Inogen, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

The activity for stock options under the Company’s stock plans is as follows:

								Remaining
								weighted-
						Weighted-		average		Per share
						average		contractual		average
				Price per		exercise		terms		intrinsic
	Options			share		price		(in years)		value
Outstanding as of December 31, 2018		1,127,336		$0.75-$83.30		$	34.89		3.84	$	89.28
Granted		—			—		—
Exercised		(69,779	)	0.75-58.95			23.44
Forfeited		(20,959	)	38.54-44.19			43.07
Expired		—			—		—
Outstanding as of March 31, 2019		1,036,598		0.75-83.30			35.50		3.60		59.87
Vested and exercisable as of March 31, 2019		851,973		0.75-83.30			33.65		3.51		61.72
Vested and expected to vest as of March 31, 2019		1,024,590		$0.75-$83.30		$	35.40		3.59	$	59.97

Summary of Restricted Stock Activity

Stock Awards activity for the three months ended March 31, 2019 are summarized below:

										Weighted-
										average
										grant
				Performance						date fair
				and						value
Restricted stock units	Time-based			time-based			Total			per share
Unvested restricted stock units outstanding as of December 31, 2018		58,589			8,739			67,328		$	115.16
Granted		34,870			—			34,870			106.97
Vested		(7,453	)		(4,366	)		(11,819	)		103.71
Forfeited/canceled		(54	)		—			(54	)		91.52
Unvested restricted stock units outstanding as of March 31, 2019 ⁽¹⁾		85,952			4,373			90,325		$	113.51
Unvested and expected to vest restricted stock units outstanding as of March 31, 2019								85,159		$	113.82

										Weighted-
										average
										grant
				Performance						date fair
				and						value
Restricted stock awards	Time-based			time-based			Total			per share
Unvested restricted stock awards outstanding as of December 31, 2018		36,937			47,821			84,758		$	115.80
Granted		26,778			40,166			66,944			106.97
Vested		(6,319	)		(15,732	)		(22,051	)		115.73
Forfeited/canceled		(2,079	)		(3,839	)		(5,918	)		100.62
Unvested restricted stock awards outstanding as of March 31, 2019 ⁽¹⁾		55,317			68,416			123,733		$	112.15
Unvested and expected to vest restricted stock awards outstanding as of March 31, 2019								92,218		$	112.18

(1)	Outstanding restricted stock units and restricted stock awards are based on the maximum payout of the targeted number of shares.

Summary of Stock-based Compensation Expense

Stock-based compensation

Stock-based compensation expense recognized for the three months ended March 31, 2019 and March 31, 2018 was as follows:

	Three months ended
	March 31,
	2019		2018
Stock-based compensation expense by type of award:
Stock option plan awards	$	1,147	$	1,951
Restricted stock units and restricted stock awards		2,257		1,239
Employee stock purchase plan		182		191
Total stock-based compensation expense	$	3,586	$	3,381

For the three months ended March 31, 2019 and March 31, 2018, stock-based compensation expense recognized under ASC 718, included in cost of revenues, sales and marketing expense, general and administrative expense, and research and development expense was as follows:

	Three months ended
	March 31,
	2019		2018
Cost of revenue	$	285	$	273
Research and development		377		331
Sales and marketing		690		548
General and administrative		2,234		2,229
Total stock-based compensation expense	$	3,586	$	3,381