Shares of Mammoth Energy (NASDAQ: TUSK) soared more than 21% after reporting Q1 2026 results on May 11. Revenue came in at $22.0 million, up 90% year-over-year. Net income from continuing operations was $4.7 million, or $0.10 per diluted share — flipped from a $2.2 million loss a year ago.

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To be sure, an oilfield services company posting one good quarter doesn't reset the story.

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Except Mammoth isn't really an oilfield services company anymore.

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The Real Transformation Is in Aviation

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Mammoth's rental segment posted $13.0 million in revenue this quarter — up 584% year-over-year. That includes a single $6.5 million sale of an auxiliary power unit.

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The legacy oilfield segments, however, tell a different story:

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* Natural sand proppant revenue fell to $3.9 million from $6.7 million a year ago

* Average sand price dropped to $19.49 per ton from $21.49

* Drilling services contributed just $1.4 million

* Infrastructure services contributed $0.3 million — down from $0.7 million

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Worth noting: the company has now invested roughly $90 million in aviation assets, including an additional $25.7 million deployed after quarter-end to acquire six engines. That's not a side business. That's where the capital is going.

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Put simply: TUSK is becoming an aviation-rental company with a few oilfield service segments still attached.

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The Balance Sheet Is the Other Half of the Story

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Now, consider the following:

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* Quarter-end cash, marketable securities: $125.1 million

* Zero debt outstanding on the revolver

* Adjusted EBITDA: $1.9 million — the first positive quarter in eight quarters

* SG&A: $3.6 million, down from $5.7 million in Q4 2025

* Share repurchases: 187,000 shares at an average of $2.14 — the first buyback since the program was authorized in August 2023

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That last point is the tell. A company doesn't sit on a buyback authorization for nearly three years and then start using it unless management thinks the floor is in.

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The Risk Side

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The honest counter is in the numbers themselves. Operating loss was still $0.9 million this quarter. The positive EBITDA was supported by a $7.1 million unrealized gain on marketable securities and a $1.6 million favorable insurance adjustment, neither of which is operating earnings.

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Cash dropped from $125.1 million at quarter-end to $88.6 million by May 6 — partly capex ($11.7M in the quarter, $25.7M deployed after), partly buybacks, partly working capital.

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There's also the PREPA settlement payment. PREPA — the Puerto Rico Electric Power Authority — owes Mammoth a substantial sum tied to hurricane reconstruction work the company performed years ago. If the remaining proceeds don't arrive on schedule, it creates a meaningful cash flow risk. And sand prices, the key revenue driver for Mammoth's legacy proppant segment, remain soft — adding further pressure to a business the company is already moving away from.

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To be sure, this isn't a fully de-risked turnaround. It's quarter one.

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The Takeaway

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This is not an oilfield services story anymore. It's an aviation rental story funded by oilfield cash that's being recycled out the door.

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The next data points are the aviation utilization numbers, whether SG&A discipline holds, and whether the buyback pace accelerates. The Q2 print will tell you whether "inflection point" was the right word, or whether it was just a clean comp against a brutal Q4.

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Tread lightly.

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