Annual report pursuant to Section 13 and 15(d)

STATEMENTS OF STOCKHOLDERS' EQUITY

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STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
Total
Common Class A [Member]
Common Stock [Member]
Common Stock Issuable [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Balances at Dec. 31, 2016 $ 32,305,000 $ 1,000 $ 2,000 $ 3,919,000 $ 64,736,000 $ (36,353,000)
Balances (in Shares) at Dec. 31, 2016   7,000,000 17,426,876      
Stock-based compensation expense 3,117,000 $ 0 $ 0 0 3,117,000 0
Stock-based compensation expense (in Shares)   0 359,303      
Issuance of common shares - Founders Agreement 0 $ 0 $ 0 (3,919,000) 3,919,000 0
Issuance of common shares - Founders Agreement (in Shares)   0 721,699      
Common shares issuable - Founders Agreement 2,296,000 $ 0 $ 0 2,296,000 0 0
Common shares issuable - Founders Agreement (in Shares)   0 0      
Exercise of warrants 0 $ 0 $ 0 0 0 0
Exercise of warrants (in Shares)   0 4,551      
Net loss (22,677,000) $ 0 $ 0 0 0 (22,677,000)
Balances at Dec. 31, 2017 15,041,000 $ 1,000 $ 2,000 2,296,000 71,772,000 (59,030,000)
Balances (in Shares) at Dec. 31, 2017   7,000,000 18,512,429      
Issuance of common shares, net of offering costs - Public offering 20,828,000 $ 0 $ 1,000 0 20,827,000 0
Issuance of common shares, net of offering costs - Public offering (in Shares)   0 5,290,000      
Issuance of common shares, net of offering costs - At-the-market offering 7,747,000 $ 0 $ 0 0 7,747,000 0
Issuance of common shares, net of offering costs - At-the-market offering (in Shares)   0 1,841,774      
Stock-based compensation expense 1,994,000 $ 0 $ 0 0 1,994,000 0
Stock-based compensation expense (in Shares)   0 616,240      
Issuance of common shares - Founders Agreement 815,000 $ 0 $ 0 (2,296,000) 3,111,000 0
Issuance of common shares - Founders Agreement (in Shares)   0 770,128      
Common shares issuable - Founders Agreement 1,748,000 $ 0 $ 0 1,748,000 0 0
Common shares issuable - Founders Agreement (in Shares)   0 0      
Exercise of warrants 0 $ 0 $ 0 0 0 0
Exercise of warrants (in Shares)   0 45,583      
Net loss (36,367,000) $ 0 $ 0 0 0 (36,367,000)
Balances at Dec. 31, 2018 $ 11,806,000 $ 1,000 $ 3,000 $ 1,748,000 $ 105,451,000 $ (95,397,000)
Balances (in Shares) at Dec. 31, 2018   7,000,000 27,076,154