X0306 4 2012-08-29 0000728331 SUTRON CORP STRN 0001320449 Hooper Sidney Calvin 20621 PARKSIDE CIRCLE STERLING VA 20165 0 1 0 0 CFO SUTRON COMMON STOCK 2012-08-29 4 S 0 290 5.25 D 139191 D SUTRON COMMON STOCK 2012-08-29 4 S 0 100 5.12 D 139091 D SUTRON COMMON STOCK 2012-08-29 4 S 0 400 5.11 D 138691 D SUTRON COMMON STOCK 2012-08-29 4 S 0 274 5.17 D 138417 D SUTRON COMMON STOCK 2012-08-29 4 S 0 293 5.13 D 138124 D SUTRON COMMON STOCK 2012-08-29 4 S 0 451 5.19 D 137673 D SUTRON COMMON STOCK 2012-08-29 4 S 0 300 5.24 D 137373 D SUTRON COMMON STOCK 2012-08-29 4 S 0 100 5.24 D 137273 D SUTRON COMMON STOCK 2012-08-29 4 S 0 100 5.24 D 137173 D SUTRON COMMON STOCK 2012-08-29 4 S 0 100 5.27 D 137073 D SUTRON COMMON STOCK 2012-08-29 4 S 0 500 5.2585 D 136573 D SUTRON COMMON STOCK 2012-08-29 4 S 0 2700 5.25 D 133873 D SUTRON COMMON STOCK 2012-08-29 4 S 0 1600 5.26 D 132273 D SUTRON COMMON STOCK 2012-08-29 4 S 0 300 5.25 D 131973 D SUTRON COMMON STOCK 2012-08-29 4 S 0 800 5.2 D 131173 D SUTRON COMMON STOCK 2012-08-29 4 S 0 155 5.24 D 131018 D SUTRON COMMON STOCK 2012-08-29 4 S 0 390 5.2 D 130628 D SUTRON COMMON STOCK 2012-08-29 4 S 0 180 5.18 D 130448 D SUTRON COMMON STOCK 2012-08-29 4 S 0 300 5.2 D 130148 D SUTRON COMMON STOCK 2012-08-29 4 S 0 200 5.18 D 129948 D SUTRON COMMON STOCK 2012-08-29 4 S 0 1250 5.2 D 128698 D SUTRON COMMON STOCK 2012-08-29 4 S 0 247 5.26 D 128451 D SUTRON COMMON STOCK 2012-09-13 4 S 0 2000 5.2817 D 126451 D SUTRON COMMON STOCK 2012-09-14 4 S 0 4149 5.2571 D 122302 D /s/ Sid Hooper 2012-09-17