X0306 4 2014-01-01 0000728331 SUTRON CORP STRN 0001381864 McQuivey Raul S 22400 DAVIS DRIVE STERLING VA 20164 1 1 1 0 Chairman, President, CEO Sutron Common Stock 2014-01-01 4 M 0 1500 0 A 875686 D Sutron Common Stock (Restricted Stock Unit) 2014-01-01 4 M 0 1500 D Sutron Common Stock 1500 0 D Sutron Common Stock (Restricted Stock Unit) 2014-01-01 4 D 0 1500 D Sutron Common Stock 1500 0 D Represents the conversion upon vesting of restricted stock units into common stock. On May 9, 2012, the reporting person was granted 6,000 restricted stock units, of which 1/4th of the shares subject to the restricted stock units vested on January 1, 2013. Such grant of restricte stock units is reported in Table II on a separate Form 4 filed with the Securities and Exchange Commission. Each restricted stock unit is the economic equivalent of one share of Sutron Corp common stock. On May 9, 2012, the reporting person was granted 6,000 restricted stock units, of which 1/4th of the shares subject to the restricted stock units vested on January 1, 2014. The common stock into which such vested restricted stock units converted on January 1, 2014 is reported in Table I on this Form 4. The initial grant of restricted stock units vests in blocks of 1/4 if certain performance and employment goals are met. On January 1, 2014, the disposition of 1500 restricted stock units representing 1/4 of the May 9, 2012 grant took place without vesting as performance goals required for vesting were not met. /s/ Raul S. McQuivey 2014-05-20