Company · Ownership research

MAMMOTH ENERGY SERVICES, INC. TUSK

CIK 0001679268

Form 4 transactions dated Oct 1, 2023 to Oct 15, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Sep 17, 2026.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $10.57M
Sold: $1.22M

Oct 1, 2023 – Sep 17, 2026
Available records · partial months are marked ·

202410 of 13 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 12, 2024	Amron Arthur H Director	Purchase	$2.97K 1,000 shares bought	2.17% added Direct holding	▾
Nov 25, 2024	Booker Corey J. Director	Sale	$52.05K 15,000 shares sold	10.68% sold Direct holding	▾
Nov 22, 2024	Booker Corey J. Director	Sale	$34.30K 10,000 shares sold	6.65% sold Direct holding	▾
Nov 21, 2024	Booker Corey J. Director	Sale	$21.80K 6,709 shares sold	4.27% sold Direct holding	▾
Nov 20, 2024	Booker Corey J. Director	Sale	$16.05K 5,000 shares sold	3.08% sold Direct holding	▾
Nov 14, 2024	Booker Corey J. Director	Sale	$12.62K 3,607 shares sold	2.18% sold Direct holding	▾
Nov 13, 2024	Booker Corey J. Director	Sale	$26.10K 7,100 shares sold	4.11% sold Direct holding	▾
Nov 11, 2024	Booker Corey J. Director	Sale	$12.61K 3,494 shares sold	1.98% sold Direct holding	▾
Nov 8, 2024	Booker Corey J. Director	Sale	$90.24 24 shares sold	0.01% sold Direct holding	▾
Nov 7, 2024	Booker Corey J. Director	Sale	$643.50 165 shares sold	0.09% sold Direct holding	▾

Showing 13 / 13 record groups in 2024. The complete set is available through the API.

MAMMOTH ENERGY SERVICES, INC. · TUSK

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 13 of 13 purchase / sale groups and 6 of 6 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"TUSK","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.