Exhibit 99.1


mammotha061a.jpg


Mammoth Energy Services, Inc. Announces
Fourth Quarter and Full Year 2020 Operational and Financial Results


OKLAHOMA CITY, OKLAHOMA, February 25, 2021 - Mammoth Energy Services, Inc. (“Mammoth” or the “Company”) (NASDAQ: TUSK) today reported financial and operational results for the fourth quarter and full year ended December 31, 2020.

Financial Highlights for the Fourth Quarter and Full Year 2020:

Total revenue was $85.1 million for the three months ended December 31, 2020, up 21% from $70.5 million for the three months ended September 30, 2020 and up 26% from $67.6 million for the three months ended December 31, 2019. Total revenue was $313.1 million for the year ended December 31, 2020, down 50% from $625.0 million for the year ended December 31, 2019.

Net loss for the three months ended December 31, 2020 was $11.9 million, or $0.26 per fully diluted share, as compared to net income of $3.4 million, or $0.07 per fully diluted share, for the three months ended September 30, 2020 and a net loss of $60.8 million, or $1.35 per fully diluted share, for the three months ended December 31, 2019. Net loss for the year ended December 31, 2020 was $107.6 million, or $2.36 per fully diluted share, as compared to net loss of $79.0 million, or $1.76 per fully diluted share for the year ended December 31, 2019.

Adjusted EBITDA (as defined and reconciled below) was $7.5 million for the three months ended December 31, 2020, as compared to $22.1 million for the three months ended September 30, 2020 and ($10.3) million for the three months ended December 31, 2019. Adjusted EBITDA was $50.0 million for the year ended December 31, 2020, as compared to $77.3 million for the year ended December 31, 2019.

“The fourth quarter of 2020 clearly shows that Mammoth continues to execute on its transition to an industrial focused company, with approximately 66% of our revenues derived from the industrial sector during the quarter. Given the anticipated demand in the industrial sector, we are well positioned to continue to grow our industrial business rapidly over the coming years. We expect to be ready to ramp up our oilfield service offerings when oilfield demand, pricing and margins strengthen. The recent signing of an agreement by our engineering group allows for significant expansion and brings us one step closer to being a fully integrated Engineering, Procurement and Construction “EPC” company,” commented Arty Straehla, Chief Executive Officer of Mammoth.

Infrastructure Services

Mammoth's infrastructure services division contributed revenue of $55.9 million, or approximately 66% of Mammoth's total revenue, for the three months ended December 31, 2020, an increase of 28% from $43.6 million for the three months ended September 30, 2020 and an increase of 118% from $25.6 million for the three months ended December 31, 2019 reflecting a strong demand for our services.

The infrastructure segment contributed revenues of $155.2 million for the year ended December 31, 2020, down from $213.3 million for the year ended December 31, 2019.

Mammoth had approximately 115 crews operating in the continental United States throughout 2020.



Well Completion Services

Mammoth's well completion services division contributed revenue (inclusive of inter-segment revenue) of $12.7 million on 291 stages for the three months ended December 31, 2020, a decrease of 20% from $15.8 million on 449 stages for the three months ended September 30, 2020 and a decrease of 49% from $24.9 million on 989 stages for the three months ended December 31, 2019. On average, 0.6 of the Company's fleets were active for the three months ended December 31, 2020, compared to average utilization of 0.9 fleets during the three months ended September 30, 2020 and an average utilization of 1.7 fleets during the three months ended December 31, 2019.

The well completion division contributed revenues (inclusive of inter-segment revenues) of $88.3 million on 2,880 stages for the year ended December 31, 2020, down from $243.8 million on 5,378 stages for the year ended December 31, 2019. On average, 1.5 of the Company's fleets were active for the year ended December 31, 2020 compared to 2.4 fleets for the year ended December 31, 2019.
Natural Sand Proppant Services

Mammoth's natural sand proppant services division contributed revenue (inclusive of inter-segment revenue) of $11.8 million for the three months ended December 31, 2020, an increase of 97% from $6.0 million for the three months ended September 30, 2020 and an increase of 307% from $2.9 million for the three months ended December 31, 2019. The Company sold approximately 100,000 tons of sand during the three months ended December 31, 2020, an increase of 47% from approximately 68,000 tons sold during the three months ended September 30, 2020 and an increase of 32% from approximately 76,000 tons sold during the three months ended December 31, 2019. The Company's average sales price for the sand sold during the three months ended December 31, 2020 remained flat at $15.59 per ton, compared to the three months ended September 30, 2020 and decreased from the $19.95 per ton average sales price during the three months ended December 31, 2019.

The natural sand proppant division contributed revenues (inclusive of inter-segment revenues) of $34.4 million for the year ended December 31, 2020, as compared to $97.1 million for the year ended December 31, 2019. The Company sold 0.5 million tons of sand during the year ended December 31, 2020, a decline from 2.0 million tons of sand during the year ended December 31, 2019. The Company's average sales price for the sand sold during the year ended December 31, 2020 was $14.58 per ton, a decline from $29.70 per ton average sales price during the year ended December 31, 2019.

