sc13da106297117_07122013.htm

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 575,100*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 575,100*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 575,100*
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

_______________

* Includes 457,600 Shares underlying call options.

CUSIP NO. 832248108

1	NAME OF REPORTING PERSON STARBOARD LEADERS CHARLIE 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 950,008*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 950,008*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 950,008*
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

_______________

* Includes 500,000 Shares underlying call options.

CUSIP NO. 832248108

1	NAME OF REPORTING PERSON STARBOARD LEADERS FUND 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 950,008*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 950,008*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 950,008*
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

_______________

* Includes 500,000 Shares underlying call options.

CUSIP NO. 832248108

1	NAME OF REPORTING PERSON STARBOARD VALUE A 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 950,008*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 950,008*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 950,008*
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

_______________

* Includes 500,000 Shares underlying call options.

CUSIP NO. 832248108

1	NAME OF REPORTING PERSON STARBOARD VALUE A 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 950,008*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 950,008*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 950,008*
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

_______________

* Includes 500,000 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,962,300*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON PN

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,962,300*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON OO

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,962,300*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON PN

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 7,962,300*
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON OO

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 7,962,300*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON IN

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 7,962,300*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON IN

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

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 7,962,300*
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 7,962,300*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,962,300*
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.7%
14	TYPE OF REPORTING PERSON IN

_______________

* Includes 6,079,800 Shares underlying call options.

CUSIP NO. 832248108

The following constitutes Amendment No. 1 to the Schedule 13D filed by the undersigned (“Amendment No. 1”).

Item 4.

Purpose of Transaction.

Item 4 is hereby amended to add the following:

In a letter to the Board of Directors of the Issuer dated June 17, 2013, Starboard indicated its intention to fully explore the possibility of whether a piece-by-piece sale of the Issuer’s valuable, yet disparate, operating divisions to interested third parties could yield greater value for shareholders of the Issuer than the proposed $34 per share merger with Shuanghui International Holdings Limited (“Shuanghui”). Starboard has recently engaged certain financial advisors to assist Starboard in identifying and connecting any strategic or financial buyers for the Issuer’s individual business units in an effort to structure and deliver a collective, sum-of the-parts transaction proposal to the Issuer that could qualify as a “superior proposal” under the merger agreement with Shuanghui.

Item 5.

Interest in Securities of the Issuer.

Items 5(a) – 5(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 138,952,618 Shares outstanding, as of June 11, 2013, which is the total number of Shares outstanding as reported in the Issuer’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on June 18, 2013.

A.	Starboard V&O Fund

(a)

As of the close of business on July 11, 2013, Starboard V&O Fund beneficially owned 4,035,217 Shares, including 3,210,500 Shares underlying call options.

Percentage: Approximately 2.9%

(b)

1. Sole power to vote or direct vote: 4,035,217

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 4,035,217

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

(c)

Starboard V&O Fund has not entered into any transactions in the Shares since the filing of the Schedule 13D.

B.	Starboard LLC

(a)

As of the close of business on July 11, 2013, Starboard LLC beneficially owned 884,700 Shares, including 703,900 Shares underlying call options.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 884,700

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 884,700

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

CUSIP NO. 832248108

(c)

Starboard LLC has not entered into any transactions in the Shares since the filing of the Schedule 13D.

C.	Starboard C LP

(a)

As of the close of business on July 11, 2013, Starboard C LP beneficially owned 575,100 Shares, including 457,600 Shares underlying call options.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 575,100

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 575,100

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

(c)

Starboard C LP has not entered into any transactions in the Shares since the filing of the Schedule 13D.

D.	Starboard R LP

(a)

Starboard R LP, as the general partner of Starboard C LP, may be deemed the beneficial owner of the 575,100 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 575,100

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 575,100

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 the Schedule 13D.

E.	Starboard R GP

(a)

Starboard R GP, as the general partner of Starboard R LP, may be deemed the beneficial owner of the 575,100 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 575,100

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 575,100

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 the Schedule 13D.

CUSIP NO. 832248108

F.	Charlie LLC

(a)

As of the close of business on July 11, 2013, Charlie LLC beneficially owned 950,008 Shares, including 500,000 Shares underlying call options.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 950,008

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 950,008

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

(c)

Charlie LLC has not entered into any transactions in the Shares since the filing of the Schedule 13D.

G.	Leaders Fund

(a)

Leaders Fund, as a member of Charlie LLC, may be deemed the beneficial owner of the 950,008 shares owned by Charlie LLC.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 950,008

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 950,008

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

(c)

Leaders Fund has not entered into any transactions in the Shares since the filing of the Schedule 13D.

