X0304 4 2012-03-03 0001316625 Silicon Graphics International Corp SGI 0001436721 Pebworth Timothy Lee C/O SGI 46600 LANDING PARKWAY FREMONT CA 94538 1 VP, Corporate Controller & CAO Common Stock 2012-03-03 4 M 0 625 0 A 7271 D Common Stock 2012-03-03 4 F 0 261 9.38 D 7010 D Restricted Stock Units 0 2012-03-03 4 M 0 625 0 D 2012-03-03 Common Stock 625 6250 D Upon vesting, each restricted stock unit was converted into an equivalent number of shares of the Company's common stock. These shares were retained by the Company in order to meet the tax withholding obligations of the award holder in connection with the vesting of an installment of the restricted stock units. The amount retained by the Company was not in excess of the amount of the tax liability. Restricted Stock Units have no Expiration Date. Securities Beneficially Owned include 1,333 shares acquired on 2/14/12 under the Company's 2005 Employee Stock Purchase Plan. RSU Shares vested on a non-trading day, therefore the FMV value reflects the last trading day prior to the vest date. /s/ Jennifer Pratt as Attorney-in-Fact for Timothy Pebworth 2012-03-06