What SEC filings does Mammoth Energy Services, Inc. submit to the SEC?

Mammoth Energy Services, Inc. (TUSK) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about TUSK?

A Form 4 for TUSK discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Mammoth Energy Services, Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for TUSK?

The 10-K is Mammoth Energy Services, Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all TUSK SEC filings directly on EDGAR?

You can view all historical Mammoth Energy Services, Inc. filings on the SEC EDGAR company page for TUSK. Each filing card on this page links directly to the original SEC document.

How often does Mammoth Energy Services, Inc. file with the SEC?

Mammoth Energy Services, Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling TUSK shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

TUSK SEC Filing News — Mammoth Energy Services, Inc.

Latest SEC filings for Mammoth Energy Services, Inc. (TUSK) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-17.

Mammoth Energy Services, Inc. operates as an energy services company in the United States, Canada, and internationally. It operates in four segments: Well Completion Services, Infrastructure Services, and Natural Sand Proppant Services. The company offers hydraulic fracturing, sand hauling, water transfer, master services agreements. It also provides services on electric transmission and distribution, networks and substation facilities, such as engineering, design, construction, upgrade, mainten…

Sector: Industrials Industry: Conglomerates Market Cap: $129.9M CIK: 1679268

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for TUSK currently lean bullish. Of the 20 displayed SEC filing records, 5 carry bullish classifications versus 0 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 9 insider transactions (Form 4) in this period.

TUSK Filing Activity Snapshot 2025-10-31 — 2026-09-17

Insider Transactions (Form 4)

5 buys vs 0 sells

Net insider buying in this period — more purchases than sales reported.

Largest Form 144 Filing

$10.47M

WEXFORD CAPITAL LP (Director, Chief Business Officer, 10% Owner) · 2026-06-22

4,019,574 shares · Form 4

Insider Transactions 9 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 9 filings in this group are Form 4s for Mammoth Energy Services, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 9 insider filings shown, the breakdown is 5 open-market purchase and 4 other reported transaction. 5 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market purchase ×5: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Other reported transaction ×4: The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Form 4 Open-market purchase Insider Buying 2026-09-17

TUSK insider Plaumann Mark Lawrence (Director) bought 5,000 shares (~$15.0K)

Plaumann Mark Lawrence, listed as Director at MAMMOTH ENERGY SERVICES, INC., reported an open-market purchase of 5,000 TUSK shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	5,000	$3.00	$15.0K

Filing: Form 4 (Insider Transaction) Insider: Plaumann Mark Lawrence (Director) Shares: 5,000 Est. Value: $15.0K

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-07-01

TUSK insider Form 4 filed for equity award, exercise, or tax withholding

Lancaster Phillip (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`J`	Other transaction	68,152	—	—

Filing: Form 4 (Insider Transaction) Insider: Lancaster Phillip (Director) Shares: 68,152

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-06-22

TUSK insider Form 4 filed for equity award, exercise, or tax withholding

Jacobi Paul M. (Director, Chief Business Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`J`	Other transaction	3,211	—	—

Filing: Form 4 (Insider Transaction) Insider: Jacobi Paul M. (Director, Chief Business Officer) Shares: 3,211

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-06-22

TUSK insider Form 4 filed for equity award, exercise, or tax withholding

Amron Arthur H (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`J`	Other transaction	19,121	—	—
`J`	Other transaction	10,329	—	—

Filing: Form 4 (Insider Transaction) Insider: Amron Arthur H (Director) Shares: 29,450

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-06-22

TUSK insider WEXFORD CAPITAL LP (Director, Chief Business Officer, 10% Owner) bought 4,019,574 shares (~$10.47M)

WEXFORD CAPITAL LP, listed as Director, Chief Business Officer, 10% Owner at MAMMOTH ENERGY SERVICES, INC., reported an open-market purchase of 4,019,574 TUSK shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`J`	Other transaction	1,072,896	—	—
`J`	Other transaction	6,354,667	—	—
`P`	Open-market purchase	4,019,574	$2.60	$10.47M

Filing: Form 4 (Insider Transaction) Insider: WEXFORD CAPITAL LP (Director, Chief Business Officer, 10% Owner) Shares: 4,019,574 Est. Value: $10.47M

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-06-22

TUSK insider Form 4 filed for equity award, exercise, or tax withholding

DAVIDSON CHARLES E (10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`J`	Other transaction	2,403,831	—	—
`J`	Other transaction	4,066,610	—	—

Filing: Form 4 (Insider Transaction) Insider: DAVIDSON CHARLES E (10% Owner) Shares: 6,470,441

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-06-15

TUSK insider Amron Arthur H (Director) bought 4,500 shares (~$14.6K)

Amron Arthur H, listed as Director at MAMMOTH ENERGY SERVICES, INC., reported an open-market purchase of 4,500 TUSK shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	2,500	$3.22	$8.0K
`P`	Open-market purchase	2,000	$3.28	$6.6K

Filing: Form 4 (Insider Transaction) Insider: Amron Arthur H (Director) Shares: 4,500 Est. Value: $14.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-05-28

TUSK insider Amron Arthur H (Director) bought 5,500 shares (~$17.8K)

Amron Arthur H, listed as Director at MAMMOTH ENERGY SERVICES, INC., reported an open-market purchase of 5,500 TUSK shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	2,500	$3.24	$8.1K
`P`	Open-market purchase	3,000	$3.25	$9.8K

Filing: Form 4 (Insider Transaction) Insider: Amron Arthur H (Director) Shares: 5,500 Est. Value: $17.8K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2025-12-15

TUSK insider Amron Arthur H (Director) bought 10,000 shares (~$18.9K)

Amron Arthur H, listed as Director at MAMMOTH ENERGY SERVICES, INC., reported an open-market purchase of 10,000 TUSK shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	10,000	$1.89	$18.9K

Filing: Form 4 (Insider Transaction) Insider: Amron Arthur H (Director) Shares: 10,000 Est. Value: $18.9K

View on SEC EDGAR → Open Filing Document →

Material Events 7 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 7 in this period for Mammoth Energy Services, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-07