FIO Fusion-IO, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE TO

(Rule 14d-100)

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

OF THE SECURITIES EXCHANGE ACT OF 1934

Fusion-io, Inc.

(Name of Subject Company (Issuer))

Flight Merger Sub, Inc.

(Name of Filing Persons (Offerors))

a wholly owned subsidiary of

SanDisk Corporation

(Name of Filing Persons (Offerors))

Common Stock, par value $0.0002 per share

(Title of Class of Securities)

36112J107

(CUSIP Number of Class of Securities)

Eric S. Whitaker, Esq.

Senior Vice President and Chief Legal Officer

SanDisk Corporation

951 SanDisk Drive

Milpitas, California 95035
(408) 801-1000

(Name, Address and Telephone Numbers of Person Authorized to Receive

Notices and Communications on Behalf of Filing Persons)

Copies to:

Kenton J. King, Esq.

M. Amr Razzak, Esq.

Skadden, Arps, Slate, Meagher & Flom LLP

525 University Avenue, Suite 1100

Palo Alto, CA  94301

(650) 470-4500

CALCULATION OF FILING FEE

*A filing fee is not required in connection with this filing as it 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.

o        issuer tender offer subject to Rule 13e-4.

o        going-private transaction subject to Rule 13e-3.

o        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:     o

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

o        Rule 13e-4(i) (Cross-Border Issuer Tender Offer)

o        Rule 14d-1(d) (Cross-Border Third-Party Tender Offer)

This filing on Schedule TO consists of the following communications relating to the planned tender offer by Flight Merger Sub, Inc. (the “Purchaser”), a Delaware corporation and a wholly owned subsidiary of SanDisk Corporation, a Delaware corporation (“SanDisk”), to purchase all outstanding shares of Common Stock, par value $0.0002 per share, of Fusion-io, Inc., a Delaware corporation (“Fusion-io”), to be commenced pursuant to an Agreement and Plan of Merger, dated as of June 16, 2014, by and among SanDisk, the Purchaser and Fusion-io:

(a)          Presentation to Fusion-io employees by Sanjay Mehrotra, SanDisk’s President and Chief Executive Officer, Tom Baker, SanDisk’s Senior Vice President, Human Resources and Rene Hartner, SanDisk’s Vice President, Corporate Business Development.

These communications were first used or made available on June 23, 2014.

This filing on Schedule TO does not constitute an offer to buy or a solicitation of an offer to sell any securities.  SanDisk has not yet commenced the tender offer for the shares of Fusion-io at this time.  Upon commencement of the tender offer, SanDisk and Purchaser will file with the Securites and Exchange Commission (the “SEC”) a tender offer statement on Schedule TO and related exhibits (including the offer to purchase, the letter of transmittal and other related documents), and Fusion-io will file with the SEC a solicitation/recommendation statement on Schedule 14D-9 with respect to the tender offer.  Any definitive tender offer documents will be mailed to the stockholders of Fusion-io.  INVESTORS AND SECURITY HOLDERS OF FUSION-IO ARE STRONGLY URGED TO READ THESE AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION.  Investors and security holders will be able to obtain free copies of these documents (if and when available) and other documents filed with the SEC by SanDisk through the website maintained by the SEC at http://www.sec.gov.

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