Drilling Services

Mammoth's drilling services division contributed revenue (inclusive of inter-segment revenue) of $0.6 million for the three months ended December 31, 2020, a decrease of 50% from $1.2 million for the three months ended September 30, 2020 and a decrease of 87% from $4.7 million for the three months ended December 31, 2019. The drilling services division contributed revenues of $7.8 million for the year ended December 31, 2020, as compared to $32.0 million for the year ended December 31, 2019.

As a result of market conditions, the Company temporarily shut down its contract land drilling operations beginning in December 2019 and its rig hauling operations beginning in April 2020.

Other Services

Mammoth's other services, including aviation, coil tubing, pressure control, flowback, cementing, acidizing, equipment rentals, crude oil hauling, full service transportation, remote accommodations, equipment manufacturing and infrastructure engineering and design services, contributed revenue (inclusive of inter-segment revenue) of $4.7 million for the three months ended December 31, 2020, unchanged from the $4.7 million for the three months ended September 30, 2020 and a decrease of 54% from $10.3 million for the three months ended December 31, 2019.

The Company's other services contributed revenues of $31.3 million for the year ended December 31, 2020, as compared to $88.6 million for the year ended December 31, 2019.

As a result of market conditions, the Company has temporarily shut down its cementing and acidizing operations as well as its flowback operations beginning in July 2019 and its coil tubing and full service transportation operations beginning in July 2020.

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Selling, General and Administrative Expenses

Selling, general and administrative (“SG&A”) expenses were $30.5 million for the three months ended December 31, 2020, as compared to $12.2 million for the three months ended September 30, 2020 and $10.3 million for the three months ended December 31, 2019.
Following is a breakout of SG&A expense (in thousands):
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
20202019202020202019
Cash expenses:
Compensation and benefits$3,738 $3,203 $3,449 $14,876 $19,364 
Professional services4,570 4,301 5,651 19,905 17,128 
Other(a)
2,256 2,010 2,163 8,828 10,300 
Total cash SG&A expense10,564 9,514 11,263 43,609 46,792 
Non-cash expenses:
Bad debt provision19,652 204 626 21,958 1,434 
Stock based compensation292 620 291 1,618 3,326 
Total non-cash SG&A expense19,944 824 917 23,576 4,760 
Total SG&A expense$30,508 $10,338 $12,180 $67,185 $51,552 
a.    Includes travel-related costs, information technology expenses, rent, utilities and other general and administrative-related costs.

SG&A expenses, as a percentage of total revenue, were 36% for the three months ended December 31, 2020, as compared to 17% for the three months ended September 30, 2020 and 15% for the three months ended December 31, 2019. SG&A expenses, as a percentage of total revenue, were 21% for the year ended December 31, 2020, as compared to 8% for the year ended December 31, 2019. The bad debt provision for the three months ended December 31, 2020, includes $19.4 million related to the voluntary petitions for relief filed on November 13, 2020, by Gulfport Energy Corporation and certain of its subsidiaries.

Liquidity
As of December 31, 2020, Mammoth had cash on hand of $14.8 million and outstanding borrowings under its revolving credit facility of $78.0 million. As of December 31, 2020, the Company had $38.7 million of available borrowing capacity under its revolving credit facility, after giving effect to $13.0 million of outstanding letters of credit. As of December 31, 2020, Mammoth had total liquidity of $53.5 million.

As of February 24, 2021, Mammoth had cash on hand of $21.4 million and outstanding borrowings under its revolving credit facility of $75.0 million. As of February 24, 2021, the Company had $41.7 million of available borrowing capacity under its revolving credit facility, after giving effect to $13.0 million of outstanding letters of credit.

Capital Expenditures

The following table summarizes Mammoth's capital expenditures by operating division for the periods indicated (in thousands):
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
20202019202020202019
Infrastructure services(a)
$37 $— $178 $258 $3,456 
Well completion services(b)
606 398 698 4,358 14,703 
Natural sand proppant services(c)
4 174 194 1,073 2,877 
Drilling services(d)
234 84 131 432 3,156 
Other(e)
7 215 324 716 11,569 
Total capital expenditures$888 $871 $1,525 $6,837 $35,761 
a.     Capital expenditures primarily for truck, tooling and other equipment for the periods presented.
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b.     Capital expenditures primarily for well completion and water transfer equipment for the periods presented.
c.    Capital expenditures primarily for maintenance for the periods presented.
d.    Capital expenditures primarily for upgrades to the Company's rig fleet for the periods presented.
e.    Capital expenditures primarily for equipment for the Company's rental businesses for the periods presented.

Explanatory Note Regarding Financial Information

The financial information contained in this release should be read in conjunction with the financial information contained in Mammoth’s Annual Reports filed on Form 10-K with the Securities and Exchange Commission (“SEC”), Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other filings with the SEC.

