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): February 24, 2016

RESTORATION HARDWARE HOLDINGS, INC.

(Exact name of registrant as specified in its charter)

15 Koch Road, Suite K, Corte Madera, California 94925

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (415) 924-1005

N/A

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

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

On February 24, 2016, Restoration Hardware Holdings, Inc. (“RH”) issued a press release announcing preliminary unaudited results for its fourth quarter and fiscal 2015. A copy of the press release is attached hereto as Exhibit 99.1.

The information provided in this Item 2.02, including Exhibit 99.1, is intended to be “furnished” and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

RH is also disclosing that it may use the rh.com, restorationhardware.com, and ir.restorationhardware.com websites as means of disclosing material non-public information and for complying with its disclosure obligations under Regulation FD.

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.

EXHIBIT INDEX