X0306 4 2013-05-03 0001316625 Silicon Graphics International Corp SGI 0001312322 Pileggi Jennifer C/O SGI 46600 LANDING PARKWAY FREMONT CA 94538 1 SVP, General Counsel/Corp Sec Common Stock 2013-05-03 4 M 0 313 0 A 2758 D Common Stock 2013-05-03 4 F 0 114 13.35 D 2644 D Restricted Stock Units 0 2013-05-03 4 M 0 313 0 A 2013-05-03 Common Stock 313 20625 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. /s/ Jennifer Pratt as Attorney-in-Fact for Jennifer Pileggi 2013-05-06