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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |  |  |
Net loss | $ (43,433) |  | $ (144,348) |  | $ (134,612)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |  |  |
Depreciation and amortization | 75,478 |  | 59,424 |  | 46,320
Stock-based compensation expense | 154,292 |  | 145,988 |  | 119,296
Amortization of deferred commissions | 36,053 |  | 25,922 |  | 17,323
Other | 1,071 |  | (147) |  | (1,446)
Changes in operating assets and liabilities |  |  |  |  |
Accounts receivable, net | (18,875) |  | (34,304) |  | (12,415)
Deferred commissions | (48,041) |  | (43,962) |  | (37,561)
Operating lease right-of-use assets, net | 40,726 |  | 35,449 |  |
Prepaid expenses and other assets | 6,348 |  | (7,108) |  | (4,999)
Accounts payable | (12,301) |  | (100) |  | 1,655
Accrued expenses and other liabilities | 9,477 |  | (5,851) |  | (2,172)
Operating lease liabilities | (45,725) |  | (35,058) |  |
Deferred revenue | 41,764 |  | 48,808 |  | 63,932
Net cash provided by operating activities | 196,834 |  | 44,713 |  | 55,321
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |  |  |
Purchases of property and equipment, net of proceeds from sales | (9,052) |  | (5,444) |  | (14,806)
Capitalized internal-use software costs | (7,438) |  | (7,957) |  | (2,761)
Other | 107 |  | 105 |  | 1,416
Net cash used in investing activities | (16,383) |  | (13,296) |  | (16,151)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |  |
Proceeds from issuance of convertible debt, net of issuance costs paid of $8,625 | 336,375 |  |  |  |
Purchase of capped calls related to convertible debt | (27,773) |  |  |  |
Proceeds from borrowings, net of borrowing costs | 30,000 |  |  |  |
Principal payments on borrowings | (40,000) |  |  |  |
Proceeds from exercise of stock options | 10,261 |  | 5,965 |  | 16,326
Proceeds from issuances of common stock under employee stock purchase plan | 18,595 |  | 23,425 |  | 21,861
Employee payroll taxes paid related to net share settlement of restricted stock units | (48,761) |  | (43,328) |  | (43,824)
Principal payments of finance lease liabilities | (60,020) |  | (38,542) |  | (23,930)
Acquisition related contingent consideration |  |  | (936) |  |
Net cash provided by (used in) financing activities | 218,677 |  | (53,416) |  | (29,567)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash | 797 |  | (171) |  | (273)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 399,925 |  | (22,170) |  | 9,330
Cash, cash equivalents, and restricted cash, beginning of period | 195,586 |  | 217,756 |  | 208,426
Cash, cash equivalents, and restricted cash, end of period | 595,511 |  | 195,586 |  | 217,756
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |  |  |  |
Cash paid for interest, net of amounts capitalized | 7,481 |  | 5,549 |  | 2,585
Cash paid for income taxes, net of tax refunds | 1,472 |  | 2,835 |  | 1,600
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES: |  |  |  |  |
Increase in finance lease liabilities | 31,282 | [1] | 103,420 | [1] | 50,999
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH INFORMATION: |  |  |  |  |
Cash and cash equivalents, beginning of period | 195,586 |  | 217,518 |  | 208,076
Restricted cash, beginning of period |  |  | 238 |  | 350
Cash, cash equivalents, and restricted cash, beginning of period | 195,586 |  | 217,756 |  | 208,426
Cash and cash equivalents, end of period | 595,082 |  | 195,586 |  | 217,518
Restricted cash, end of period | 429 |  |  |  | 238
Cash, cash equivalents, and restricted cash, end of period | $ 595,511 |  | $ 195,586 |  | $ 217,756
[1] | Amounts disclosed for the year ended January 31, 2020 include the adoption impact of ASC Topic 842 on the opening balance sheet as of February 1, 2019

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- Definition The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
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- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
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