SC 13D/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 15)1

Wausau Paper Corp.

(Name of Issuer)

Common Stock, no par value

(Title of Class of Securities)

943315101

(CUSIP Number)

JEFFREY C. SMITH

STARBOARD VALUE LP

777 Third Avenue, 18th Floor

New York, New York 10017

(212) 845-7977

STEVEN WOLOSKY, ESQ.

OLSHAN FROME WOLOSKY LLP

Park Avenue Tower

65 East 55th Street

New York, New York 10022

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

October 12, 2015

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ¨.

Note:  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See § 240.13d-7 for other parties to whom copies are to be sent.

_______________

1              The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 7,500,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,500,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON PN

2

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION CAYMAN ISLANDS
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 4,713,392
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 4,713,392
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,713,392
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.4%
14	TYPE OF REPORTING PERSON CO

3

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE AND OPPORTUNITY S LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 1,154,496
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 1,154,496
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,154,496
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.3%
14	TYPE OF REPORTING PERSON OO

4

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE AND OPPORTUNITY C LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS WC
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 200,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 200,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 200,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Less than 1%
14	TYPE OF REPORTING PERSON PN

5

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE R LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 200,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 200,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 200,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Less than 1%
14	TYPE OF REPORTING PERSON PN

6

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE R GP LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 200,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 200,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 200,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) Less than 1%
14	TYPE OF REPORTING PERSON OO

7

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD VALUE GP LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 7,500,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,500,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON OO

8

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD PRINCIPAL CO LP
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 7,500,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,500,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON PN

9

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON STARBOARD PRINCIPAL CO GP LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER 7,500,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,500,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON OO

10

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON JEFFREY C. SMITH
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 7,500,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 7,500,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON IN

11

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON MARK R. MITCHELL
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 7,500,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 7,500,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON IN

12

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON PETER A. FELD
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER 7,500,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 7,500,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,500,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 15.0%
14	TYPE OF REPORTING PERSON IN

13

CUSIP NO. 943315101

1	NAME OF REPORTING PERSON GAVIN T. MOLINELLI
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) o   (b) o
3	SEC USE ONLY
4	SOURCE OF FUNDS
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)		¨
6	CITIZENSHIP OR PLACE OF ORGANIZATION USA
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH	7	SOLE VOTING POWER - 0 -
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON - 0 -
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
14	TYPE OF REPORTING PERSON IN

14

CUSIP NO. 943315101

The following constitutes Amendment No. 15 to the Schedule 13D filed by the undersigned (“Amendment No. 15”).  This Amendment No. 15 amends the Schedule 13D as specifically set forth herein.

Item 2. Identity and Background.

Item 2(b) is hereby amended and restated as follows:

(b)           The address of the principal office of each of Starboard S LLC, Starboard C LP, Starboard R LP, Starboard R GP, Starboard Value LP, Starboard Value GP, Principal Co, Principal GP, and Messrs. Smith, Mitchell, Feld and Molinelli is 777 Third Avenue, 18th Floor, New York, New York 10017.  The address of the principal office of Starboard V&O Fund is 89 Nexus Way, Camana Bay, PO Box 31106, Grand Cayman KY1-1205, Cayman Islands.  The officers and directors of Starboard V&O Fund and their principal occupations and business addresses are set forth on Schedule A to the Schedule 13D and are incorporated by reference in this Item 2.

Item 4. Purpose of Transaction.

Item 4 is hereby amended to add the following: 

On October 12, 2015, each of (i) Starboard Value LP and certain of its affiliates (collectively, “Starboard”) and (ii) Gavin Molinelli, a director of the Issuer ("Mr. Molinelli"), entered into voting agreements (the “Voting Agreements”) with SCA Americas Inc., a Delaware corporation (“Parent”), in connection with that certain Agreement and Plan of Merger (the “Merger Agreement”), dated October 12, 2015, by and among the Issuer,  Parent, and Salmon Acquisition, Inc., a Wisconsin corporation (“Merger Sub”) and wholly owned subsidiary of Parent, pursuant to which, Merger Sub will merge with and into the Issuer (the “Merger”), with the Issuer as the surviving entity.

Pursuant to the Voting Agreements, each of Starboard and Mr. Molinelli agreed, among other things, to vote all of the Shares and Options (as defined therein), beneficially owned by each of Starboard and Mr. Molinelli, respectively, in favor of the adoption of the Merger Agreement, the Merger and the other transactions contemplated by the Merger Agreement, on the terms and subject to the conditions set forth in each such Voting Agreement. Each Voting Agreement, subject to certain limitations, will terminate upon the earlier of (i) the effective time of the Merger, (ii) the date on which the Merger Agreement is terminated in accordance with its terms and (iii) the date of any amendment to the Merger Agreement reducing the amount or changing the form of the Merger Consideration (as defined in the Merger Agreement). The foregoing description of the Voting Agreements is qualified in its entirety by reference to the Voting Agreements, which are attached hereto as Exhibits 99.1 and 99.2 and are incorporated herein by reference. 

Item 5. Interest in Securities of the Issuer.

Items 5(a)-(c) are hereby amended and restated to read as follows:

The aggregate percentage of Shares reported owned by each person named herein is based upon 50,082,108 Shares outstanding, as of October 8, 2015, which is the total number of Shares outstanding as reported in the Merger Agreement filed as an exhibit to the Issuer’s Form 8-K filed with the Securities and Exchange Commission on October 13, 2015.

15

CUSIP NO. 943315101

A. Starboard V&O Fund

(a) As of the close of business on October 14, 2015, Starboard V&O Fund beneficially owned 4,713,392 Shares.

Percentage: Approximately 9.4%.

(b) 1. Sole power to vote or direct vote: 4,713,392

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 4,713,392

4. Shared power to dispose or direct the disposition: 0

(c) Starboard V&O Fund has not entered into any transactions in the Shares during the past sixty days.

B. Starboard S LLC

(a) As of the close of business on October 14, 2015, Starboard S LLC beneficially owned 1,154,496 Shares.

Percentage: Approximately 2.3%.

(b) 1. Sole power to vote or direct vote: 1,154,496

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 1,154,496

4. Shared power to dispose or direct the disposition: 0

(c) Starboard S LLC has not entered into any transactions in the Shares during the past sixty days.

