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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Cash flows from operating activities: |  |
Net income | $ 175,418 | $ 97,106
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 156,183 | 135,457
Stock-based compensation | 93,260 | 61,883
(Benefit) provision for deferred income taxes | (10,467) | 4,925
Amortization of debt issuance costs | 1,682 | 1,098
Gain on investments | 0 | (174)
Other non-cash reconciling items, net | 2,062 | 21,602
Changes in operating assets and liabilities, net of effects of acquisitions: |  |
Accounts receivable | (736) | (25,251)
Prepaid expenses and other current assets | (26,016) | (26,009)
Accounts payable and accrued expenses | (66,949) | (97,263)
Deferred revenue | 34,316 | 36,449
Other current liabilities | 356 | 25,834
Other non-current assets and liabilities | (7,231) | (2,158)
Net cash provided by operating activities | 351,878 | 233,499
Cash flows from investing activities: |  |
Cash paid for business acquisition, net of cash acquired | 0 | (20,070)
Purchases of property and equipment | (93,751) | (141,700)
Capitalization of internal-use software development costs | (80,003) | (80,545)
Purchases of short- and long-term marketable securities | (170,019) | (134,191)
Proceeds from sales of short- and long-term marketable securities | 15,144 | 185,249
Proceeds from maturities and redemptions of short- and long-term marketable securities | 167,111 | 91,637
Other, net | 9,935 | (20,268)
Net cash used in investing activities | (151,583) | (119,888)
Cash flows from financing activities: |  |
Proceeds related to the issuance of common stock under stock plans | 20,310 | 21,257
Employee taxes paid related to net share settlement of stock awards | (109,333) | (29,894)
Repurchases of common stock | (125,449) | (348,600)
Other, net | (1,509) | (52)
Net cash used in financing activities | (215,981) | (357,289)
Effects of exchange rate changes on cash, cash equivalents and restricted cash | (4,013) | 2,297
Net decrease in cash, cash equivalents and restricted cash | (19,699) | (241,381)
Cash, cash equivalents and restricted cash at beginning of period | 490,470 | 543,022
Cash, cash equivalents and restricted cash at end of period | 470,771 | 301,641
Supplemental disclosures of cash flow information: |  |
Cash paid for income taxes, net of refunds received of $525 and $225 for the three months ended March 31, 2024 and 2023, respectively | 74,940 | 86,066
Cash paid for interest expense | 9,153 | 2,156
Cash paid for operating lease liabilities | 64,795 | 55,167
Non-cash activities: |  |
Operating lease right-of-use assets obtained in exchange for operating lease liabilities | 100,167 | 102,952
Purchases of property and equipment and capitalization of internal-use software development costs included in accounts payable and accrued expenses | 43,065 | 101,196
Capitalization of stock-based compensation | 26,596 | 14,611
Reconciliation of cash and cash equivalents, and restricted cash: |  |
Cash and cash equivalents | 467,717 | 298,800
Restricted cash | 3,054 | 2,841
Cash, cash equivalents and restricted cash | $ 470,771 | $ 301,641

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