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Net Loss Per Share
 12 Months Ended
Dec. 31, 2020
Net Loss Per Share  
Net Loss Per Share

Note 3—Net Loss Per Share

Our potentially dilutive securities include potential common shares related to our stock options, warrant and unsecured convertible senior notes. Diluted earnings per share (Diluted EPS) considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect. Diluted EPS excludes the impact of potential common shares related to our stock options in periods in which the option exercise price is greater than the average market price of our common stock for the period.

Potentially dilutive securities excluded from Diluted EPS are as follows:

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Year Ended December 31, 

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2020

    

2019

    

2018

Outstanding options to purchase common stock

1,585,332

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2,664,841

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2,856,342

Outstanding warrants to purchase common stock

10,792

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16,153

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16,851

Total potentially dilutive shares excluded from loss per share

1,596,124

 

2,680,994

 

2,873,193

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