C. Starboard C LP

(a) As of the close of business on October 14, 2015, Starboard C LP beneficially owned 200,000 Shares.

Percentage: Less than 1%.

(b) 1. Sole power to vote or direct vote: 200,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 200,000

4. Shared power to dispose or direct the disposition: 0

(c) Starboard C LP has not entered into any transactions in the Shares during the past sixty days.

16

CUSIP NO. 943315101

D. Starboard R LP

(a) Starboard R LP, as the general partner of Starboard C LP, may be deemed the beneficial owner of the 200,000 Shares owned by Starboard C LP.

Percentage: Less than 1%.

(b) 1. Sole power to vote or direct vote: 200,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 200,000

4. Shared power to dispose or direct the disposition: 0

(c) Starboard R LP has not entered into any transactions in the Shares during the past sixty days.

E. Starboard R GP

(a) Starboard R GP, as the general partner of Starboard R LP, may be deemed the beneficial owner of the 200,000 Shares owned by Starboard C LP.

Percentage: Less than 1%.

(b) 1. Sole power to vote or direct vote: 200,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 200,000

4. Shared power to dispose or direct the disposition: 0

(c) Starboard R GP has not entered into any transactions in the Shares during the past sixty days.

F. Starboard Value LP

(a) As of the close of business on October 14, 2015, 1,432,112 Shares were held in the Starboard Value LP Account. Starboard Value LP, as the investment manager of Starboard V&O Fund, Starboard C LP and the Starboard Value LP Account and the manager of Starboard S LLC, may be deemed the beneficial owner of the (i) 4,713,392 Shares owned by Starboard V&O Fund, (ii) 1,154,496 Shares owned by Starboard S LLC, (iii) 200,000 Shares owned by Starboard C LP and (iv) 1,432,112 Shares held in the Starboard Value LP Account.

Percentage: Approximately 15.0%.

(b) 1. Sole power to vote or direct vote: 7,500,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,500,000

4. Shared power to dispose or direct the disposition: 0

(c) Starboard Value LP has not entered into any transactions in the Shares during the past sixty days.

17

CUSIP NO. 943315101

G. Starboard Value GP

(a) Starboard Value GP, as the general partner of Starboard Value LP, may be deemed the beneficial owner of the (i) 4,713,392 Shares owned by Starboard V&O Fund, (ii) 1,154,496 Shares owned by Starboard S LLC, (iii) 200,000 Shares owned by Starboard C LP and (iv) 1,432,112 Shares held in the Starboard Value LP Account.

Percentage: Approximately 15.0%.

(b) 1. Sole power to vote or direct vote: 7,500,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,500,000

4. Shared power to dispose or direct the disposition: 0

(c) Starboard Value GP has not entered into any transactions in the Shares during the past sixty days.

H. Principal Co

(a) Principal Co, as a member of Starboard Value GP, may be deemed the beneficial owner of the (i) 4,713,392 Shares owned by Starboard V&O Fund, (ii) 1,154,496 Shares owned by Starboard S LLC, (iii) 200,000 Shares owned by Starboard C LP and (iv) 1,432,112 Shares held in the Starboard Value LP Account.

Percentage: Approximately 15.0%.

(b) 1. Sole power to vote or direct vote: 7,500,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,500,000

4. Shared power to dispose or direct the disposition: 0

(c) Principal Co has not entered into any transactions in the Shares during the past sixty days.

I. Principal GP

(a) Principal GP, as the general partner of Principal Co, may be deemed the beneficial owner of the (i) 4,713,392 Shares owned by Starboard V&O Fund, (ii) 1,154,496 Shares owned by Starboard S LLC, (iii) 200,000 Shares owned by Starboard C LP and (iv) 1,432,112 Shares held in the Starboard Value LP Account.

Percentage: Approximately 15.0%.

(b) 1. Sole power to vote or direct vote: 7,500,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,500,000

4. Shared power to dispose or direct the disposition: 0

(c) Principal GP has not entered into any transactions in the Shares during the past sixty days.

18

CUSIP NO. 943315101

J. Messrs. Smith, Mitchell and Feld

(a) Each of Messrs. Smith, Mitchell and Feld, as a member of Principal GP and as a member of each of the Management Committee of Starboard Value GP and the Management Committee of Principal GP, may be deemed the beneficial owner of (i) 4,713,392 Shares owned by Starboard V&O Fund, (ii) 1,154,496 Shares owned by Starboard S LLC, (iii) 200,000 Shares owned by Starboard C LP and (iv) 1,432,112 Shares held in the Starboard Value LP Account.

Percentage: Approximately 15.0%.

(b) 1. Sole power to vote or direct vote: 0

2. Shared power to vote or direct vote: 7,500,000

3. Sole power to dispose or direct the disposition: 0

4. Shared power to dispose or direct the disposition: 7,500,000

(c) None of Messrs. Smith, Mitchell or Feld has entered into any transactions in the Shares during the past sixty days.

K. Mr. Molinelli

(a) As of the close of business on October 14, 2015, Mr. Molinelli did not own any Shares.

Percentage: 0%

(b) 1. Sole power to vote or direct vote: 0

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 0

4. Shared power to dispose or direct the disposition: 0

(c) Mr. Molinelli has not entered into any transactions in the Shares during the past sixty days.

Each Reporting Person, as a member of a “group” with the other Reporting Persons for the purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, may be deemed the beneficial owner of the Shares directly owned by the other Reporting Persons.  Each Reporting Person disclaims beneficial ownership of such Shares except to the extent of his, her or its pecuniary interest therein.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

Item 6 is hereby amended to add the following:

On October 12, 2015, each of Starboard and Mr. Molinelli entered into the Voting Agreements with Parent defined and described in Item 4 above and attached as Exhibits 99.1 and 99.2 hereto.

Item 7. Material to be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibits:

99.1 Voting Agreement by and among Starboard Value LP, Starboard Value and Opportunity Master Fund Ltd, Starboard Value and Opportunity S LLC, Starboard Value and Opportunity C LP, Starboard Value GP LLC, Starboard Principal Co LP, Starboard Principal Co GP LLC, Starboard Value R LP, Starboard Value R GP LLC, and SCA Americas Inc., dated October 12, 2015.

