Edgar Filing: INFOBLOX INC

sc13da106297184_09202016.htm

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. 1)1

Infoblox Inc.

(Name of Issuer)

Common Stock, $0.0001 par value per share

(Title of Class of Securities)

45672H104

(CUSIP Number)

JEFFREY C. SMITH

STARBOARD VALUE LP

777 Third Avenue, 18th Floor

New York, New York 10017

(212) 845-7977

STEVE WOLOSKY, ESQ.

OLSHAN FROME WOLOSKY LLP

1325 Avenue of the Americas

New York, New York 10019

(212) 451-2300

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

September 19, 2016

(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. 45672H104

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 2,800,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 2,800,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON PN

CUSIP NO. 45672H104

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 2,120,887
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 2,120,887
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,120,887
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.77%
14	TYPE OF REPORTING PERSON CO

CUSIP NO. 45672H104

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 253,578
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 253,578
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 253,578
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. 45672H104

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 140,141
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 140,141
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 140,141
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. 45672H104

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 140,141
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 140,141
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 140,141
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. 45672H104

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 140,141
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 140,141
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 140,141
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. 45672H104

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 2,800,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 2,800,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 45672H104

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 2,800,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 2,800,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON PN

CUSIP NO. 45672H104

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 2,800,000
	8	SHARED VOTING POWER - 0 -
	9	SOLE DISPOSITIVE POWER 2,800,000
	10	SHARED DISPOSITIVE POWER - 0 -
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON OO

CUSIP NO. 45672H104

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 2,800,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 2,800,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 45672H104

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 2,800,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 2,800,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 45672H104

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 2,800,000
	9	SOLE DISPOSITIVE POWER - 0 -
	10	SHARED DISPOSITIVE POWER 2,800,000
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,800,000
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES		o
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.98%
14	TYPE OF REPORTING PERSON IN

CUSIP NO. 45672H104

The following constitutes Amendment No. 1 to the Schedule 13D filed by the undersigned (“Amendment No. 1”). This Amendment No. 1 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 to read as follows:

The Shares purchased by each of Starboard V&O Fund, Starboard S 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 2,120,887 Shares beneficially owned by Starboard V&O Fund is approximately $29,839,661, excluding brokerage commissions. The aggregate purchase price of the 253,578 Shares beneficially owned by Starboard S LLC is approximately $3,765,349, excluding brokerage commissions. The aggregate purchase price of the 140,141 Shares beneficially owned by Starboard C LP is approximately $1,971,416, excluding brokerage commissions. The aggregate purchase price of the 285,394 Shares held in the Starboard Value LP Account is approximately $4,234,738, excluding brokerage commissions.

Item 5.

Interest in Securities of the Issuer.

Item 5 is hereby amended and restated to read as follows:

The aggregate percentage of Shares reported owned by each person named herein is based upon 56,186,235 Shares outstanding, as of September 15, 2016, which is the total number of Shares outstanding as reported in that certain Agreement and Plan of Merger, dated September 16, 2016, by and among the Issuer and the other parties thereto, filed as an exhibit to the Issuer’s Form 8-K filed with the Securities and Exchange Commission (the “SEC”) on September 19, 2016.

A.	Starboard V&O Fund

(a)

As of the close of business on September 19, 2016, Starboard V&O Fund beneficially owned 2,120,887 Shares.

Percentage: Approximately 3.77%

(b)

1. Sole power to vote or direct vote: 2,120,887

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 2,120,887

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

(c)

The transactions in the Shares by Starboard V&O Fund during the past sixty days are set forth in Schedule A and are incorporated herein by reference.

B.	Starboard S LLC

(a)

As of the close of business on September 19, 2016, Starboard S LLC beneficially owned 253,578 Shares.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 253,578

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 253,578

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

(c)

The transactions in the Shares by Starboard S LLC during the past sixty days are set forth in Schedule A and are incorporated herein by reference.

