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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
We recognized total stock-based compensation expense in our Condensed Consolidated Statements of Operations as follows (in thousands):
Three months ended March 31,
20212020
Cost of goods sold
$727 $761 
Research and development
14,162 15,453 
General and administrative
9,009 7,997 
Impairment of assets and other costs for terminated program— 1,025 
Total stock-based compensation$23,898 $25,236 
The stock-based compensation expense reported in impairment of assets and other costs for terminated program resulted from executive severance. We accounted for this as a liability award as of March 31, 2020, which we reclassified into equity in three months ended June 30, 2020.
We issued stock-based awards and resulting shares of our common stock as follows (shares in thousands):
Three months ended March 31,
20212020
Options granted
121 49 
Weighted-average grant-date fair value of options granted
$10.82 $11.88 
RSUs granted
367 245 
Weighted-average grant-date fair value of RSUs granted
$20.63 $18.91 
Shares issued under equity compensation plans
2,199 1,358