99.2 Voting Agreement by and between Gavin Molinelli and SCA Americas Inc., dated October 12, 2015.

19

CUSIP NO. 943315101

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated:  October 14, 2015

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD By: Starboard Value LP,        its investment manager   STARBOARD VALUE AND OPPORTUNITY S LLC By: Starboard Value LP,        its manager   STARBOARD VALUE LP By: Starboard Value GP LLC,        its general partner   STARBOARD VALUE AND OPPORTUNITY C LP By: Starboard Value R LP        its general partner   STARBOARD VALUE R LP By: Starboard Value R GP LLC,        its general partner   STARBOARD VALUE GP LLC By: Starboard Principal Co LP,        its member   STARBOARD PRINCIPAL CO LP By: Starboard Principal Co GP LLC,        its general partner   STARBOARD PRINCIPAL CO GP LLC   STARBOARD VALUE R GP LLC

By:	/s/ Jeffrey C. Smith
	Name:	Jeffrey C. Smith
	Title:	Authorized Signatory

/s/ Jeffrey C. Smith

JEFFREY C. SMITH

Individually and as attorney-in-fact for Mark R. Mitchell and Peter A. Feld

/s/ Gavin T. Molinelli

GAVIN T. MOLINELLI

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EX-99.1

Exhibit 99.1

Voting Agreement

This Voting Agreement (this “Agreement”), dated as of October 12, 2015 is entered into between the undersigned stockholders (each a “Stockholder” and collectively, the “Stockholders”) of WAUSAU PAPER CORP., a Wisconsin corporation (the “Company”), and SCA AMERICAS INC., a Delaware corporation (“Parent”).

WHEREAS, concurrently with the execution and delivery of this Agreement, the Company, Parent and SALMON ACQUISITION, INC., a Wisconsin corporation and wholly owned subsidiary of Parent (“Merger Sub”), have entered into an Agreement and Plan of Merger (as the same may be amended from time to time, the “Merger Agreement”), providing for, among other things, the merger (the “Merger”) of Merger Sub and the Company pursuant to the terms and conditions of the Merger Agreement;

WHEREAS, as a condition to its willingness to enter into the Merger Agreement, Parent has requested that each Stockholder execute and deliver this Agreement; and

WHEREAS, in order to induce Parent to enter into the Merger Agreement, each Stockholder is willing to make certain representations, warranties, covenants and agreements with respect to the shares of common stock, no par value per share, of the Company (“Company Common Stock”) beneficially owned by such Stockholder and set forth below such Stockholder’s name on the signature page hereto (the “Original Shares” and, together with any additional shares of Company Common Stock pursuant to Section 7 hereof, the “Shares”).

NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration, the receipt, sufficiency and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

1.             Definitions.

For purposes of this Agreement, capitalized terms used and not defined herein shall have the respective meanings ascribed to them in the Merger Agreement.

2.             Representations of the Stockholders.

Each stockholder represents and warrants, on a several and not joint basis, to Parent that:

(a)           (i) Such Stockholder owns beneficially (as such term is defined in Rule 13d-3 under the Exchange Act) all of the Original Shares free and clear of all Liens (other than Liens arising pursuant to this Agreement), and (ii) except pursuant hereto, there are no options, warrants or other rights, agreements, arrangements or commitments of any character to which such Stockholder is a party relating to the pledge, disposition or voting of any of the Original Shares and there are no voting trusts or voting agreements with respect to the Original Shares.

(b)           Such Stockholder does not beneficially own any shares of Company Common Stock other than the Original Shares.

(c)           Such Stockholder has full corporate power and authority to enter into, execute and deliver this Agreement and to perform fully such Stockholder’s obligations hereunder (including the proxy described in Section 4(b) below)). This Agreement has been duly and validly executed and delivered by such Stockholder and, assuming due authorization and execution by Parent, constitutes the legal, valid and binding obligation of such Stockholder, enforceable against such Stockholder in accordance with its terms, subject to the effect of any applicable bankruptcy, insolvency (including all Laws relating to fraudulent transfers), reorganization, moratorium or similar Laws affecting creditors’ rights generally and subject to the effect of general principles of equity (regardless of whether considered in a proceeding at law or in equity).

(d)           None of the execution and delivery of this Agreement by such Stockholder, the consummation by such Stockholder of the transactions contemplated hereby or compliance by such Stockholder with any of the provisions hereof will conflict with or result in a breach, or constitute a default (with or without notice of lapse of time or both) under any provision of, any organizational document, trust agreement, loan or credit agreement, note, bond, mortgage, indenture, lease or other agreement, instrument or Law applicable to such Stockholder or to such Stockholder’s property or assets.

(e)           No consent, approval or authorization of, or filing with, any Governmental Authority or other person on the part of such Stockholder is required in connection with the valid execution and delivery of this Agreement, except for filings by Stockholder with the Securities and Exchange Commission.

3.             Representations of Parent. Parent represents and warrants to each of the Stockholders that: (a) Parent has full corporate power and authority to enter into, execute and deliver this Agreement and to perform its obligations hereunder, and (b) this Agreement has been duly and validly executed and delivered by Parent and, assuming due authorization and execution by each Stockholder, constitutes the legal, valid and binding obligation of Parent, enforceable against Parent in accordance with its terms, subject to the effect of any applicable bankruptcy, insolvency (including all Laws relating to fraudulent transfers), reorganization, moratorium or similar Laws affecting creditors’ rights generally and subject to the effect of general principles of equity (regardless of whether considered in a proceeding at law or in equity).

4.             Agreement to Vote Shares; Irrevocable Proxy.

(a)           Each Stockholder agrees during the term of this Agreement to, and to cause any holder of record of the Shares to, vote the Shares at any annual or special meeting of stockholders of the Company, or execute a written consent or consents if stockholders of the Company are requested to vote their shares through the execution of an action by written consent in lieu of any such annual or special meeting of stockholders of the Company: (i) in favor of the Merger and the Merger Agreement, at every meeting (or in connection with any action by written consent) of the stockholders of the Company at which such matters are considered and at every adjournment or postponement thereof; (ii) against (1) any Acquisition Proposal and (2) any action, proposal, transaction or agreement that would reasonably be expected to impede, interfere with, delay, or adversely affect the consummation of the Merger or the fulfillment of Parent’s, the Company’s or Merger Sub’s conditions under the Merger Agreement or change in any manner the voting rights of any class of shares of the Company (including any amendments to the Company Charter or Company Bylaws).

