LYTIR

Company · TUSK

Mammoth Energy Services, Inc.

Name as listed on its exchange; filed with the SEC as MAMMOTH ENERGY SERVICES, INC.

Nasdaq's symbol directory lists TUSK on Nasdaq as “Mammoth Energy Services, Inc. - Common Stock”.

In the 12 months to Nov 8, 2026: insiders bought on 4 occasions ($10.5M); 2 filings by holders of 5% or more; 2 company reports (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider purchases and sales, by month (last 12 months)Insider purchases: $10.5M in total; Insider sales: $0 in total.Jun: Insider purchases $10.5MSep: Insider purchases $15KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $10.5MInsider sales below: $0
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. WEXFORD CAPITAL LP, Chief Business Officer bought on 1 day latest Jun 17, 2026 bought $10.5M
  2. Mark Lawrence Plaumann bought on 1 day latest Sep 16, 2026 bought $15K
  3. Arthur H. Amron bought on 2 days latest Jun 12, 2026 bought $15K
Every trade (4)
  1. BUYMark Lawrence Plaumann bought Sep 16, 2026 5,000 shares filing $15K
  2. BUYWEXFORD CAPITAL LP, Chief Business Officer bought Jun 17, 2026 4,019,574 shares filing $10.5M
  3. BUYArthur H. Amron bought Jun 12, 2026 2,000 shares filing $7K
  4. BUYArthur H. Amron bought Jun 11, 2026 2,500 shares filing $8K

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. WEXFORD CAPITAL LP filed Jun 22, 2026 Schedule 13G/A passive filing 25.06%
  2. DAVIDSON CHARLES E filed Jun 22, 2026 Schedule 13G passive filing 13.43%

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Entry into a material definitive agreement; Creation of a direct financial obligation; Regulation FD disclosure filing Oct 30, 2026
  2. Results of operations and financial condition; Regulation FD disclosure filing Oct 30, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.