Plaumann Mark Lawrence
Director
PurchaseAlert
- Shares
- 5,000
- Price
- $3.00
- Value
- $15,000
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•9 filings
TUSK
MAMMOTH ENERGY SERVICES, INC.
Net purchases of $15K over the last 3 months
1 buyer account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
+$15,000
1 buyers · 0 sellers
12-month purchases
$10,534,536
6 distinct insiders
12-month sales
$0.00
0 distinct insiders
Highlighted alerts
7
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
15
Raw transactions
Everything returned by the filing
7
Voluntary view
P/S trades after deterministic checks
0
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- P
- Shares
- 5,000
- Price
- $3.00
- Footnotes
- 2
The price reported in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices within a range. The reporting person undertakes to provide to Mammoth Energy Services, Inc., any security holder of Mammoth Energy Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price. Of the shares reported herein, 2,100 shares are held in a Roth IRA and 2,900 shares are held in a traditional IRA, each for the benefit of the Reporting Person.
Raspberry interpretation
Eligible voluntary-market alert
Reason: voluntary_market_trade.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
WEXFORD CAPITAL LP
Chief Business Officer
PurchaseAlert
- Shares
- 4,019,574
- Price
- $2.60
- Value
- $10,468,177
Amron Arthur H
Director
PurchaseAlert
- Shares
- 2,000
- Price
- $3.28
- Value
- $6,560
Amron Arthur H
Director
PurchaseAlert
- Shares
- 2,500
- Price
- $3.22
- Value
- $8,050
Amron Arthur H
Director
PurchaseAlert
- Shares
- 3,000
- Price
- $3.25
- Value
- $9,750
Amron Arthur H
Director
PurchaseAlert
- Shares
- 2,500
- Price
- $3.24
- Value
- $8,100
Amron Arthur H
Director
PurchaseAlert
- Shares
- 10,000
- Price
- $1.89
- Value
- $18,900
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Plaumann Mark Lawrence Director | Purchase | 5,000 | $3.00 | $15,000 | |
| Jun 17, 2026 | WEXFORD CAPITAL LP Chief Business Officer | Purchase | 4,019,574 | $2.60 | $10,468,177 | |
| Jun 12, 2026 | Amron Arthur H Director | Purchase | 2,000 | $3.28 | $6,560 | |
| Jun 11, 2026 | Amron Arthur H Director | Purchase | 2,500 | $3.22 | $8,050 | |
| May 28, 2026 | Amron Arthur H Director | Purchase | 3,000 | $3.25 | $9,750 | |
| May 26, 2026 | Amron Arthur H Director | Purchase | 2,500 | $3.24 | $8,100 | |
| Dec 11, 2025 | Amron Arthur H Director | Purchase | 10,000 | $1.89 | $18,900 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.