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(b)           Each Stockholder hereby appoints during the term of this Agreement Parent and any designee of Parent, and each of them individually, its proxies and attorneys-in-fact, with full power of substitution and resubstitution, to vote or act by written consent during the term of this Agreement with respect to the Shares in accordance with Section 4(a). This proxy and power of attorney is given to secure the performance of the duties of each Stockholder under this Agreement. Each Stockholder shall take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy. This proxy and power of attorney granted by each Stockholder shall be irrevocable during the term of this Agreement, shall be deemed to be coupled with an interest sufficient in law to support an irrevocable proxy and shall revoke any and all prior proxies granted by such Stockholder with respect to the Shares. The power of attorney granted by each Stockholder herein is a durable power of attorney and shall survive the dissolution, bankruptcy, death or incapacity of such Stockholder. The proxy and power of attorney granted hereunder shall terminate upon the termination of this Agreement.

(c)           Each Stockholder shall retain, at all times, the right to vote the Shares in its sole discretion and without any other limitation on those matters, other than those set forth in this Section 4, that are at any time or from time to time presented for consideration to the stockholders of the Company, generally.

5.             No Voting Trusts or Other Arrangement.

Each Stockholder agrees that it will not, and will not permit any entity under such Stockholder’s control to, deposit any of the Shares in a voting trust, grant any proxies with respect to the Shares or subject any of the Shares to any arrangement with respect to the voting of the Shares other than agreements entered into with Parent.

6.             Transfer and Encumbrance.

Each Stockholder agrees that during the term of this Agreement, it will not, directly or indirectly, transfer, sell, offer, exchange, assign, pledge or otherwise dispose of or encumber (“Transfer”) any of the Shares or enter into any contract, option or other agreement with respect to, or consent to, a Transfer of, any of the Shares or such Stockholder’s voting or economic interest therein. Any attempted Transfer of Shares or any interest therein in violation of this Section 6 shall be null and void. This Section 6 shall not prohibit a Transfer of the Shares by any of the Stockholders to an Affiliate of such Stockholder; provided, that a Transfer referred to in this sentence shall be permitted only if, as a precondition to such Transfer, the transferee agrees in a writing, reasonably satisfactory in form and substance to Parent, to be bound by all of the terms of this Agreement.

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7.             Additional Shares.

Each Stockholder agrees that all shares of Company Common Stock that such Stockholder purchases, acquires the right to vote or otherwise acquires beneficial ownership (as defined in Rule 13d-3 under the Exchange Act) of after the execution of this Agreement shall be subject to the terms of this Agreement and shall constitute Shares for all purposes of this Agreement.

8.             Termination.

This Agreement, and all obligations, terms and conditions contained herein, shall automatically terminate without any further action required by any person upon the earliest to occur of (i) the Effective Time, (ii) the date on which the Merger Agreement is terminated in accordance with its terms and (iii) the date of any amendment, modification, change or waiver to any provision of the Merger Agreement that reduces the amount per Share or changes the form of the Merger Consideration (subject to adjustment in accordance with the terms of the Merger Agreement); provided that this Section 8 and Sections 11,12, 13 and 14 shall survive any termination of this Agreement.  No such termination shall relieve any party hereto from any liability for any breach of this Agreement occurring prior to such termination.

9.             No Agreement as Director or Officer.

None of the Stockholders make an agreement or understanding in this Agreement in such Stockholder’s capacity as a director or officer of the Company or any of its subsidiaries (if such Stockholder holds such office), and nothing in this Agreement: (a) will limit or affect any actions or omissions taken by such Stockholder in stockholder’s capacity as such a director or officer, including in exercising rights under the Merger Agreement, and no such actions or omissions shall be deemed a breach of this Agreement or (b) will be construed to prohibit, limit or restrict such Stockholder from exercising such Stockholder’s fiduciary duties as an officer or director to the Company or its stockholders.  Parent shall not assert any claim that any action taken by any of the Stockholders or any of their respective Affiliates in its capacity as a director of the Company violates any provision of this Agreement.

10.           Specific Performance.

Each party hereto acknowledges and agrees that irreparable damage would occur in the event that to the other party if a party hereto fails to comply with any of the obligations imposed by this Agreement, that every such obligation is material and that, in the event of any such failure, the other party will not have an adequate remedy at law or damages. Accordingly, each party hereto agrees that injunctive relief or other equitable remedy, in addition to remedies at law or damages, is the appropriate remedy for any such failure and will not oppose the seeking of such relief on the basis that the other party has an adequate remedy at law. Each party hereto agrees that it will not seek, and agrees to waive any requirement for, the securing or posting of a bond in connection with the other party’s seeking or obtaining such equitable relief.

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11.           Entire Agreement; Amendment; Waiver.

This Agreement supersedes all prior agreements, written or oral, between the parties hereto with respect to the subject matter hereof and contains the entire agreement between the parties with respect to the subject matter hereof. This Agreement may not be amended or supplemented, and no provisions hereof may be modified or waived, except by an instrument in writing signed by both of the parties hereto. No waiver of any provisions hereof by either party shall be deemed a waiver of any other provisions hereof by such party, nor shall any such waiver be deemed a continuing waiver of any provision hereof by such party.

