Mammoth Puts a Lien on the Fleet — and Makes Its Revenue Line Irrelevant

A 27% EBITDA margin on a smaller top line, a fourth guidance ratchet in eight months, and the first $58 million borrowing against 44 aircraft, engines and APUs

TUSK · Earnings Call · 2026-10-30

The top line got smaller and the business got better

Mammoth's third quarter is a controlled demolition of its own income statement. Revenue of $21.3 million fell sequentially yet nearly doubled year over year — and adjusted EBITDA more than doubled to $5.8 million, with margin expanding to 27.2% from 10%. The reconciliation isn't clever accounting, it's mix. The rental segment threw off $5.0 million of segment EBITDA on $9.6 million of revenue, margins above 50%, as more of the aviation fleet went on lease. Sand earned $1.5 million of EBITDA on $5.2 million of revenue versus a $0.4 million loss last quarter — not because volumes grew (228,000 tons, flat) but because low-margin freight revenue fell away and realized price rose to $22.18 a ton from $21.36.“Adjusted EBITDA more than doubled sequentially to $5.8 million, and our adjusted EBITDA margin expanded to 27.2% from 10% in the second quarter.” — Mark Layton, Chief Financial Officer · 2026-10-30This is what a deliberate exit from lower margins looks like on a P&L: the sequential revenue decline came from Sand freight and a Q2 aviation asset sale that didn't repeat, and management called the resulting decline in revenue a feature rather than a bug. The uncomfortable footnote is accounting reality — the last filed quarter showed GAAP gross margin at essentially nil, because depreciation, depletion and amortization ran $6.6 million against $21.3 million of revenue. The 47% “gross margin before depreciation” is the operator's number; the accountant's number is net income of $0.3 million, or a penny a share.

An outlook that has only ever moved one direction

When 2026 guidance was set in March, mid-teens margins were a 2027 objective. In May came a commitment to positive full-year EBITDA; in August, an upgrade to double-digit margins. On Friday it moved again — mid-teens for 2026, full stop. Year to date the company has already printed 15%.“We now expect full year 2026 adjusted EBITDA margins in the mid-teens, putting us roughly a year ahead of the plan we laid out in March.” — Mark Layton, Chief Financial Officer · 2026-10-30The 2027 setup is more concrete than the usual aspirational language: management expects adjusted EBITDA to rise more than 40% off the 2026 base. The math is arithmetic, not heroics. Of 44 fleet assets, only 29 were earning at quarter end — a 66% deployment rate, up from 61% — leaving fifteen idle.“Our main operating focus is placing the remaining 15 assets on appropriate terms, and we expect the number of revenue-producing assets to continue growing.” — Bernard Lancaster, Chief Operating Officer · 2026-10-30Add roughly $24.5 million of actionable aviation pipeline and each placement lands on a cost base that barely moves, which is precisely why rental margins cleared 50%.

The end of the self-funded era

The genuinely new fact this quarter isn't a margin; it's a lien. Mammoth announced a $58 million senior secured term loan with Bank7 — $25 million of Term Loan A, $33 million of Term Loan B subject to conditions, both maturing October 2030 — secured by aviation assets, against a fleet that had been wholly unencumbered.

We have built the fleet to this point entirely with our own capital, including proceeds from divestitures. As we move into the next phase of growth, we now have the ability to combine operating cash flow with prudent asset-backed financing to continue scaling the business while maintaining balance sheet flexibility.
Mark Layton, Chief Financial Officer · 2026-10-30

For once, this was telegraphed rather than discovered. On the August call, pressed on the path to positive free cash flow, the CFO said the quiet part out loud:

But as you look at that business broadly, that's a revenue and cash flow stream that's well suited towards leverage. So we think there's further scale available in that particular business.
Mark Layton, Chief Financial Officer · 2026-08-07

He was right, and the sequence matters. The first nine months were funded by a balance sheet: no funded debt, $13.1 million cash, $24.5 million marketable securities, $37.6 million of liquidity, and a liabilities-to-assets ratio of 24.2%. The cost of that purity showed up in cash: free cash flow ran negative $51 million in the last filed quarter on $44 million of capital expenditure. Turning a 25%-35% target IRR into recurring lease income requires capital that self-funding cannot supply at scale — hence the facility.

What Mammoth stopped saying

The loudest signal is the silence. Two quarters ago the company's single highest-ranked theme was the fiber business; fiber is now the sharpest conceptual decliner in its keyword set, reduced to a single prepared-remarks line about broadband and communications infrastructure demand. The repurchase program was the second-ranked theme in Q2, and analyst Doug Garber spent four questions on it in August, drawing the admission that “the Board views the current share price is trading below where we see the value.” — Mark Layton, Chief Financial Officer · 2026-08-07On Friday, one sentence: “We did not repurchase shares during the quarter.” — Mark Layton, Chief Financial Officer · 2026-10-30With a $153 million market cap against $262.6 million of book value — about $5.46 a share — that is a striking omission, and the new term loan's covenants give the Board a fresh reason to keep liquidity at home. The data centers thread has also gone quiet after leading the keyword table two quarters back. That looks less like a strategy shift than a market one: across the tape, AI data-center language has gone from the year's biggest winner to a 30- and 90-day decliner, with the theme's constituents broadly lower. Mammoth didn't sell that story into a fading bid.

The engine behind the engines

The aviation pivot now leads Mammoth's own keyword table, with aviation leasing and aviation fleet occupying the top two slots — the first time the fleet, rather than an asset sale, has been the headline. And it is corroborated elsewhere in this week's reporting cluster: AerCap's engine business commentary, MTU's spare engine and GTF program cadence, Airbus order intake. Narrow-body engines and wide-body APUs, which is exactly what Mammoth added — two narrow-body engines, one regional engine, two wide-body APUs — are the tightest corner of that market. The offset sits in the segments nobody wants to talk about. Drilling utilization fell to 32% from 43%; Infrastructure ran crews just below 50% utilization and lost $0.9 million of EBITDA after its first full quarter with Mission Construction and BERE Rentals. Sand has a seasonally soft fourth quarter ahead, with management noting “we expect that to have a likely 10% to 15% impact on our production capability for the same amount of shift hours” — Mark Layton, Chief Financial Officer · 2026-10-30from the new screeners — a 2027 cost gift, not a Q4 one. Sand pricing into the Montney has held near $20 for 40-70 mesh since last autumn, when management said “we continue to see demand and pricing in that $20 range for 40-70” — Mark Layton, Chief Financial Officer · 2025-10-31.

The tape has already noticed

Mammoth's stock is up 16.9% over 90 days and sits 6.2% below its August peak of $3.39 — modest, until you frame it against a 92.2% drawdown from the 2018 high of $40.88. The valuation is a contradiction worth sitting with: price to sales at 2.6x, up more than 300% from two years ago, and price to net income at 219x — against 0.58x book. The market is paying for the lease book and discounting the legacy segments to scrap. Whether that holds depends on fifteen idle assets, a Bank7 drawdown, and a fourth quarter that management has already told you will be seasonally worse than the third.