Numerator:

Net loss

$

(4,535

)

$

(6,369

)

$

(24,774

)

$

(44,306

)

Deemed dividend

$

(635

)

$

—

$

(635

)

$

—

Net loss attributable to common stockholders for basic and diluted loss per share

$

(5,170

)

$

(6,369

)

$

(25,409

)

$

(44,306

)

Denominator:

Weighted average shares outstanding – basic

20,977

11,832

19,547

10,626

Potential common shares – options / warrants (treasury stock method)

—

Weighted average shares outstanding – diluted

20,977

11,832

19,547

10,626

Shares excluded (anti-dilutive)

9,813

2,474

8,997

1,468

Net loss per share attributable to common stockholders – basic and diluted

Basic

$

(0.25

)

$

(0.54

)

$

(1.30

)

$

(4.17

)

Diluted

$

(0.25

)

$

(0.54

)

$

(1.30

)

$

(4.17

)