TUSK Insider Trading

Insider Trading Chart
Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 2.10%

Insider Buying (Last 12 Months): $18,900.00

Insider Selling (Last 12 Months): $213,050.00

Mammoth Energy Services Insider Trading History Chart

Mammoth Energy Services Share Price & Price History

^$1.85

▼ -0.07 (-3.65%)

As of 12/19/2025 05:00 PM ET

Days: 30 | 90 | 365

Mammoth Energy Services Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
12/11/2025	Arthur H Amron	Director	Buy	10,000	$1.89	$18,900.00	57,135
5/22/2025	Arthur L. Smith	Director	Sell	20,000	$2.51	$50,200.00	130,034
5/20/2025	Arthur L. Smith	Director	Sell	50,000	$2.51	$125,500.00	150,034
5/19/2025	Arthur L. Smith	Director	Sell	15,000	$2.49	$37,350.00	200,034
12/12/2024	Arthur H Amron	Director	Buy	1,000	$2.97	$2,970.00	47,135
11/25/2024	Corey J Booker	Director	Sell	15,000	$3.47	$52,050.00	125,488
11/22/2024	Corey J Booker	Director	Sell	10,000	$3.43	$34,300.00	140,488
11/20/2024	Corey J Booker	Director	Sell	5,000	$3.21	$16,050.00	157,197
11/11/2024	Corey J Booker	Director	Sell	3,494	$3.61	$12,613.34	172,904
11/7/2024	Corey J Booker	Director	Sell	165	$3.90	$643.50	176,422
5/30/2024	Arthur H Amron	Director	Buy	3,000	$3.65	$10,950.00	18,279
5/28/2024	Arthur H Amron	Director	Buy	2,000	$3.57	$7,140.00	15,279
3/12/2024	Arthur H Amron	Director	Buy	3,000	$3.72	$11,160.00	13,279
12/18/2023	Arty Straehla	CEO	Sell	30,000	$4.38	$131,400.00	1,052,107
12/15/2023	Arty Straehla	CEO	Sell	40,000	$4.36	$174,400.00	1,082,107
12/13/2023	Arty Straehla	CEO	Sell	25,000	$4.39	$109,750.00	1,177,107

SEC Filings (Institutional Ownership Changes) for Mammoth Energy Services (NASDAQ:TUSK)

