MAMMOTH ENERGY SERVICES, INC.

For the period ended Jun 30, 2026. Filed Aug 7, 2026.

About this filing

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.

Jun 30, 2026 · Filed Aug 7, 2026

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

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Contents

Condensed Consolidated Statements of Cash Flows

	Six Months Ended June 30,
	2026	2025
(in thousands)
Cash flows from operating activities:
Net income	$4,427	$8,311
Less: Net income from discontinued operations, net of income taxes	940	47,081
Net income (loss) from continuing operations	3,487	(38,770)
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	8,104	4,910
Amortization of debt origination costs	1,432	354
Gains on disposal of assets, net	(5,316)	(4,549)
Gains from sale of aviation equipment	(700)	—
Gains from sales of equipment damaged or lost down-hole	(230)	—
Impairment of long-lived assets	—	31,669
Gain on marketable securities, net	(5,987)	—
Other	1,750	(1,839)
Changes in assets and liabilities:
Accounts receivable, net	(9,331)	(702)
Inventories	(6,960)	531
Other current assets	532	3,271
Accounts payable	187	(1,588)
Accrued expenses and other liabilities	1,273	(4,893)
Income taxes payable	1,535	3,440
Net cash used in operating activities from continuing operations	(10,224)	(7,754)
Net cash provided by (used in) operating activities from discontinued operations	200	(2,059)
Net cash used in operating activities	(10,024)	(9,813)
Cash flows from investing activities:
Purchases of property, plant and equipment	(55,669)	(27,334)
Business acquisitions, net of cash transferred	(5,748)	—
Proceeds from disposal of property, plant and equipment	8,383	4,942
Proceeds from sale of aviation equipment	8,500	—
Purchases of marketable securities	(7,929)	—
Distributions received from publicly traded limited partnerships	665	—
Proceeds from sale of marketable securities	6,736	—
Net cash used in investing activities from continuing operations	(45,062)	(22,392)
Net cash provided by investing activities from discontinued operations	4,581	111,258
Net cash (used in) provided by investing activities	(40,481)	88,866
Cash flows from financing activities:
Principal payments on finance leases and equipment financing notes	(136)	(253)
Common stock repurchased and retired	(534)	—
Net cash used in financing activities from continuing operations	(670)	(253)
Net cash used in financing activities from discontinued operations	—	(3,848)
Net cash used in financing activities	(670)	(4,101)
Effect of foreign exchange rate on cash	(111)	113
Net (decrease) increase in cash, cash equivalents and restricted cash	(51,286)	75,065
Cash, cash equivalents and restricted cash at beginning of period	114,124	82,326
Cash, cash equivalents and restricted cash at end of period	62,838	157,391
Less: Cash, cash equivalents and restricted cash of discontinued operations at end of period	55	88
Cash, cash equivalents and restricted cash of continuing operations	$62,783	$157,303

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (CONTINUED)

	Six Months Ended June 30,
	2026	2025
(in thousands)
Supplemental disclosure of cash flow information for continuing operations:
Cash paid for interest	$96	$381
Cash paid for income taxes, net of refunds received	$819	$395
Supplemental disclosure of non-cash transactions for continuing operations:
Purchases of property, plant and equipment included in accounts payable and accrued expenses	$2,086	$151
Right-of-use assets obtained for finance lease liabilities	$395	$—

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