12.           Notices.

All notices, requests, claims, demands, and other communications hereunder shall be in writing and shall be deemed to have been given (a) when delivered by hand (with written confirmation of receipt), (b) when received by the addressee if sent by a nationally recognized overnight courier (receipt requested), (c) on the date sent by facsimile or e-mail of a PDF document (with confirmation of transmission) if sent during normal business hours of the recipient, and on the next Business Day if sent after normal business hours of the recipient, or (d) on the third day after the date mailed, by certified or registered mail, return receipt requested, postage prepaid.  Such communications must be sent to the respective parties at the following addresses (or at such other address for a party as shall be specified in a notice given in accordance with this Section 12):

If to Parent:

SCA Americas Inc.
2929 Arch Street, Suite 2600
Philadelphia, PA  19104
Attention:  Kevin S. Gorman, Vice President & General Counsel
Facsimile:  (610) 499-3452
Email:  Kevin.Gorman@sca.com
with a copy (which shall not constitute notice) to:
Morgan, Lewis & Bockius
1701 Market Street
Philadelphia, PA
Attention:	Michael A. Conza Andrew R. Mariniello
Facsimile:	(215)-963-5001
Email:	mike.conza@morganlewis.com amariniello@morganlewis.com

If to a Stockholder, to the address or facsimile number set forth for Stockholder on the signature page hereof.

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With a copy (which shall not constitute notice) to:

Olshan Frome Wolosky LLP
Park Avenue Tower 65 East 55th Street New York, New York 10022
Attention:	Steven Wolosky, Esq. Adam M. Freedman, Esq.
Facsimile:	(212) 451-2222
Email:	swolosky@olshanlaw.com afreedman@olshanlaw.com

With an additional copy (which shall not constitute notice) to:

Ruder Ware, L.L.S.C.
500 North First Street, Suite 8000 P.O. Box 8050 Wausau, WI 54402-8050
Attention:	Matthew D. Rowe
Facsimile:	(715) 845-2718
Email:	mrowe@ruderware.com

and

Shearman & Sterling LLP
599 Lexington Avenue New York, NY 10022
Attention:	Creighton O’M. Condon   Scott Petepiece   David Connolly
Facsimile:	(212) 848-7179
Email:	ccondon@shearman.com spetepiece@shearman.com david.connolly@shearman.com

13.           Parties in Interest.  This Agreement shall be binding upon and inure solely to the benefit of each party hereto and its permitted successors and assigns, and nothing in this Agreement, express or implied, is intended to or shall confer upon any other Person any right, benefit or remedy of any nature whatsoever under or by reason of this Agreement.

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14.           Miscellaneous.

(a)          This Agreement shall be governed by and construed in accordance with the Laws of the State of Delaware without regard to the principles of conflicts of law that would cause the application of law of any jurisdiction other than those of the State of Delaware, except to the extent that the Business Corporation Law of the State of Wisconsin mandatorily applies and governs the Merger.

(b)          The parties hereto agree that any Action seeking to enforce any provision of, or based on any matter arising out of or in connection with, this Agreement or the transactions contemplated hereby (whether brought by any party or any of its Affiliates or against any party or any of its Affiliates) shall be heard and determined exclusively in the Court of Chancery of the State of Delaware; provided, however, that if such court does not have jurisdiction over such Action, such Action shall be heard and determined exclusively in any federal or state court located in the State of Delaware.  Consistent with the preceding sentence, each of the parties hereto hereby (i) submits to the exclusive jurisdiction of any federal or state court sitting in the State of Delaware for the purpose of any Action arising out of or relating to this Agreement brought by either party hereto; (ii) agrees that service of process will be validly effected by sending notice in accordance in Section 12 or in such other manner as may be permitted by applicable Laws; and (iii) irrevocably waive, and agree not to assert by way of motion, defense, or otherwise, in any such Action, any claim that it is not subject personally to the jurisdiction of the above-named courts, that its property is exempt or immune from attachment or execution, that the Action is brought in an inconvenient forum, that the venue of the Action is improper, or that this Agreement or the transactions contemplated by this Agreement may not be enforced in or by any of the above named courts.

(c)           EACH OF THE PARTIES HERETO HEREBY WAIVES TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH RESPECT TO ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT.  EACH OF THE PARTIES HERETO HEREBY (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF THE OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (B) SUCH PARTY HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (C) SUCH PARTY MAKES THIS WAIVER VOLUNTARILY, AND (D) ACKNOWLEDGES THAT IT HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT AND THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT, AS APPLICABLE, BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS Section 14(c).

(d)          If any term or provision of this Agreement is invalid, illegal or unenforceable in any jurisdiction, such invalidity, illegality or unenforceability shall not affect any other term or provision of this Agreement or invalidate or render unenforceable such term or provision in any other jurisdiction. Upon such determination that any term or other provision is invalid, illegal or unenforceable, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in a mutually acceptable manner in order that the transactions contemplated hereby be consummated as originally contemplated to the greatest extent possible.

(e)           This Agreement may be executed and delivered (including by facsimile transmission or other means of electronic transmission, such as by electronic mail in “pdf” form) in counterparts, and by the different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original but all of which taken together shall constitute one and the same agreement.

(f)           Each party hereto shall execute and deliver such additional documents as may be reasonably requested by the other party to effect the transactions contemplated by this Agreement.

(g)          All Section headings herein are for convenience of reference only and are not part of this Agreement, and no construction or reference shall be derived therefrom.

(h)          The obligations of each Stockholder set forth in this Agreement shall not be effective or binding upon such Stockholder until such time as the Merger Agreement is executed and delivered by the Company, Parent and Merger Sub.  The parties agree that there is not and has not been any other agreement, arrangement or understanding between the parties hereto with respect to the matters set forth herein.

(i)           Neither party to this Agreement may assign any of its rights or obligations under this Agreement without the prior written consent of the other party hereto, except that Parent may assign, in its sole discretion, all or any of its rights, interests and obligations hereunder to any of its Affiliates. Any assignment contrary to the provisions of this Section 14(i) shall be null and void.

[SIGNATURE PAGE FOLLOWS]

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IN WITNESS WHEREOF, the parties hereto have executed and delivered this Agreement as of the date first written above.