The Company's Chief Executive Officer and Chief Financial Officer comprise the Company's Chief Operating Decision Maker function (“CODM”). Segment information is prepared on the same basis that the CODM manages the segments, evaluates the segment financial statements and makes key operating and resource utilization decisions. Segment evaluation is determined on a quantitative basis based on a function of operating income (loss) as well as a qualitative basis, such as nature of the product and service offerings and types of customers.

As of December 31, 2020, the Company’s four reportable segments include infrastructure services (“Infrastructure”), well completion services (“Well Completion”), natural sand proppant services (“Sand”) and drilling services (“Drilling”). In 2019, the Company included Barracuda Logistics LLC, or Barracuda, in its Well Completion segment, Cobra Aviation Services LLC, or Cobra Aviation, Air Rescue Systems Corporation, or ARS, and Leopard Aviation LLC, or Leopard, in its Infrastructure segment and Mako Acquisitions LLC, or Mako, in its Drilling segment. Based on its assessment of FASB ASC 280, Segment Reporting, guidance at December 31, 2020, the Company changed its presentation in 2020 to move Barracuda to the Sand segment and Cobra Aviation, ARS, Leopard and Mako to the reconciling column titled “All Other”. Additionally, Mammoth changed the name of its pressure pumping segment to the well completion segment in 2020. The results for the year ended December 31, 2019 have been retroactively adjusted to reflect these changes.

Conference Call Information

Mammoth will host a conference call on Thursday, February 25, 2021 at 4:00 p.m. CDT (5:00 p.m. EDT) to discuss its fourth quarter and full year 2020 financial and operational results. The telephone number to access the conference call is 844-265-1561 in the U.S. and the international dial in is 216-562-0385. The conference ID for the call is 7435949. The conference call will also be webcast live on www.mammothenergy.com in the “Investors” section.

About Mammoth Energy Services, Inc.

Mammoth is an integrated, growth-oriented energy service company serving companies engaged in the construction and repair of the electric grid for private utilities, public investor-owned utilities and co-operative utilities through its energy infrastructure services and the exploration and development of North American onshore unconventional oil and natural gas reserves. Mammoth’s suite of services and products include: infrastructure services, well completion services, natural sand and proppant services, drilling services and other energy services.

For additional information about Mammoth, please visit its website at www.mammothenergy.com, where Mammoth routinely posts announcements, updates, events, investor information and presentations and recent news releases.

Investor Contact:
Don Crist
Director of Investor Relations
dcrist@mammothenergy.com
405-608-6048

Media Contact:
Peter Mirijanian
peter@pmpadc.com
(202) 464-8803

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Forward-Looking Statements and Cautionary Statements

This news release (and any oral statements made regarding the subjects of this release, including on the conference call announced herein) contains certain statements and information that may constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts that address activities, events or developments that Mammoth expects, believes or anticipates will or may occur in the future are forward-looking statements. The words “anticipate,” “believe,” “ensure,” “expect,” “if,” “intend,” “plan,” “estimate,” “project,” “forecasts,” “predict,” “outlook,” “aim,” “will,” “could,” “should,” “potential,” “would,” “may,” “probable,” “likely” and similar expressions, and the negative thereof, are intended to identify forward-looking statements. Without limiting the generality of the foregoing, forward-looking statements contained in this press release specifically include statements, estimates and projections regarding the Company's business outlook and plans, future financial position, liquidity and capital resources, operations, performance, acquisitions, returns, capital expenditure budgets, costs and other guidance regarding future developments. Forward-looking statements are not assurances of future performance. These forward-looking statements are based on management’s current expectations and beliefs, forecasts for the Company's existing operations, experience and perception of historical trends, current conditions, anticipated future developments and their effect on Mammoth, and other factors believed to be appropriate. Although management believes that the expectations and assumptions reflected in these forward-looking statements are reasonable as and when made, no assurance can be given that these assumptions are accurate or that any of these expectations will be achieved (in full or at all). Moreover, the Company's forward-looking statements are subject to significant risks and uncertainties, including those described in its Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other filings it makes with the SEC, including those relating to the Company's acquisitions and contracts, many of which are beyond the Company's control, which may cause actual results to differ materially from historical experience and present expectations or projections which are implied or expressed by the forward-looking statements. Important factors that could cause actual results to differ materially from those in the forward-looking statements include, but are not limited to: the severity and duration of the COVID-19 pandemic, related global and national health concerns and economic repercussions and the resulting negative impact on demand for our services; the current significant surplus in the supply of oil and the ability of the OPEC+ countries to agree on and comply with supply limitations; the duration and magnitude of the unprecedented disruption in the oil and gas industry currently resulting from the impact of the foregoing factors, which is negatively impacting our business; operational challenges relating to the COVID-19 pandemic and efforts to mitigate the spread of the virus, including logistical challenges, protecting the health and well-being of our employees, remote work arrangements, performance of contracts and supply chain disruptions; the failure to receive or delays in receiving governmental authorizations, approvals and/or payments; the outcome of ongoing government investigations and other legal proceedings, including those relating to the contracts awarded to the Company's subsidiary Cobra Acquisitions LLC by the Puerto Rico Electric Power Authority and contracts for our pressure pumping services and natural sand proppant services; the Company's inability to replace the prior levels of work in its business segments, including its infrastructure and well completion services segments; risks relating to economic conditions; the loss of or interruption in operations of one or more of Mammoth's significant suppliers or customers; the outcome of Gulfport Energy Corporation's chapter 11 bankruptcy filing and the treatment of Mammoth's contracts and claims in such proceeding; the effects of government regulation, permitting and other legal requirements; operating risks; the adequacy of capital resources and liquidity; weather; natural disasters; litigation; volatility in commodity markets; competition in the oil and natural gas and infrastructure industries; and costs and availability of resources.

