X0306 4 2012-12-31 0 0001054721 BSQUARE CORP /WA BSQR 0001275219 MAHAN SCOTT C 110 - 110TH AVE., NE SUITE 200 BELLEVUE WA 98004 0 1 0 0 Sr. VP Operations & CFO Common Stock 2012-12-31 4 F 0 823 2.9324 D 89453 D Represents shares that were withheld to pay the minimum tax liability for the restricted stock units that vested on December 31, 2012. 328 shares were withheld as to restricted stock units granted on February 22, 2011 and 495 shares were withheld as to restricted stock units granted on June 30, 2011. /s/ Scott C. Mahan 2013-01-03