Stock-based compensation (Tables) |
3 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2016 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Total Stock-Based Compensation Expense Related to Share-Based Awards Under the Pieris Plan |
Total stock-based compensation expense was recorded to operating expenses based upon the functional responsibilities of the individuals holding the respective options as follows:
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| Schedule of Weighted-Average Assumptions Used for Calculating Value of Options Granted |
Accordingly, the weighted-average fair value of the options granted during the three months ended March 31, 2016 and 2015 was $1.00 and $1.86, respectively based on the following assumptions:
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