MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (TUSK)

CUSIP: 56155L108

Q2 2026 13F Holders as of 30 Jun 2026

Security type / class
Equity / Common Stock, $0.01 par value
Total 13F shares
186,307
Total 13F value
$604,935
Holder snapshot 5 signals
Share change
+186,307
SEC-reported price per share
$3.25
Number of holders
2
Value change
+$604,935
Number of buys
2
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
48,179,010

Security key

56155L108

Report period

Q2 2026

Institutions

2

Top holders

2

TUSK full security history Ownership snapshot Full 13F holder table Previous quarter: Q1 2026 MAMMOTH ENERGY SERVICES, INC. SEC filings MAMMOTH ENERGY SERVICES, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
WEXFORD CAPITAL LP
Disclosed value leader
WEXFORD CAPITAL LP
Comparable rows
15/15
Latest evidence
26 Jun 2026
13F 13D/G 3/4/5 Lead comparable stake: 25% 13D/G row: WEXFORD CAPITAL LP Showing 1-6 of 15 holder rows.

Quick read

WEXFORD CAPITAL LP leads the comparable SEC ownership view at 25%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens WEXFORD CAPITAL LP's linked filing trail.
Comparable ownership Top 5
WEXFORD CAPITAL LP 25%
Charles E. Davidson 13%
VALUEWORKS LLC 5%
Joseph Jacobs 25%
Wexford GP LLC 25%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
WEXFORD CAPITAL LP
13F 13D/G 3/4/5
Company · Chief Business Officer, Director, 10%+ Owner
13F 13D/G 3/4/5
25%
from 13D/G
$54,067,120
22,068,212 shares
 — 31 Mar 2026
Charles E. Davidson
3/4/5 13D/G
Chief Business Officer, Director, 10%+ Owner
3/4/5 13D/G
13%
from 13D/G
$31,214,753
12,071,823 shares
 +$10,468,177 17 Jun 2026
VALUEWORKS LLC
13D/G 13F
Company
13D/G 13F
5%
$6,689,287
2,389,031 shares
 $0 30 Jun 2025
Joseph Jacobs
3/4/5
Chief Business Officer, Director, 10%+ Owner
3/4/5
25%
$31,214,753
12,071,823 shares
 +$10,468,177 17 Jun 2026
Wexford GP LLC
3/4/5
Chief Business Officer, Director, 10%+ Owner
3/4/5
25%
$31,214,753
12,071,823 shares
 +$10,468,177 17 Jun 2026
CD Holding Company, LLC
3/4/5
10%+ Owner
3/4/5
13%
$15,852,579
6,470,441 shares
 — 17 Jun 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
2
Shares
186,307
Rows available
2
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2026 vs Q1 2026 Across Filers

Q1 2026 holders
89
Q2 2026 holders
2
Holder diff
-87
Investor Q1 2026 Shares Q2 2026 Shares Share Diff Share Chg % Q1 2026 value Q2 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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