CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2019	Apr. 30, 2018
Cash flows from operating activities
Net loss	$ (33,240)	$ (26,555)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	2,323	817
Stock-based compensation	14,009	7,508
Amortization of debt discount and issuance costs	3,221	0
Amortization of finance right-of-use assets	994	0
Non-cash interest on finance lease liabilities	905	0
Deferred income taxes	(557)	4
Accretion of discount on short-term investments	(1,509)	(381)
Change in operating assets and liabilities:
Accounts receivable	10,960	14,018
Prepaid expenses and other current assets	(260)	(2,865)
Deferred commissions	(2,987)	(1,268)
Other long-term assets	32	(70)
Accounts payable	(268)	(639)
Deferred rent	0	472
Accrued liabilities	3,324	(1,967)
Deferred revenue	6,267	2,877
Net cash provided by (used in) operating activities	3,214	(8,049)
Cash flows from investing activities
Purchases of property and equipment	(389)	(367)
Proceeds from maturities of marketable securities	140,000	58,000
Purchases of marketable securities	(139,024)	0
Net cash provided by investing activities	587	57,633
Cash flows from financing activities
Proceeds from exercise of stock options, including early exercised stock options	6,437	288
Repurchase of early exercised stock options	(30)	(152)
Net cash provided by financing activities	6,407	136
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	19	(8)
Net increase in cash, cash equivalents and restricted cash	10,227	49,712
Cash, cash equivalents and restricted cash, beginning of period	148,347	62,427
Cash, cash equivalents and restricted cash, end of period	158,574	112,139
Cash paid during the period for:
Income taxes, net of refunds	735	118
Noncash investing and financing activities
Vesting of early exercised stock options	127	533
Purchases of property and equipment included in accounts payable and accrued liabilities	283	51
Construction in progress related to build-to-suit lease obligations	$ 0	$ 4,225

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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