FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. SEE Instruction 1(b). 1. Name and Address of Reporting Person (Last) Alexander (First) Walter (Middle) (Street) P.O. Box 831 (City) Aurora (State) Illinois (Zip) 60507 2. Issuer Name and Ticker or Trading Symbol (Issuer Name) Wausau-Mosinee Paper Corporation (Ticker or Trading Symbol) WMO 3. I.R.S. or Social Security Number of Reporting Person (Voluntary) (I.D. Number) 328-28-6479 4. Statement for Month/Day/Year (Month/Day) December (Year) 2002 5. If Amendment, Date of Original (Month/Day/Year) (Month/Day) (Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) X X (Director) (Officer, give title below) (10% Owner) (Other, specify below) 7. Individual or Joint/Group Filing (Check Applicable Line) X X Form filed by One Reporting Person Form filed by More than One Reporting Person TABLE I - NON-DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED 5. Amount of 4. Securities Securities 2A. Deemed Acquired (A) Beneficially 2. Trans- Execution 3.Trans- or Disposed Owned 6. Ownership 7. Nature of action Date, if any action of (D) Following Form: Indirect 1.Title of Date(Month/ (Month/Day/ Code (A) or Reported Direct(D) or Beneficial Security Day/Year) Year) Code V Amount (D) Price Transactions(s) Indirect(I) Ownership No 16,212 D Par Value Common Stock TABLE II - DERIVATIVE SECURITIES ACQUIRED, DISPOSED OF, OR BENEFICIALLY OWNED (E.G., puts, calls, warrants, options, convertible securities) 5. Number of Derivative 2. Conversion 3A. Deemed Securities 1. Title or Exercise Execution 4.Trans- Acquired (A) 6. Date Exercisable and of Price of 3. Transaction Date, if any action or Disposed of Expiration Date Derivative Derivative Date (Month/ (Month/Day/ Code (D) (Month/Day/Year) SECURITY SECURITY DAY/YEAR) YEAR) CODE V (A) (D) DATE EXERCISABLE EXPIRATION DATE Common 1 for 1 12/31/02 A V 270.7581 (1) (1) Stock Equivalent Units Common 8.97 10/19/01 9/8/20 Stock (Right to Buy) TABLE II CONTINUED - Derivative Securities Acquired, Disposed of or Beneficially Owned (E.G., puts, calls, warrants, options, convertible securities) 7. Title and Amount of 10. Ownership Underlying Securities 9. Number of Derivative Form of Derivative Amount or 8. Price of Securities Beneficially Securities Number of Derivative Owned Following Beneficially Owned 11. Nature of Indirect TITLE SHARES SECURITY REPORTED TRANSACTION(S) AT END OF MONTH BENEFICIAL OWNERSHIP Common Stock 270.7581 11.08 36,853.7459 D Common Stock 15,000 D Explanation of Responses: (1) Stock equivalent units accrued under the Wausau-Mosinee Paper Corporation Deferred Compensation Plan for Directors; the value of the units is paid in cash at director's termination of service. /S/ SHERRI L. CRAKER 01/03/03 Signature of Reporting Person Date Attorney-In-Fact