Mammoth Energy Services Ownership & Insider Activity

Mammoth Energy Services (TUSK) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 4.8% of shares outstanding. Institutional investors hold 8.6%. Over the past 90 days, insiders made 1 purchase worth $15K.

Shares Outstanding

48.128M

Shares Float

25.071M

Insider Shares Owned

2.300M

Insider % Owned

4.8%

Institutional Shares Held

4.117M

Institutional % Held

8.6%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

$15K total

Sales (90d)

Net Activity

Net Buying

Net Value (90d)

$15K

Mammoth Energy Services Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 16, 2026	Mark Plaumann	DIRECTOR	BUY	5.000K	$3.00	$15K
Jun 17, 2026	WEXFORD CAPITAL LP, Wexford GP LLC, CHARLES DAVIDSON, JOSEPH JACOBS	CHIEF BUSINESS OFFICER	BUY	11.447M	$2.60	$10.5M
Jun 11, 2026	Arthur Amron	DIRECTOR	BUY	4.500K	$3.25	$15K
May 26, 2026	Arthur Amron	DIRECTOR	BUY	5.500K	$3.25	$18K