TUSK MAMMOTH ENERGY SERVICES, INC.

CIK 0001679268 43 ready 8-Ks latest June 26, 2026, 4:08 PM ET RSS · JSON

Activity: NORMAL 1 filings / 30d vs 1 baseline Risk accumulating: auditor change (2), risk events (2)

Ready 8-Ks 43

Latest filing June 26, 2026, 4:08 PM ET

Top materiality 0.85

Event mix earnings ×20 · other ×6 · other_material ×5

Sentiment 8 pos · 13 neg · 22 neu

Latest earnings reported 2026-Q1

Executive change recent →

Recent 8-K filings for TUSK

Highest-materiality recent filing

Mammoth sells hydraulic fracturing equipment for $15M; expects $7.7M-$9.2M impairment

June 20, 2025, 7:59 PM ET M&A materiality 0.85 negative item 1.01 item 2.01 item 2.06 item 9.01 ◈ M&A Transactions◈ Restructurings & Charges

Sold all hydraulic fracturing equipment to MGB Manufacturing for $15M cash; closed June 16, 2025.
Expects Q2 2025 goodwill impairment of $7.7M-$9.2M on carrying value exceeding fair value.

Read filing →

June 26, 2026, 4:08 PM ET other materiality 0.15 neutral item 5.07

Mammoth Energy shareholders elect all 6 director nominees, approve executive compensation

Directors elected: Arthur Amron, Corey Booker, Paul Jacobi, Phil Lancaster, James Palm, Mark Plaumann.
May 15, 2026, 8:29 AM ET other material materiality 0.55 neutral item 4.01 item 9.01 ◈ Auditor Changes ×2

Mammoth Energy Services replaces auditor Deloitte with Carr, Riggs & Ingram

Dismissed Deloitte & Touche as independent auditor effective May 13, 2026.
May 11, 2026, 7:59 PM ET earnings materiality 0.75 positive item 2.02 item 9.01 ◈ Earnings Releases

Mammoth Energy Q1 revenue doubles to $22M, net income $4.7M; raises 2026 EBITDA outlook

Revenue from continuing ops $22.0M (up 90% YoY from $11.6M); net income $4.7M ($0.10 diluted) vs net loss $2.2M in Q1 2025.
March 6, 2026, 6:59 PM ET earnings materiality 0.70 neutral item 2.02 item 9.01 ◈ Earnings Releases

Mammoth Energy Q4 revenue $9.5M, net loss $12.3M; full-year loss narrows to $63.8M

Revenue from continuing ops $9.5M in Q4 2025 vs $10.0M Q4 2024; full-year $44.3M vs $45.6M.
December 4, 2025, 6:59 PM ET M&A materiality 0.70 positive item 1.01 item 2.01 item 7.01 item 9.01 ◈ M&A Transactions◈ Material Agreements

Mammoth Energy sells Aquawolf engineering unit to Qualus for $30M; net cash $23.5M

Sale price $30.0M; closing cash proceeds $23.5M, $2.5M escrow for post-closing adjustments and indemnities.
October 31, 2025, 7:59 PM ET earnings materiality 0.65 negative item 2.02 item 9.01

Mammoth Energy Q3 revenue $14.8M, net loss $0.25/share; completed Piranha divestiture

Revenue $14.8M (down 13% YoY from $17.1M); net loss $12.1M ($0.25/share) vs $8.9M loss ($0.18) in Q3 2024.
August 8, 2025, 7:59 PM ET earnings materiality 0.65 neutral item 2.02 item 9.01

Mammoth Energy Q2 2025 net loss $35.7M; sells infrastructure units for $108.7M

Total revenue from continuing ops $16.4M (vs $16.0M YoY); net loss $35.7M ($0.74/diluted) vs $155.6M loss YoY.
July 3, 2025, 7:59 PM ET debt materiality 0.60 neutral item 1.01 item 5.02 item 9.01

Mammoth Energy cuts revolver to $50M; appoints Bernard Lancaster COO

Revolving loan commitments reduced from $75M to $50M effective July 2, 2025.
June 30, 2025, 7:59 PM ET leadership materiality 0.60 neutral item 5.02