79.67% of Mammoth Energy Services stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Mammoth Energy Services Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
11/17/2025	NewEdge Advisors LLC	25,494	$58K	0.0%	N/A	0.053%
11/14/2025	Valueworks LLC	2,038,205	$4.67M	1.4%	-14.7%	4.230%
11/14/2025	Virtu Financial LLC	14,148	$32K	0.0%	N/A	0.029%
11/14/2025	Bridgeway Capital Management LLC	389,964	$0.89M	0.0%	+11.3%	0.809%
11/13/2025	Franklin Resources Inc.	15,791	$36K	0.0%	N/A	0.033%
11/12/2025	Dimensional Fund Advisors LP	936,414	$2.15M	0.0%	-5.8%	1.943%
11/12/2025	Royce & Associates LP	17,954	$41K	0.0%	-56.4%	0.037%
11/7/2025	Vanguard Group Inc.	945,630	$2.17M	0.0%	-1.2%	1.962%
10/23/2025	Steinberganna Wealth Management	24,265	$56K	0.0%	N/A	0.050%
9/4/2025	Osaic Holdings Inc.	29,433	$82K	0.0%	-50.6%	0.061%
8/15/2025	Bridgeway Capital Management LLC	350,454	$0.98M	0.0%	+4.4%	0.727%
8/15/2025	Adage Capital Partners GP L.L.C.	4,575,000	$12.81M	0.0%	+10.2%	9.494%
8/14/2025	Jane Street Group LLC	17,268	$48K	0.0%	+48.3%	0.036%
8/13/2025	Marshall Wace LLP	57,436	$0.16M	0.0%	N/A	0.119%
8/12/2025	XTX Topco Ltd	36,662	$0.10M	0.0%	N/A	0.076%
8/12/2025	JPMorgan Chase & Co.	185,761	$0.52M	0.0%	+726.7%	0.386%
8/8/2025	Intech Investment Management LLC	12,080	$34K	0.0%	-32.4%	0.025%
8/8/2025	Police & Firemen s Retirement System of New Jersey	9,637	$27K	0.0%	N/A	0.020%
8/8/2025	Geode Capital Management LLC	580,659	$1.63M	0.0%	+6.5%	1.206%
7/10/2025	Wealth Enhancement Advisory Services LLC	12,121	$34K	0.0%	N/A	0.025%
6/27/2025	Goldman Sachs Group Inc.	66,588	$0.14M	0.0%	-25.6%	0.138%
5/16/2025	Empowered Funds LLC	159,685	$0.33M	0.0%	+8.9%	0.332%
5/16/2025	Goldman Sachs Group Inc.	66,588	$0.14M	0.0%	-25.6%	0.138%
5/16/2025	Adage Capital Partners GP L.L.C.	4,150,000	$8.47M	0.0%	+1.2%	8.623%
5/14/2025	Valueworks LLC	2,808,860	$5.73M	2.2%	-0.5%	5.836%
5/14/2025	Wellington Management Group LLP	61,799	$0.13M	0.0%	+24.7%	0.128%
5/12/2025	Nuveen LLC	36,843	$75K	0.0%	N/A	0.077%
5/6/2025	Royce & Associates LP	1,293,637	$2.64M	0.0%	-10.8%	2.688%
4/9/2025	NBC Securities Inc.	56,940	$0.12M	0.0%	+101,578.6%	0.118%
4/1/2025	Penbrook Management LLC	14,000	$29K	0.0%	-36.9%	0.029%
2/17/2025	Valueworks LLC	2,823,185	$8.47M	2.8%	-10.0%	5.866%
2/17/2025	Occudo Quantitative Strategies LP	13,749	$41K	0.0%	N/A	0.029%
2/17/2025	Bridgeway Capital Management LLC	460,274	$1.38M	0.0%	+14.1%	0.956%
2/17/2025	Bank of America Corp DE	22,882	$69K	0.0%	+45.8%	0.048%
2/14/2025	PDT Partners LLC	15,450	$46K	0.0%	N/A	0.032%
2/14/2025	Northern Trust Corp	206,039	$0.62M	0.0%	+2.1%	0.428%
2/14/2025	Adage Capital Partners GP L.L.C.	4,100,000	$12.30M	0.0%	+1.1%	8.519%
2/14/2025	Dimensional Fund Advisors LP	991,223	$2.97M	0.0%	+11.0%	2.059%
2/13/2025	Marshall Wace LLP	14,163	$42K	0.0%	N/A	0.029%
2/13/2025	Barclays PLC	61,549	$0.19M	0.0%	+7.8%	0.128%
2/13/2025	Invesco Ltd.	10,122	$30K	0.0%	N/A	0.021%
2/12/2025	Rangeley Capital LLC	432,338	$1.30M	1.2%	N/A	0.898%
2/12/2025	Geode Capital Management LLC	537,376	$1.61M	0.0%	+1.6%	1.117%
2/12/2025	JPMorgan Chase & Co.	63,079	$0.19M	0.0%	+465.2%	0.131%
2/11/2025	LPL Financial LLC	10,057	$30K	0.0%	-35.4%	0.021%
2/10/2025	Royce & Associates LP	1,449,922	$4.35M	0.0%	+7.3%	3.013%
2/6/2025	Charles Schwab Investment Management Inc.	70,674	$0.21M	0.0%	+11.1%	0.147%
2/4/2025	Bank of New York Mellon Corp	121,993	$0.37M	0.0%	-18.2%	0.253%
1/28/2025	Empowered Funds LLC	146,574	$0.44M	0.0%	+76.3%	0.305%
