Share-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Activity

A summary of stock option activity under the Company’s 2016 Plan is as follows:

	Number of Options
Options outstanding at March 31, 2020	7,723,302
Granted	1,679,338
Exercised	(496,078)
Forfeited	(422,505)
Options outstanding at September 30, 2020	8,484,057
Options vested and expected to vest at September 30, 2020	8,484,057
Options exercisable at September 30, 2020	4,360,312

Summary of Restricted Share Awards and Restricted Stock Units Activity

A summary of restricted stock award and restricted stock unit activity under the Company’s 2016 Plan is as follows:

	Number of Shares
Unvested balance at March 31, 2020	1,280,312
Granted	2,465,139
Vested	(212,079)
Forfeited	(265,974)
Unvested balance at September 30, 2020	3,267,398

Share-based Payment Arrangement, Performance Shares, Activity

A summary of performance stock unit activity under the Company's 2016 Plan is as follows:

	Number of Shares
Unvested balance at March 31, 2020	299,870
Granted	568,976
Vested	(109,360)
Forfeited	(37,415)
Unvested balance at September 30, 2020	722,071

Schedule of Share-based Compensation

Share-based compensation expense was as follows (in thousands):

	Three Months Ended September 30,				Six Months Ended September 30,
	2020		2019		2020		2019
Share-based compensation expense recognized as:
R&D expenses	$	3,725	$	3,618	$	7,749	$	6,166
G&A expenses	3,199		4,313		6,987		8,217
Total	$	6,924	$	7,931	$	14,736	$	14,383