Investors are cautioned not to place undue reliance on any forward-looking statement which speaks only as of the date on which such statement is made. We undertake no obligation to correct, revise or update any forward-looking statement after the date such statement is made, whether as a result of new information, future events or otherwise, except as required by applicable law.

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MAMMOTH ENERGY SERVICES, INC.
CONSOLIDATED BALANCE SHEETS


ASSETSDecember 31,December 31,
20202019
CURRENT ASSETS(in thousands)
Cash and cash equivalents$14,822 $5,872 
Short-term investment1,750 — 
Accounts receivable, net393,112 363,053 
Receivables from related parties28,461 7,523 
Inventories12,020 17,483 
Prepaid expenses13,825 12,354 
Other current assets758 695 
Total current assets464,748 406,980 
Property, plant and equipment, net251,262 352,772 
Sand reserves65,876 68,351 
Operating lease right-of-use assets20,179 43,446 
Intangible assets, net - customer relationships408 583 
Intangible assets, net - trade names4,366 5,205 
Goodwill12,608 67,581 
Other non-current assets5,115 7,467 
Total assets$824,562 $952,385 
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Accounts payable$40,316 $39,220 
Payables to related parties3 526 
Accrued expenses and other current liabilities44,408 40,754 
Current operating lease liability8,618 16,432 
Current portion of long-term debt1,165 — 
Income taxes payable34,088 33,465 
Total current liabilities128,598 130,397 
Long-term debt81,338 80,000 
Deferred income tax liabilities24,741 36,873 
Long-term operating lease liability11,377 27,102 
Asset retirement obligation4,746 4,241 
Other liabilities10,435 5,031 
Total liabilities261,235 283,644 
COMMITMENTS AND CONTINGENCIES
EQUITY
Equity:
Common stock, $0.01 par value, 200,000,000 shares authorized, 45,769,283 and 45,108,545 issued and outstanding at December 31, 2020 and 2019458 451 
Additional paid in capital537,039 535,094 
Retained earnings28,895 136,502 
Accumulated other comprehensive loss(3,065)(3,306)
Total equity563,327 668,741 
Total liabilities and equity$824,562 $952,385 


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MAMMOTH ENERGY SERVICES, INC.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME



Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
20202019202020202019
(in thousands, except per share amounts)
REVENUE
Services revenue$65,079 $57,950 $55,279 $234,081 $452,594 
Services revenue - related parties7,862 6,714 8,565 43,091 102,624 
Product revenue10,234 1,724 4,815 28,404 42,105 
Product revenue - related parties1,875 1,249 1,875 7,500 27,689 
Total revenue85,050 67,637 70,534 313,076 625,012 
COST AND EXPENSES
Services cost of revenue (exclusive of depreciation, depletion, amortization and accretion of $19,780, $25,872, $26,416, $85,481 and $102,901, respectively, for the three months ended December 31, 2020, December 31, 2019 and September 30, 2020 and years ended December 31, 2020 and 2019)51,260 68,599 41,445 205,657 451,206 
Services cost of revenue - related parties (exclusive of depreciation, depletion, amortization and accretion of $0, $0, $0, $0 and $0, respectively, for the three months ended December 31, 2020, December 31, 2019 and September 30, 2020 and years ended December 31, 2020 and 2019)90 633 131 418 4,770 
Product cost of revenue (exclusive of depreciation, depletion, amortization and accretion of $2,387, $2,625, $2,697, $9,758 and $14,039, respectively, for the three months ended December 31, 2020, December 31, 2019 and September 30, 2020 and years ended December 31, 2020 and 2019)4,083 6,337 4,353 25,946 87,812 
Selling, general and administrative30,364 9,978 11,979 66,427 49,705 
Selling, general and administrative - related parties144 360 201 758 1,847 
Depreciation, depletion, amortization and accretion22,187 28,521 23,132 95,317 117,033 
Impairment of goodwill— 30,470 — 54,973 33,664 
Impairment of other long-lived assets— 4,010 — 12,897 7,358 
Total cost and expenses108,128 148,908 81,241 462,393 753,395 
Operating loss(23,078)(81,271)(10,707)(149,317)(128,383)
OTHER INCOME (EXPENSE)
Interest expense, net(1,191)(1,486)(1,098)(5,397)(4,958)
Other, net9,559 7,272 7,943 33,048 42,216 
Other, net - related parties(341)— 1,099 1,890 — 
Total other income8,027 5,786 7,944 29,541 37,258 
Loss before income taxes(15,051)(75,485)(2,763)(119,776)(91,125)
Benefit for income taxes(3,190)(14,706)(6,193)(12,169)(12,081)
Net (loss) income $(11,861)$(60,779)$3,430 $(107,607)$(79,044)
OTHER COMPREHENSIVE INCOME (LOSS)
Foreign currency translation adjustment, net of tax of ($170), $69, ($95), ($54) and ($203), respectively, for the three months ended December 31, 2020, December 31, 2019 and September 30, 2020 and years ended December 31, 2020 and 2019663 (213)324 241 775 
Comprehensive (loss) income $(11,198)$(60,992)$3,754 $(107,366)$(78,269)
Net (loss) income per share (basic)$(0.26)$(1.35)$0.07 $(2.36)$(1.76)
Net (loss) income per share (diluted)$(0.26)$(1.35)$0.07 $(2.36)$(1.76)
Weighted average number of shares outstanding (basic)45,769 45,092 45,764 45,644 45,011 
Weighted average number of shares outstanding (diluted) 45,769 45,092 46,571 45,644 45,011 
Dividends declared per share$— $— $— $— $0.25 

