Stock Options. Under the Company's 2015 Executive Incentive Plan, or the 2015 Plan, options to purchase shares of common stock may be granted to employees, directors and consultants. These options vest from date of grant to up to four years and expire ten years from the date of grant. Options may be exercised anytime during their term in accordance with the vesting/exercise schedule specified in the recipient’s stock option agreement and in accordance with the 2015 Plan provisions. .

				Weighted Average		Aggregate
	Shares			Exercise Price		Intrinsic Value
	(in thousands)			Per Share		(in thousands)
Balance as of January 31, 2019		1,691		$	6.39	$	14,755
Granted		89			15.49
Exercised		(23	)		1.87
Canceled		(42	)		12.71
Balance as of April 30, 2019		1,715		$	6.77	$	11,847
Vested and exercisable as of April 30, 2019		1,490		$	5.84	$	11,514

The aggregate intrinsic value of vested options exercised during the three months ended April 30, 2019 and 2018 was $0.3 million and $0.2 million, respectively. The weighted average grant date fair value of options granted during the three months ended April 30, 2019 and 2018 was $7.13 and $5.28 per share, respectively.

Restricted Stock Units. Under the Company’s 2015 Plan, RSUs may be granted to employees, non-employee board members and consultants. These RSUs vest ratably over a period ranging from one to four years and are subject to the participant’s continuing service to the Company over that period. Until vested, RSUs do not have the voting and dividend participation rights of common stock and the shares underlying the awards are not considered issued and outstanding.

	Shares (in thousands)			Weighted Average Grant-Date Fair Value Per Share
Balance as of January 31, 2019		1,925		$	10.49
Granted		848			15.47
Vested		(216	)		9.60
Canceled		(32	)		11.13
Balance as of April 30, 2019		2,525		$	12.23

Employee Stock Purchase Plan (“ESPP”). The ESPP allows eligible employees to purchase shares of common stock at a discount through payroll deductions of up to 15% of their eligible compensation (subject to plan limitations). The ESPP provides for a 24-month offering period comprised of four purchase periods of approximately six months. Employees are able to purchase shares at 85% of the lower of the fair market value of the Company’s common stock as of the first date or the ending date of each six-month offering period. The offering periods are scheduled to start on the first trading day on or after March 15 and September 15 of each year.

During the three months ended April 30, 2019 and 2018, employees purchased approximately 0.1 million and 0.2 million shares, respectively, at a weighted purchase price of $9.86 and $5.65 per share, respectively.