X0306 4 1999-04-06 0000728331 SUTRON CORP STRN 0001381864 McQuivey Raul S 22400 DAVIS DRIVE STERLING VA 20164 1 1 1 0 Chairman, President, CEO Common Stock 1999-04-06 4 J 0 360000 D 757026 D Common Stock 1999-04-06 4 J 0 360000 A 757026 I By Raul S. McQuivey Trust dated 3/24/1999 Common Stock 1999-04-06 4 J 0 359586 D 757026 D Common Stock 1999-04-06 4 J 0 359586 A 757026 I By Karen T. McQuivey Trust dated 3/24/1999 Common Stock 1999-04-06 4 J 0 6186 D 757026 D Common Stock 1999-04-06 4 J 0 6186 A 757026 I By Trust Transaction amount represents the transferring of shares held by Dr. McQuivey to either of two trusts (indicated in Table I) in which Mr. McQuivey and his wife are the trustees. Shares held through either of two trusts (indicated in Table I) in which Mr. McQuivey and his wife are the trustees. /s/ Raul S McQuivey 2014-08-05