CUSIP NO. 45672H104

C.	Starboard C LP

(a)

As of the close of business on September 19, 2016, Starboard C LP beneficially owned 140,141 Shares.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 140,141

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 140,141

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

(c)

The transactions in the Shares by Starboard C LP during the past sixty days 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 140,141 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 140,141

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 140,141

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. The transactions in the Shares on behalf of Starboard C LP during the past sixty days 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 140,141 shares owned by Starboard C LP.

Percentage: Less than 1%

(b)

1. Sole power to vote or direct vote: 140,141

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 140,141

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. The transactions in the Shares on behalf of Starboard C LP during the past sixty days are set forth in Schedule A and are incorporated herein by reference.

CUSIP NO. 45672H104

F.	Starboard Value LP

(a)

As of the close of business on September 19, 2016, 285,394 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) 2,120,887 Shares owned by Starboard V&O Fund, (ii) 253,578 Shares owned by Starboard S LLC, (iii) 140,141 Shares owned by Starboard C LP, and (iv) 285,394 Shares held in the Starboard Value LP Account.

Percentage: Approximately 4.98%

(b)

1. Sole power to vote or direct vote: 2,800,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 2,800,000

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 S LLC and Starboard C LP during the past sixty days 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) 2,120,887 Shares owned by Starboard V&O Fund, (ii) 253,578 Shares owned by Starboard S LLC, (iii) 140,141 Shares owned by Starboard C LP, and (iv) 285,394 Shares held in the Starboard Value LP Account.

Percentage: Approximately 4.98%

(b)

1. Sole power to vote or direct vote: 2,800,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 2,800,000

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. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and through the Starboard Value LP Account during the past sixty days are set forth in Schedule A and are incorporated herein by reference.

H.	Principal Co

(a)

Principal Co, as a member of Starboard Value GP, may be deemed the beneficial owner of the (i) 2,120,887 Shares owned by Starboard V&O Fund, (ii) 253,578 Shares owned by Starboard S LLC, (iii) 140,141 Shares owned by Starboard C LP, and (iv) 285,394 Shares held in the Starboard Value LP Account.

Percentage: Approximately 4.98%

(b)

1. Sole power to vote or direct vote: 2,800,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 2,800,000

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. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and through the Starboard Value LP Account during the past sixty days are set forth in Schedule A and are incorporated herein by reference.

CUSIP NO. 45672H104

I.	Principal GP

(a)

Principal GP, as the general partner of Principal Co, may be deemed the beneficial owner of the (i) 2,120,887 Shares owned by Starboard V&O Fund, (ii) 253,578 Shares owned by Starboard S LLC, (iii) 140,141 Shares owned by Starboard C LP, and (iv) 285,394 Shares held in the Starboard Value LP Account.

Percentage: Approximately 4.98%

(b)

1. Sole power to vote or direct vote: 2,800,000

2. Shared power to vote or direct vote: 0

3. Sole power to dispose or direct the disposition: 2,800,000

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. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and through the Starboard Value LP Account during the past sixty days 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) 2,120,887 Shares owned by Starboard V&O Fund, (ii) 253,578 Shares owned by Starboard S LLC, (iii) 140,141 Shares owned by Starboard C LP, and (iv) 285,394 Shares held in the Starboard Value LP Account.

Percentage: Approximately 4.98%

(b)

1. Sole power to vote or direct vote: 0

2. Shared power to vote or direct vote: 2,800,000

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

4. Shared power to dispose or direct the disposition: 2,800,000

(c)

None of Messrs. Smith, Mitchell or Feld has entered into any transactions in the Shares during the past sixty days. The transactions in the Shares on behalf of each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and through the Starboard Value LP Account during the past sixty days are set forth in Schedule A and are incorporated herein by reference.

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 or its pecuniary interest therein.

(d)

No person other than the Reporting Persons is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the Shares.

(e)

As of September 19, 2016, the Reporting Persons ceased to be the beneficial owners of more than 5% of the outstanding Shares of the Issuer.

Item 6.

