X0306 5 2012-12-31 0 1 0000728331 SUTRON CORP STRN 0001320449 Hooper Sidney Calvin 20621 PARKSIDE CIRCLE STERLING VA 20165 0 1 0 0 CFO SUTRON COMMON STOCK 2012-09-17 4 S 0 4400 5.21 D 117902 D SUTRON COMMON STOCK 2012-09-18 4 S 0 4451 5.25 D 113451 D SUTRON COMMON STOCK 2012-12-06 4 S 0 300 5.17 D 113151 D SUTRON COMMON STOCK 2012-12-07 4 S 0 86 5.15 D 113065 D SUTRON COMMON STOCK 2012-12-10 4 S 0 300 5.11 D 112765 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.10 D 112665 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.11 D 112565 D SUTRON COMMON STOCK 2012-12-10 4 S 0 1400 5.10 D 111165 D SUTRON COMMON STOCK 2012-12-10 4 S 0 1500 5.10 D 109665 D SUTRON COMMON STOCK 2012-12-10 4 S 0 1500 5.10 D 108165 D SUTRON COMMON STOCK 2012-12-10 4 S 0 500 5.06 D 107665 D SUTRON COMMON STOCK 2012-12-10 4 S 0 1500 5.05 D 106165 D SUTRON COMMON STOCK 2012-12-10 4 S 0 1900 5.05 D 104265 D SUTRON COMMON STOCK 2012-12-10 4 S 0 3100 5.05 D 101165 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.05 D 101065 D SUTRON COMMON STOCK 2012-12-10 4 S 0 5176 5.03 D 95889 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.02 D 95789 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.01 D 95689 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.01 D 95589 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.00 D 95489 D SUTRON COMMON STOCK 2012-12-10 4 S 0 120 5.00 D 95369 D SUTRON COMMON STOCK 2012-12-10 4 S 0 200 5.00 D 95169 D SUTRON COMMON STOCK 2012-12-10 4 S 0 80 5.00 D 95089 D SUTRON COMMON STOCK 2012-12-10 4 S 0 500 5.00 D 94589 D SUTRON COMMON STOCK 2012-12-10 4 S 0 700 5.00 D 93889 D SUTRON COMMON STOCK 2012-12-10 4 S 0 100 5.00 D 93789 D SUTRON COMMON STOCK 2012-12-11 4 S 0 1000 5.00 D 92789 D SUTRON COMMON STOCK 2012-12-11 4 S 0 200 5.02 D 92589 D SUTRON COMMON STOCK 2012-12-11 4 S 0 1100 5.04 D 91489 D SUTRON COMMON STOCK 2012-12-11 4 S 0 100 5.02 D 91389 D Sutron Common Stock .55 2012-10-08 4 C 0 75000 0 D 2005-12-30 2012-10-22 Sutron Common Stock 120000 78789 D Sutron Common Stock (Restricted Stock Unit) 0 2012-05-09 4 A 0 4000 0 D 2013-01-01 2014-05-09 Sutron Common Stock 4000 78789 D /s/ Sidney Hooper 2013-07-02