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Public ownership evidence

Mammoth Energy Services, Inc. Common Stock (TUSK) Ownership Disclosures

Read TUSK insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-10T07:40:50.020Z

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2026-09-172026-09-16Plaumann Mark LawrenceP5,000Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-16 and its public availability date is 2026-09-17. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code P: a purchase. A purchase code is only one eligibility check. Confirm reporting-owner role, amendment lineage and coverage before treating it as a strategy input.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001628280-26-062552 ↗13F 0001162044-26-000700 ↗13F 0001592828-26-000007 ↗

Recent Form 4 activity

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2026-09-172026-09-16Plaumann Mark LawrenceP5,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Archer Investment Corp2026-06-302026-08-208,200$26,650None
Empowered Funds, LLC2026-06-302026-08-18241,313$784,267None
Transamerica Financial Advisors, LLC2026-06-302026-08-1831$100None
MCGUIRE CAPITAL ADVISORS INC2026-06-302026-08-15200$650None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-1567,570$219,603None
JPL Wealth Management, LLC2026-06-302026-08-159$30None
Basecamp Wealth Advisors LLC2026-06-302026-08-1579$257None
XTX Topco Ltd2026-06-302026-08-1549,261$160,098None
Johns Hopkins University2026-06-302026-08-15387,359$1,258,917None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-1510,739$34,902None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-1510,739$34,902None
Qube Research & Technologies Ltd2026-06-302026-08-1558,859$191,292None
OSAIC HOLDINGS, INC.2026-06-302026-08-15150$487None
Schonfeld Strategic Advisors LLC2026-06-302026-08-1516,864$54,807None
JANE STREET GROUP, LLC2026-06-302026-08-15223,578$726,628None
JANE STREET GROUP, LLC2026-06-302026-08-15283,084$920,023None
HRT FINANCIAL LP2026-06-302026-08-1530,632$99,000None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1549,920$162,240None
WEXFORD CAPITAL LP2026-06-302026-08-1512,071,823$39,233,425None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-15124,186$403,604None
ADAGE CAPITAL PARTNERS GP, L.L.C.2026-06-302026-08-154,575,000$14,868,750None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15175,448$570,206None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-159$29None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-157$23None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15413$1,342None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15960$3,120None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-1553$172None
AQR CAPITAL MANAGEMENT LLC2026-06-302026-08-15934$3,036None
ROYAL BANK OF CANADA2026-06-302026-08-154,404$14,000None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-15332,313$1,080,017None
CITADEL ADVISORS LLC2026-06-302026-08-1567,866$220,565None
CITADEL ADVISORS LLC2026-06-302026-08-15141,100$458,575Call
CITADEL ADVISORS LLC2026-06-302026-08-15384,297$1,248,965None
PRELUDE CAPITAL MANAGEMENT, LLC2026-06-302026-08-1510,800$35,100None
GROUP ONE TRADING LLC2026-06-302026-08-15777$2,525None
Point72 Asset Management, L.P.2026-06-302026-08-1572,091$234,296None
WELLINGTON MANAGEMENT GROUP LLP2026-06-302026-08-1547,486$154,330None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-1558,538$190,249None
GOLDMAN SACHS GROUP INC2026-06-302026-08-1554,928$178,516None
HSBC HOLDINGS PLC2026-06-302026-08-1533,706$108,028None
BARCLAYS PLC2026-06-302026-08-151,615$5,249None
BARCLAYS PLC2026-06-302026-08-1523,938$77,799None
WELLS FARGO & COMPANY/MN2026-06-302026-08-15300$975None
BANK OF AMERICA CORP /DE/2026-06-302026-08-1597,046$315,400None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-141,059,603$3,443,710None
Pathstone Holdings, LLC2026-06-302026-08-1422,336$72,592None
Vanguard Global Advisers, LLC2026-06-302026-08-148,774$28,516None
UBS Group AG2026-06-302026-08-1420,157$65,510None
UBS Group AG2026-06-302026-08-149,361$30,423None
Connor, Clark & Lunn Investment Management Ltd.2026-06-302026-08-1428,581$92,888None

90-day public filing window, up to 50 source positions.

Archer Investment Corp ↗Empowered Funds, LLC ↗Transamerica Financial Advisors, LLC ↗MCGUIRE CAPITAL ADVISORS INC ↗Aster Capital Management (DIFC) Ltd ↗JPL Wealth Management, LLC ↗Basecamp Wealth Advisors LLC ↗XTX Topco Ltd ↗Johns Hopkins University ↗CHARLES SCHWAB INVESTMENT MANAGEMENT INC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.