Net Loss per Share Attributable to Portola Common Stockholders

9 Months Ended

Sep. 30, 2019

Net Loss per Share Attributable to Portola Common Stockholders

Basic net loss per share attributable to Portola Common Stockholders has been computed by dividing the net loss attributable to Portola Common Stockholders by the weighted-average number of shares of Common Stock outstanding during the period. Diluted net loss per share attributable to Portola Common Stockholders is calculated by dividing net loss attributable to Portola Common Stockholders by the weighted average number of shares of Common Stock and potential dilutive securities outstanding during the period. Since we were in a loss position for all periods presented, basic net loss per share attributable to Portola Common Stockholders is the same as diluted net loss per share attributable to Portola Common Stockholders as the inclusion of all potentially dilutive common shares would have been anti-dilutive.

The following outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share attributable to Portola Common Stockholders for the periods presented because including them would have been antidilutive:



	Nine Months Ended September 30,
	2019	2018
Stock options to purchase common stock	7,652,393	7,200,427
Performance stock options	578,467	147,335
Common stock warrants	1,500	1,500
Restricted stock units	1,253,581	809,014
Performance stock units	13,125	160,378
Employee stock purchase plan	18,754	19,062

Up to 500,000 shares of our common stock may be contingently issued, if certain regulatory and performance conditions are met under an agreement with a contract manufacturer, as described in Note 6, “Contract Manufacturing Agreements”, to these condensed consolidated financial statements.