X0306 4 2014-03-27 0 0000728331 SUTRON CORP STRN 0001472885 Perlus Microcap Fund L.P. 5TH FLOOR, 37 ESPLANADE ST. HELIER JERSEY X0 JE1 2TR UNITED KINGDOM 0 0 1 0 0001600873 PERLUS Ltd 5TH FLOOR 37 ESPLANADE ST HELIER ST HELIER CHANNEL ISLANDS Y9 JE1 2T4 JERSEY 0 0 1 0 0001601068 PERLUS INVESTMENT MANAGEMENT LLP PLEDGDON LODGE BISHIOP'S STORTFORD X0 CM22 B6N UNITED KINGDOM 0 0 1 0 Common Stock 548099 D Common Stock 2014-03-27 4 J 0 5281 5.20 A 553380 D Common Stock 2014-03-28 4 J 0 12449 5.2392 A 565829 D Common Stock 11050 I (2) Common Stock 2014-03-27 4 J 0 398 5.20 A 11448 I (2) Common Stock 2014-03-28 4 J 0 937 5.2392 A 12385 I (2) (1) The Perlus Microcap Fund L.P. is the beneficial owner of the shares of common stock of Sutron Corporation (the "Shares"). Perlus Limited, the general partner of The Perlus Microcap Fund L.P., exercises sole voting power and shares dispositive control over the Shares with Perlus Investment Management LLP. Each of Perlus Limted and Perlus Investment Management LLP disclaims beneficial ownership of the Shares, except to the extent of any pecuniary interest therein. This report shall not be deemed an admission that either Perlus Limited or Perlus Investment Management is a beneficial owner of the Shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or any other purpose. (2) Perlus Investment Management LLP holds these shares in a managed account on behalf of its client. Perlus Investment Management LLP generates performance fees on this managed account and is deemed to have indirect pecuniary interest in these shares. Perlus Microcap Fund L.P., Perlus Limited and Perlus Investment Management LLP disclaim any beneficial ownership of these shares. /s/ Jim Boucherat 2014-03-31