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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018
Cash flows from operating activities: |  |  |  |  |  |
Net loss |  | $ (208,913) | $ (125,497) | [1] | $ (109,849) | [1]
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |  |  |  |  |
Stock-based compensation |  | 126,624 | 76,320 | [1] | 49,860 | [1]
Depreciation, amortization and accretion |  | 17,815 | 8,001 | [1] | 7,001 | [1]
Amortization of debt discount and issuance costs |  | 25,892 | 14,279 | [1] | 0 | [1]
Amortization of deferred commissions |  | 28,588 | 20,852 | [1] | 15,180 | [1]
Deferred income taxes |  | (2,253) | (765) | [1] | (534) | [1]
Write-off of intangible assets |  | 119 | 0 | [1] | 1,114 | [1]
Non-cash charitable contributions |  | 1,746 | 1,008 | [1] | 708 | [1]
Loss on early extinguishment of debt |  | 14,572 | 0 | [1] | 0 | [1]
Other, net |  | (130) | 640 | [1] | 719 | [1]
Changes in operating assets and liabilities: |  |  |  |  |  |
Accounts receivable |  | (37,515) | (39,682) | [1] | (18,321) | [1]
Deferred commissions |  | (61,224) | (41,342) | [1] | (26,986) | [1]
Prepaid expenses and other assets |  | (4,080) | (10,334) | [1] | (9,400) | [1]
Operating lease right-of-use assets |  | 12,951 | 17,239 | [1] | 7,776 | [1]
Accounts payable |  | 1,689 | (1,437) | [1] | (2,464) | [1]
Accrued compensation |  | 23,034 | 7,429 | [1] | 3,582 | [1]
Accrued expenses and other liabilities |  | 9,972 | 5,800 | [1] | 5,801 | [1]
Operating lease liabilities |  | (9,716) | (6,642) | [1] | (7,087) | [1]
Deferred revenue |  | 116,432 | 89,303 | [1] | 57,660 | [1]
Net cash provided by (used in) operating activities |  | 55,603 | 15,172 | [1] | (25,240) | [1]
Cash flows from investing activities: |  |  |  |  |  |
Capitalization of internal-use software costs |  | (3,888) | (2,851) | [1] | (5,431) | [1]
Purchases of property and equipment |  | (15,442) | (19,811) | [1] | (6,550) | [1]
Proceeds from sales of property and equipment |  | 0 | 740 | [1] | 0 | [1]
Purchases of securities available for sale and other |  | (999,387) | (631,488) | [1] | (129,086) | [1]
Proceeds from maturities and redemption of securities available for sale |  | 356,277 | 298,650 | [1] | 39,825 | [1]
Proceeds from sales of securities available for sale and other |  | 27,271 | 173,072 | [1] | 1,538 | [1]
Purchase of intangible assets |  | (8,589) | 0 | [1] | 0 | [1]
Payments for business acquisition, net of cash acquired |  | (44,283) | (15,632) | [1] | 0 | [1]
Net cash used in investing activities |  | (688,041) | (197,320) | [1] | (99,704) | [1]
Cash flows from financing activities: |  |  |  |  |  |
Proceeds from initial public offering, net of underwriters' discounts and commissions |  | 0 | 0 | [1] | 199,948 | [1]
Proceeds from issuance of convertible senior notes, net of issuance costs |  | 1,040,660 | 334,980 | [1] | 0 | [1]
Payments for repurchases of 2023 convertible senior notes |  | (224,414) | 0 | [1] | 0 | [1]
Purchases of hedges related to 2023 convertible senior notes |  | 0 | (80,040) | [1] | 0 | [1]
Proceeds from hedges related to 2023 convertible senior notes |  | 405,851 | 0 | [1] | 0 | [1]
Proceeds from issuance of warrants related to 2023 convertible senior notes |  | 0 | 52,440 | [1] | 0 | [1]
Payments for warrants related to 2023 convertible senior notes |  | (358,622) | 0 | [1] | 0 | [1]
Purchases of capped calls related to 2025 convertible senior notes |  | (74,094) | 0 | [1] | 0 | [1]
Payments of deferred offering costs |  | 0 | 0 | [1] | (4,038) | [1]
Proceeds from stock option exercises, net of repurchases |  | 45,363 | 36,861 | [1] | 33,646 | [1]
Proceeds from shares issued in connection with employee stock purchase plan |  | 18,767 | 13,727 | [1] | 8,369 | [1]
Other, net |  | (126) | (206) | [1] | (517) | [1]
Net cash provided by financing activities |  | 853,385 | 357,762 | [1] | 237,408 | [1]
Effects of changes in foreign currency exchange rates on cash, cash equivalents and restricted cash |  | (209) | (632) | [1] | 487 | [1]
Net increase in cash, cash equivalents and restricted cash |  | 220,738 | 174,982 | [1] | 112,951 | [1]
Cash, cash equivalents and restricted cash at beginning of year | [1] | 311,215 | 136,233 |  | 23,282 |
Cash, cash equivalents and restricted cash at end of year |  | 531,953 | 311,215 | [1] | 136,233 | [1]
Cash paid during the period for: |  |  |  |  |  |
Interest |  | 862 | 403 | [1] | 19 | [1]
Income taxes |  | 1,123 | 514 | [1] | 747 | [1]
Non-cash investing and financing activities: |  |  |  |  |  |
Issuance of common stock for repurchases of 2023 convertible senior notes |  | 380,406 | 0 | [1] | 0 | [1]
Vesting of early exercised common stock options |  | 370 | 763 | [1] | 1,335 | [1]
Issuance of common stock in connection with warrant exercises |  | 0 | 0 |  | 272 |
Common stock issued as charitable contribution |  | 1,746 | 1,008 | [1] | 708 | [1]
Operating lease right-of-use assets exchanged for lease obligations |  | 16,832 | 127,575 | [1] | 44,668 | [1]
Property and equipment acquired through tenant improvement allowances |  | 304 | 22,236 | [1] | 0 | [1]
Property and equipment and other accrued but not yet paid |  | 855 | 7,225 | [1] | 111 | [1]
Bonus settled through the issuance of common stock |  | 2,809 | 0 | [1] | 0 | [1]
Issuance of common stock in connection with business combination |  | 0 | 0 | [1] | 2,160 | [1]
Conversion of redeemable convertible preferred stock to common stock |  | 0 | 0 | [1] | 228,362 | [1]
Reconciliation of cash, cash equivalents, and restricted cash within the consolidated balance sheets to the amounts shown in the statements of cash flows above: |  |  |  |  |  |
Total cash, cash equivalents and restricted cash | [1] | $ 311,215 | $ 136,233 |  | $ 136,233 |
[1] | Adjusted for adoption of ASC 842. See Note 2.

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