CONVERTIBLE REDEEMABLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (Tables)

12 Months Ended

Jan. 31, 2017

Schedule of significant ranges of outstanding and exercisable options

	Options Outstanding				Options Vested and Exercisable
		Weighted
		Average	Weighted			Weighted
		Remaining	Average		Number	Average
	Number	Contractual	Exercise		Vested and	Exercise
Range of Exercise Prices	Outstanding	Life (in Years)	Prices		Exercisable	Prices
$0.20 - $0.35	658,108	6.67	$	0.31	524,042	$	0.32
$0.36 - $0.65	4,093,667	9.60	$	0.53	519,167	$	0.61
$0.66 - $1.09	734,054	7.51	$	0.91	402,698	$	0.90
$1.10 - $1.85	1,540,000	8.10	$	1.68	784,892	$	1.70
$1.86 - $3.00	100,000	8.25	$	3.00	93,749	$	3.00
	7,125,829	8.77	$	0.83	2,324,548	$	1.06

2014 Equity Incentive Plan

Stock option plan activity

			Weighted
			Average		Remaining	Aggregate
	Available for		Exercise		Contractual	Intrinsic
	Grant	Shares	Prices		Life	Value
						(in thousands)
Balance at February 1, 2015	1,043,000	2,689,252	$	0.91	8.58	$	5,625
Granted	(1,274,000)	1,274,000		2.25
Exercised	—	(676,769)		0.12
Cancelled	581,875	(581,875)		1.59
Balance at January 31, 2016	350,875	2,704,608	$	1.59	8.37	$	1,343
Shares authorized for issuance	4,000,000	—
Granted	(4,664,054)	4,664,054		0.55
Exercised	—	(131,000)		0.31
Cancelled prior to and upon termination of the 2014 Plan	587,249	(587,249)		1.76
Cancelled subsequent to termination of the 2014 Plan	—	(184,584)		1.92
Expired upon termination of the 2014 Plan	(21,691)	—
Balance at January 31, 2017	252,379	6,465,829	$	0.77	8.77	$	238
Vested and exercisable		2,121,007	$	1.02	7.39	$	91
Vested and expected to vest		5,891,697	$	0.79	8.70	$	217

Outside the 2014 Equity Incentive Plan

Stock option plan activity

		Weighted
		Average		Remaining
		Exercise		Contractual	Aggregate
	Shares	Prices		Life	Intrinsic Value
					(in thousands)
Balance as of January 31, 2016 and 2017	660,000	$	1.44	8.72	$	—
Vested and exercisable	203,541	$	1.44	8.69	$	—
Vested and expected to vest	537,277	$	1.44	8.71	$	—