SC TO-T/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE TO

(Amendment No. 4)

(RULE 14d-100)

TENDER OFFER STATEMENT UNDER SECTION 14(D)(1) OR 13(E)(1)

OF THE SECURITIES EXCHANGE ACT OF 1934

Wind River Systems, Inc.

(Name of Subject Company (Issuer))

APC II Acquisition Corporation

(Offeror)

A Wholly Owned Subsidiary of

Intel Corporation

(Parent of Offeror)

(Names of Filing Persons (identifying status as offeror, issuer or other person))

COMMON STOCK, $0.001 PAR VALUE

(Title of Class of Securities)

973149107

(CUSIP Number of Class of Securities)

Marty M. Linné, Esq.

Intel Corporation

2200 Mission College Blvd.

Santa Clara, CA 95054-1549

(408) 765-8080

(Name, address, and telephone numbers of person authorized to receive notices and communications on behalf of filing persons)

Copies to:

Robert Townsend, Esq.

S. Dawn Smith, Esq.

Morrison & Foerster LLP

425 Market Street

San Francisco, CA 94105

(415) 268-7000

CALCULATION OF FILING FEE

Transaction Valuation(1)	Amount of Filing Fee(2)
$1,069,696,661.50	$59,689.07

(1) Estimated for purposes of calculating the amount of the filing fee only. This calculation is based on the offer to purchase up to 93,017,101 shares of common stock, par value $0.001 per share of Wind River Systems, Inc. (the “Seller”), including the associated rights to purchase shares of the Series A Junior Participating Preferred Stock, par value $0.001 per share, of the Seller, at a purchase price of $11.50 per share, net to the tendering stockholder in cash, without interest and subject to any required withholding of taxes. Such shares consist of (i) 76,892,405 shares of common stock of the Seller that were issued and outstanding as of May 31, 2009; (ii) 9,819,686 shares of common stock of the Seller potentially issuable upon conversion of outstanding in-the-money stock options as of May 31, 2009, (iii) 3,173,360 shares of common stock subject to outstanding restricted stock units as of May 31, 2009, (iv) 2,931,650 shares of common stock were reserved for issuance under the under the employee stock purchase plan of the Seller as of May 31, 2009, and (v) 200,000 shares of common stock subject to outstanding performance share awards as of May 31, 2009.

(2) The filing fee was calculated in accordance with Rule 0-11 under the Securities Exchange Act of 1934, as amended, and Fee Rate Advisory #5 for fiscal year 2009, issued by the Securities and Exchange Commission on March 11, 2009, by multiplying the transaction value by .00005580.

x Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

Amount Previously Paid: $59,689.07	Filing Party: Intel Corporation and APC II Acquisition Corporation
Form of Registration No.: Schedule TO	Date Filed: June 11, 2009

¨ Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the statement relates:

x Third-party tender offer subject to Rule 14d-1.

¨ Issuer tender offer subject to Rule 13e-4.

¨ Going-private transaction subject to Rule 13e-3.

¨ Amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results of the tender offer. ¨

*If applicable, check the appropriate box(es) below to designate the appropriate rule provision(s) relied upon:

¨ Rule 13e-4(i) (cross-border issuer tender offer).

¨ Rule 14d-1(d) (cross-border third-party tender offer).

This Amendment No. 4 (this “Amendment”) amends and supplements the Tender Offer Statement on Schedule TO and the exhibit index of the Schedule TO that was originally filed with the Securities and Exchange Commission on June 11, 2009 (together with any amendments and supplements thereto, including that certain Amendment No. 1 filed on June 16, 2009, Amendment No. 2 filed on June 24, 2009 and Amendment No. 3 filed on July 2, 2009 the “Schedule TO”), by (i) APC II Acquisition Corporation, a Delaware corporation (the “Purchaser”) and wholly owned subsidiary of Intel Corporation, a Delaware corporation (“Parent”), and (ii) Parent. This Amendment relates to the offer (the “Offer”) by the Purchaser to purchase all of the outstanding shares of common stock, par value $0.001 per share (the “Company Shares”) including the associated rights to purchase shares of Series A Junior Participating Preferred Stock, par value $0.001 per share (the “Rights,” and collectively, with the Company Shares, the “Shares”), of Wind River Systems, Inc., a Delaware corporation (the “Seller “), at a purchase price of $11.50 per Share, net to the tendering stockholder in cash, without interest and less any required withholding taxes, upon the terms and subject to the conditions set forth in the Offer to Purchase dated June 11, 2009 (together with any amendments and supplements thereto, the “Offer to Purchase”) and in the related Letter of Transmittal.

Capitalized terms used and not defined herein shall have the meanings assigned to such terms in the Offer to Purchase.

The information set forth in the Offer to Purchase and the related Letter of Transmittal is incorporated herein by reference with respect to Items 1 through 9, 11 and 12 of this Schedule TO, except that such information is hereby amended and supplemented to the extent specifically provided herein.

Item 11. Additional Information.

