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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net income | $ 54,772 | $ 95,173
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 99,080 | 93,991
Amortization of debt discount and debt issuance costs | 2,390 | 148
Stock-based compensation | 6,851 | 7,672
Loss on investment securities | 13,367 | 4,034
Gain on reimbursement of drilling equipment | (9,403) | (7,494)
Other (gain) loss on sale of assets | 1,673 | (2,443)
Deferred income tax benefit | (9,923) | (7,829)
Other | (381) | 305
Change in assets and liabilities |  |
Accounts receivable | (6,404) | (28,931)
Inventories of materials and supplies | (9,500) | (7,191)
Prepaid expenses and other | 1,034 | (8,404)
Other noncurrent assets | (7,933) | (1,150)
Accounts payable | 4,492 | 23,865
Accrued liabilities | 8,915 | 19,022
Other noncurrent liabilities | 9,328 | (5,970)
Net cash provided by operating activities | 158,358 | 174,798
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Capital expenditures | (106,485) | (136,411)
Purchase of short-term investments | (95,956) | (46,250)
Purchase of long-term investments | (646) | (291)
Proceeds from sale of short-term investments | 242,920 | 57,956
Insurance proceeds from involuntary conversion | 698 | 0
Proceeds from asset sales | 12,120 | 11,929
Net cash provided by (used in) investing activities | 52,651 | (113,067)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Dividends paid | (25,021) | (42,294)
Debt issuance costs | (1,216) | 0
Payments for employee taxes on net settlement of equity awards | (6,913) | (8,820)
Payment of contingent consideration from acquisition of business | 0 | (250)
Share repurchases | 0 | (47,364)
Net cash used in financing activities | (33,150) | (98,728)
Net increase (decrease) in cash and cash equivalents and restricted cash | 177,859 | (36,997)
Cash and cash equivalents and restricted cash, beginning of period | 1,528,660 | 316,238
Cash and cash equivalents and restricted cash, end of period | 1,706,519 | 279,241
Cash paid/(received) during the period: |  |
Interest paid | 0 | 927
Income tax paid | 4,284 | 5,960
Income tax received | 0 | 0
Payments for operating leases | 3,822 | 3,262
Non-cash operating and investing activities: |  |
Change in accounts payable and accrued liabilities related to purchases of property, plant and equipment | $ 12,422 | $ (7,611)

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