InsiderClue
Stocks · Energy · Oil & Gas Field Services, NEC

MAMMOTH ENERGY SERVICES, INC.

TUSK Clue Score66
United States Fiscal year ends December CIK 0001679268
$2.82 +2.17% Close, 9 Oct 2026
Alert on the numbers Alert on insider trades
Price $2.82 −12.69% Close, 9 Oct 2026

Closing prices at the end of each trading day, from 14 Oct 2016. Not a live quote. Adjusted for share splits, so the line has no step at a split; dividends are not added back. P/E and P/FCF are the market value over the last full fiscal year's net income or free cash flow, as public on each day, so they step once a year when the annual report comes out. A hatched band marks a stretch with none: a year of net loss, or of cash burnt.

Revenue and profit

What the business sells, and what is left of it. Point at a year for the detail.
RevenueOperating incomeNet income
Fiscal year 2016Revenue230.6Operating income−34.6Net income−92.5EPS, diluted−2.94Fiscal year 2017Revenue691.5 +199.8%Operating income62.8Net income59.0EPS, diluted1.42Fiscal year 2018Revenue1,690.1 +144.4%Operating income394.5Net income236.0 +300.2%EPS, diluted5.24 +269.0%Fiscal year 2019Revenue625.0 −63.0%Operating income−128.4Net income−79.0 −133.5%EPS, diluted−1.76 −133.6%Fiscal year 2020Revenue313.1 −49.9%Operating income−148.7Net income−107.6EPS, diluted−2.36Fiscal year 2021Revenue229.0 −26.9%Operating income−123.0Net income−101.4EPS, diluted−2.18Fiscal year 2022Revenue362.1 +58.1%Operating income−16.4Net income−0.6EPS, diluted−0.01Fiscal year 2023Revenue309.5 −14.5%Operating income−16.7Net income−3.2EPS, diluted−0.07Fiscal year 2024Revenue45.6 −85.3%Operating income−120.4Net income−207.3EPS, diluted−4.31Fiscal year 2025Revenue44.3 −2.9%Operating income−57.4Net income4.6EPS, diluted0.10
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Revenue 230.6 691.5 1,690.1 625.0 313.1 229.0 362.1 309.5 45.6 44.3
Growth +199.8% +144.4% −63.0% −49.9% −26.9% +58.1% −14.5% −85.3% −2.9%
Operating income −34.6 62.8 394.5 −128.4 −148.7 −123.0 −16.4 −16.7 −120.4 −57.4
Net income −92.5 59.0 236.0 −79.0 −107.6 −101.4 −0.6 −3.2 −207.3 4.6
Growth +300.2% −133.5%
EPS, diluted −2.94 1.42 5.24 −1.76 −2.36 −2.18 −0.01 −0.07 −4.31 0.10
Growth +269.0% −133.6%

Margins

How much of each dollar of revenue it keeps. Point at a year for the detail.
Operating marginNet margin
Fiscal year 2016Operating margin−15.0%Net margin−40.1%Fiscal year 2017Operating margin9.1%Net margin8.5%Fiscal year 2018Operating margin23.3%Net margin14.0%Fiscal year 2019Operating margin−20.5%Net margin−12.6%Fiscal year 2020Operating margin−47.5%Net margin−34.4%Fiscal year 2021Operating margin−53.7%Net margin−44.3%Free cash flow margin−10.8%Fiscal year 2022Operating margin−4.5%Net margin−0.2%Free cash flow margin0.7%Fiscal year 2023Operating margin−5.4%Net margin−1.0%Free cash flow margin3.9%Fiscal year 2024Operating margin−263.9%Net margin−454.7%Free cash flow margin393.7%Fiscal year 2025Operating margin−129.7%Net margin10.4%Free cash flow margin−201.2%
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating margin −15.0% 9.1% 23.3% −20.5% −47.5% −53.7% −4.5% −5.4% −263.9% −129.7%
Net margin −40.1% 8.5% 14.0% −12.6% −34.4% −44.3% −0.2% −1.0% −454.7% 10.4%
Free cash flow margin n/a n/a n/a n/a n/a −10.8% 0.7% 3.9% 393.7% −201.2%

Cash flow

The cash the business makes, what it reinvests, and what it hands back. Point at a year for the detail.
Operating cash flowCapital expenditureFree cash flow
Fiscal year 2016Operating cash flow29.7Dividends paid0.0Fiscal year 2017Operating cash flow57.6Dividends paid0.0Fiscal year 2018Operating cash flow386.7Dividends paid−11.2Fiscal year 2019Operating cash flow−95.3Dividends paid−11.2Fiscal year 2020Operating cash flow7.0Dividends paid0.0Fiscal year 2021Operating cash flow−18.9Capital expenditure−5.8Free cash flow−24.7Dividends paid0.0Fiscal year 2022Operating cash flow15.3Capital expenditure−12.7Free cash flow2.5Fiscal year 2023Operating cash flow31.4Capital expenditure−19.4Free cash flow12.0 +374.1%Fiscal year 2024Operating cash flow180.7Capital expenditure−1.2Free cash flow179.5 +1,397.0%Fiscal year 2025Operating cash flow−18.6Capital expenditure−70.6Free cash flow−89.1 −149.6%
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating cash flow 29.7 57.6 386.7 −95.3 7.0 −18.9 15.3 31.4 180.7 −18.6
Capital expenditure n/a n/a n/a n/a n/a −5.8 −12.7 −19.4 −1.2 −70.6
Free cash flow n/a n/a n/a n/a n/a −24.7 2.5 12.0 179.5 −89.1
Growth +374.1% +1,397.0% −149.6%
Dividends paid 0.0 0.0 −11.2 −11.2 0.0 0.0 n/a n/a n/a n/a

