sc13da606297103_08302013.htm

CUSIP NO. 88164L100

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 2,846,675
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 2,846,675
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,846,675
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.3%
14	TYPE OF REPORTING PERSON CO

CUSIP NO. 88164L100

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 643,416
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 643,416
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 643,416
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.2%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 88164L100

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 199,875
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 199,875
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 199,875
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

CUSIP NO. 88164L100

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 199,875
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 199,875
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 199,875
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

CUSIP NO. 88164L100

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 199,875
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 199,875
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 199,875
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

CUSIP NO. 88164L100

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 4,700,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 4,700,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON PN

CUSIP NO. 88164L100

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 4,700,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 4,700,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 88164L100

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 4,700,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 4,700,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON PN

CUSIP NO. 88164L100

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 4,700,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 4,700,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 88164L100

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 4,700,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 4,700,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 88164L100

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 4,700,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 4,700,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 88164L100

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 4,700,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 4,700,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,700,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 8.7%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 88164L100

The following constitutes Amendment No. 6 to the Schedule 13D filed by the undersigned (“Amendment No. 6”). This Amendment No. 6 amends the Schedule 13D as specifically set forth herein.

Item 3.

Source and Amount of Funds or Other Consideration.

Item 3 is hereby amended and restated as follows:

The Shares purchased by each of Starboard V&O Fund, Starboard LLC and Starboard C LP and held in the Starboard Value LP Account were purchased with working capital (which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business) in open market purchases, except as otherwise noted, as set forth in Schedule A, which is incorporated by reference herein. The aggregate purchase price of the 2,846,675 Shares beneficially owned by Starboard V&O Fund is approximately $44,531,202, excluding brokerage commissions. The aggregate purchase price of the 643,416 Shares beneficially owned by Starboard LLC is approximately $10,100,383, excluding brokerage commissions. The aggregate purchase price of the 199,875 Shares beneficially owned by Starboard C LP is approximately $3,631,016, excluding brokerage commissions. The aggregate purchase price of the 1,010,034 Shares held in the Starboard Value LP Account is approximately $15,880,057, excluding brokerage commissions.

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 53,889,227 Shares outstanding, as of July 19, 2013, which is the total number of Shares outstanding as reported in the Issuer’s Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 6, 2013.

A.	Starboard V&O Fund

(a)

As of the close of business on September 4, 2013, Starboard V&O Fund beneficially owned 2,846,675 Shares.

Percentage: Approximately 5.3%

(b)

1. Sole power to vote or direct vote: 2,846,675

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 2,846,675

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

(c)

The transactions in the Shares by Starboard V&O Fund since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

B.	Starboard LLC

(a)

As of the close of business on September 4, 2013, Starboard LLC beneficially owned 643,416 Shares.

Percentage: Approximately 1.2%

CUSIP NO. 88164L100

(b)

1. Sole power to vote or direct vote: 643,416

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 643,416

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

(c)

The transactions in the Shares by Starboard LLC since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

C.	Starboard C LP

(a)

As of the close of business on September 4, 2013, Starboard C LP beneficially owned 199,875 Shares.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 199,875

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 199,875

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

(c)

The transactions in the Shares by Starboard C LP since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

D.	Starboard R LP

(a)

Starboard R LP, as the general partner of Starboard C LP, may be deemed the beneficial owner of the 199,875 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 199,875

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 199,875

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

(c)

Starboard R LP has not entered into any transactions in the Shares since the filing of Amendment No. 5. The transactions in the Shares on behalf of Starboard C LP since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

E.	Starboard R GP

(a)

Starboard R GP, as the general partner of Starboard R LP, may be deemed the beneficial owner of the 199,875 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 199,875

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 199,875

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

(c)

Starboard R GP has not entered into any transactions in the Shares since the filing of Amendment No. 5. The transactions in the Shares on behalf of Starboard C LP since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

CUSIP NO. 88164L100

F.	Starboard Value LP

(a)

As of the close of business on September 4, 2013, 1,010,034 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 Account and the manager of Starboard LLC, may be deemed the beneficial owner of the (i) 2,846,675 Shares owned by Starboard V&O Fund, (ii) 643,416 Shares owned by Starboard LLC, (iii) 199,875 Shares owned by Starboard C LP and (iv) 1,010,034 Shares held in the Starboard Value LP Account.

Percentage: Approximately 8.7%

(b)

1. Sole power to vote or direct vote: 4,700,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 4,700,000

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

(c)

The transactions in the Shares by Starboard Value LP through the Starboard Value LP Account and on behalf of each of Starboard V&O Fund, Starboard LLC and Starboard C LP since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

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) 2,846,675 Shares owned by Starboard V&O Fund, (ii) 643,416 Shares owned by Starboard LLC, (iii) 199,875 Shares owned by Starboard C LP and (iv) 1,010,034 Shares held in the Starboard Value LP Account.