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MAMMOTH ENERGY SERVICES, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS


Years Ended December 31,
December 31,
20202019
(in thousands)
Cash flows from operating activities:
Net loss$(107,607)$(79,044)
Adjustments to reconcile net loss to cash provided by (used in) operating activities:
Stock based compensation1,952 4,177 
Depreciation, depletion, accretion and amortization95,317 117,033 
Amortization of coil tubing strings359 1,641 
Amortization of debt origination costs831 326 
Bad debt expense21,958 1,434 
(Gain) loss on disposal of property and equipment(1,379)55 
Impairment of goodwill54,973 33,664 
Impairment of other long-lived assets12,897 7,358 
Inventory obsolescence— 1,349 
Deferred income taxes(12,186)(42,639)
Other(143)(986)
Changes in assets and liabilities:
Accounts receivable, net(32,621)(27,006)
Receivables from related parties(40,333)3,641 
Inventories5,103 830 
Prepaid expenses and other assets1,996 (1,040)
Accounts payable2,526 (25,968)
Payables to related parties(522)156 
Accrued expenses and other liabilities3,198 (18,800)
Income taxes payable648 (71,499)
Net cash provided by (used in) operating activities6,967 (95,318)
Cash flows from investing activities:
Purchases of property and equipment(6,761)(35,417)
Purchases of property and equipment from related parties(76)(344)
Contributions to equity investee(490)(680)
Proceeds from disposal of property and equipment6,782 3,217 
Purchase of short-term investment(1,750)— 
Net cash used in investing activities(2,295)(33,224)
Cash flows from financing activities:
Borrowings from lines of credit35,351 156,000 
Repayments of lines of credit(32,800)(76,000)
Proceeds from sale leaseback transaction5,000 — 
Payments on sale leaseback transaction(268)— 
Dividends paid— (11,219)
Principal payments on financing leases and equipment financing notes(1,966)(2,079)
Debt issuance costs(1,051)— 
Net cash provided by financing activities4,266 66,702 
Effect of foreign exchange rate on cash12 87 
Net change in cash and cash equivalents8,950 (61,753)
Cash and cash equivalents at beginning of period5,872 67,625 
Cash and cash equivalents at end of period$14,822 $5,872 
Supplemental disclosure of cash flow information:
Cash paid for interest$4,729 $4,741 
Cash (recovered) paid for income taxes$(617)$110,848 
Supplemental disclosure of non-cash transactions:
Purchases of property and equipment included in accounts payable$1,312 $2,303 
Right-of-use assets obtained for financing lease liabilities$2,431 $3,721 

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MAMMOTH ENERGY SERVICES, INC.
SEGMENT INCOME STATEMENTS
(in thousands)

Three months ended December 31, 2020InfrastructureWell CompletionSandDrillingAll OtherEliminationsTotal
Revenue from external customers$55,934 $12,653 $11,843 $580 $4,040 $— $85,050 
Intersegment revenues— 44 — 23 670 (737)— 
Total revenue55,934 12,697 11,843 603 4,710 (737)85,050 
Cost of revenue, exclusive of depreciation, depletion, amortization and accretion41,265 5,194 4,110 1,165 3,699 — 55,433 
Intersegment cost of revenues127 426 — — 184 (737)— 
Total cost of revenue41,392 5,620 4,110 1,165 3,883 (737)55,433 
Selling, general and administrative7,057 17,691 4,070 373 1,317 — 30,508 
Depreciation, depletion, amortization and accretion6,957 7,066 2,390 2,224 3,550 — 22,187 
Operating income (loss)528 (17,680)1,273 (3,159)(4,040)— (23,078)
Interest expense, net685 273 95 5 133 — 1,191 
Other (income) expense, net (8,355)170 86 23 (1,142)— (9,218)
Income (loss) before income taxes$8,198 $(18,123)$1,092 $(3,187)$(3,031)$— $(15,051)

