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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income (loss) | $ 4,859 | $ (22,430)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |
Depreciation and amortization | 15,512 | 9,865
Amortization of discounts or premiums on marketable securities | 6,697 | 8,113
Amortization of issuance costs | 1,682 | 1,672
Amortization of deferred contract costs | 12,580 | 7,853
Stock-based compensation, net of amounts capitalized | 149,283 | 63,376
Non-cash lease expense | 9,686 | 8,061
Allowance for credit losses on accounts receivable | 1,931 | 527
Loss on disposal of property and equipment | 1,149 | 156
Changes in operating assets and liabilities: |  |
Accounts receivable, net | (38,100) | (24,908)
Deferred contract costs | (21,469) | (16,701)
Prepaid expenses and other current assets | (12,629) | (2,537)
Other assets | (1,752) | (932)
Accounts payable | 23,179 | 7,372
Accrued expenses and other liabilities | (4,310) | 7,308
Deferred revenue | 72,050 | 56,578
Net cash provided by operating activities | 220,348 | 103,373
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of marketable securities | (718,785) | (490,983)
Maturities of marketable securities | 516,754 | 570,206
Proceeds from sale of marketable securities | 2,006 | 41,715
Purchases of property and equipment | (15,501) | (4,227)
Capitalized software development costs | (14,780) | (12,392)
Cash paid for acquisition of businesses; net of cash acquired | (39,566) | (200,348)
Net cash used in investing activities | (269,872) | (96,029)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from exercise of stock options | 6,451 | 6,162
Proceeds from issuance of common stock under the employee stock purchase plan | 13,557 | 9,794
Employee payroll taxes paid related to net share settlement under the employee stock purchase plan | 0 | (245)
Repayments of convertible senior notes | (3) | 0
Net cash provided by financing activities | 20,005 | 15,711
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (2,871) | (662)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH | (32,390) | 22,393
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period | 274,463 | 228,711
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—End of period | 242,073 | 251,104
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: |  |
Cash paid for income taxes | 386 | 543
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |
Accrued property and equipment purchases | 1,078 | 914
Stock-based compensation included in capitalized software development costs | 6,840 | 4,212
Vesting of early exercised options | 33 | 500
Issuance of restricted shares of common stock for the acquisition of businesses | 7,608 | 51,501
Acquisition holdback | 5,473 | 1,195
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH WITHIN THE CONDENSED CONSOLIDATED BALANCE SHEETS TO THE AMOUNTS SHOWN IN THE STATEMENTS OF CASH FLOWS ABOVE: |  |
Cash and cash equivalents | 238,859 | 247,442
Restricted cash | 3,214 | 3,662
Total cash, cash equivalents and restricted cash | $ 242,073 | $ 251,104

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