X0303 4/A 2010-09-10 2010-09-14 0 0001034755 BRIGHAM EXPLORATION CO BEXP 0001238743 LARSON JEFFREY E 6300 BRIDGE POINT PARKWAY BLDG 2 SUITE 500 AUSTIN TX 78730 0 1 0 0 Executive V.P. Exploration Common stock, par value $.01 2010-09-10 4 F 0 1323 16.955 D 38008 D Reflects reporting person's exchange of restricted stock for the tax withholding obligation that was triggered by the vesting of restricted stock. /s/ Kari A. Potts, Attorney-in-fact 2010-09-14