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MAMMOTH ENERGY SERVICES, INC.

TUSK Net buying
CIK 0001679268 #4104 in the set updated 17 Sep 2026
Bought (12 mo)
$10.52M
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
+$10.52M
+$10.52M against sales at will

By person

7 insiders · 6 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
WEXFORD CAPITAL LP entity
Chief Business Officer
$10.47M (1)
—
+$10.47M
12,071,823
25.08%
$31.44M
+1,832%
Amron Arthur H
Director
$51.36K (5)
—
+$51.36K
96,585
0.2007%
$251.54K
+109.4%
DAVIDSON CHARLES E
10% owner
—
—
—
6,470,441
13.44%
$16.85M
—
Lancaster Phillip
Director
—
—
—
159,445
0.3313%
$415.24K
+74.7%
SMITH ARTHUR L
Director
—
—
—
130,034
0.2702%
$338.65K
−39.5%
Booker Corey J.
Director
—
—
—
125,488
0.2607%
$326.81K
−28.9%
Jacobi Paul M.
Chief Business Officer
—
—
—
31,067
0.0646%
$80.91K
+11.5%

Individual transactions

6
Insider
Date
Role
Action
Shares
Price
Amount
WEXFORD CAPITAL LP
17 Jun 2026
Chief Business Officer
Buy indirect
4,019,574
$2.60
$10.47M
Amron Arthur H
12 Jun 2026
Director
Buy
2,000
$3.28
$6.56K
Amron Arthur H
11 Jun 2026
Director
Buy
2,500
$3.22
$8.05K
Amron Arthur H
28 May 2026
Director
Buy
3,000
$3.25
$9.75K
Amron Arthur H
26 May 2026
Director
Buy
2,500
$3.24
$8.10K
Amron Arthur H
11 Dec 2025
Director
Buy
10,000
$1.89
$18.90K
Show all 6 transactions →

What was left out

Form 4 filings counted 8
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 3
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 13,998,817
History held since 21 Oct 2016