X0306 4 2012-03-23 0000728331 SUTRON CORP STRN 0001320449 Hooper Sidney Calvin 20621 PARKSIDE CIRCLE STERLING VA 20165 0 1 0 0 CFO Sutron Common Stock 2012-03-23 4 S 0 300 5.95 D 150531 D Sutron Common Stock 2012-03-23 4 S 0 1123 6.00 D 149408 D Sutron Common Stock 2012-03-23 4 S 0 77 6.02 D 149331 D Sutron Common Stock 2012-06-20 4 S 0 400 5.11 D 148931 D Sutron Common Stock 2012-06-22 4 S 0 400 5.10 D 148531 D Sutron Common Stock 2012-06-27 4 S 0 400 4.95 D 148131 D Sutron Common Stock 2012-08-24 4 S 0 123 5.597 D 148028 D Sutron Common Stock 2012-08-24 4 S 0 500 5.55 D 147528 D Sutron Common Stock 2012-08-24 4 S 0 133 5.54 D 147395 D Sutron Common Stock 2012-08-24 4 S 0 200 5.54 D 147195 D Sutron Common Stock 2012-08-24 4 S 0 100 5.38 D 147095 D Sutron Common Stock 2012-08-24 4 S 0 400 5.37 D 146695 D Sutron Common Stock 2012-08-24 4 S 0 500 5.35 D 146195 D Sutron Common Stock 2012-08-24 4 S 0 300 5.3 D 145895 D Sutron Common Stock 2012-08-24 4 S 0 400 5.35 D 145495 D Sutron Common Stock 2012-08-24 4 S 0 200 5.37 D 145295 D Sutron Common Stock 2012-08-24 4 S 0 30 5.27 D 145265 D Sutron Common Stock 2012-08-24 4 S 0 100 5.37 D 145165 D Sutron Common Stock 2012-08-24 4 S 0 2014 5.25 D 143151 D Sutron Common Stock 2012-08-29 4 S 0 300 5.35 D 142851 D Sutron Common Stock 2012-08-29 4 S 0 100 5.38 D 142751 D Sutron Common Stock 2012-08-29 4 S 0 295 5.35 D 142456 D Sutron Common Stock 2012-08-29 4 S 0 300 5.3 D 142156 D Sutron Common Stock 2012-08-29 4 S 0 5 5.25 D 142151 D Sutron Common Stock 2012-08-29 4 S 0 225 5.27 D 141926 D Sutron Common Stock 2012-08-29 4 S 0 295 5.25 D 141631 D Sutron Common Stock 2012-08-29 4 S 0 300 5.2 D 141331 D Sutron Common Stock 2012-08-29 4 S 0 100 5.23 D 141231 D Sutron Common Stock 2012-08-29 4 S 0 1400 5.2 D 139831 D Sutron Common Stock 2012-08-29 4 S 0 350 5.15 D 139481 D Stock Option .55 2012-08-22 4 C 0 45000 24750 D 2005-12-30 2012-10-22 Sutron Common Stock 120000 148131 D /s/ Sid Hooper 2012-09-17