SCA AMERICAS INC.
By:	/s/ Donald E. Lewis
Name: Donald E. Lewis
Title: President
By:	/s/ Kevin S. Gorman
Name: Kevin S. Gorman
Title: Vice President

[Voting Agreement Signature Page (Starboard)]

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD By: Starboard Value LP,        its investment manager Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 4,713,392	STARBOARD VALUE GP LLC By: Starboard Principal Co LP,        its member Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 7,500,000
STARBOARD VALUE AND OPPORTUNITY S LLC By: Starboard Value LP,        its manager Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 1,154,496	STARBOARD PRINCIPAL CO LP By: Starboard Principal Co GP LLC,        its general partner Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 7,500,000
STARBOARD VALUE LP By: Starboard Value GP LLC,        its general partner Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 7,500,000	STARBOARD PRINCIPAL CO GP LLC Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 7,500,000
STARBOARD VALUE AND OPPORTUNITY C LP By: Starboard Value R LP,        its general partner Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 200,000	STARBOARD VALUE R GP LLC Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 200,000

STARBOARD VALUE R LP By: Starboard Value R GP LLC,        its general partner   Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement: 200,000 By: /s/ Peter A. Feld                                                                    Name:  Peter A. Feld Title:  Authorized Signatory   Street Address:  777 Third Avenue, 18th Floor City/State/Zip Code:  New York, NY 10017 Fax:  (212) 845-7989

[Voting Agreement Signature Page (Starboard)]

EX-99.2

Exhibit 99.2

Voting Agreement

This Voting Agreement (this “Agreement”), dated as of October 12, 2015, is entered into between the undersigned stockholder (“Stockholder”) of WAUSAU PAPER CORP., a Wisconsin corporation (the “Company”), and SCA AMERICAS INC., a Delaware corporation (“Parent”).

WHEREAS, concurrently with the execution and delivery of this Agreement, the Company, Parent and SALMON ACQUISITION, INC., a Wisconsin corporation and wholly owned subsidiary of Parent (“Merger Sub”), have entered into an Agreement and Plan of Merger (as the same may be amended from time to time, the “Merger Agreement”), providing for, among other things, the merger (the “Merger”) of Merger Sub and the Company pursuant to the terms and conditions of the Merger Agreement;

WHEREAS, as a condition to its willingness to enter into the Merger Agreement, Parent has requested that Stockholder execute and deliver this Agreement; and

WHEREAS, in order to induce Parent to enter into the Merger Agreement, Stockholder is willing to make certain representations, warranties, covenants and agreements with respect to the shares of common stock, no par value per share, of the Company (“Company Common Stock”) beneficially owned by Stockholder and set forth below Stockholder’s signature on the signature page hereto (the “Original Shares” and, together with any additional shares of Company Common Stock pursuant to Section 7 hereof, the “Shares”).

NOW, THEREFORE, in consideration of the premises and for other good and valuable consideration, the receipt, sufficiency and adequacy of which are hereby acknowledged, the parties hereto agree as follows:

1.            Definitions.

For purposes of this Agreement, capitalized terms used and not defined herein shall have the respective meanings ascribed to them in the Merger Agreement.

2.            Representations of Stockholder.

Stockholder represents and warrants to Parent that:

(a)           (i) Stockholder owns beneficially (as such term is defined in Rule 13d-3 under the Exchange Act) all of the Original Shares free and clear of all Liens (other than Liens arising pursuant to this Agreement), and (ii) except pursuant hereto, there are no options, warrants or other rights, agreements, arrangements or commitments of any character to which Stockholder is a party relating to the pledge, disposition or voting of any of the Original Shares and there are no voting trusts or voting agreements with respect to the Original Shares.

(b)           Stockholder does not beneficially own any shares of Company Common Stock other than (i) the Original Shares and (ii) any options, warrants or other rights to acquire any additional shares of Company Common Stock or any security exercisable for or convertible into shares of Company Common Stock, set forth on the signature page of this Agreement (collectively, “Options”).

(c)           Stockholder has full power and authority and legal capacity to enter into, execute and deliver this Agreement and to perform fully Stockholder’s obligations hereunder (including the proxy described in Section 4(b) below)). This Agreement has been duly and validly executed and delivered by Stockholder and, assuming due authorization and execution by Parent, constitutes the legal, valid and binding obligation of Stockholder, enforceable against Stockholder in accordance with its terms, subject to the effect of any applicable bankruptcy, insolvency (including all Laws relating to fraudulent transfers), reorganization, moratorium or similar Laws affecting creditors’ rights generally and subject to the effect of general principles of equity (regardless of whether considered in a proceeding at law or in equity).

(d)           None of the execution and delivery of this Agreement by Stockholder, the consummation by Stockholder of the transactions contemplated hereby or compliance by Stockholder with any of the provisions hereof will conflict with or result in a breach, or constitute a default (with or without notice of lapse of time or both) under any provision of, any trust agreement, loan or credit agreement, note, bond, mortgage, indenture, lease or other agreement, instrument or Law applicable to Stockholder or to Stockholder’s property or assets.

(e)           No consent, approval or authorization of, or filing with, any Governmental Authority or other person on the part of Stockholder is required in connection with the valid execution and delivery of this Agreement, except for filings by Stockholder with the Securities and Exchange Commission. No consent of Stockholder’s spouse is necessary under any “community property” or other laws in order for Stockholder to enter into and perform its obligations under this Agreement.

3.             Representations of Parent. Parent represents and warrants to Stockholder that: (a) Parent has full corporate power and authority to enter into, execute and deliver this Agreement and to perform its obligations hereunder, and (b) this Agreement has been duly and validly executed and delivered by Parent and, assuming due authorization and execution by Stockholder, constitutes the legal, valid and binding obligation of Parent, enforceable against Parent in accordance with its terms, subject to the effect of any applicable bankruptcy, insolvency (including all Laws relating to fraudulent transfers), reorganization, moratorium or similar Laws affecting creditors’ rights generally and subject to the effect of general principles of equity (regardless of whether considered in a proceeding at law or in equity).

4.             Agreement to Vote Shares; Irrevocable Proxy.

(a)           Stockholder agrees during the term of this Agreement to, and to cause any holder of record of the Shares to, vote the Shares at any annual or special meeting of stockholders of the Company, or execute a written consent or consents if stockholders of the Company are requested to vote their shares through the execution of an action by written consent in lieu of any such annual or special meeting of stockholders of the Company: (i) in favor of the Merger and the Merger Agreement, at every meeting (or in connection with any action by written consent) of the stockholders of the Company at which such matters are considered and at every adjournment or postponement thereof; (ii) against (1) any Acquisition Proposal and (2) any action, proposal, transaction or agreement that would reasonably be expected to impede, interfere with, delay, or adversely affect the consummation of the Merger or the fulfillment of Parent’s, the Company’s or Merger Sub’s conditions under the Merger Agreement or change in any manner the voting rights of any class of shares of the Company (including any amendments to the Company Charter or Company Bylaws).