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

Item 6 is hereby amended to add the following:

As described in the Schedule 13D, each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and Starboard Value LP through the Starboard Value LP Account previously entered into certain cash-settled total return swap agreements with Société Générale as the counterparty (the “Swap Agreements”), which provided each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and Starboard Value LP with economic results that were comparable to the economic results of ownership but did not provide each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and Starboard Value LP with the power to vote or direct the voting or dispose of or direct the disposition of the notional Shares that were the subject of the Swap Agreements. Each of Starboard V&O Fund, Starboard S LLC, Starboard C LP and Starboard Value LP has exited its swap position and is no longer a party to the Swap Agreements.

CUSIP NO. 45672H104

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 20, 2016

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. 45672H104

SCHEDULE A

Transactions in the Shares During the Past Sixty Days

Nature of the Transaction

Amount of Securities

Purchased/(Sold)

Price Per

Share($)

Date of

Purchase/Sale

STARBOARD VALUE AND OPPORTUNITY MASTER FUND LTD

Purchase of Common Stock	74,400	18.4835	08/04/2016
Sale of Common Stock	(94,682)	21.4580	08/31/2016
Sale of Common Stock	(56,810)	21.4051	08/31/2016
Sale of Common Stock	(18,937)	21.8484	09/01/2016
Sale of Common Stock	(37,873)	21.9574	09/01/2016
Sale of Common Stock	(56,809)	22.0161	09/01/2016
Sale of Common Stock	(37,873)	22.5688	09/02/2016
Sale of Common Stock	(151,492)	26.2500	09/19/2016
Sale of Common Stock	(189,365)	26.2754	09/19/2016
Sale of Common Stock	(227,238)	26.2611	09/19/2016

STARBOARD VALUE AND OPPORTUNITY S LLC

Purchase of Common Stock	9,400	18.4835	08/04/2016
Sale of Common Stock	(11,321)	21.4580	08/31/2016
Sale of Common Stock	(6,792)	21.4051	08/31/2016
Sale of Common Stock	(2,264)	21.8484	09/01/2016
Sale of Common Stock	(4,528)	21.9574	09/01/2016
Sale of Common Stock	(6,792)	22.0161	09/01/2016
Sale of Common Stock	(4,528)	22.5688	09/02/2016
Sale of Common Stock	(18,113)	26.2500	09/19/2016
Sale of Common Stock	(22,640)	26.2754	09/19/2016
Sale of Common Stock	(27,169)	26.2611	09/19/2016

STARBOARD VALUE AND OPPORTUNITY C LP


Purchase of Common Stock	5,200	18.4835	08/04/2016
Sale of Common Stock	(6,256)	21.4580	08/31/2016
Sale of Common Stock	(3,754)	21.4051	08/31/2016
Sale of Common Stock	(1,251)	21.8484	09/01/2016
Sale of Common Stock	(2,503)	21.9574	09/01/2016
Sale of Common Stock	(3,754)	22.0161	09/01/2016
Sale of Common Stock	(2,503)	22.5688	09/02/2016
Sale of Common Stock	(10,010)	26.2500	09/19/2016
Sale of Common Stock	(12,513)	26.2754	09/19/2016
Sale of Common Stock	(15,015)	26.2611	09/19/2016

CUSIP NO. 45672H104

STARBOARD VALUE LP

(Through the Starboard Value LP Account)

Purchase of Common Stock	11,000	18.4835	08/04/2016
Sale of Common Stock	(12,741)	21.4580	08/31/2016
Sale of Common Stock	(7,644)	21.4051	08/31/2016
Sale of Common Stock	(2,548)	21.8484	09/01/2016
Sale of Common Stock	(5,096)	21.9574	09/01/2016
Sale of Common Stock	(7,645)	22.0161	09/01/2016
Sale of Common Stock	(5,096)	22.5688	09/02/2016
Sale of Common Stock	(20,385)	26.2500	09/19/2016
Sale of Common Stock	(25,482)	26.2754	09/19/2016
Sale of Common Stock	(30,578)	26.2611	09/19/2016