Stock-Based Compensation

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Note 7 — Stock-Based Compensation

Total stock-based compensation expense was recognized in our Condensed Consolidated Statements of Operations as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Cost of goods sold	$	1,163	$	538	$	2,294	$	1,092
Research and development		12,991		4,620		25,084		9,217
General and administrative		6,506		2,941		13,230		5,974
Total stock-based compensation	$	20,660	$	8,099	$	40,608	$	16,283

During the three months ended June 30, 2018 and 2017, we granted 528,975 and 956,160 stock options, respectively, and these options had a weighted average grant-date fair value of $44.32 per share and $8.96 per share, respectively. During the six months ended June 30, 2018 and 2017, we granted 738,675 and 1,285,020 stock options, respectively, and these options had a weighted average grant-date fair value of $41.53 per share and $8.70 per share, respectively. During the three and six months ended June 30, 2018, we granted 396,240 and 406,240 RSUs, respectively. We did not grant any RSUs during the three and six months ended June 30, 2017.

As a result of stock issuances under our equity compensation plans, during the three months ended June 30, 2018 and 2017, we issued 1,750,908 and 1,130,164 shares of our common stock, respectively, and during the six months ended June 30, 2018 and 2017, we issued 4,605,724 and 2,648,769 shares of our common stock, respectively.