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(b)           Stockholder hereby appoints during the term of this Agreement Parent and any designee of Parent, and each of them individually, its proxies and attorneys-in-fact, with full power of substitution and resubstitution, to vote or act by written consent during the term of this Agreement with respect to the Shares in accordance with Section 4(a). This proxy and power of attorney is given to secure the performance of the duties of Stockholder under this Agreement. Stockholder shall take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy. This proxy and power of attorney granted by Stockholder shall be irrevocable during the term of this Agreement, shall be deemed to be coupled with an interest sufficient in law to support an irrevocable proxy and shall revoke any and all prior proxies granted by Stockholder with respect to the Shares. The power of attorney granted by Stockholder herein is a durable power of attorney and shall survive the dissolution, bankruptcy, death or incapacity of Stockholder. The proxy and power of attorney granted hereunder shall terminate upon the termination of this Agreement.

(c)           Stockholder shall retain, at all times, the right to vote the Shares in its sole discretion and without any other limitation on those matters, other than those set forth in this Section 4, that are at any time or from time to time presented for consideration to the stockholders of the Company, generally.

5.             No Voting Trusts or Other Arrangement.

Stockholder agrees that Stockholder will not, and will not permit any entity under Stockholder’s control to, deposit any of the Shares in a voting trust, grant any proxies with respect to the Shares or subject any of the Shares to any arrangement with respect to the voting of the Shares other than agreements entered into with Parent.

6.            Transfer and Encumbrance.

Stockholder agrees that during the term of this Agreement, Stockholder will not, directly or indirectly, transfer, sell, offer, exchange, assign, pledge or otherwise dispose of or encumber (“Transfer”) any of the Shares or enter into any contract, option or other agreement with respect to, or consent to, a Transfer of, any of the Shares or Stockholder’s voting or economic interest therein. Any attempted Transfer of Shares or any interest therein in violation of this Section 6 shall be null and void. This Section 6 shall not prohibit a Transfer of the Shares by Stockholder to any member of Stockholder’s immediate family, or to a trust for the benefit of Stockholder or any member of Stockholder’s immediate family, or upon the death of Stockholder, to the heirs of Stockholder; provided, that a Transfer referred to in this sentence shall be permitted only if, as a precondition to such Transfer, the transferee agrees in a writing, reasonably satisfactory in form and substance to Parent, to be bound by all of the terms of this Agreement.

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7.            Additional Shares.

Stockholder agrees that all shares of Company Common Stock that Stockholder purchases, acquires the right to vote or otherwise acquires beneficial ownership (as defined in Rule 13d-3 under the Exchange Act) of after the execution of this Agreement shall be subject to the terms of this Agreement and shall constitute Shares for all purposes of this Agreement.

8.            Termination.

This Agreement, and all obligations, terms and conditions contained herein, shall automatically terminate without any further action required by any person upon the earliest to occur of (i) the Effective Time, (ii) the date on which the Merger Agreement is terminated in accordance with its terms and (iii) the date of any amendment, modification, change or waiver to any provision of the Merger Agreement that reduces the amount per Share or changes the form of the Merger Consideration (subject to adjustment in accordance with the terms of the Merger Agreement); provided that this Section 8 and Sections 11,12, 13 and 14 shall survive any termination of this Agreement.  No such termination shall relieve any party hereto from any liability for any breach of this Agreement occurring prior to such termination.

9.            No Agreement as Director or Officer.

Stockholder makes no agreement or understanding in this Agreement in Stockholder’s capacity as a director or officer of the Company or any of its subsidiaries (if Stockholder holds such office), and nothing in this Agreement: (a) will limit or affect any actions or omissions taken by Stockholder in stockholder’s capacity as such a director or officer, including in exercising rights under the Merger Agreement, and no such actions or omissions shall be deemed a breach of this Agreement or (b) will be construed to prohibit, limit or restrict Stockholder from exercising Stockholder’s fiduciary duties as an officer or director to the Company or its stockholders.  Parent shall not assert any claim that any action taken by a Stockholder or any of its Affiliates in its capacity as a director of the Company violates any provision of this Agreement.

10.           Specific Performance.

Each party hereto acknowledges and agrees that irreparable damage would occur in the event that to the other party if a party hereto fails to comply with any of the obligations imposed by this Agreement, that every such obligation is material and that, in the event of any such failure, the other party will not have an adequate remedy at law or damages. Accordingly, each party hereto agrees that injunctive relief or other equitable remedy, in addition to remedies at law or damages, is the appropriate remedy for any such failure and will not oppose the seeking of such relief on the basis that the other party has an adequate remedy at law. Each party hereto agrees that it will not seek, and agrees to waive any requirement for, the securing or posting of a bond in connection with the other party’s seeking or obtaining such equitable relief.

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11.           Entire Agreement; Amendment; Waiver.

This Agreement supersedes all prior agreements, written or oral, between the parties hereto with respect to the subject matter hereof and contains the entire agreement between the parties with respect to the subject matter hereof. This Agreement may not be amended or supplemented, and no provisions hereof may be modified or waived, except by an instrument in writing signed by both of the parties hereto. No waiver of any provisions hereof by either party shall be deemed a waiver of any other provisions hereof by such party, nor shall any such waiver be deemed a continuing waiver of any provision hereof by such party.

12.           Notices.

All notices, requests, claims, demands, and other communications hereunder shall be in writing and shall be deemed to have been given (a) when delivered by hand (with written confirmation of receipt), (b) when received by the addressee if sent by a nationally recognized overnight courier (receipt requested), (c) on the date sent by facsimile or e-mail of a PDF document (with confirmation of transmission) if sent during normal business hours of the recipient, and on the next Business Day if sent after normal business hours of the recipient, or (d) on the third day after the date mailed, by certified or registered mail, return receipt requested, postage prepaid.  Such communications must be sent to the respective parties at the following addresses (or at such other address for a party as shall be specified in a notice given in accordance with this Section 12):

If to Parent:

SCA Americas Inc.
2929 Arch Street, Suite 2600
Philadelphia, PA  19104
Attention:  Kevin S. Gorman, Vice President & General Counsel
Facsimile:  (610) 499-3452
Email:  Kevin.Gorman@sca.com
with a copy (which shall not constitute notice) to:
Morgan, Lewis & Bockius
1701 Market Street
Philadelphia, PA
Attention:	Michael A. Conza Andrew R. Mariniello
Facsimile:	(215)-963-5001
Email:	mike.conza@morganlewis.com amariniello@morganlewis.com

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If to Stockholder, to the address or facsimile number set forth for Stockholder on the signature page hereof.

