001 -4- 4 INDEX OF EXHIBITS Exhibit No. Exhibit ----------- ------- 2.1 Agreement and Plan of Merger, dated June 25, 2001, between Dime Bancorp, Inc. and Washington Mutual, Inc. 99.1 Warrant Purchase and Voting Agreement, dated June 25, 2001 among Warburg, Pincus Equity Partners, L.P., Warburg, Pincus Netherlands Equity Partners I, C.V., Warburg, Pincus Netherlands Equity Partners II, C.V., Warburg, Pincus Netherlands Equity Partners III, C.V. and Washington Mutual, Inc. 99.2 Side Letter Agreement, dated June 25, 2001 among Dime Bancorp, Inc., Warburg, Pincus Equity Partners, L.P., Warburg, Pincus Netherlands Equity Partners I, C.V., Warburg, Pincus Netherlands Equity Partners II, C.V., and Warburg, Pincus Netherlands Equity Partners III, C.V. -5-