Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT)

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CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Common Shares [Member]
Additional Paid-in Capital
Accumulated Deficit
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Deficit
Preferred Stock
Convertible Preferred Stock [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Total
Balance at Dec. 31, 2020 $ 1 $ 207,698   $ (200,383) $ 597   $ 7,316
Balance (in shares) at Dec. 31, 2020 8,402,250       250,000    
Issuance of common stock upon warrant exercise   5,095         5,095
Issuance of common stock upon warrant exercise (in shares) 2,086,251            
Warrants issued in connection with warrant exercise   567         567
Convertible preferred stock dividend   (20)     $ 20   (20)
Stock-based compensation   254         254
Stock-based compensation (in shares) 643,700            
Release of vested restricted common stock (in shares) 352            
Net loss       (3,292)     (3,292)
Balance at Mar. 31, 2021 $ 1 213,594   (203,675) $ 617   9,920
Balance (in shares) at Mar. 31, 2021 11,132,553       250,000    
Balance at Dec. 31, 2020 $ 1 207,698   (200,383) $ 597   7,316
Balance (in shares) at Dec. 31, 2020 8,402,250       250,000    
Deemed dividend on exchange of convertible preferred stock for common stock             (1,192)
Net loss             (8,751)
Balance at Sep. 30, 2021 $ 2 228,128   (209,134)     18,996
Balance (in shares) at Sep. 30, 2021 15,803,940            
Balance at Dec. 31, 2020 $ 1 207,698   (200,383) $ 597   7,316
Balance (in shares) at Dec. 31, 2020 8,402,250       250,000    
Balance at Dec. 31, 2021 $ 2 228,578   (212,203)     16,377 [1]
Balance (in shares) at Dec. 31, 2021 15,819,059            
Balance at Mar. 31, 2021 $ 1 213,594   (203,675) $ 617   9,920
Balance (in shares) at Mar. 31, 2021 11,132,553       250,000    
Issuance of common stock upon warrant exercise   3,159         3,159
Issuance of common stock upon warrant exercise (in shares) 1,360,244            
Warrants issued in connection with warrant exercise   579         579
Convertible preferred stock dividend   (14)     $ 14   (14)
Exchange of convertible preferred stock for common stock   1,640     $ (631)   1,640
Exchange of convertible preferred stock for common stock (in shares) 250,000       (250,000)    
Warrants issued upon exchange of preferred stock for common stock   570         570
Deemed dividend on exchange of convertible preferred stock for common stock   (1,192)         (1,192)
Stock-based compensation   335         335
Stock-based compensation (in shares) 10,000            
Issuance of common stock to vendor   34         34
Issuance of common stock to vendor (in shares) 10,000            
Net loss       (3,398)     (3,398)
Balance at Jun. 30, 2021 $ 1 218,705   (207,073)     11,633
Balance (in shares) at Jun. 30, 2021 12,762,797            
Issuance of common stock upon warrant exercise   49         49
Issuance of common stock upon warrant exercise (in shares) 19,000            
Deemed dividend on exchange of convertible preferred stock for common stock             0
Stock-based compensation   349         349
Stock-based compensation (in shares) 320,800            
Release of vested restricted common stock (in shares) 201,343            
Registered direct offering, net of issuance costs $ 1 9,025         9,026
Registered direct offering, net of issuance costs (ins shares) 2,500,000            
Net loss       (2,061)     (2,061)
Balance at Sep. 30, 2021 $ 2 228,128   (209,134)     18,996
Balance (in shares) at Sep. 30, 2021 15,803,940            
Balance at Dec. 31, 2021 $ 2 228,578   (212,203)     16,377 [1]
Balance (in shares) at Dec. 31, 2021 15,819,059            
Stock-based compensation   480         480
Stock-based compensation (in shares) 1,067,400            
Release of vested restricted common stock (in shares) 5,668       0    
Restricted stock awards cancelled (in shares) (8,663)            
Net loss       (3,904)     (3,904)
Balance at Mar. 31, 2022 $ 2 229,058 $ 33 (216,074)   $ 33 12,986
Balance (in shares) at Mar. 31, 2022 16,883,464            
Balance at Dec. 31, 2021 $ 2 228,578   (212,203)     16,377 [1]
Balance (in shares) at Dec. 31, 2021 15,819,059            
Deemed dividend on exchange of convertible preferred stock for common stock             0
Net loss             (12,661)
Balance at Sep. 30, 2022 $ 2 230,181   (224,831)     5,352
Balance (in shares) at Sep. 30, 2022 17,119,353            
Balance at Mar. 31, 2022 $ 2 229,058 $ 33 (216,074)   $ 33 12,986
Balance (in shares) at Mar. 31, 2022 16,883,464            
Stock-based compensation   506         506
Stock-based compensation (in shares) 30,000            
Release of vested restricted common stock (in shares) 1,167            
Restricted stock awards cancelled (in shares) (14,809)            
Net loss       (4,108)     (4,108)
Balance at Jun. 30, 2022 $ 2 229,564   (220,182)     9,384
Balance (in shares) at Jun. 30, 2022 16,899,822            
Deemed dividend on exchange of convertible preferred stock for common stock             0
Stock-based compensation   526         526
Stock-based compensation (in shares) 177,500            
Release of vested restricted common stock (in shares) 59,931            
Restricted stock awards cancelled (in shares) (17,900)            
Issuance of warrants in connection with convertible promissory note   91         91
Net loss       (4,649)     (4,649)
Balance at Sep. 30, 2022 $ 2 $ 230,181   $ (224,831)     $ 5,352
Balance (in shares) at Sep. 30, 2022 17,119,353            
[1] The condensed consolidated balance sheet as of December 31, 2021 was derived from the audited consolidated balance sheet as of that date.