Mammoth Energy appoints departing CEO Phil Lancaster to board; chairman Amron deemed independent

Phil Lancaster appointed as non-independent board member effective July 1, 2025, after CEO resignation.
June 20, 2025, 7:59 PM ET M&A materiality 0.85 negative item 1.01 item 2.01 item 2.06 item 9.01 ◈ M&A Transactions◈ Restructurings & Charges

Mammoth sells hydraulic fracturing equipment for $15M; expects $7.7M-$9.2M impairment

Sold all hydraulic fracturing equipment to MGB Manufacturing for $15M cash; closed June 16, 2025.
June 12, 2025, 7:59 PM ET other materiality 0.15 neutral item 5.07

Mammoth Energy shareholders elect four directors, approve say-on-pay, ratify auditor

Shareholders elect Arthur Amron, Corey Booker, Paul Jacobi, and James Palm to board until 2026 annual meeting.
June 5, 2025, 7:59 PM ET leadership materiality 0.70 neutral item 5.02 ◈ executive_change ×4

Mammoth Energy CEO Phil Lancaster resigns; son Bernard named COO; board changes

CEO Phil Lancaster resigns effective June 30, 2025; will become non-voting board observer June 11.
May 7, 2025, 7:59 PM ET earnings materiality 0.75 neutral item 2.02 item 7.01 item 9.01

Mammoth Q1 revenue $62.5M, net loss $0.5M; completes $108.7M infrastructure sale

Total revenue $62.5M, up 45% YoY ($43.2M) and 17% sequentially ($53.2M).
April 17, 2025, 7:59 PM ET M&A materiality 0.85 positive item 1.01 item 2.01 item 5.02 item 7.01 item 9.01 ◈ M&A Transactions

Mammoth Energy sells infrastructure units for $108.7M; CEO to depart, share buyback authorized

Aggregate sale price $108.7M; net cash proceeds of $98.3M; $10.4M escrow for post-closing adjustments.
March 12, 2025, 7:59 PM ET other materiality 0.50 neutral item 4.01 item 9.01 ◈ Auditor Changes ×2

Mammoth Energy dismisses Grant Thornton as auditor, appoints Deloitte & Touche

Audit committee dismissed Grant Thornton LLP on March 7, 2025, effective immediately.
March 7, 2025, 6:59 PM ET earnings materiality 0.70 negative item 2.02 item 7.01 item 9.01

Mammoth Energy Q4 2024 net loss $15.5M, revenue $53.2M; full-year net loss $207.3M

Total revenue Q4 2024: $53.2M (vs $52.8M Q4 2023); full-year revenue $187.9M (down from $309.5M).
February 13, 2025, 6:59 PM ET leadership materiality 0.60 neutral item 5.02 ◈ executive_change

Mammoth Energy Services sets CEO Phil Lancaster's compensation: $350K salary plus $20K monthly bonus

Phil Lancaster named CEO effective Jan 1, 2025; compensation approved Feb 10, 2025.
November 7, 2024, 6:59 PM ET leadership materiality 0.60 neutral item 5.02 item 7.01 item 9.01 ◈ executive_change ×2

Mammoth Energy CEO Arty Straehla to retire Dec 31; Phil Lancaster to become CEO Jan 1

Arty Straehla will retire as CEO and resign from the Board, effective December 31, 2024.
November 1, 2024, 7:59 PM ET earnings materiality 0.75 negative item 2.02 item 7.01 item 9.01

Mammoth Q3 revenue $40M, net loss $24M; PREPA settlement makes company debt-free

Total revenue $40.0M, down 38% YoY from $65.0M; net loss $24.0M ($0.50/diluted share) vs $1.1M loss in Q3 2023.
October 21, 2024, 7:59 PM ET other material materiality 0.60 neutral item 1.01 item 2.03 item 7.01 item 9.01

Mammoth receives $18.4M from PREPA settlement; enters letter of credit agreement

Cobra received $18.4M from PREPA, bringing total settlement proceeds received to $168.4M of $188.4M.
October 3, 2024, 7:59 PM ET debt materiality 0.80 positive item 1.02 item 2.04 item 7.01 item 9.01