H.	Starboard A LP

(a)

Starboard A LP, as the general partner of Leaders Fund and the managing member of Charlie LLC, may be deemed the beneficial owner of the 950,008 shares owned by Charlie LLC.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 950,008

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 950,008

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

(c)

Starboard A LP has not entered into any transactions in the Shares since the filing of the Schedule 13D.

I.	Starboard A GP

(a)

Starboard A GP, as the general partner of Starboard A LP, may be deemed the beneficial owner of the 950,008 shares owned by Charlie LLC.

CUSIP NO. 832248108

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 950,008

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 950,008

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

(c)

Starboard A GP has not entered into any transactions in the Shares since the filing of the Schedule 13D.

J.	Starboard Value LP

(a)

As of the close of business on July 11, 2013, 1,517,275 Shares were held in the Starboard Value LP Account, including 1,207,800 Shares underlying call options. Starboard Value LP, as the investment manager of Starboard V&O Fund, Starboard C LP,Charlie LLC and the Starboard Value LP Account and the manager of Starboard LLC, may be deemed the beneficial owner of the (i) 4,035,217 Shares owned by Starboard V&O Fund, (ii) 884,700 Shares owned by Starboard LLC, (iii) 575,100 Shares owned by Starboard C LP, (iv) 950,008 Shares owned by Charlie LLC and (v) 1,517,275 Shares held in the Starboard Value LP Account.

Percentage: Approximately 5.7%

(b)

1. Sole power to vote or direct vote: 7,962,300

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,962,300

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

(c)

Starboard Value LP has not entered into any transactions in the Shares since the filing of the Schedule 13D.

K.	Starboard Value GP

(a)

Starboard Value GP, as the general partner of Starboard Value LP, may be deemed the beneficial owner of the (i) 4,035,217 Shares owned by Starboard V&O Fund, (ii) 884,700 Shares owned by Starboard LLC, (iii) 575,100 Shares owned by Starboard C LP, (iv) 950,008 Shares owned by Charlie LLC and (v) 1,517,275 Shares held in the Starboard Value LP Account.

Percentage: Approximately 5.7%

(b)

1. Sole power to vote or direct vote: 7,962,300

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,962,300

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 the Schedule 13D.

CUSIP NO. 832248108

L.	Principal Co

(a)

Principal Co, as a member of Starboard Value GP, may be deemed the beneficial owner of the (i) 4,035,217 Shares owned by Starboard V&O Fund, (ii) 884,700 Shares owned by Starboard LLC, (iii) 575,100 Shares owned by Starboard C LP, (iv) 950,008 Shares owned by Charlie LLC and (v) 1,517,275 Shares held in the Starboard Value LP Account.

Percentage: Approximately 5.7%

(b)

1. Sole power to vote or direct vote: 7,962,300

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,962,300

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 the Schedule 13D.

M.	Principal GP

(a)

Principal GP, as the general partner of Principal Co, may be deemed the beneficial owner of the (i) 4,035,217 Shares owned by Starboard V&O Fund, (ii) 884,700 Shares owned by Starboard LLC, (iii) 575,100 Shares owned by Starboard C LP, (iv) 950,008 Shares owned by Charlie LLC and (v) 1,517,275 Shares held in the Starboard Value LP Account.

Percentage: Approximately 5.7%

(b)

1. Sole power to vote or direct vote: 7,962,300

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 7,962,300

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 the Schedule 13D.

N.	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) 4,035,217 Shares owned by Starboard V&O Fund, (ii) 884,700 Shares owned by Starboard LLC, (iii) 575,100 Shares owned by Starboard C LP, (iv) 950,008 Shares owned by Charlie LLC and (v) 1,517,275 Shares held in the Starboard Value LP Account.

Percentage: Approximately 5.7%

(b)

1. Sole power to vote or direct vote: 0

2. Shared power to vote or direct vote: 7,962,300

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

4. Shared power to dispose or direct the disposition: 7,962,300

CUSIP NO. 832248108

(c)

None of Messrs. Smith, Mitchell or Feld has entered into any transactions in the Shares since the filing of the Schedule 13D.

Item 6.

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

Item 6 is hereby amended to add the following:

Starboard has entered into a letter agreement with each of Moelis & Company and BDA Advisors Inc. pursuant to which Starboard has agreed to pay each such financial advisor in consideration of their respective services performed a fee based and conditioned upon the appreciation of Starboard’s ownership position in the Issuer above $34 per share over a specified period of time and in accordance with the terms and conditions specified therein.

CUSIP NO. 832248108

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: July 12, 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 LEADERS CHARLIE LLC

By: Starboard Value A LP,

its managing manager

STARBOARD LEADERS FUND LP

By: Starboard Value A LP

its general partner

STARBOARD VALUE A LP

By: Starboard Value A 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 A 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