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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Cash flows from operating activities |  |  |
Net income | $ 112,818 | $ 154,783 | $ 50,210
Adjustments to reconcile net income to net cash provided by operating activities |  |  |
Depreciation and amortization | 10,283 | 5,040 | 3,702
Deferred income taxes | 13,226 | (41,247) | 4,987
Stock-based compensation, net of amounts capitalized | 47,834 | 31,442 | 7,252
Non-cash lease expense | 2,027 | 1,159 | 2,433
Amortization of premium on marketable securities, net | 3,115 | 4,332 | 197
Loss on sale of marketable securities | 1,093 | 1,231 | 0
Amortization of deferred contract costs | 8,785 | 9,755 | 6,883
Gain on sale of business | 0 | 0 | (4,698)
Other | 1,454 | 410 | 403
Changes in operating assets and liabilities, net of effect of acquisition: |  |  |
Accounts receivable | (26,242) | (31,017) | (20,452)
Prepaid expenses and other assets | (3,448) | (9,089) | (1,833)
Deferred contract costs | (8,462) | (9,609) | (9,384)
Accounts payable, accrued expenses and other liabilities | (195) | 8,664 | 7,285
Deferred revenue | 17,527 | 1,828 | 38,571
Operating lease liabilities | (213) | (1,107) | (2,583)
Net cash provided by operating activities | 179,602 | 126,575 | 82,973
Cash flows from investing activities |  |  |
Cash paid for acquisition, net of cash acquired | (53,500) | 0 | (31,682)
Purchases of property and equipment | (1,701) | (1,912) | (245)
Internal-use software development costs | (4,483) | (3,785) | (4,365)
Purchases of marketable securities | (190,560) | (1,317,193) | (78,880)
Maturities of marketable securities | 83,139 | 47,919 | 40,537
Sales of marketable securities | 107,182 | 633,802 | 0
Proceeds from sale of business | 0 | 0 | 4,230
Other | 0 | 595 | (12)
Net cash used in investing activities | (59,923) | (640,574) | (70,417)
Cash flows from financing activities |  |  |
Proceeds from issuance of common stock upon initial public offering after deducting underwriting discounts and commissions | 0 | 553,905 | 0
Proceeds from issuance of common stock upon exercise of stock options and common stock warrants | 9,926 | 12,612 | 8,897
Proceeds from issuance of common stock in connection with the employee stock purchase plan | 4,759 | 1,395 | 0
Taxes paid related to net share settlement of equity awards | (3,822) | (817) | 0
Repurchase of common stock | (85,324) | (2,698) | (2,022)
Payments of deferred offering costs | 0 | (3,982) | (1,468)
Net cash provided by (used in) financing activities | (74,461) | 560,415 | 5,407
Net increase in cash and cash equivalents | 45,218 | 46,416 | 17,963
Cash and cash equivalents, beginning of period | 112,809 | 66,393 | 48,430
Cash and cash equivalents, end of period | 158,027 | 112,809 | 66,393
Supplemental disclosures of cash flow information |  |  |
Cash paid for taxes | 5,231 | 206 | 5,972
Non-cash financing and investing activities |  |  |
Conversion of redeemable convertible preferred stock to common stock | 0 | 81,458 | 0
Unpaid deferred offering costs | 0 | 0 | 782
Common stock issued in acquisition | 0 | 0 | 1,062
Capitalized stock-based compensation for internal-use software development costs | 865 | 497 | 195
Amounts held in escrow related to sale of business | 0 | 0 | 470
Fair value of contingent earn-out consideration included in purchase consideration | 21,134 | 0 | 0
Operating lease right-of-use assets obtained in exchange for operating lease liabilities | 14,759 | 1,151 | 0
Repurchase included in accrued expenses | $ 748 | $ 0 | $ 0

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