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buyNotable cluster of 2

Wexford Capital LP bought $10M of TUSK

Chief Business Officer at MAMMOTH ENERGY SERVICES, INC.. 4,019,574 shares at an average of $2.60, traded Jun 17, 2026, filed Jun 22, 2026.

Conviction score
62
Value
$10M
4,019,574 shares
Holdings after
10,620,789
+61% from before
From 52-week low
+76%
low $1.73, close $3.04
From 52-week high
-21%
high $3.84, as of Jun 17, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $10.5M at market
    +25
  • Relative to holdings
    Holdings up 61%
    +10
  • Price context
    21% below the 52-week high
    +4
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

TUSKOct 9, 2026 · close 2.82
Since filing Jun 22, 2026: -3.4%SPY +4.8% · excess -8.2%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001398344-26-011113, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jun 17, 2026JOther
Common Stock
+1,072,896$0.00$01,451,034Jun 22, 2026
Jun 17, 2026JOther
Common Stockindirect: See footnotes
+6,354,667$0.00$06,601,215Jun 22, 2026
Jun 17, 2026POpen-market purchase
Common Stockindirect: See footnotes
+4,019,574$2.60$10M10,620,789Jun 22, 2026

Related signals

Other insiders at MAMMOTH ENERGY SERVICES, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
27Weak
TUSKbuy
MAMMOTH ENERGY SERVICES, INC.
Mark Lawrence Plaumann
director
$15k
5,000 shares
-
35Weak
TUSKbuy 2
MAMMOTH ENERGY SERVICES, INC.
Arthur H Amron
director
$15k
4,500 shares
+7%
18Weak
TUSKbuy
MAMMOTH ENERGY SERVICES, INC.
Arthur H Amron
director
$18k
5,500 shares
+10%
39Weak
TUSKbuy
MAMMOTH ENERGY SERVICES, INC.
Arthur H Amron
director
$19k
10,000 shares
+21%
27Weak
TUSKsell
MAMMOTH ENERGY SERVICES, INC.
Arthur L Smith
director
$50k
20,000 shares
-13%
36Weak
TUSKsell
MAMMOTH ENERGY SERVICES, INC.
Arthur L Smith
director
$163k
65,000 shares
-30%
15Weak
TUSKbuy
MAMMOTH ENERGY SERVICES, INC.
Arthur H Amron
director
$2,971
1,000 shares
+2%
29Weak
TUSKsell
MAMMOTH ENERGY SERVICES, INC.
Corey J. Booker
director
$86k
25,000 shares
-17%
21Weak
TUSKsell
MAMMOTH ENERGY SERVICES, INC.
Corey J. Booker
director
$38k
11,709 shares
-7%
21Weak
TUSKsell
MAMMOTH ENERGY SERVICES, INC.
Corey J. Booker
director
$39k
10,707 shares
-6%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Wexford Capital LP bought $10M of TUSK | InsiderTell