Years Ended

2017

2016

2015

Net loss

$

(11,377,618

)

$

(2,928,185

)

$

(2,771,067

)

Basic and diluted loss per common share

$

(0.26

)

$

(0.08

)

$

(0.08

)

Basic and diluted weighted average common shares outstanding (1):

44,598,879

37,294,321

35,877,341

Potentially dilutive securities (2):

Stock options

6,534,167

5,210,334

5,244,918

Warrants

470,444

470,444

423,007

Convertible debt

-

257,798

(1) Includes approximately 0.5 million, 0.4 million and 0.4 million nonvested restricted stock

for the years 2017, 2016 and 2015, respectively, which are participating securities that feature

voting and dividend rights.

(2) Excluded from the computation of loss per share as their impact is antidilutive.