Item 11 of the Schedule TO is hereby amended and supplemented as follows:

“The initial offering period for the Offer expired as scheduled at 12:00 a.m. (Midnight), New York City time, on July 9, 2009. The Depositary has advised Parent and Purchaser that, as of 12:00 a.m. (Midnight), New York City time, on July 9, 2009, approximately 68,859,629 Shares had been tendered and not withdrawn from the Offer, including approximately 6,223,509 Shares subject to guaranteed delivery procedures. The Purchaser has accepted for payment all Shares validly tendered and not properly withdrawn. The number of Shares tendered pursuant to the Offer satisfies the Minimum Condition. The Shares validly tendered and not properly withdrawn together with the Shares delivered through notices of guaranteed delivery represent approximately 89% of the Shares outstanding.

On July 10, 2009, Parent issued a press release announcing that Parent has commenced, through the Purchaser, a subsequent offering period for all remaining untendered Shares effective as of 9:00 a.m., New York City time, on July 10, 2009. The subsequent offering period will expire at 12:00 a.m. (Midnight), New York City time, on July 15, 2009, unless extended. Any such extension will be followed by a public announcement no later than 9:00 a.m., New York City time, on the next business day after the subsequent offering period is scheduled to expire.

All Shares validly tendered during the subsequent offering period will be immediately accepted for payment by Purchaser and tendering stockholders will promptly thereafter be paid of $11.50 per share, less any required withholding taxes, in cash and without interest, which is the same amount per share that was offered and paid during initial offering period. Procedures for tendering Shares during the subsequent offering period are the same as during the initial offering period, except that (1) Shares cannot be delivered by the guaranteed delivery procedure and (2) pursuant to Rule 14d-7(a)(2) promulgated under the Exchange Act, Shares tendered during the subsequent offering period may not be withdrawn. Shares validly tendered during the initial offering period may not be withdrawn during the subsequent offering period.”

Item 12. Exhibits.

Item 12 of the Schedule TO is hereby amended and supplemented by adding the following text thereto:

Exhibit	Exhibit Name
(a)(5)(E)	Press Release issued by Intel Corporation on July 10, 2009.

SIGNATURE

After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

	APC II Acquisition Corporation
Date: July 10, 2009	By:	/s/ Tiffany D. Silva
	Name: Title:	Tiffany D. Silva Secretary

	Intel Corporation
Date: July 10, 2009	By:	/s/ Cary I. Klafter
	Name: Title:	Cary I. Klafter Vice President, Legal and Corporate Affairs, and Corporate Secretary

Certificate of Resolutions Regarding Signature Authority

I, Teresa L. Remillard, duly appointed and acting Assistant Secretary of Intel Corporation, a Delaware corporation, do hereby certify that the following is a true and correct copy of resolutions adopted by the Board of Directors of Intel Corporation at a meeting duly called and held on May 19, 2009, at which a quorum was present at all times, and that such resolutions have not been amended or rescinded and are still in full force and effect:

RESOLVED, that the Chairman of the Board, the President and Chief Executive Officer, the Executive Vice President and President, Intel Capital, the Chief Financial Officer, the Secretary, the General Counsel or the Treasurer, (the “Authorized Officers”), or their designees, singly or jointly, are authorized in the name and on behalf of the Corporation to execute and deliver such agreements, documents, instruments and certificates as appropriate and desirable to evidence the terms and conditions of the Transaction (collectively, the “Definitive Agreements”); and be it further

RESOLVED, that the Authorized Officers or their designees, singly or jointly, are authorized in the name and on behalf of the Corporation to do any and all further things that may be necessary or advisable to carry out and effectuate the Transaction and these resolutions and to fully to perform the obligations of the Corporation under the Definitive Agreements and the Related Agreements, including, without limitation, cause to be prepared and to execute and cause to be filed with the Securities and Exchange Commission (the “Commission”) a Tender Offer Statement and/or a registration statement to register the Corporation’s common stock, if any, to be issued in connection with the Transaction and/or assumption of options or other convertible securities to be assumed in connection with the Transaction; and be it further

RESOLVED, that the appropriate officers of the Corporation or their designees, singly or jointly, are authorized in the name and on behalf of the Corporation to prepare and make any public announcement or make such filings with the Commission or applicable stock exchange regarding the Transaction that any appropriate officer of the Corporation deems necessary or appropriate.

IN WITNESS WHEREOF, I have executed this certificate this 16th day of June, 2009.

