Quarterly report pursuant to Section 13 or 15(d)

Common Stock (Tables)

v3.21.1
Common Stock (Tables)
3 Months Ended
Mar. 31, 2021
Equity [Abstract]  
Summary of Stock Options Activity

Stock option transactions and the number of stock options outstanding are summarized below:

 

 

 

Number of

 

 

Weighted

 

 

 

Optioned

 

 

Average

 

 

 

Common

 

 

Exercise

 

 

 

Shares

 

 

Price

 

Balance,  December 31, 2020

 

 

227,442

 

 

$

44.64

 

Granted

 

 

238,400

 

 

 

13.07

 

Balance,  March 31, 2021

 

 

465,842

 

 

$

28.48

 

Summary of Fair Value of Each Stock Award for Employees and Directors

The fair value of each stock award for employees and directors is estimated on the grant date and for consultants at each reporting period, using the Black-Scholes option-pricing model based on the weighted-average assumptions noted in the following table:

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2021

 

 

2020

 

Risk-free interest rates

 

 

0.59

%

 

 

1.51

%

Expected dividend yield

 

 

0

%

 

 

0

%

Expected life

 

 

6.01

 

 

 

6.02

 

Expected volatility

 

 

109.87

%

 

 

104.06

%

Summary of Share-Based Compensation Expense

The results for the periods set forth below included share-based compensation expense for stock options and restricted stock units in the following expense categories of the consolidated statements of loss (in thousands):

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2021

 

 

2020

 

Research and development

 

$

172

 

 

$

86

 

General and administrative

 

$

370

 

 

 

216

 

Total stock-based compensation

 

$

542

 

 

$

302

 

 

Summary of Restricted Stock Unit Award Activity

The following table summarizes our restricted stock unit award activity during the three months ended March 31, 2021:

 

 

 

 

 

 

 

Weighted

 

 

 

Number

 

 

Average

 

 

 

of

 

 

Grant Date

 

 

 

Shares

 

 

Fair Value

 

Balance,  December 31, 2020

 

 

231

 

 

$

580.00

 

Granted

 

 

53,250

 

 

 

13.09

 

Balance,  March 31, 2021

 

 

53,481

 

 

$

15.54

 

Summary of Outstanding Warrants

The following is a summary of outstanding warrants to purchase common stock at March 31, 2021:

 

 

 

Total

 

 

 

 

 

 

 

 

 

Outstanding

 

 

Exercise

 

 

 

 

 

and

 

 

price per

 

 

 

 

 

Exercisable

 

 

Share

 

 

Expiration Date

(1) Warrants issued in September 2017 financing

 

 

411

 

 

$

699.200

 

 

March 2023

(2) Warrants issued in June 2018 financing

 

 

114,100

 

 

$

80.000

 

 

June 2023

(3) Warrants issued in October 2018 financing

 

 

31,215

 

 

$

62.890

 

 

October 2023

(4) Warrants issued in May 2019 financing

 

 

60,000

 

 

$

90.000

 

 

May 2025

(5) Warrants issued in December 2019 financing

 

 

628,584

 

 

$

6.600

 

 

December 2024

(6) Warrants issued in April 2020 financing

 

 

182,461

 

 

$

7.240

 

 

April 2025

(7) Warrants issued in April 2020 financing

 

 

24,375

 

 

$

7.320

 

 

April 2025

(8) Warrants issued in April 2020 financing

 

 

25,270

 

 

$

7.590

 

 

April 2025

(9) Pre-Funded warrants issued in August 2020 financing

 

 

142,857

 

 

$

0.001

 

 

*

(10) Warrants issued in December 2020 financing

 

 

50,000

 

 

$

8.750

 

 

December 2025

 

*The pre-funded warrants do not have an expiration date.