Common Stock (Tables)

12 Months Ended

Dec. 31, 2016

Summary of Reserved Shares of Common Stock for Future Issuances

The Company had reserved shares of common stock for future issuances as follows:

	December 31,
	2016		2015
Issuance of equity based awards under stock plan		1,044,113		1,350,543
Issuance upon exercise of options under stock plan		4,452,700		3,240,969
Issuance of restricted stock units under stock plan		502,027		254,067
Total		5,998,840		4,845,579

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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