1/23/2025	Penbrook Management LLC	22,200	$67K	0.0%	-32.1%	0.046%
12/26/2024	JPMorgan Chase & Co.	11,160	$46K	0.0%	-54.1%	0.023%
11/19/2024	Barclays PLC	57,081	$0.23M	0.0%	+65.1%	0.119%
11/16/2024	Geode Capital Management LLC	528,850	$2.16M	0.0%	+1.9%	1.099%
11/15/2024	Barclays PLC	57,081	$0.23M	0.0%	+65.1%	0.119%
11/15/2024	XTX Topco Ltd	12,964	$53K	0.0%	N/A	0.027%
11/15/2024	Jane Street Group LLC	18,544	$76K	0.0%	-50.0%	0.039%
11/15/2024	Wellington Management Group LLP	48,071	$0.20M	0.0%	N/A	0.100%
11/15/2024	Wexford Capital LP	22,068,212	$90.26M	21.6%	0.0%	45.851%
11/15/2024	State Street Corp	403,688	$1.65M	0.0%	+1.4%	0.839%
11/13/2024	FMR LLC	10,967	$45K	0.0%	+32.7%	0.023%
11/6/2024	Archer Investment Corp	12,400	$51K	0.0%	-42.1%	0.026%
11/6/2024	Empowered Funds LLC	83,157	$0.34M	0.0%	+5.3%	0.173%
11/6/2024	Royce & Associates LP	1,351,224	$5.53M	0.1%	+15.2%	2.807%
10/3/2024	SG Americas Securities LLC	10,345	$42K	0.0%	N/A	0.021%
8/9/2024	Renaissance Technologies LLC	130,672	$0.43M	0.0%	-2.7%	0.271%
8/9/2024	Dimensional Fund Advisors LP	806,280	$2.65M	0.0%	+14.0%	1.675%
8/6/2024	Acadian Asset Management LLC	54,357	$0.18M	0.0%	-73.9%	0.113%
7/26/2024	Bank of New York Mellon Corp	166,591	$0.55M	0.0%	+6.9%	0.346%
7/24/2024	Penbrook Management LLC	61,900	$0.20M	0.1%	-4.6%	0.129%
5/13/2024	O Shaughnessy Asset Management LLC	19,247	$70K	0.0%	-31.8%	0.040%
5/10/2024	Acadian Asset Management LLC	207,961	$0.76M	0.0%	-14.8%	0.433%
5/10/2024	Vanguard Group Inc.	723,772	$2.64M	0.0%	+2.5%	1.508%
5/7/2024	Empowered Funds LLC	73,423	$0.27M	0.0%	+8.0%	0.153%
5/1/2024	BNP Paribas Financial Markets	11,265	$41K	0.0%	+55.8%	0.023%
4/18/2024	Penbrook Management LLC	64,900	$0.24M	0.1%	-15.6%	0.135%
4/5/2024	NBC Securities Inc.	55,140	$0.21M	0.0%	-6.1%	0.115%
2/14/2024	CastleKnight Management LP	167,433	$0.75M	0.0%	-10.7%	0.349%
1/31/2024	Archer Investment Corp	21,400	$95K	0.0%	+25.1%	0.045%
1/16/2024	Penbrook Management LLC	76,900	$0.34M	0.2%	-4.9%	0.160%
1/12/2024	SG Americas Securities LLC	12,699	$57K	0.0%	+26.5%	0.026%
11/15/2023	Adage Capital Partners GP L.L.C.	3,700,000	$17.17M	0.0%	+12.1%	7.718%
11/14/2023	O Shaughnessy Asset Management LLC	57,096	$0.27M	0.0%	+56.0%	0.119%
11/13/2023	Connor Clark & Lunn Investment Management Ltd.	93,214	$0.43M	0.0%	-3.8%	0.194%
11/13/2023	Acadian Asset Management LLC	437,601	$2.03M	0.0%	-12.5%	0.913%
11/13/2023	Valueworks LLC	3,374,263	$15.62M	5.7%	-0.3%	7.039%
11/13/2023	Stokes Family Office LLC	12,390	$57K	0.0%	N/A	0.026%
11/13/2023	WINTON GROUP Ltd	35,816	$0.17M	0.0%	+250.0%	0.075%
11/8/2023	Boston Partners	35,093	$0.16M	0.0%	-43.6%	0.073%
11/7/2023	New York State Common Retirement Fund	10,680	$50K	0.0%	-48.9%	0.022%
11/4/2023	NBC Securities Inc.	58,740	$0.27M	0.0%	N/A	0.123%
10/27/2023	Allspring Global Investments Holdings LLC	8,089	$38K	0.0%	N/A	0.017%
10/13/2023	SG Americas Securities LLC	10,036	$47K	0.0%	N/A	0.021%
9/21/2023	Barclays PLC	29,674	$0.14M	0.0%	-42.4%	0.062%
8/15/2023	Kanen Wealth Management LLC	1,767,074	$8.54M	5.7%	-0.5%	3.704%
8/14/2023	Wexford Capital LP	22,566,238	$109M	21.6%	+0.4%	47.299%
8/14/2023	X Square Capital LLC	215,092	$1.04M	0.7%	-46.9%	0.451%
8/14/2023	Prelude Capital Management LLC	10,403	$50K	0.0%	N/A	0.022%
8/10/2023	Cruiser Capital Advisors LLC	17,125	$83K	0.1%	N/A	0.036%
8/10/2023	Boston Partners	62,186	$0.30M	0.0%	+53.8%	0.130%
8/7/2023	Acadian Asset Management LLC	500,157	$2.42M	0.0%	-25.1%	1.048%