By:	/s/ Teresa L. Remillard
Name:	Teresa L. Remillard
Title:	Assistant Secretary

EXHIBIT INDEX

Exhibit	Exhibit Name
(a)(1)(A)	Offer to Purchase dated June 11, 2009.*
(a)(1)(B)	Letter of Transmittal (including Guidelines for Certification of Taxpayer Identification Number (TIN) on Substitute Form W-9).*
(a)(1)(C)	Notice of Guaranteed Delivery.*
(a)(1)(D)	Form of Letter to Clients for use by Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees.*
(a)(1)(E)	Form of Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees.*
(a)(5)(A)	Joint Press Release issued by Intel Corporation and Wind River Systems, Inc. on June 4, 2009, incorporated herein by reference to the Schedule TO filed by Intel Corporation on June 4, 2009.*
(a)(5)(B)	Summary Newspaper Advertisement as published in The Wall Street Journal on June 11, 2009.*
(a)(5)(C)	Form of Letter to Participants in the Wind River Systems, Inc. 401(k) Plan.*
(a)(5)(D)	Press Release issued by Intel Corporation on June 24, 2009.*
(a)(5)(E)	Press Release issued by Intel Corporation on July 10, 2009.
(b)	Not applicable.
(d)(1)	Agreement and Plan of Merger, by and among Intel Corporation, APC II Acquisition Corporation and Wind River Systems, Inc., dated June 4, 2009.*
(d)(2)	Tender and Support Agreement, by and among Intel Corporation, APC II Acquisition Corporation and certain stockholders of Wind River Systems, Inc. listed on Annex I thereto, dated June 4, 2009.*
(d)(3)	Executive Employment Agreement, by and among Wind River Systems, Inc., Intel Corporation and Kenneth R. Klein, dated June 4, 2009.*
(d)(4)	Non-Competition Agreement, by and among Intel Corporation, Wind River Systems, Inc. and Kenneth Klein, dated June 4, 2009.*
(d)(5)	Executive Employment Agreement, by and among Wind River Systems, Inc., Intel Corporation and Ian Halifax, dated June 4, 2009.*
(g)	Not applicable.
(h)	Not applicable.

* Filed Previously

EX-99.(A)(5)(E)

Exhibit (a)(5)(E)

News Release

INTEL CORPORATION ACCEPTS SHARES IN TENDER OFFER FOR

WIND RIVER SYSTEMS, INC. AND COMMENCES SUBSEQUENT OFFERING PERIOD

SANTA CLARA, Calif., July 10, 2009 – Intel Corporation today announced that the initial offer period for its tender offer through its subsidiary, APC II Acquisition Corporation (APC II), for all outstanding shares of common stock, including rights to purchase shares of Series A Junior Participating Preferred Stock, of Wind River Systems Inc. for $11.50 per share expired at 12 a.m. EDT on July 9, 2009.

The depositary for the tender offer has advised Intel that, as of the expiration of the initial offering period, a total of approximately 69.0 million shares of Wind River common stock were validly tendered and not withdrawn (including approximately 6.4 million shares subject to guaranteed delivery procedures), representing approximately 89 percent of the outstanding shares of Wind River common stock. All shares that were validly tendered and not properly withdrawn during the initial offering period have been accepted for payment.

Intel also announced that it will commence through APC II a subsequent offering period to acquire all remaining shares of Wind River common stock, which will begin on July 10, 2009 and expire at 12 a.m. EDT on July 15, 2009, unless extended. Any shares validly tendered during the subsequent offering period will be immediately accepted for payment, and tendering shareholders will promptly thereafter be paid of $11.50 per share, less any required withholding taxes, in cash and without interest, which is the same amount per share that was offered and paid in the initial offering period. The subsequent offering period enables holders of shares of Wind River common stock who did not tender during the initial offering period to participate in the offer and receive the offer price on an expedited basis rather than waiting until the completion of the merger. Shares tendered during the subsequent offering period cannot be delivered by the guaranteed delivery procedure and may not be withdrawn. In addition, shares validly tendered during the initial offering period may not be withdrawn during the subsequent offering period.

Following the expiration of the subsequent offering period, Intel intends to complete the acquisition of Wind River through what is known as a “short-form merger,” that is, without a vote or meeting of Wind River Systems Inc.’s remaining stockholders. Following the merger, Wind River will become a wholly owned subsidiary of Intel, and each share of Wind River’s outstanding common stock will be cancelled and converted into the right to receive the same consideration, without interest, received by holders who tendered in the tender offer. Thereafter, Wind River common stock will cease to be traded on the NASDAQ Global Select Market.

About Intel

Intel (NASDAQ: INTC), the world leader in silicon innovation, develops technologies, products and initiatives to continually advance how people work and live. Additional information about Intel is available at www.intel.com/pressroom and blogs.intel.com.

This press release is neither an offer to purchase nor a solicitation of an offer to sell shares of Wind River. Intel and APC II Acquisition Corporation have filed a tender offer statement with the Securities and Exchange Commission (“SEC”), and have mailed an offer to purchase, forms of letter of transmittal and related documents to Wind River stockholders. Wind River has filed with the SEC, and has mailed to Wind River stockholders, a solicitation/recommendation statement on Schedule 14D-9. These documents contain important information about the tender offer and stockholders of Wind River are urged to read them carefully. These documents are available at no charge at the SEC’s website at www.sec.gov. The tender offer statement and the related materials may be obtained for free by directing a request by mail to Georgeson Inc., 199 Water Street, New York, New York 10038 or by calling toll-free (877) 278-4762. In addition, a copy of the offer to purchase, letter of transmittal and certain other related tender offer documents may be obtained free of charge by directing a request to Intel Corporation at www.intel.com, or Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054-1549, Attn: Investor Relations.

Intel is a trademark of Intel Corporation in the United States and other countries.

* Other names and brands may be claimed as the property of others.