Years Ended December 31,

2021

2020

Basic:

Net income (loss) available to common stockholders

$

(28,317)

$

(229,707)

Weighted average basic number of common shares outstanding

16,261

16,204

Basic net income (loss) per common share

$

(1.74)

$

(14.18)

Diluted:

Net income (loss) available to common stockholders

$

(28,317)

$

(229,707)

Weighted average basic number of common shares outstanding

16,261

16,204

Common stock equivalent shares representing shares issuable upon:

Exercise of Series A Warrants

Anti-dilutive

Exercise of Series B Warrants

Anti-dilutive

Exercise of Series C Warrants

Anti-dilutive

Exercise of stock options

Anti-dilutive

Vesting of restricted stock units

Anti-dilutive

Weighted average diluted number of common shares outstanding

16,261

16,204

Diluted net income (loss) per common share

$

(1.74)

$

(14.18)