Three months ended December 31, 2019InfrastructureWell CompletionSandDrillingAll OtherEliminationsTotal
Revenue from external customers$25,601 $24,515 $2,946 $4,637 $9,938 $— $67,637 
Intersegment revenues— 414 — 14 407 (835)— 
Total revenue25,601 24,929 2,946 4,651 10,345 (835)67,637 
Cost of revenue, exclusive of depreciation, depletion, amortization and accretion29,925 20,354 6,162 6,927 12,201 — 75,569 
Intersegment cost of revenues— 339 — 206 290 (835)— 
Total cost of revenue29,925 20,693 6,162 7,133 12,491 (835)75,569 
Selling, general and administrative5,097 1,428 792 1,063 1,958 — 10,338 
Depreciation, depletion, amortization and accretion7,662 9,985 2,628 3,361 4,885 — 28,521 
Impairment of goodwill— 23,423 2,684 — 4,363 — 30,470 
Impairment of other long-lived assets— — — 2,955 1,055 — 4,010 
Operating loss(17,083)(30,600)(9,320)(9,861)(14,407)— (81,271)
Interest expense, net660 304 48 217 257 — 1,486 
Other (income) expense, net(7,236)574 — 14 (624)— (7,272)
Loss before income taxes$(10,507)$(31,478)$(9,368)$(10,092)$(14,040)$— $(75,485)

Three months ended September 30, 2020InfrastructureWell CompletionSandDrillingAll OtherEliminationsTotal
Revenue from external customers$43,582 $15,738 $6,031 $1,193 $3,990 $— $70,534 
Intersegment revenues— 27 — 11 687 (725)— 
Total revenue43,582 15,765 6,031 1,204 4,677 (725)70,534 
Cost of revenue, exclusive of depreciation, depletion, amortization and accretion28,883 6,510 4,154 1,955 4,427 — 45,929 
Intersegment cost of revenues162 449 — — 114 (725)— 
Total cost of revenue29,045 6,959 4,154 1,955 4,541 (725)45,929 
Selling, general and administrative7,227 1,721 1,056 382 1,794 — 12,180 
Depreciation, depletion, amortization and accretion7,294 7,189 2,700 2,294 3,655 — 23,132 
Operating income (loss)16 (104)(1,879)(3,427)(5,313)— (10,707)
Interest expense, net623 253 70 60 92 — 1,098 
Other (income) expense, net(8,375)(1,156)1,792 20 (1,323)— (9,042)
Income (loss) before income taxes$7,768 $799 $(3,741)$(3,507)$(4,082)$— $(2,763)
9
MAMMOTH ENERGY SERVICES, INC.
SEGMENT INCOME STATEMENTS
(in thousands)

Year ended December 31, 2020InfrastructureWell CompletionSandDrillingAll OtherEliminationsTotal
Revenue from external customers$155,241 $87,201 $34,265 $7,746 $28,623 $— $313,076 
Intersegment revenues— 1,124 95 39 2,716 (3,974)— 
Total revenue155,241 88,325 34,360 7,785 31,339 (3,974)313,076 
Cost of revenue, exclusive of depreciation, depletion, amortization and accretion122,046 45,647 25,955 10,757 27,616 — 232,021 
Intersegment cost of revenues323 1,836 — 152 1,663 (3,974)— 
Total cost of revenue122,369 47,483 25,955 10,909 29,279 (3,974)232,021 
Selling, general and administrative26,058 23,039 7,807 3,149 7,132 — 67,185 
Depreciation, depletion, amortization and accretion29,373 30,411 9,771 10,039 15,723 — 95,317 
Impairment of goodwill— 53,406 — — 1,567 — 54,973 
Impairment of other long-lived assets— 4,203 — 326 8,368 — 12,897 
Operating loss(22,559)(70,217)(9,173)(16,638)(30,730)— (149,317)
Interest expense, net2,775 1,130 312 454 726 — 5,397 
Other (income) expense, net (32,437)(2,274)1,839 (227)(1,839)— (34,938)
Income (loss) before income taxes$7,103 $(69,073)$(11,324)$(16,865)$(29,617)$— $(119,776)