Mammoth receives $150M PREPA settlement, pays off debt, raises capex guidance to $23M

Received $150M first installment from PREPA settlement; total settlement proceeds $188.4M.
August 9, 2024, 7:59 PM ET earnings materiality 0.75 negative item 2.02 item 7.01 item 9.01

Mammoth Energy Q2 net loss $156M on $170.7M PREPA settlement charge; revenue $51.5M

Net loss $156M ($3.25/sh) vs $11.8M loss ($0.25/sh) in Q1; Adjusted EBITDA ($160.7M) vs $4.5M.
July 23, 2024, 7:59 PM ET litigation materiality 0.80 negative item 1.01 item 2.04 item 2.06 ◈ Restructurings & Charges

Mammoth Energy settles PREPA dispute for $170M + $18.4M; records $170.7M impairment

Receivable from PREPA was ~$359.1M; settlement yields $170M allowed claim plus $18.4M in withheld FEMA funds.
June 14, 2024, 7:59 PM ET other material materiality 0.10 neutral item 5.07

Mammoth Energy annual meeting: all proposals approved including director election and 2024 equity plan

All six director nominees elected; James Palm received 28.1M for vs. 8.2M against, others had higher margins.
May 2, 2024, 7:59 PM ET earnings materiality 0.85 negative item 2.02 item 7.01 item 9.01 ◈ Earnings Releases

Mammoth Energy Q1 revenue $43.2M, net loss $0.25/sh; cuts 2024 capex to $9M

Revenue $43.2M, down 63% YoY vs $116.3M; net loss $11.8M ($0.25 loss/sh) vs net income $8.4M in Q1 2023.
March 1, 2024, 6:59 PM ET earnings materiality 0.75 negative item 2.02 item 7.01 item 9.01 ◈ Earnings Releases

Mammoth Energy Q4 net loss $6.0M on rev $52.8M; receives $50.6M from PREPA

PREPA paid $50.6M in March plus $13.4M in Jan; extinguished SPCP liability, netting ~$9.6M cash.
December 6, 2023, 6:59 PM ET other material materiality 0.60 positive item 1.01 item 2.03 item 9.01 ◈ Material Agreements

Mammoth sells $54.4M PREPA receivable at 88% for $46.3M net, repays revolver

Cobra sold $54.4M net PREPA claim to SPCP Group at 88% of face; net proceeds $46.3M.
November 9, 2023, 6:59 PM ET earnings materiality 0.75 negative item 2.02 item 7.01 item 9.01 ◈ Earnings Releases

Mammoth Energy Q3 revenue $65M, net loss $1.1M; refinances debt

Total revenue of $65.0M, down 39% YoY from $107.2M; net loss $1.1M vs net income $7.7M in Q3 2022.
October 19, 2023, 7:59 PM ET debt materiality 0.65 neutral item 1.01 item 2.03 item 9.01 ◈ Debt Financings ×2◈ Material Agreements ×2

Mammoth Energy closes $75M revolver and $45M term loan; Wexford Capital funds term loan at SOFR+7.5%

New $75M revolving credit facility with Fifth Third Bank; borrowing base $35.1M, $28.1M drawn, ~$7M available.
August 11, 2023, 7:59 PM ET earnings materiality 0.75 negative item 2.02 item 7.01 item 9.01 ◈ Earnings Releases

Mammoth Energy Q2 revenue $75.4M, net loss $4.5M; refinancing and $55M buyback authorized

Total revenue $75.4M (-16% YoY); net loss $4.5M (-$0.09/diluted) vs net income $1.7M in Q2 2022.
June 8, 2023, 7:59 PM ET other materiality 0.15 neutral item 5.07

Mammoth Energy shareholders elect directors, approve say-on-pay, ratify auditor

Six director nominees elected with between 29.0M and 35.1M votes for each (all incumbents).
April 27, 2023, 7:59 PM ET earnings materiality 0.70 neutral item 2.02 item 7.01 item 9.01 ◈ Earnings Releases