Balance sheet

What it holds against what it owes, at each year end. Point at a year for the detail.
CashTotal debt
Fiscal year 2016Cash29.2Total debt0.0Net cash (debt)29.2Shareholders’ equity422.8Debt to equity0.00Fiscal year 2017Cash5.6Total debt99.9Net cash (debt)−94.3Shareholders’ equity507.8Debt to equity0.20Fiscal year 2018Cash67.6Total debt0.0Net cash (debt)67.6Shareholders’ equity754.1Debt to equity0.00Fiscal year 2019Cash5.9Total debt80.0Net cash (debt)−74.1Shareholders’ equity668.7Debt to equity0.12Fiscal year 2020Cash14.8Total debt82.5Net cash (debt)−67.7Shareholders’ equity563.3Debt to equity0.15Fiscal year 2021Cash9.9Total debt86.7Net cash (debt)−76.8Shareholders’ equity463.2Debt to equity0.19Fiscal year 2022Cash17.3Total debt83.5Net cash (debt)−66.2Shareholders’ equity462.6Debt to equity0.18Fiscal year 2023Cash16.6Total debt42.8Net cash (debt)−26.3Shareholders’ equity460.1Debt to equity0.09Fiscal year 2024Cash60.8Total debt0.0Net cash (debt)60.8Shareholders’ equity252.8Debt to equity0.00Fiscal year 2025Cash102.0Shareholders’ equity258.3
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Cash 29.2 5.6 67.6 5.9 14.8 9.9 17.3 16.6 60.8 102.0
Total debt 0.0 99.9 0.0 80.0 82.5 86.7 83.5 42.8 0.0 n/a
Net cash (debt) 29.2 −94.3 67.6 −74.1 −67.7 −76.8 −66.2 −26.3 60.8 n/a
Shareholders’ equity 422.8 507.8 754.1 668.7 563.3 463.2 462.6 460.1 252.8 258.3
Debt to equity 0.00 0.20 0.00 0.12 0.15 0.19 0.18 0.09 0.00 n/a

In millions of USD, except per-share figures and ratios. Fiscal years, as last filed with the SEC.

Financial statements FY2025 · 10-K

Balance sheet

In millions of USD, except per-share figures; shares in millions. Fiscal years ending December, each column as last filed with the SEC.
Click a line to chart it
Fiscal year FY2016 31 Dec 2016 FY2017 31 Dec 2017 FY2018 31 Dec 2018 FY2019 31 Dec 2019 FY2020 31 Dec 2020 FY2021 31 Dec 2021 FY2022 31 Dec 2022 FY2023 31 Dec 2023 FY2024 31 Dec 2024 FY2025 31 Dec 2025
Assets
29.2 5.6 67.6 5.9 14.8 9.9 17.3 16.6 60.8 102.0
21.2 243.7 337.5 363.1 393.1 407.6 456.5 447.2 40.7 28.9
6.1 17.8 21.3 17.5 12.0 8.4 8.9 12.7 6.8 4.1
242.1 351.0 436.7 352.8 251.3 n/a n/a n/a n/a n/a
88.7 99.8 101.2 67.6 12.6 11.7 11.7 9.2 9.2 0.0
502.4 867.2 1,073.1 952.4 824.6 720.9 724.7 698.5 384.0 334.9
Growth +72.6% +23.7% −11.2% −13.4% −12.6% +0.5% −3.6% −45.0% −12.8%
Liabilities
n/a n/a n/a 0.0 1.2 1.5 83.5 0.0 0.0 n/a
0.0 99.9 0.0 80.0 81.3 85.2 0.0 42.8 0.0 n/a
calc 0.0 99.9 0.0 80.0 82.5 86.7 83.5 42.8 0.0 n/a
79.6 359.4 319.0 283.6 261.2 257.7 262.1 238.4 131.2 76.6
Equity
−56.3 2.0 226.8 136.5 28.9 −72.5 −73.2 −76.3 −283.6 −279.0
422.8 507.8 754.1 668.7 563.3 463.2 462.6 460.1 252.8 258.3
Growth +20.1% +48.5% −11.3% −15.8% −17.8% −0.1% −0.5% −45.1% +2.2%
Per share and net cash
calc 29.2 −94.3 67.6 −74.1 −67.7 −76.8 −66.2 −26.3 60.8 n/a
37.5 44.6 44.9 45.1 45.8 46.7 47.3 47.9 48.1 48.4
calc 11.27 11.39 16.80 14.83 12.31 9.92 9.78 9.60 5.25 5.34

Lines marked calc are worked out here from filed figures; point at one for how.