Year ended December 31, 2019InfrastructureWell CompletionSandDrillingAll OtherEliminationsTotal
Revenue from external customers$210,691 $241,951 $67,267 $31,728 $73,375 $— $625,012 
Intersegment revenues2,573 1,851 29,796 236 15,232 (49,688)— 
Total revenue213,264 243,802 97,063 31,964 88,607 (49,688)625,012 
Cost of revenue, exclusive of depreciation, depletion, amortization and accretion160,449 174,816 87,637 35,925 84,961 — 543,788 
Intersegment cost of revenues12,820 31,727 15 1,028 4,158 (49,748)— 
Total cost of revenue173,269 206,543 87,652 36,953 89,119 (49,748)543,788 
Selling, general and administrative23,235 10,889 5,006 4,177 8,245 — 51,552 
Depreciation, depletion, amortization and accretion30,349 40,159 14,050 13,143 19,332 — 117,033 
Impairment of goodwill— 23,423 2,684 — 7,557 — 33,664 
Impairment of other long-lived assets— — — 2,955 4,403 — 7,358 
Operating loss(13,589)(37,212)(12,329)(25,264)(40,049)60 (128,383)
Interest expense, net1,674 1,228 193 862 1,001 — 4,958 
Other (income) expense, net(41,949)580 67 (9)(905)— (42,216)
Income (loss) before income taxes$26,686 $(39,020)$(12,589)$(26,117)$(40,145)$60 $(91,125)

10
MAMMOTH ENERGY SERVICES, INC.
RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

Adjusted EBITDA

Adjusted EBITDA is a supplemental non-GAAP financial measure that is used by management and external users of the Company's financial statements, such as industry analysts, investors, lenders and rating agencies. Mammoth defines Adjusted EBITDA as net income (loss) before depreciation, depletion, amortization and accretion expense, impairment of goodwill, impairment of other long-lived assets, inventory obsolescence charges, acquisition related costs, stock based compensation, interest expense, net, other (income) expense, net (which is comprised of the (gain) or loss on disposal of long-lived assets and interest on trade accounts receivable) and provision (benefit) for income taxes, further adjusted to add back interest on trade accounts receivable. The Company excludes the items listed above from net income (loss) in arriving at Adjusted EBITDA because these amounts can vary substantially from company to company within the energy service industry depending upon accounting methods and book values of assets, capital structures and the method by which the assets were acquired. Adjusted EBITDA should not be considered as an alternative to, or more meaningful than, net income (loss) or cash flows from operating activities as determined in accordance with GAAP or as an indicator of Mammoth's operating performance or liquidity. Certain items excluded from Adjusted EBITDA are significant components in understanding and assessing a company’s financial performance, such as a company’s cost of capital and tax structure, as well as the historic costs of depreciable assets. Mammoth's computations of Adjusted EBITDA may not be comparable to other similarly titled measures of other companies. The Company believes that Adjusted EBITDA is a widely followed measure of operating performance and may also be used by investors to measure its ability to meet debt service requirements.

The following tables provide a reconciliation of Adjusted EBITDA to the GAAP financial measure of net income (loss) on a consolidated basis and for each of the Company's segments (in thousands):

Consolidated
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
Reconciliation of Adjusted EBITDA to net (loss) income:20202019202020202019
Net (loss) income$(11,861)$(60,779)$3,430 $(107,607)$(79,044)
Depreciation, depletion, amortization and accretion expense22,187 28,521 23,132 95,317 117,033 
Impairment of goodwill— 30,470 — 54,973 33,664 
Impairment of other long-lived assets— 4,010 — 12,897 7,358 
Inventory obsolescence charges— — — — 1,349 
Acquisition related costs— — — — 45 
Stock based compensation354 811 353 1,952 4,177 
Interest expense, net1,191 1,486 1,098 5,397 4,958 
Other income, net(9,218)(7,272)(9,042)(34,938)(42,216)
Benefit for income taxes(3,190)(14,706)(6,193)(12,169)(12,081)
Interest on trade accounts receivable8,077 7,174 9,285 34,130 42,040 
Adjusted EBITDA$7,540 $(10,285)$22,063 $49,952 $77,283 

11
MAMMOTH ENERGY SERVICES, INC.
RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

Infrastructure Services
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
Reconciliation of Adjusted EBITDA to net income (loss):20202019202020202019
Net income (loss)$6,150 $(13,161)$6,122 $(30)$18,778 
Depreciation and amortization expense6,957 7,662 7,294 29,373 30,349 
Acquisition related costs— — — — 12 
Stock based compensation156 175 139 580 822 
Interest expense685 660 623 2,775 1,674 
Other income, net(8,355)(7,236)(8,375)(32,437)(41,949)
Provision for income taxes2,048 2,654 1,646 7,133 7,908 
Interest on trade accounts receivable8,418 7,174 8,170 32,214 42,040 
Adjusted EBITDA$16,059 $(2,072)$15,619 $39,608 $59,634 

Well Completion Services
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
Reconciliation of Adjusted EBITDA to net (loss) income:20202019202020202019
Net (loss) income$(18,123)$(31,478)$799 $(69,073)$(39,020)
Depreciation and amortization expense7,066 9,985 7,189 30,411 40,159 
Impairment of goodwill— 23,423 — 53,406 23,423 
Impairment of other long-lived assets— — — 4,203 — 
Acquisition related costs— — — — 18 
Stock based compensation70 296 76 527 1,693 
Interest expense273 304 253 1,130 1,228 
Other expense (income), net170 574 (1,156)(2,274)580 
Interest on trade accounts receivable(318)— 1,073 1,888 — 
Adjusted EBITDA$(10,862)$3,104 $8,234 $20,218 $28,081 

