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): APRIL 26, 2004 WAUSAU-MOSINEE PAPER CORPORATION (Exact name of registrant as specified in its charter) WISCONSIN 1-13923 39-0690900 (State or other (Commission File (IRS Employer jurisdiction of Number) Identification incorporation) Number) 1244 KRONENWETTER DRIVE MOSINEE, WI 54455-9099 (Address of principal executive offices, including Zip Code) (715) 693-4470 Registrant's telephone number, including area code INFORMATION TO BE INCLUDED IN THE REPORT ITEM 5. OTHER EVENTS AND REGULATION FD DISCLOSURE. On April 26, 2004, the Company reported net earnings of $3.5 million, or $.07 per share, for the first quarter ended March 31, 2004, as compared to a net earnings of $1.3 million, or $.03 per share, for the first quarter of 2003. Net sales for the first quarter of 2004 were $251.8 million. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. (c) Exhibits. 99.1* Press release dated April 26, 2004 * This exhibit is furnished pursuant to Item 12 and shall not be deemed to have been filed by the registrant pursuant to Item 5. ITEM 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION On April 26, 2004, the Company issued a press release announcing its earnings for the first quarter ended March 31, 2004, a copy of which is attached hereto as Exhibit 99.1 and incorporated in this Item 12 by reference. 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. WAUSAU-MOSINEE PAPER CORPORATION Date: April 26, 2004 By: SCOTT P. DOESCHER Scott P. Doescher Senior Vice President-Finance EXHIBIT INDEX TO FORM 8-K OF WAUSAU-MOSINEE PAPER CORPORATION DATED APRIL 26, 2004 Pursuant to Section 102(d) of Regulation S-T (17 C.F.R. Section 232.102(d)) 99.1* PRESS RELEASE DATED APRIL 26, 2004 * This exhibit is furnished pursuant to Item 12 and shall not be deemed to have been filed by the registrant pursuant to Item 5.