Exercise

price

Warrants Outstanding

Weighted average

 life of outstanding warrants in years

March 2019 Notes Warrants

$

70.00

74,390

4.3

June 2018 Notes Warrants

$

70.00

30,526

3.5

2017 PIPE Warrants

$

276.00

2,500

2.6

107,416

4.0