Natural Sand Proppant Services
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
Reconciliation of Adjusted EBITDA to net income (loss):20202019202020202019
Net income (loss)$1,092 $(9,368)$(3,741)$(11,324)$(12,589)
Depreciation, depletion, amortization and accretion expense2,390 2,628 2,700 9,771 14,050 
Impairment of goodwill— 2,684 — — 2,684 
Acquisition related costs— — — — 8 
Stock based compensation70 156 77 425 812 
Interest expense95 48 70 312 193 
Other expense, net86 — 1,792 1,839 67 
Interest on trade accounts receivable(23)— 26 3 — 
Adjusted EBITDA$3,710 $(3,852)$924 $1,026 $5,225 

12
MAMMOTH ENERGY SERVICES, INC.
RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

Drilling Services
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
Reconciliation of Adjusted EBITDA to net loss:20202019202020202019
Net loss$(3,187)$(10,092)$(3,507)$(16,865)$(26,117)
Depreciation expense2,224 3,361 2,294 10,039 13,143 
Impairment of other long-lived assets— 2,955 — 326 2,955 
Acquisition related costs— — — — 2 
Stock based compensation36 82 38 203 361 
Interest expense5 217 60 454 862 
Other expense (income), net23 14 20 (227)(9)
Adjusted EBITDA$(899)$(3,463)$(1,095)$(6,070)$(8,803)

Other Services(a)
Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
Reconciliation of Adjusted EBITDA to net income (loss):20202019202020202019
Net income (loss)$2,207 $3,320 $3,757 $(10,315)$(20,156)
Depreciation, amortization and accretion expense3,550 4,885 3,655 15,723 19,332 
Impairment of goodwill— 4,363 — 1,567 7,557 
Impairment of other long-lived assets— 1,055 — 8,368 4,403 
Inventory obsolescence charges— — — — 1,349 
Acquisition related costs— — — — 5 
Stock based compensation22 102 23 217 489 
Interest expense, net133 257 92 726 1,001 
Other income, net(1,142)(624)(1,323)(1,839)(905)
Benefit for income taxes(5,238)(17,360)(7,839)(19,302)(19,989)
Interest on trade accounts receivable— — 16 25 — 
Adjusted EBITDA$(468)$(4,002)$(1,619)$(4,830)$(6,914)
a.    Includes results for Mammoth's aviation, coil tubing, pressure control, flowback, cementing, acidizing, equipment rentals, crude oil hauling, full service transportation and remote accommodations, equipment manufacturing and infrastructure engineering and design services and corporate related activities. The Company's corporate related activities do not generate revenue.

Adjusted Net (Loss) Income and Adjusted (Loss) Earnings per Share

Adjusted net (loss) income and adjusted basic and diluted (loss) earnings per share are supplemental non-GAAP financial measures that are used by management to evaluate the Company's operating and financial performance. Management believes these measures provide meaningful information about the Company's performance by excluding certain non-cash charges, such as impairment of goodwill and impairment of other long-lived assets, that may not be indicative of the Company's ongoing operating results. Adjusted net (loss) income and adjusted (loss) earnings per share should not be considered in isolation or as a substitute for net (loss) income and (loss) earnings per share prepared in accordance with GAAP and may not be comparable to other similarly titled measures of other companies. The following tables provide a reconciliation of adjusted net (loss) income and adjusted (loss) earnings per share to the GAAP financial measures of net (loss) income and (loss) earnings per share for the periods specified.

13
MAMMOTH ENERGY SERVICES, INC.
RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

Three Months EndedYears Ended December 31,
December 31,September 30,December 31,
20202019202020202019
(in thousands, except per share amounts)
Net (loss) income, as reported$(11,861)$(60,779)$3,430 $(107,607)$(79,044)
Impairment of goodwill— 30,470 — 54,973 33,664 
Impairment of other long-lived assets— 4,010 — 12,897 7,358 
Adjusted net (loss) income$(11,861)$(26,299)$3,430 $(39,737)$(38,022)
Basic (loss) earnings per share, as reported$(0.26)$(1.35)$0.07 $(2.36)$(1.76)
Impairment of goodwill— 0.68 — 1.20 0.75 
Impairment of other long-lived assets— 0.09 — 0.28 0.16 
Adjusted basic (loss) earnings per share$(0.26)$(0.58)$0.07 $(0.88)$(0.85)
Diluted (loss) earnings per share, as reported$(0.26)$(1.35)$0.07 $(2.36)$(1.76)
Impairment of goodwill— 0.68 — 1.20 0.75 
Impairment of other long-lived assets— 0.09 — 0.28 0.16 
Adjusted diluted (loss) earnings per share$(0.26)$(0.58)$0.07 $(0.88)$(0.85)

14