Information regarding the Company’s significant accounting policies is contained in Note 2, “Summary of significant accounting policies,” to the financial statements in the Company’s Annual Report on Form 10-K for the year ended January 28, 2012. Presented below in this and the following notes is supplemental information that should be read in conjunction with “Notes to Financial Statements” in the Annual Report.

Fiscal quarter

The Company’s quarterly periods are the 13 weeks ending on the Saturday closest to April 30, July 31, October 31, and January 31. The Company’s second quarters in fiscal 2012 and 2011 ended on July 28, 2012 and July 30, 2011, respectively.

Share-based compensation

The Company measures share-based compensation cost on the grant date, based on the fair value of the award, and recognizes the expense over the requisite service period for awards expected to vest. The Company estimated the grant date fair value of stock options using a Black-Scholes valuation model using the following assumptions for the periods indicated:

The Company granted 183 and 124 stock options during the 26 weeks ended July 28, 2012 and July 30, 2011, respectively. The weighted-average grant date fair value of these options was $45.00 and $28.62, respectively.

The Company recorded stock compensation expense of $3,454 and $2,388 for the 13 weeks ended July 28, 2012 and July 30, 2011, respectively. The Company recorded stock compensation expense of $6,346 and $5,196 for the 26 weeks ended July 28, 2012 and July 30, 2011, respectively. At July 28, 2012, there was approximately $36,616 of unrecognized compensation expense related to unvested options and restricted stock.