X0306 4 2012-07-31 1 0000739944 MEDTOX SCIENTIFIC INC MTOX 0001187451 WIERSMA KEVIN J 402 WEST COUNTY ROAD D ST PAUL MN 55112 0 1 0 0 V.P., COO-Labs, and CFO Common Stock 2012-07-31 4 D 0 86917 27.00 D 34210 D Common Stock 2012-07-31 4 D 0 30045 27.00 D 4165 D Common Stock 2012-07-31 4 D 0 4165 27.00 D 0 D Non-Qualified Stock Option (right to buy) 3.70 2012-07-31 4 D 0 30000 27.00 D 2003-09-11 2013-12-31 Common Stock 30000 0 D Non-Qualified Stock Option (right to buy) 4.4067 2012-07-31 4 D 0 15000 27.00 D 2003-01-01 2013-01-01 Common Stock 15000 0 D Disposition is exempt under Rule 16(b)(3) Disposed of pursuant to merger agreement between issuer and Laboratory Corporation of America Holdings in exchange for $27.00 per share cash. Attributable to non-qualified deferred compensation plan. This option, which is fully vested, was canceled in the merger in exchange for a cash payment of $23.30, representing the difference between the exercise price of the option and the $27.00 per share merger consideration. This option, which is fully vested, was canceled in the merger in exchange for a cash payment of $25.5933, representing the difference between the exercise price of the option and the $27.00 per share merger consideration. Kevin J Wiersma 2012-08-01