2020-05-14 13D/A Rosalind Advisors, Inc. 701,500 9.90 --- why are they here???
2020-02-14 13G/A Altium Capital Management Lp 134,069 9.90
2020-02-05 13G Hudson Bay Capital Management LP 4,351 9.99
2019-02-14 13G/A Ayrton Capital LLC 0 0.00
2018-02-14 13G/A Renaissance Technologies LLC 0 0.00
2017-02-06 13G/A INTRACOASTAL CAPITAL, LLC 39,478 1.80
2017-01-31 13G/A Empery Asset Management, LP 0 0.00
2015-07-27 13G KOPIN MITCHELL P 1,589,141 6.80
2015-03-10 13G/A BlackRock Inc. 508,211 4.20
2015-01-08 13G/A Sabby Management, LLC 196,100 2.02