Data available starting January 2016

Mammoth Energy Services, Inc. operates as an energy services company in the United States, Canada, and internationally. The company operates in four segments: Well Completion Services, Infrastructure Services, Natural Sand Proppant Services, and Drilling Services. The company offers pressure pumping and hydraulic fracturing, sand hauling, and water transfer services; and master services agreements. It also provides a range of services on electric transmission and distribution, and networks and substation facilities, including engineering, design, construction, upgrade, maintenance, and repair of high voltage transmission lines, substations, and lower voltage overhead and underground distribution systems; storm repair and restoration services; and commercial services comprising installation, maintenance, and repair of commercial wiring. In addition, the company mines, processes, and sells natural sand proppant used for hydraulic fracturing; buys processed sand from suppliers on the spot market for resale; and provides logistics solutions to facilitate delivery of frac sand products. Further, it offers contract land and directional drilling services; and rig moving services. Additionally, the company offers aviation services, equipment rental, remote accommodation, and equipment manufacturing services. It serves government-funded, private, public investor-owned, and co-operative utilities; independent oil and natural gas producers; and land-based drilling contractors. The company was formerly known as Mammoth Energy Partners LP and changed its name to Mammoth Energy Services, Inc. in October 2016. Mammoth Energy Services, Inc. was founded in 2014 and is headquartered in Oklahoma City, Oklahoma.

Today's Range

Now: $1.85

$1.83

$1.95

50 Day Range

MA: $1.99

$1.73

$2.29

52 Week Range

Now: $1.85

$1.68

$3.52

Volume

387,467 shs

Average Volume

351,060 shs

Market Capitalization

$89.15 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.3

Who are the company insiders with the largest holdings of Mammoth Energy Services?: Mammoth Energy Services' top insider investors include:
Arthur L Smith (Director)
Corey J Booker (Director)
Arthur H Amron (Director)
Learn More about top insider investors at Mammoth Energy Services.
Who are the major institutional investors of Mammoth Energy Services?: Mammoth Energy Services' top institutional shareholders include:
Valueworks LLC — 4.23%
Vanguard Group Inc. — 1.96%
Dimensional Fund Advisors LP — 1.94%
Bridgeway Capital Management LLC — 0.81%
NewEdge Advisors LLC — 0.05%
Steinberganna Wealth Management — 0.05%
Learn More about top institutional investors of Mammoth Energy Services stock.
Which institutional investors are selling Mammoth Energy Services stock?: Within the previous quarter, TUSK stock was sold by these institutional investors:
Valueworks LLC
Dimensional Fund Advisors LP
Group One Trading LLC
Royce & Associates LP
Vanguard Group Inc.
Which institutional investors are buying Mammoth Energy Services stock?: During the previous quarter, TUSK stock was purchased by institutional investors including:
Bridgeway Capital Management LLC
NewEdge Advisors LLC
Steinberganna Wealth Management
Franklin Resources Inc.
Virtu Financial LLC
Citadel Advisors LLC
Susquehanna International Group LLP