X0306 4 2015-07-27 1 0000728331 SUTRON CORP STRN 0001381864 McQuivey Raul S 22400 DAVIS DRIVE STERLING VA 20164 1 1 0 0 President and CEO Common Stock 2015-07-27 4 U 0 190600 8.5 D 0 D Common Stock 2015-07-27 4 U 0 358000 8.5 D 0 I As trustee of the Raul S. McQuivey Trust and the Karen T. McQuivey Trust Common Stock 2015-07-27 4 U 0 115000 8.5 D 0 I As trustee of the Raul S. McQuivey Charitable Remainder Unitrust Common Stock 2015-07-27 4 U 0 115000 8.5 D 0 I As trustee of the Karen T. McQuivey Charitable Remainder Unitrust Common Stock 2015-07-16 4 G 0 59586 8.5 D 0 D /s/ Raul McQuivey 2015-07-28