MAMMOTH ENERGY SERVICES, INC.

For the period ended Sep 30, 2026. Filed Oct 30, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Oct 30, 2026

TUSK$3.27+6.9%Stored close · as of Nov 10, 2026

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Contents

Condensed Consolidated Statements of Cash Flows

	Nine Months Ended September 30,
	2026	2025
(in thousands)
Cash flows from operating activities:
Net income (loss)	$4,553	$(4,304)
Less: Net income from discontinued operations, net of income taxes	770	47,114
Net income (loss) from continuing operations	3,783	(51,418)
Adjustments to reconcile net income (loss) from continuing operations to net cash used in operating activities:
Stock based compensation	—	412
Depreciation, depletion, amortization and accretion	14,661	7,661
Amortization of debt origination costs	1,488	531
Gains on disposal of assets, net	(5,628)	(2,675)
Gains from sale of aviation equipment	(700)	—
Gains from sales of equipment damaged or lost down-hole	(230)	(217)
Impairment of long-lived assets	—	31,669
Gain on marketable securities, net	(7,161)	(73)
Other	931	199
Changes in assets and liabilities:
Accounts receivable, net	(8,554)	1,321
Inventories	(10,677)	(70)
Other current assets	1,238	6,460
Accounts payable	(1,949)	(1,105)
Accrued expenses and other liabilities	469	(8,920)
Income taxes payable	2,466	2,066
Net cash used in operating activities from continuing operations	(9,863)	(14,159)
Net cash (used in) provided by operating activities from discontinued operations	(70)	5,076
Net cash used in operating activities	(9,933)	(9,083)
Cash flows from investing activities:
Purchases of property, plant and equipment	(97,513)	(44,633)
Business acquisitions, net of cash transferred	(5,805)	—
Proceeds from disposal of property, plant and equipment	9,566	5,465
Proceeds from sale of aviation equipment	8,500	—
Purchases of marketable securities	(7,929)	(12,660)
Distributions received from publicly traded limited partnerships	1,001	—
Proceeds from sale of marketable securities	9,228	—
Net cash used in investing activities from continuing operations	(82,952)	(51,828)
Net cash provided by investing activities from discontinued operations	4,581	110,421
Net cash (used in) provided by investing activities	(78,371)	58,593
Cash flows from financing activities:
Principal payments on finance leases and equipment financing notes	(199)	(371)
Common stock repurchased and retired	(534)	—
Net cash used in financing activities from continuing operations	(733)	(371)
Net cash used in financing activities from discontinued operations	—	(3,851)
Net cash used in financing activities	(733)	(4,222)
Effect of foreign exchange rate on cash	(39)	73
Net (decrease) increase in cash, cash equivalents and restricted cash	(89,076)	45,361
Cash, cash equivalents and restricted cash at beginning of period	114,124	82,326
Cash, cash equivalents and restricted cash at end of period	25,048	127,687
Less: Cash, cash equivalents and restricted cash of discontinued operations at end of period	30	59
Cash, cash equivalents and restricted cash of continuing operations	$25,018	$127,628

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)

	Nine Months Ended September 30,
	2026	2025
(in thousands)
Supplemental disclosure of cash flow information for continuing operations:
Cash paid for interest	$111	$551
Cash paid for income taxes, net of refunds received	$819	$625
Supplemental disclosure of non-cash transactions for continuing operations:
Purchases of property, plant and equipment included in accounts payable and accrued expenses	$660	$218
Right-of-use assets obtained for finance lease liabilities	$395	$—

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