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 16,309 D Par 540 I By Spouse Value Common Stock

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

OMB APPROVAL

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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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 $ 9.7393 04/19/96 10/19/15 Stock $17.16 05/17/99 12/17/18 Option $15.88 07/23/99 01/23/19 (Right $ 9.31 10/19/01 10/09/20 to Buy) $10.71* * 12/13/21* $11.39# 12/12/02# A V 18,000# # 12/12/22#

1. Name and Address of Reporting Person* Urbanek, Dennis M.	2. Issuer Name and Ticker or Trading Symbol Wausau-Mosinee Paper Corporation WMO		6. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Vice President-Engineering and Environmental Services
(Last) (First) (Middle) 1505 Pine View Lane	3. I.R.S. Identification Number of Reporting Person, if an entity (voluntary) ###-##-####	4. Statement for Month/Day/Year January 2003
(Street) Wausau, WI 54403-2385		5. If Amendment, Date of Original (Month/Day/Year)	7. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person
(City) (State) (Zip)	Table I — Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

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 No Par 28,000 D Value 50,000 D Common 28,520 D Stock 25,000 D 18,000* D* 18,000# 18,000# D#

1. Title of Security (Instr. 3)	2. Trans- action Date (Month/ Day/ Year)	2A. Deemed Execution Date, if any (Month/Day/ Year)	3. Trans- action Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 & 5)			5. Amount of Securities Beneficially Owned Follow- ing Reported Transactions(s) (Instr. 3 & 4)	6. Owner- ship Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Trans- action Date (Month/ Day/ Year)	2A. Deemed Execution Date, if any (Month/Day/ Year)	Code	V	Amount	(A) or (D)	Price		6. Owner- ship Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
No Par Value Common Stock								16,309	D
No Par Value Common Stock								540	I	By Spouse

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FORM 4 (continued)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security

(Instr. 3)

2. Conver-
sion or
Exercise
Price of Derivative Security

3. Trans-
action Date

(Month/
Day/
Year)

3A. Deemed
Execution
Date,
if any
(Month/
Day/
Year)

4. Trans-
action
Code

(Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)

(Instr. 3, 4 & 5)

6. Date Exercisable
and Expiration
Date
(Month/Day/
Year)

7. Title and Amount of Underlying Securities
(Instr. 3 & 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of
Derivative
Securities
Beneficially
Owned
Following
Reported Transaction(s)
(Instr. 4)

10. Owner-
ship Form
of Deriv-
ative
Security:
Direct (D)
or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date Exer-cisable

Expira-
tion
Date

Title

Amount or Number of
Shares

Common Stock Option (Right to Buy)

$9.7393

04/19/96

10/19/15

No Par Value Common Stock

28,000

Common Stock Option (Right to Buy)

$17.16

05/17/99

12/17/18

No Par Value Common Stock

50,000

Common Stock Option (Right to Buy)

$15.88

07/23/99

01/23/19

No Par Value Common Stock

28,520

Common Stock Option (Right to Buy)

$9.31

10/19/01

10/09/20

No Par Value Common Stock

25,000

Common Stock Option (Right to Buy)

$10.71⁽¹⁾

01/29/03⁽¹⁾

12,000⁽¹⁾

01/29/03⁽¹⁾

12/13/21⁽¹⁾

No Par Value Common Stock

12,000⁽¹⁾

6,000⁽¹⁾

D⁽¹⁾

Common Stock Option (Right to Buy)

$11.39⁽²⁾

⁽²⁾

12/12/22⁽²⁾

No Par Value Common Stock

18,000⁽²⁾

D⁽²⁾

Explanation of Responses:

(1) Number of shares as to which option was exercisable was subject to certain performance criteria. Represents options which lapsed because performance criteria were not met.
(2) Number of shares to which option is exercisable is subject to satisfaction of certain performance criteria. Options are exercisable on date on which audited financial results for the fiscal year ending 12/31/03 are reported by the Company.

By: /s/ Sherri L. Craker, Attorney-in-Fact

**Signature of Reporting Person

01/31/03
Date

**Intentional misstatements or omissions of facts constitute Federal Criminal Violations.
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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If space is insufficient, See Instruction 6 for procedure.

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Filing Compare · URBANEK DENNIS M