Percentage: Approximately 8.7%

(b)

1. Sole power to vote or direct vote: 4,700,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 4,700,000

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

(c)

Starboard Value GP has not entered into any transactions in the Shares since the filing of Amendment No. 5. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard LLC, Starboard C LP and through the Starboard Value LP Account since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

CUSIP NO. 88164L100

H.	Principal Co

(a)

Principal Co, as a member of Starboard Value GP, may be deemed the beneficial owner of the (i) 2,846,675 Shares owned by Starboard V&O Fund, (ii) 643,416 Shares owned by Starboard LLC, (iii) 199,875 Shares owned by Starboard C LP and (iv) 1,010,034 Shares held in the Starboard Value LP Account.

Percentage: Approximately 8.7%

(b)

1. Sole power to vote or direct vote: 4,700,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 4,700,000

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

(c)

Principal Co has not entered into any transactions in the Shares since the filing of Amendment No. 5. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard LLC, Starboard C LP and through the Starboard Value LP Account since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

I.	Principal GP

(a)

Principal GP, as the general partner of Principal Co, may be deemed the beneficial owner of the (i) 2,846,675 Shares owned by Starboard V&O Fund, (ii) 643,416 Shares owned by Starboard LLC, (iii) 199,875 Shares owned by Starboard C LP and (iv) 1,010,034 Shares held in the Starboard Value LP Account.

Percentage: Approximately 8.7%

(b)

1. Sole power to vote or direct vote: 4,700,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 4,700,000

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

(c)

Principal GP has not entered into any transactions in the Shares since the filing of Amendment No. 5. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard LLC, Starboard C LP and through the Starboard Value LP Account since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

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 the (i) 2,846,675 Shares owned by Starboard V&O Fund, (ii) 643,416 Shares owned by Starboard LLC, (iii) 199,875 Shares owned by Starboard C LP and (iv) 1,010,034 Shares held in the Starboard Value LP Account.

Percentage: Approximately 8.7%

(b)

1. Sole power to vote or direct vote: 0

2. Shared power to vote or direct vote: 4,700,000

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

4. Shared power to dispose or direct the disposition: 4,700,000

(c)

None of Messrs. Smith, Mitchell or Feld has entered into any transactions in the Shares since the filing of Amendment No. 5. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard LLC, Starboard C LP and through the Starboard Value LP Account since the filing of Amendment No. 5 are set forth in Schedule A and are incorporated herein by reference.

CUSIP NO. 88164L100

Item 6.

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

Item 6 is hereby amended to add the following:

On August 30, 2013, Starboard Value LP entered into a Purchase Trading Plan Agreement (the “Agreement”) with Credit Suisse Securities (USA) LLC (“CSSU”) for the purpose of establishing a trading plan to effect purchases of Shares of the Issuer in compliance with all applicable laws, including, without limitation, Section 10(b) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, including, but not limited to, Rule 10b5-1.

The Agreement allows for the purchase of up to an aggregate of 650,000 Shares by CSSU on behalf of Starboard Value LP and certain of its affiliates. Shares purchased pursuant to the Agreement may only be purchased in accordance with trading requirements adopted by the Reporting Persons, and there can be no assurance as to how many Shares, if any, will be purchased pursuant to the Agreement or at what price any such Shares will be purchased.

A copy of the Agreement is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 7.

Material to be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibit:

99.1

Purchase Trading Plan Agreement between Starboard Value LP and Credit Suisse Securities (USA) LLC, dated August 30, 2013.

CUSIP NO. 88164L100

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: September 4, 2013

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 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 LP

By: Starboard Value 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

CUSIP NO. 88164L100

SCHEDULE A

Transactions in the Shares Since the filing of Amendment No. 5

Shares of Common Stock

Purchased

Price Per

Share($)

Date of

Purchase

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD

10,211	18.2464	08/27/2013
3,725	18.4597	08/28/2013
13,914	18.5699	08/29/2013

STARBOARD VALUE AND OPPORTUNITY S LLC

2,585	18.2464	08/27/2013
943	18.4597	08/28/2013
3,522	18.5699	08/29/2013

STARBOARD VALUE AND OPPORTUNITY C LP

1,540	18.2464	08/27/2013
562	18.4597	08/28/2013
2,098	18.5699	08/29/2013

STARBOARD VALUE LP

(Through the Starboard Value LP Account)

3,996	18.2464	08/27/2013
1,458	18.4597	08/28/2013
5,446	18.5699	08/29/2013