Mammoth Q1 rev $116.3M (+87% YoY), net income $8.4M; cuts capex outlook on nat-gas headwinds

Net income of $8.4M ($0.17 diluted) vs net loss of $14.8M ($0.32 loss) in Q1 2022.
February 23, 2023, 6:59 PM ET earnings materiality 0.75 positive item 2.02 item 7.01 item 9.01

Mammoth Energy Q4 revenue up 80% to $102.9M; net income $4.8M vs loss a year ago

Q4 revenue $102.9M (+80% YoY); net income $4.8M ($0.10/sh) vs net loss $13.3M in Q4 2021.
October 27, 2022, 7:59 PM ET earnings materiality 0.75 positive item 2.02 item 7.01 item 9.01

Mammoth Energy Q3 revenue $107.2M (+86% YoY), net income $7.7M vs loss $40.9M

Revenue $107.2M, up 86% YoY; net income $7.7M ($0.16/share) vs loss $40.9M ($0.88 loss) in Q3 2021.
July 28, 2022, 7:59 PM ET earnings materiality 0.75 positive item 2.02 item 7.01 item 9.01

Mammoth Energy Q2 revenue $89.7M, net income $1.7M vs loss; 2022 capex guided to ~$20M

Q2 total revenue $89.7M (up 89% YoY); net income $1.7M ($0.04 EPS) vs net loss $34.8M ($0.75 loss) YoY.
June 30, 2022, 7:59 PM ET other materiality 0.15 neutral item 5.07

Mammoth Energy stockholders elect directors, approve say-on-pay, ratify auditor

Six director nominees elected: Amron, Booker, Jacobi, Palm, Smith, Straehla, with votes ranging from 26.4M to 31.4M for.
May 24, 2022, 7:59 PM ET other materiality 0.05 neutral item 7.01

Mammoth Energy Services posts updated investor presentation on website

Investor presentation posted May 24, 2022 on Mammoth's website under News & Events.
May 9, 2022, 7:59 PM ET earnings materiality 0.65 neutral item 2.02 item 7.01 item 9.01

Mammoth Energy Q1 2022 revenue $62.3M, net loss widens to $14.8M

Revenue $62.3M, down 7% YoY from $66.8M; net loss $14.8M ($0.32/sh) vs $12.4M loss YoY.
March 4, 2022, 6:59 PM ET earnings materiality 0.70 neutral item 2.02 item 7.01 item 9.01

Mammoth Energy Q4 2021 net loss $13.3M; rev $57.2M; adj EBITDA $17.2M; credit facility amended

Q4 revenue $57.2M (-33% YoY); net loss $13.3M ($0.28 loss/share) vs $11.9M loss in Q4 2020.
November 5, 2021, 7:59 PM ET earnings materiality 0.80 negative item 2.02 item 7.01 item 9.01

Mammoth Energy Q3 net loss $40.9M; revenue falls 18% YoY; credit facility covenants waived

Total revenue $57.5M, down from $70.5M a year ago; net loss of $40.9M ($0.88 per share) vs net income of $3.4M.
November 3, 2021, 7:59 PM ET litigation materiality 0.50 neutral item 7.01 item 8.01 item 9.01

Mammoth Energy Services derivative lawsuit settled for $1.5M from D&O insurers

Preliminary approval granted on Oct 28, 2021; final hearing set for Jan 7, 2022.
September 27, 2021, 7:59 PM ET other material materiality 0.80 negative item 2.04 item 8.01

Mammoth expects $32-33M loss from Gulfport settlement; likely covenant breach under credit facility

Settled litigation with Gulfport; received allowed claim of $3.1M but had $33.0M receivables, expects ~$32-33M loss in Q3 2021.
July 30, 2021, 7:59 PM ET earnings materiality 0.70 negative item 2.02 item 7.01 item 9.01

Mammoth Energy Q2 net loss $34.8M ($0.75/share); revenue $47.4M down 21% YoY

Net loss $34.8M ($0.75 loss per share) vs $15.2M ($0.33) YoY; Adjusted EBITDA -$5.5M vs +$6.9M.