9. Common Stock Warrants
As of March 31, 2020 and December 31, 2019, the following common stock warrants were outstanding:
Exercise Price
March 31,
December 31,
Issuance Date
Expiration Date
Balance Sheet Classification
per Share
2020
2019
February 2015
February 2020
Stockholders’ equity
$
66.20
—
9,063
February 2016
February 2021
15.40
8,249
May 2018
May 2028
23.69
6,332
March 2019
March 2029
14.71
4,845
19,426
28,489
No definition available.
Common stock warrant.