UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 1, 2013

OCZ TECHNOLOGY GROUP, INC.

(Exact name of registrant as specified in its charter)

Commission File Number: 1-34650

6373 San Ignacio Avenue,

San Jose, California 95119

(Address of principal executive offices, including zip code)

(408) 733-8400

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

As previously disclosed, on December 17, 2012, the Audit Committee of OCZ Technology Group, Inc. (the “Company”) concluded that the Company should restate its previously-issued consolidated financial statements for fiscal year 2012 and the first quarter of fiscal 2013. In the course of its restatement work for these periods, the Company identified two misclassification items in its previously-issued consolidated financial statements for fiscal years 2009, 2010 and 2011. These items include: 1) the recording of certain previously-expensed manufacturing and freight costs that should have been capitalized in inventory and recorded in cost of goods sold upon shipment, and 2) the classification of certain customer incentive program credits as operating expenses that should have been recorded as an offset to reported net revenue.

On July 1, 2013, the Audit Committee, in consultation with Company management, concluded that the Company should restate its previously-issued consolidated financial statements for the years ended February 28, 2009, 2010 and 2011 to correct these items. The aggregate impact of these items on the Company’s previously-reported net income or loss for these periods is expected to be de minimis, although gross profit levels will be reduced from amounts previously-reported. We believe the impact to periods prior to 2012 will be isolated to these two items, though we have not yet completed our restatement work.

The impact of all adjustments made during the restatement process will be disclosed in more detail in the Company’s restated financial statements, which will be provided as soon as practicable. Until the restatements are released, in addition to the financial statements for the periods referenced in the paragraph above, related press releases and shareholder communications describing the results reported in these financial statements should no longer be relied upon. The Company has discussed these matters with its Independent Registered Public Accounting Firm

The Company issued a press release on July 2, 2013 relating to the restatement. A copy of that press release is filed as Exhibit 99.1 to this Current Report on Form 8-K.

Cautionary Statement on Forward-Looking Statements

This current report on Form 8-K contains forward-looking statements that involve risks, uncertainties, assumptions and other factors which, if they do not materialize or prove correct, could cause our results to differ materially from those expressed or implied by such forward-looking statements. All statements, other than statements of historical fact, are statements that could be deemed forward-looking statements, including, statements about our intention to restate our financial statements, the type and extent of matters reflected in such restated financial statements, and the timing of filing of our restated financial statements. For further information on other risks and uncertainties, please refer to “Item 1A — Risk Factors” in Part I in OCZ’s Annual Report on Form 10-K filed with the SEC on May 14, 2012, and statements made in other subsequent filings. The filing is available both at www.sec.gov as well as via OCZ’s website at www.ocztechnology.com. OCZ does not undertake to update its forward-looking statements.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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