TUSK
Mammoth Enrgy (TUSK)
NASDAQ
$2.81+$0.005 (+0.18%)
Price as of Oct 02, 2026 7:30 PM EDT
  • $134.8M
    Market Cap
  • 21.74%
    1-Year Change
  • Conglomerates
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
WEXFORD CAPITAL LP
25.06%
12.1M
-10.0M (-82.81%)
Jun 30, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
9.50%
4.6M
0 (0.00%)
Jun 30, 2026
PERKINS INVESTMENT MANAGEMENT, LLC
5.83%
2.8M
+225,303 (+8.02%)
Mar 31, 2017
BLACKROCK FUNDING, INC. /DE
3.06%
1.5M
+11,773 (+0.80%)
Dec 31, 2024
BLACKROCK INC.
2.93%
1.4M
-33,451 (-2.37%)
Jun 30, 2024
ROYCE & ASSOCIATES LLC
2.61%
1.3M
+431,626 (+34.27%)
Dec 31, 2021
VANGUARD CAPITAL MANAGEMENT LLC
2.20%
1.1M
+240,483 (+22.70%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions688.8M (80.83%)
  • Insiders101.5M (11.91%)
  • Mutual Funds61.8M (7.25%)
  • Other0 (0.00%)

Insider Transactions

  • 11.91% (101.5M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $415,321.24
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Plaumann Mark Lawrence
Buy
Sep 16, 2026
$15,000.00
5,000
$3.00
5,000
Jacobi Paul M.
Chief Business Officer
Other
Jun 17, 2026
$0.00
3,211
$0.00
31,067
AMRON ARTHUR H
Other
Jun 17, 2026
$0.00
19,121
$0.00
86,256
AMRON ARTHUR H
Other
Jun 17, 2026
$0.00
10,329
$0.00
10,329
AMRON ARTHUR H
Buy
Jun 12, 2026
$6,560.00
2,000
$3.28
67,135
AMRON ARTHUR H
Buy
Jun 11, 2026
$8,049.75
2,500
$3.22
65,135