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LOSS PER COMMON SHARE
 3 Months Ended
Mar. 31, 2019
LOSS PER COMMON SHARE
NOTE J—LOSS PER COMMON SHARE
Basic loss per common share has been computed by dividing net loss by the weighted-average number of shares of the Company’s common stock outstanding during the relevant period. Diluted loss per common share adjusts net loss and basic loss per common share for the effect of all potentially dilutive shares of the Company’s common stock. The calculations of basic and diluted loss per common share for the three month periods ended March 31, 2019 and 2018 are as follows:
 
 
 
Three Months Ended

March 31,
 
 
 
2019
 
 
2018
 
 
 
(in thousands, except per share amounts)
 
Net loss– basic and diluted
 
$
(4,867
)
 
$
(11,598
)
Weighted-average shares outstanding – basic and diluted
 
 
20,510
 
 
 
16,601
 
Basic and diluted loss per common share
 
$
(0.24
)
 
$
(0.70
)
The computation of diluted loss per common share for the three months ended March 31, 2019 and 2018 excludes 1,901,696 shares and 1,885,711 shares, respectively, related to options to purchase shares and other stock awards. These shares were excluded due to their antidilutive effects.