With a copy (which shall not constitute notice) to:

Olshan Frome Wolosky LLP
Park Avenue Tower 65 East 55th Street New York, New York 10022
Attention:	Steven Wolosky, Esq. Adam M. Freedman, Esq.
Facsimile:	(212) 451-2222
Email:	swolosky@olshanlaw.com afreedman@olshanlaw.com

With an additional copy (which shall not constitute notice) to:

Ruder Ware, L.L.S.C.
500 North First Street, Suite 8000 P.O. Box 8050 Wausau, WI 54402-8050
Attention:	Matthew D. Rowe
Facsimile:	(715) 845-2718
Email:	mrowe@ruderware.com

and

Shearman & Sterling LLP
599 Lexington Avenue New York, NY 10022
Attention:	Creighton O’M. Condon   Scott Petepiece   David Connolly
Facsimile:	(212) 848-7179
Email:	ccondon@shearman.com spetepiece@shearman.com david.connolly@shearman.com

13.           Parties in Interest.  This Agreement shall be binding upon and inure solely to the benefit of each party hereto and its permitted successors and assigns, and nothing in this Agreement, express or implied, is intended to or shall confer upon any other Person any right, benefit or remedy of any nature whatsoever under or by reason of this Agreement.

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14.           Miscellaneous.

(a)           This Agreement shall be governed by and construed in accordance with the Laws of the State of Delaware without regard to the principles of conflicts of law that would cause the application of law of any jurisdiction other than those of the State of Delaware, except to the extent that the Business Corporation Law of the State of Wisconsin mandatorily applies and governs the Merger.

(b)           The parties hereto agree that any Action seeking to enforce any provision of, or based on any matter arising out of or in connection with, this Agreement or the transactions contemplated hereby (whether brought by any party or any of its Affiliates or against any party or any of its Affiliates) shall be heard and determined exclusively in the Court of Chancery of the State of Delaware; provided, however, that if such court does not have jurisdiction over such Action, such Action shall be heard and determined exclusively in any federal or state court located in the State of Delaware.  Consistent with the preceding sentence, each of the parties hereto hereby (i) submits to the exclusive jurisdiction of any federal or state court sitting in the State of Delaware for the purpose of any Action arising out of or relating to this Agreement brought by either party hereto; (ii) agrees that service of process will be validly effected by sending notice in accordance in Section 12 or in such other manner as may be permitted by applicable Laws; and (iii) irrevocably waive, and agree not to assert by way of motion, defense, or otherwise, in any such Action, any claim that it is not subject personally to the jurisdiction of the above-named courts, that its property is exempt or immune from attachment or execution, that the Action is brought in an inconvenient forum, that the venue of the Action is improper, or that this Agreement or the transactions contemplated by this Agreement may not be enforced in or by any of the above named courts.

(c)           EACH OF THE PARTIES HERETO HEREBY WAIVES TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH RESPECT TO ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT.  EACH OF THE PARTIES HERETO HEREBY (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF THE OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (B) SUCH PARTY HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (C) SUCH PARTY MAKES THIS WAIVER VOLUNTARILY, AND (D) ACKNOWLEDGES THAT IT HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT AND THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT, AS APPLICABLE, BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS Section 14(c).

(d)           If any term or provision of this Agreement is invalid, illegal or unenforceable in any jurisdiction, such invalidity, illegality or unenforceability shall not affect any other term or provision of this Agreement or invalidate or render unenforceable such term or provision in any other jurisdiction. Upon such determination that any term or other provision is invalid, illegal or unenforceable, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in a mutually acceptable manner in order that the transactions contemplated hereby be consummated as originally contemplated to the greatest extent possible.

(e)           This Agreement may be executed and delivered (including by facsimile transmission or other means of electronic transmission, such as by electronic mail in “pdf” form) in counterparts, and by the different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original but all of which taken together shall constitute one and the same agreement.

(f)            Each party hereto shall execute and deliver such additional documents as may be reasonably requested by the other party to effect the transactions contemplated by this Agreement.

(g)           All Section headings herein are for convenience of reference only and are not part of this Agreement, and no construction or reference shall be derived therefrom.

(h)           The obligations of Stockholder set forth in this Agreement shall not be effective or binding upon Stockholder until such time as the Merger Agreement is executed and delivered by the Company, Parent and Merger Sub.  The parties agree that there is not and has not been any other agreement, arrangement or understanding between the parties hereto with respect to the matters set forth herein.

(i)           Neither party to this Agreement may assign any of its rights or obligations under this Agreement without the prior written consent of the other party hereto, except that Parent may assign, in its sole discretion, all or any of its rights, interests and obligations hereunder to any of its Affiliates. Any assignment contrary to the provisions of this Section 14(i) shall be null and void.

[SIGNATURE PAGE FOLLOWS]

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IN WITNESS WHEREOF, the parties hereto have executed and delivered this Agreement as of the date first written above.

SCA AMERICAS INC.
By:	/s/ Donald E. Lewis
Name: Donald E. Lewis
Title: President
By:	/s/ Kevin S. Gorman
Name: Kevin S. Gorman
Title: Vice President

[Voting Agreement Signature Page (Molinelli)]

GAVIN T. MOLINELLI

/s/ Gavin T. Molinelli                                    

Number of Shares of Company Common Stock Beneficially Owned as of the Date of this Agreement:

0

Number of Options Beneficially Owned as of the Date of this Agreement:

9,356.6384

Street Address: c/o Starboard Value LP

                          777 Third Avenue, 18th Floor

City/State/Zip Code: New York, NY  10017

Fax: (212) 845-7989

[Voting Agreement Signature Page (Molinelli)]