Net Loss per Share Attributable to Common Stock (Tables)

12 Months Ended

Dec. 31, 2020

Schedule of Basic and Diluted Earnings Per Share

The calculation of basic and diluted net loss per share attributable to common stock was as follows:


	Year Ended December 31,
	2020		2019		2018
Numerator:
Net loss	$	(18,527)	$	(80,805)	$	(41,978)
Dividends on convertible preferred stock	(4,454)		—		—
Net loss attributable to common stock—basic and diluted	$	(22,981)	$	(80,805)	$	(41,978)

Denominator:
Weighted average shares—basic and diluted(1)	98,574,529		91,583,533		85,669,039
Net loss per share attributable to common stock—basic and diluted	$	(0.23)	$	(0.88)	$	(0.49)

(1) Basic and diluted weighted average shares outstanding include (i) common stock earned but not yet issued related to share-based dividends on our convertible preferred stock, and (ii) restricted stock units whose settlement into common stock were deferred at the option of certain non-employee directors.

Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following outstanding shares of common stock equivalents were excluded from the computation of the diluted net loss per share attributable to common stock for the periods presented because their effect would have been anti-dilutive.


	Year Ended December 31,
	2020	2019	2018
2023 notes as if converted(1)	838,821	—	—
2025 notes as if converted	9,119,960	—	—
Convertible preferred stock as if converted	2,040,000	—	—
Stock options outstanding	5,733,738	7,792,181	9,435,349
Restricted stock units outstanding(2)	4,443,315	5,023,412	3,264,702
Total	22,175,834	12,815,593	12,700,051

(1) Includes $1,849 principal amount of 2023 notes with respect to which we received conversion requests by December 31, 2020. See Note 1.

(2) Excludes 16,428 restricted stock units whose settlement into common stock were deferred at the option of certain non-employee directors as of December 31, 2020.